Petter Reinholdtsen: Debian init.d boot script example for rsyslog

+#!/lib/init/init-d-script +### BEGIN INIT INFO +# Provides: rsyslog +# Required-Start: $remote_fs $time +# Required-Stop: umountnfs $time +# X-Stop-After: sendsigs +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: enhanced syslogd +# Description: Rsyslog is an enhanced multi-threaded syslogd. +# It is quite compatible to stock sysklogd and can be +# used as a drop-in replacement. +### END INIT INFO +DESC="enhanced syslogd" +DAEMON=/usr/sbin/rsyslogd +

+#!/bin/sh + +# Define LSB log_* functions. +# Depend on lsb-base (>= 3.2-14) to ensure that this file is present +# and status_of_proc is working. +. /lib/lsb/init-functions + +# +# Function that starts the daemon/service + +# +do_start() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \ + || return 1 + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \ + $DAEMON_ARGS \ + || return 2 + # Add code here, if necessary, that waits for the process to be ready + # to handle requests from services started subsequently which depend + # on this one. As a last resort, sleep for some time. +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME + RETVAL="$?" + [ "$RETVAL" = 2 ] && return 2 + # Wait for children to finish too if this is a daemon that forks + # and if the daemon is only ever run from this initscript. + # If the above conditions are not satisfied then add some other code + # that waits for the process to drop all resources that could be + # needed by services started subsequently. A last resort is to + # sleep for some time. + start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON + [ "$?" = 2 ] && return 2 + # Many daemons don't delete their pidfiles when they exit. + rm -f $PIDFILE + return "$RETVAL" +} + +# +# Function that sends a SIGHUP to the daemon/service +# +do_reload() { + # + # If the daemon can reload its configuration without + # restarting (for example, when it is sent a SIGHUP), + # then implement that here. + # + start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME + return 0 +} + +SCRIPTNAME=$1 +scriptbasename="$(basename $1)" +echo "SN: $scriptbasename" +if [ "$scriptbasename" != "init-d-library" ] ; then + script="$1" + shift + . $script +else + exit 0 +fi + +NAME=$(basename $DAEMON) +PIDFILE=/var/run/$NAME.pid + +# Exit if the package is not installed +#[ -x "$DAEMON" ] || exit 0 + +# Read configuration variable file if it is present +[ -r /etc/default/$NAME ] && . /etc/default/$NAME + +# Load the VERBOSE setting and other rcS variables +. /lib/init/vars.sh + +case "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + status) + status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $? + ;; + #reload|force-reload) + # + # If do_reload() is not implemented then leave this commented out + # and leave 'force-reload' as an alias for 'restart'. + # + #log_daemon_msg "Reloading $DESC" "$NAME" + #do_reload + #log_end_msg $? + #;; + restart|force-reload) + # + # If the "reload" option is implemented then remove the + # 'force-reload' alias + # + log_daemon_msg "Restarting $DESC" "$NAME" + do_stop + case "$?" in + 0|1) + do_start + case "$?" in + 0) log_end_msg 0 ;; + 1) log_end_msg 1 ;; # Old process is still running + *) log_end_msg 1 ;; # Failed to start + esac + ;; + *) + # Failed to stop + log_end_msg 1 + ;; + esac + ;; + *) + echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 + exit 3 + ;; +esac + +: +

Browser plugin for SPICE (spice-xpi) uploaded to Debian @@ -87,7 +298,7 @@ NEW. I hope it will be available in Debian in a few days.

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@@ -233,11 +444,11 @@ NEW. I hope it will be available in Debian in a few days.

@@ -247,7 +458,7 @@ NEW. I hope it will be available in Debian in a few days.

diff --git a/blog/index.html b/blog/index.html index 0ceec8ab9c..955fede355 100644 --- a/blog/index.html +++ b/blog/index.html @@ -19,6 +19,211 @@ +

Debian init.d boot script example for rsyslog

2nd November 2013

If one of the points of switching to a new init system in Debian is +to get rid of huge +init.d scripts, I doubt we need to switch away from sysvinit and +init.d scripts at all. Here is an example init.d script, ie a rewrite +of /etc/init.d/rsyslog:

+ +

+#!/lib/init/init-d-script
+### BEGIN INIT INFO
+# Provides:          rsyslog
+# Required-Start:    $remote_fs $time
+# Required-Stop:     umountnfs $time
+# X-Stop-After:      sendsigs
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: enhanced syslogd
+# Description:       Rsyslog is an enhanced multi-threaded syslogd.
+#                    It is quite compatible to stock sysklogd and can be 
+#                    used as a drop-in replacement.
+### END INIT INFO
+DESC="enhanced syslogd"
+DAEMON=/usr/sbin/rsyslogd
+

+ +

Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments.

+ +

How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +

+#!/bin/sh
+
+# Define LSB log_* functions.
+# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
+# and status_of_proc is working.
+. /lib/lsb/init-functions
+
+#
+# Function that starts the daemon/service
+
+#
+do_start()
+{
+	# Return
+	#   0 if daemon has been started
+	#   1 if daemon was already running
+	#   2 if daemon could not be started
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
+		|| return 1
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
+		$DAEMON_ARGS \
+		|| return 2
+	# Add code here, if necessary, that waits for the process to be ready
+	# to handle requests from services started subsequently which depend
+	# on this one.  As a last resort, sleep for some time.
+}
+
+#
+# Function that stops the daemon/service
+#
+do_stop()
+{
+	# Return
+	#   0 if daemon has been stopped
+	#   1 if daemon was already stopped
+	#   2 if daemon could not be stopped
+	#   other if a failure occurred
+	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
+	RETVAL="$?"
+	[ "$RETVAL" = 2 ] && return 2
+	# Wait for children to finish too if this is a daemon that forks
+	# and if the daemon is only ever run from this initscript.
+	# If the above conditions are not satisfied then add some other code
+	# that waits for the process to drop all resources that could be
+	# needed by services started subsequently.  A last resort is to
+	# sleep for some time.
+	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
+	[ "$?" = 2 ] && return 2
+	# Many daemons don't delete their pidfiles when they exit.
+	rm -f $PIDFILE
+	return "$RETVAL"
+}
+
+#
+# Function that sends a SIGHUP to the daemon/service
+#
+do_reload() {
+	#
+	# If the daemon can reload its configuration without
+	# restarting (for example, when it is sent a SIGHUP),
+	# then implement that here.
+	#
+	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
+	return 0
+}
+
+SCRIPTNAME=$1
+scriptbasename="$(basename $1)"
+echo "SN: $scriptbasename"
+if [ "$scriptbasename" != "init-d-library" ] ; then
+    script="$1"
+    shift
+    . $script
+else
+    exit 0
+fi
+
+NAME=$(basename $DAEMON)
+PIDFILE=/var/run/$NAME.pid
+
+# Exit if the package is not installed
+#[ -x "$DAEMON" ] || exit 0
+
+# Read configuration variable file if it is present
+[ -r /etc/default/$NAME ] && . /etc/default/$NAME
+
+# Load the VERBOSE setting and other rcS variables
+. /lib/init/vars.sh
+
+case "$1" in
+  start)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
+	do_start
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  stop)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
+	do_stop
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  status)
+	status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
+	;;
+  #reload|force-reload)
+	#
+	# If do_reload() is not implemented then leave this commented out
+	# and leave 'force-reload' as an alias for 'restart'.
+	#
+	#log_daemon_msg "Reloading $DESC" "$NAME"
+	#do_reload
+	#log_end_msg $?
+	#;;
+  restart|force-reload)
+	#
+	# If the "reload" option is implemented then remove the
+	# 'force-reload' alias
+	#
+	log_daemon_msg "Restarting $DESC" "$NAME"
+	do_stop
+	case "$?" in
+	  0|1)
+		do_start
+		case "$?" in
+			0) log_end_msg 0 ;;
+			1) log_end_msg 1 ;; # Old process is still running
+			*) log_end_msg 1 ;; # Failed to start
+		esac
+		;;
+	  *)
+		# Failed to stop
+		log_end_msg 1
+		;;
+	esac
+	;;
+  *)
+	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
+	exit 3
+	;;
+esac
+
+:
+

+ +

It is based on /etc/init.d/skeleton, and could be improved quite a +lot. I did not really polish the approach, so it might not always +work out of the box, but you get the idea. I did not try very hard to +optimize it nor make it more robust either.

+ +

A better argument for switching init system in Debian than reducing +the size of init scripts (which is a good thing to do anyway), is to +get boot system that is able to handle the kernel events sensibly and +robustly, and do not depend on the boot to run sequentially. The boot +and the kernel have not behaved sequentially in year.

+ + + Tags: bootsystem, debian, english. + + +

Browser plugin for SPICE (spice-xpi) uploaded to Debian

1st November 2013

@@ -581,79 +786,6 @@ lvresize + resize2fs in tty 2 while installing).

Videos about the Freedombox project - for inspiration and learning

27th September 2013

The Freedombox -project have been going on for a while, and have presented the -vision, ideas and solution several places. Here is a little -collection of videos of talks and presentation of the project.

- -

FreedomBox - -2,5 minute marketing film (Youtube)
Eben Moglen -discusses the Freedombox on CBS news 2011 (Youtube)
Eben Moglen - -Freedom in the Cloud - Software Freedom, Privacy and and Security for -Web 2.0 and Cloud computing at ISOC-NY Public Meeting 2010 -(Youtube)
Fosdem 2011 -Keynote by Eben Moglen presenting the Freedombox (Youtube)
Presentation of -the Freedombox by James Vasile at Elevate in Gratz 2011 (Youtube)
Freedombox - -Discovery, Identity, and Trust by Nick Daly at Freedombox Hackfest New -York City in 2012 (Youtube)
Introduction -to the Freedombox at Freedombox Hackfest New York City in 2012 -(Youtube)
Freedom, Out -of the Box! by Bdale Garbee at linux.conf.au Ballarat, 2012 (Youtube)
Freedombox -1.0 by Eben Moglen and Bdale Garbee at Fosdem 2013 (FOSDEM)
What is the -FreedomBox today by Bdale Garbee at Debconf13 in Vaumarcus -2013 (Youtube)

- -

A larger list is available from -the -Freedombox Wiki.

- -

On other news, I am happy to report that Freedombox based on Debian -Jessie is coming along quite well, and soon both Owncloud and using -Tor should be available for testers of the Freedombox solution. :) In -a few weeks I hope everything needed to test it is included in Debian. -The withsqlite package is already in Debian, and the plinth package is -pending in NEW. The third and vital part of that puzzle is the -metapackage/setup framework, which is still pending an upload. Join -us on IRC -(#freedombox on irc.debian.org) and -the -mailing list if you want to help make this vision come true.

- - - Tags: debian, english, freedombox, sikkerhet, surveillance, web. - - -

@@ -685,7 +817,7 @@ mailing list if you want to help make this vision come true.

October (7)

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@@ -831,11 +963,11 @@ mailing list if you want to help make this vision come true.

@@ -845,7 +977,7 @@ mailing list if you want to help make this vision come true.

diff --git a/blog/index.rss b/blog/index.rss index 0fa8b44add..453efc0fca 100644 --- a/blog/index.rss +++ b/blog/index.rss @@ -6,6 +6,205 @@ http://people.skolelinux.org/pere/blog/ + + Debian init.d boot script example for rsyslog + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + Sat, 2 Nov 2013 22:40:00 +0100 + If one of the points of switching to a new init system in Debian is +<a href="http://thomas.goirand.fr/blog/?p=147">to get rid of huge +init.d scripts</a>, I doubt we need to switch away from sysvinit and +init.d scripts at all. Here is an example init.d script, ie a rewrite +of /etc/init.d/rsyslog: + +<pre> +#!/lib/init/init-d-script +### BEGIN INIT INFO +# Provides: rsyslog +# Required-Start: $remote_fs $time +# Required-Stop: umountnfs $time +# X-Stop-After: sendsigs +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: enhanced syslogd +# Description: Rsyslog is an enhanced multi-threaded syslogd. +# It is quite compatible to stock sysklogd and can be +# used as a drop-in replacement. +### END INIT INFO +DESC="enhanced syslogd" +DAEMON=/usr/sbin/rsyslogd +</pre> + +Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments. + +How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +<pre> +#!/bin/sh + +# Define LSB log_* functions. +# Depend on lsb-base (>= 3.2-14) to ensure that this file is present +# and status_of_proc is working. +. /lib/lsb/init-functions + +# +# Function that starts the daemon/service + +# +do_start() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \ + || return 1 + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \ + $DAEMON_ARGS \ + || return 2 + # Add code here, if necessary, that waits for the process to be ready + # to handle requests from services started subsequently which depend + # on this one. As a last resort, sleep for some time. +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME + RETVAL="$?" + [ "$RETVAL" = 2 ] && return 2 + # Wait for children to finish too if this is a daemon that forks + # and if the daemon is only ever run from this initscript. + # If the above conditions are not satisfied then add some other code + # that waits for the process to drop all resources that could be + # needed by services started subsequently. A last resort is to + # sleep for some time. + start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON + [ "$?" = 2 ] && return 2 + # Many daemons don't delete their pidfiles when they exit. + rm -f $PIDFILE + return "$RETVAL" +} + +# +# Function that sends a SIGHUP to the daemon/service +# +do_reload() { + # + # If the daemon can reload its configuration without + # restarting (for example, when it is sent a SIGHUP), + # then implement that here. + # + start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME + return 0 +} + +SCRIPTNAME=$1 +scriptbasename="$(basename $1)" +echo "SN: $scriptbasename" +if [ "$scriptbasename" != "init-d-library" ] ; then + script="$1" + shift + . $script +else + exit 0 +fi + +NAME=$(basename $DAEMON) +PIDFILE=/var/run/$NAME.pid + +# Exit if the package is not installed +#[ -x "$DAEMON" ] || exit 0 + +# Read configuration variable file if it is present +[ -r /etc/default/$NAME ] && . /etc/default/$NAME + +# Load the VERBOSE setting and other rcS variables +. /lib/init/vars.sh + +case "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + status) + status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $? + ;; + #reload|force-reload) + # + # If do_reload() is not implemented then leave this commented out + # and leave 'force-reload' as an alias for 'restart'. + # + #log_daemon_msg "Reloading $DESC" "$NAME" + #do_reload + #log_end_msg $? + #;; + restart|force-reload) + # + # If the "reload" option is implemented then remove the + # 'force-reload' alias + # + log_daemon_msg "Restarting $DESC" "$NAME" + do_stop + case "$?" in + 0|1) + do_start + case "$?" in + 0) log_end_msg 0 ;; + 1) log_end_msg 1 ;; # Old process is still running + *) log_end_msg 1 ;; # Failed to start + esac + ;; + *) + # Failed to stop + log_end_msg 1 + ;; + esac + ;; + *) + echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 + exit 3 + ;; +esac + +: +</pre> + +It is based on /etc/init.d/skeleton, and could be improved quite a +lot. I did not really polish the approach, so it might not always +work out of the box, but you get the idea. I did not try very hard to +optimize it nor make it more robust either. + +A better argument for switching init system in Debian than reducing +the size of init scripts (which is a good thing to do anyway), is to +get boot system that is able to handle the kernel events sensibly and +robustly, and do not depend on the boot to run sequentially. The boot +and the kernel have not behaved sequentially in year. + + + Browser plugin for SPICE (spice-xpi) uploaded to Debian http://people.skolelinux.org/pere/blog/Browser_plugin_for_SPICE__spice_xpi__uploaded_to_Debian.html @@ -514,72 +713,5 @@ lvresize + resize2fs in tty 2 while installing). - - Videos about the Freedombox project - for inspiration and learning - http://people.skolelinux.org/pere/blog/Videos_about_the_Freedombox_project___for_inspiration_and_learning.html - http://people.skolelinux.org/pere/blog/Videos_about_the_Freedombox_project___for_inspiration_and_learning.html - Fri, 27 Sep 2013 14:10:00 +0200 - The <a href="http://www.freedomboxfoundation.org/">Freedombox -project</a> have been going on for a while, and have presented the -vision, ideas and solution several places. Here is a little -collection of videos of talks and presentation of the project. - -<ul> - -<li><a href="http://www.youtube.com/watch?v=ukvUz5taxvA">FreedomBox - -2,5 minute marketing film</a> (Youtube)</li> - -<li><a href="http://www.youtube.com/watch?v=SzW25QTVWsE">Eben Moglen -discusses the Freedombox on CBS news 2011</a> (Youtube)</li> - -<li><a href="http://www.youtube.com/watch?v=Ae8SZbxfE0g">Eben Moglen - -Freedom in the Cloud - Software Freedom, Privacy and and Security for -Web 2.0 and Cloud computing at ISOC-NY Public Meeting 2010</a> -(Youtube)</li> - -<li><a href="http://www.youtube.com/watch?v=vNaIji_3xBE">Fosdem 2011 -Keynote by Eben Moglen presenting the Freedombox</a> (Youtube)</li> - -<li><a href="http://www.youtube.com/watch?v=9bDDUyJSQ9s">Presentation of -the Freedombox by James Vasile at Elevate in Gratz 2011</a> (Youtube)</li> - -<li><a href="http://www.youtube.com/watch?v=zQTmnk27g9s"> Freedombox - -Discovery, Identity, and Trust by Nick Daly at Freedombox Hackfest New -York City in 2012</a> (Youtube)</li> - -<li><a href="http://www.youtube.com/watch?v=tkbSB4Ba7Ck">Introduction -to the Freedombox at Freedombox Hackfest New York City in 2012</a> -(Youtube)</li> - -<li><a href="http://www.youtube.com/watch?v=z-P2Jaeg0aQ">Freedom, Out -of the Box! by Bdale Garbee at linux.conf.au Ballarat, 2012</a> (Youtube) </li> - -<li><a href="https://archive.fosdem.org/2013/schedule/event/freedombox/">Freedombox -1.0 by Eben Moglen and Bdale Garbee at Fosdem 2013</a> (FOSDEM) </li> - -<li><a href="http://www.youtube.com/watch?v=e1LpYX2zVYg">What is the -FreedomBox today by Bdale Garbee at Debconf13 in Vaumarcus -2013</a> (Youtube)</li> - -</ul> - -A larger list is available from -<a href="https://wiki.debian.org/FreedomBox/TalksAndPresentations">the -Freedombox Wiki</a>. - -On other news, I am happy to report that Freedombox based on Debian -Jessie is coming along quite well, and soon both Owncloud and using -Tor should be available for testers of the Freedombox solution. :) In -a few weeks I hope everything needed to test it is included in Debian. -The withsqlite package is already in Debian, and the plinth package is -pending in NEW. The third and vital part of that puzzle is the -metapackage/setup framework, which is still pending an upload. Join -us on <a href="irc://irc.debian.org:6667/%23freedombox">IRC -(#freedombox on irc.debian.org)</a> and -<a href="http://lists.alioth.debian.org/mailman/listinfo/freedombox-discuss">the -mailing list</a> if you want to help make this vision come true. - - - diff --git a/blog/jXplorer__a_very_nice_LDAP_GUI.html b/blog/jXplorer__a_very_nice_LDAP_GUI.html index ba0a702638..977522e275 100644 --- a/blog/jXplorer__a_very_nice_LDAP_GUI.html +++ b/blog/jXplorer__a_very_nice_LDAP_GUI.html @@ -76,7 +76,7 @@ and remove the failing query. Nothing big, but very annoying.

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@@ -222,11 +222,11 @@ and remove the failing query. Nothing big, but very annoying.

@@ -236,7 +236,7 @@ and remove the failing query. Nothing big, but very annoying.

diff --git a/blog/sitemap.xml b/blog/sitemap.xml index 14c13131a5..3d391c4c0f 100644 --- a/blog/sitemap.xml +++ b/blog/sitemap.xml @@ -480,6 +480,11 @@ 0.50 weekly + + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + 0.50 + weekly + http://people.skolelinux.org/pere/blog/Debian_Wheezy_is_out___and_Debian_Edu___Skolelinux_should_soon_follow___newinwheezy.html 0.50 diff --git a/blog/systemd__an_interesting_alternative_to_upstart.html b/blog/systemd__an_interesting_alternative_to_upstart.html index 7f75586f8d..e3ea9fa932 100644 --- a/blog/systemd__an_interesting_alternative_to_upstart.html +++ b/blog/systemd__an_interesting_alternative_to_upstart.html @@ -94,7 +94,7 @@ with parallel booting enabled by default.

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@@ -240,11 +240,11 @@ with parallel booting enabled by default.

@@ -254,7 +254,7 @@ with parallel booting enabled by default.

diff --git a/blog/tags/3d-printer/index.html b/blog/tags/3d-printer/index.html index 9331830312..c2e7be5e8d 100644 --- a/blog/tags/3d-printer/index.html +++ b/blog/tags/3d-printer/index.html @@ -626,7 +626,7 @@ hÃ¥per det ikke gÃ¥r tapt pÃ¥ samme vis.

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@@ -772,11 +772,11 @@ hÃ¥per det ikke gÃ¥r tapt pÃ¥ samme vis.

@@ -786,7 +786,7 @@ hÃ¥per det ikke gÃ¥r tapt pÃ¥ samme vis.

diff --git a/blog/tags/amiga/index.html b/blog/tags/amiga/index.html index 8c9659e7ff..9030c63a1b 100644 --- a/blog/tags/amiga/index.html +++ b/blog/tags/amiga/index.html @@ -80,7 +80,7 @@ pakke. Kanskje Aros kunne vÃ¦rt interessant for et NUUG-foredrag?

October (7)

November (1)

November (2)

@@ -226,11 +226,11 @@ pakke. Kanskje Aros kunne vÃ¦rt interessant for et NUUG-foredrag?

@@ -240,7 +240,7 @@ pakke. Kanskje Aros kunne vÃ¦rt interessant for et NUUG-foredrag?

diff --git a/blog/tags/aros/index.html b/blog/tags/aros/index.html index 901e0d4e96..e34d6ad991 100644 --- a/blog/tags/aros/index.html +++ b/blog/tags/aros/index.html @@ -80,7 +80,7 @@ pakke. Kanskje Aros kunne vÃ¦rt interessant for et NUUG-foredrag?

October (7)

November (1)

November (2)

@@ -226,11 +226,11 @@ pakke. Kanskje Aros kunne vÃ¦rt interessant for et NUUG-foredrag?

@@ -240,7 +240,7 @@ pakke. Kanskje Aros kunne vÃ¦rt interessant for et NUUG-foredrag?

diff --git a/blog/tags/bankid/index.html b/blog/tags/bankid/index.html index cfbe768e5e..17bf4ea6fc 100644 --- a/blog/tags/bankid/index.html +++ b/blog/tags/bankid/index.html @@ -486,7 +486,7 @@ til BankID-modellen.

October (7)

November (1)

November (2)

@@ -632,11 +632,11 @@ til BankID-modellen.

@@ -646,7 +646,7 @@ til BankID-modellen.

diff --git a/blog/tags/bitcoin/index.html b/blog/tags/bitcoin/index.html index da5c4394f0..b721bfc826 100644 --- a/blog/tags/bitcoin/index.html +++ b/blog/tags/bitcoin/index.html @@ -510,7 +510,7 @@ donations to the address

October (7)

November (1)

November (2)

@@ -656,11 +656,11 @@ donations to the address

@@ -670,7 +670,7 @@ donations to the address

diff --git a/blog/tags/bootsystem/bootsystem.rss b/blog/tags/bootsystem/bootsystem.rss index d232ae8c30..0e96556589 100644 --- a/blog/tags/bootsystem/bootsystem.rss +++ b/blog/tags/bootsystem/bootsystem.rss @@ -6,6 +6,205 @@ http://people.skolelinux.org/pere/blog/ + + Debian init.d boot script example for rsyslog + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + Sat, 2 Nov 2013 22:40:00 +0100 + If one of the points of switching to a new init system in Debian is +<a href="http://thomas.goirand.fr/blog/?p=147">to get rid of huge +init.d scripts</a>, I doubt we need to switch away from sysvinit and +init.d scripts at all. Here is an example init.d script, ie a rewrite +of /etc/init.d/rsyslog: + +<pre> +#!/lib/init/init-d-script +### BEGIN INIT INFO +# Provides: rsyslog +# Required-Start: $remote_fs $time +# Required-Stop: umountnfs $time +# X-Stop-After: sendsigs +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: enhanced syslogd +# Description: Rsyslog is an enhanced multi-threaded syslogd. +# It is quite compatible to stock sysklogd and can be +# used as a drop-in replacement. +### END INIT INFO +DESC="enhanced syslogd" +DAEMON=/usr/sbin/rsyslogd +</pre> + +Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments. + +How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +<pre> +#!/bin/sh + +# Define LSB log_* functions. +# Depend on lsb-base (>= 3.2-14) to ensure that this file is present +# and status_of_proc is working. +. /lib/lsb/init-functions + +# +# Function that starts the daemon/service + +# +do_start() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \ + || return 1 + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \ + $DAEMON_ARGS \ + || return 2 + # Add code here, if necessary, that waits for the process to be ready + # to handle requests from services started subsequently which depend + # on this one. As a last resort, sleep for some time. +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME + RETVAL="$?" + [ "$RETVAL" = 2 ] && return 2 + # Wait for children to finish too if this is a daemon that forks + # and if the daemon is only ever run from this initscript. + # If the above conditions are not satisfied then add some other code + # that waits for the process to drop all resources that could be + # needed by services started subsequently. A last resort is to + # sleep for some time. + start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON + [ "$?" = 2 ] && return 2 + # Many daemons don't delete their pidfiles when they exit. + rm -f $PIDFILE + return "$RETVAL" +} + +# +# Function that sends a SIGHUP to the daemon/service +# +do_reload() { + # + # If the daemon can reload its configuration without + # restarting (for example, when it is sent a SIGHUP), + # then implement that here. + # + start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME + return 0 +} + +SCRIPTNAME=$1 +scriptbasename="$(basename $1)" +echo "SN: $scriptbasename" +if [ "$scriptbasename" != "init-d-library" ] ; then + script="$1" + shift + . $script +else + exit 0 +fi + +NAME=$(basename $DAEMON) +PIDFILE=/var/run/$NAME.pid + +# Exit if the package is not installed +#[ -x "$DAEMON" ] || exit 0 + +# Read configuration variable file if it is present +[ -r /etc/default/$NAME ] && . /etc/default/$NAME + +# Load the VERBOSE setting and other rcS variables +. /lib/init/vars.sh + +case "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + status) + status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $? + ;; + #reload|force-reload) + # + # If do_reload() is not implemented then leave this commented out + # and leave 'force-reload' as an alias for 'restart'. + # + #log_daemon_msg "Reloading $DESC" "$NAME" + #do_reload + #log_end_msg $? + #;; + restart|force-reload) + # + # If the "reload" option is implemented then remove the + # 'force-reload' alias + # + log_daemon_msg "Restarting $DESC" "$NAME" + do_stop + case "$?" in + 0|1) + do_start + case "$?" in + 0) log_end_msg 0 ;; + 1) log_end_msg 1 ;; # Old process is still running + *) log_end_msg 1 ;; # Failed to start + esac + ;; + *) + # Failed to stop + log_end_msg 1 + ;; + esac + ;; + *) + echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 + exit 3 + ;; +esac + +: +</pre> + +It is based on /etc/init.d/skeleton, and could be improved quite a +lot. I did not really polish the approach, so it might not always +work out of the box, but you get the idea. I did not try very hard to +optimize it nor make it more robust either. + +A better argument for switching init system in Debian than reducing +the size of init scripts (which is a good thing to do anyway), is to +get boot system that is able to handle the kernel events sensibly and +robustly, and do not depend on the boot to run sequentially. The boot +and the kernel have not behaved sequentially in year. + + + How is booting into runlevel 1 different from single user boots? http://people.skolelinux.org/pere/blog/How_is_booting_into_runlevel_1_different_from_single_user_boots_.html diff --git a/blog/tags/bootsystem/index.html b/blog/tags/bootsystem/index.html index 7a5faf0705..40afeab063 100644 --- a/blog/tags/bootsystem/index.html +++ b/blog/tags/bootsystem/index.html @@ -20,6 +20,217 @@

Entries tagged "bootsystem".

+ Debian init.d boot script example for rsyslog +

+ 2nd November 2013 +

+ +

+#!/lib/init/init-d-script
+### BEGIN INIT INFO
+# Provides:          rsyslog
+# Required-Start:    $remote_fs $time
+# Required-Stop:     umountnfs $time
+# X-Stop-After:      sendsigs
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: enhanced syslogd
+# Description:       Rsyslog is an enhanced multi-threaded syslogd.
+#                    It is quite compatible to stock sysklogd and can be 
+#                    used as a drop-in replacement.
+### END INIT INFO
+DESC="enhanced syslogd"
+DAEMON=/usr/sbin/rsyslogd
+

+ +

Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments.

+ +

How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +

+#!/bin/sh
+
+# Define LSB log_* functions.
+# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
+# and status_of_proc is working.
+. /lib/lsb/init-functions
+
+#
+# Function that starts the daemon/service
+
+#
+do_start()
+{
+	# Return
+	#   0 if daemon has been started
+	#   1 if daemon was already running
+	#   2 if daemon could not be started
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
+		|| return 1
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
+		$DAEMON_ARGS \
+		|| return 2
+	# Add code here, if necessary, that waits for the process to be ready
+	# to handle requests from services started subsequently which depend
+	# on this one.  As a last resort, sleep for some time.
+}
+
+#
+# Function that stops the daemon/service
+#
+do_stop()
+{
+	# Return
+	#   0 if daemon has been stopped
+	#   1 if daemon was already stopped
+	#   2 if daemon could not be stopped
+	#   other if a failure occurred
+	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
+	RETVAL="$?"
+	[ "$RETVAL" = 2 ] && return 2
+	# Wait for children to finish too if this is a daemon that forks
+	# and if the daemon is only ever run from this initscript.
+	# If the above conditions are not satisfied then add some other code
+	# that waits for the process to drop all resources that could be
+	# needed by services started subsequently.  A last resort is to
+	# sleep for some time.
+	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
+	[ "$?" = 2 ] && return 2
+	# Many daemons don't delete their pidfiles when they exit.
+	rm -f $PIDFILE
+	return "$RETVAL"
+}
+
+#
+# Function that sends a SIGHUP to the daemon/service
+#
+do_reload() {
+	#
+	# If the daemon can reload its configuration without
+	# restarting (for example, when it is sent a SIGHUP),
+	# then implement that here.
+	#
+	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
+	return 0
+}
+
+SCRIPTNAME=$1
+scriptbasename="$(basename $1)"
+echo "SN: $scriptbasename"
+if [ "$scriptbasename" != "init-d-library" ] ; then
+    script="$1"
+    shift
+    . $script
+else
+    exit 0
+fi
+
+NAME=$(basename $DAEMON)
+PIDFILE=/var/run/$NAME.pid
+
+# Exit if the package is not installed
+#[ -x "$DAEMON" ] || exit 0
+
+# Read configuration variable file if it is present
+[ -r /etc/default/$NAME ] && . /etc/default/$NAME
+
+# Load the VERBOSE setting and other rcS variables
+. /lib/init/vars.sh
+
+case "$1" in
+  start)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
+	do_start
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  stop)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
+	do_stop
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  status)
+	status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
+	;;
+  #reload|force-reload)
+	#
+	# If do_reload() is not implemented then leave this commented out
+	# and leave 'force-reload' as an alias for 'restart'.
+	#
+	#log_daemon_msg "Reloading $DESC" "$NAME"
+	#do_reload
+	#log_end_msg $?
+	#;;
+  restart|force-reload)
+	#
+	# If the "reload" option is implemented then remove the
+	# 'force-reload' alias
+	#
+	log_daemon_msg "Restarting $DESC" "$NAME"
+	do_stop
+	case "$?" in
+	  0|1)
+		do_start
+		case "$?" in
+			0) log_end_msg 0 ;;
+			1) log_end_msg 1 ;; # Old process is still running
+			*) log_end_msg 1 ;; # Failed to start
+		esac
+		;;
+	  *)
+		# Failed to stop
+		log_end_msg 1
+		;;
+	esac
+	;;
+  *)
+	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
+	exit 3
+	;;
+esac
+
+:
+

+ +

+ + + Tags: bootsystem, debian, english. + + +

How is booting into runlevel 1 different from single user boots? @@ -787,7 +998,7 @@ insserv'. Will need to test if that work. :)

October (7)

November (1)

November (2)

@@ -933,11 +1144,11 @@ insserv'. Will need to test if that work. :)

@@ -947,7 +1158,7 @@ insserv'. Will need to test if that work. :)

diff --git a/blog/tags/bsa/index.html b/blog/tags/bsa/index.html index 4f7dcc804f..afb4575099 100644 --- a/blog/tags/bsa/index.html +++ b/blog/tags/bsa/index.html @@ -168,7 +168,7 @@ pÃ¥ Slashdot.

October (7)

November (1)

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@@ -314,11 +314,11 @@ pÃ¥ Slashdot.

@@ -328,7 +328,7 @@ pÃ¥ Slashdot.

diff --git a/blog/tags/debian edu/index.html b/blog/tags/debian edu/index.html index 9573fb7632..065a6090e7 100644 --- a/blog/tags/debian edu/index.html +++ b/blog/tags/debian edu/index.html @@ -12921,7 +12921,7 @@ be the only one fitting our needs. :/

October (7)

November (1)

November (2)

@@ -13067,11 +13067,11 @@ be the only one fitting our needs. :/

@@ -13081,7 +13081,7 @@ be the only one fitting our needs. :/

diff --git a/blog/tags/debian/debian.rss b/blog/tags/debian/debian.rss index 07298685e8..c30bb41817 100644 --- a/blog/tags/debian/debian.rss +++ b/blog/tags/debian/debian.rss @@ -6,6 +6,205 @@ http://people.skolelinux.org/pere/blog/ + + Debian init.d boot script example for rsyslog + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + Sat, 2 Nov 2013 22:40:00 +0100 + If one of the points of switching to a new init system in Debian is +<a href="http://thomas.goirand.fr/blog/?p=147">to get rid of huge +init.d scripts</a>, I doubt we need to switch away from sysvinit and +init.d scripts at all. Here is an example init.d script, ie a rewrite +of /etc/init.d/rsyslog: + +<pre> +#!/lib/init/init-d-script +### BEGIN INIT INFO +# Provides: rsyslog +# Required-Start: $remote_fs $time +# Required-Stop: umountnfs $time +# X-Stop-After: sendsigs +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: enhanced syslogd +# Description: Rsyslog is an enhanced multi-threaded syslogd. +# It is quite compatible to stock sysklogd and can be +# used as a drop-in replacement. +### END INIT INFO +DESC="enhanced syslogd" +DAEMON=/usr/sbin/rsyslogd +</pre> + +Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments. + +How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +<pre> +#!/bin/sh + +# Define LSB log_* functions. +# Depend on lsb-base (>= 3.2-14) to ensure that this file is present +# and status_of_proc is working. +. /lib/lsb/init-functions + +# +# Function that starts the daemon/service + +# +do_start() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \ + || return 1 + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \ + $DAEMON_ARGS \ + || return 2 + # Add code here, if necessary, that waits for the process to be ready + # to handle requests from services started subsequently which depend + # on this one. As a last resort, sleep for some time. +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME + RETVAL="$?" + [ "$RETVAL" = 2 ] && return 2 + # Wait for children to finish too if this is a daemon that forks + # and if the daemon is only ever run from this initscript. + # If the above conditions are not satisfied then add some other code + # that waits for the process to drop all resources that could be + # needed by services started subsequently. A last resort is to + # sleep for some time. + start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON + [ "$?" = 2 ] && return 2 + # Many daemons don't delete their pidfiles when they exit. + rm -f $PIDFILE + return "$RETVAL" +} + +# +# Function that sends a SIGHUP to the daemon/service +# +do_reload() { + # + # If the daemon can reload its configuration without + # restarting (for example, when it is sent a SIGHUP), + # then implement that here. + # + start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME + return 0 +} + +SCRIPTNAME=$1 +scriptbasename="$(basename $1)" +echo "SN: $scriptbasename" +if [ "$scriptbasename" != "init-d-library" ] ; then + script="$1" + shift + . $script +else + exit 0 +fi + +NAME=$(basename $DAEMON) +PIDFILE=/var/run/$NAME.pid + +# Exit if the package is not installed +#[ -x "$DAEMON" ] || exit 0 + +# Read configuration variable file if it is present +[ -r /etc/default/$NAME ] && . /etc/default/$NAME + +# Load the VERBOSE setting and other rcS variables +. /lib/init/vars.sh + +case "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + status) + status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $? + ;; + #reload|force-reload) + # + # If do_reload() is not implemented then leave this commented out + # and leave 'force-reload' as an alias for 'restart'. + # + #log_daemon_msg "Reloading $DESC" "$NAME" + #do_reload + #log_end_msg $? + #;; + restart|force-reload) + # + # If the "reload" option is implemented then remove the + # 'force-reload' alias + # + log_daemon_msg "Restarting $DESC" "$NAME" + do_stop + case "$?" in + 0|1) + do_start + case "$?" in + 0) log_end_msg 0 ;; + 1) log_end_msg 1 ;; # Old process is still running + *) log_end_msg 1 ;; # Failed to start + esac + ;; + *) + # Failed to stop + log_end_msg 1 + ;; + esac + ;; + *) + echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 + exit 3 + ;; +esac + +: +</pre> + +It is based on /etc/init.d/skeleton, and could be improved quite a +lot. I did not really polish the approach, so it might not always +work out of the box, but you get the idea. I did not try very hard to +optimize it nor make it more robust either. + +A better argument for switching init system in Debian than reducing +the size of init scripts (which is a good thing to do anyway), is to +get boot system that is able to handle the kernel events sensibly and +robustly, and do not depend on the boot to run sequentially. The boot +and the kernel have not behaved sequentially in year. + + + Browser plugin for SPICE (spice-xpi) uploaded to Debian http://people.skolelinux.org/pere/blog/Browser_plugin_for_SPICE__spice_xpi__uploaded_to_Debian.html diff --git a/blog/tags/debian/index.html b/blog/tags/debian/index.html index 3f0b534074..266aeb574f 100644 --- a/blog/tags/debian/index.html +++ b/blog/tags/debian/index.html @@ -20,6 +20,217 @@

Entries tagged "debian".

+ Debian init.d boot script example for rsyslog +

+ 2nd November 2013 +

+ +

+#!/lib/init/init-d-script
+### BEGIN INIT INFO
+# Provides:          rsyslog
+# Required-Start:    $remote_fs $time
+# Required-Stop:     umountnfs $time
+# X-Stop-After:      sendsigs
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: enhanced syslogd
+# Description:       Rsyslog is an enhanced multi-threaded syslogd.
+#                    It is quite compatible to stock sysklogd and can be 
+#                    used as a drop-in replacement.
+### END INIT INFO
+DESC="enhanced syslogd"
+DAEMON=/usr/sbin/rsyslogd
+

+ +

Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments.

+ +

How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +

+#!/bin/sh
+
+# Define LSB log_* functions.
+# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
+# and status_of_proc is working.
+. /lib/lsb/init-functions
+
+#
+# Function that starts the daemon/service
+
+#
+do_start()
+{
+	# Return
+	#   0 if daemon has been started
+	#   1 if daemon was already running
+	#   2 if daemon could not be started
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
+		|| return 1
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
+		$DAEMON_ARGS \
+		|| return 2
+	# Add code here, if necessary, that waits for the process to be ready
+	# to handle requests from services started subsequently which depend
+	# on this one.  As a last resort, sleep for some time.
+}
+
+#
+# Function that stops the daemon/service
+#
+do_stop()
+{
+	# Return
+	#   0 if daemon has been stopped
+	#   1 if daemon was already stopped
+	#   2 if daemon could not be stopped
+	#   other if a failure occurred
+	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
+	RETVAL="$?"
+	[ "$RETVAL" = 2 ] && return 2
+	# Wait for children to finish too if this is a daemon that forks
+	# and if the daemon is only ever run from this initscript.
+	# If the above conditions are not satisfied then add some other code
+	# that waits for the process to drop all resources that could be
+	# needed by services started subsequently.  A last resort is to
+	# sleep for some time.
+	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
+	[ "$?" = 2 ] && return 2
+	# Many daemons don't delete their pidfiles when they exit.
+	rm -f $PIDFILE
+	return "$RETVAL"
+}
+
+#
+# Function that sends a SIGHUP to the daemon/service
+#
+do_reload() {
+	#
+	# If the daemon can reload its configuration without
+	# restarting (for example, when it is sent a SIGHUP),
+	# then implement that here.
+	#
+	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
+	return 0
+}
+
+SCRIPTNAME=$1
+scriptbasename="$(basename $1)"
+echo "SN: $scriptbasename"
+if [ "$scriptbasename" != "init-d-library" ] ; then
+    script="$1"
+    shift
+    . $script
+else
+    exit 0
+fi
+
+NAME=$(basename $DAEMON)
+PIDFILE=/var/run/$NAME.pid
+
+# Exit if the package is not installed
+#[ -x "$DAEMON" ] || exit 0
+
+# Read configuration variable file if it is present
+[ -r /etc/default/$NAME ] && . /etc/default/$NAME
+
+# Load the VERBOSE setting and other rcS variables
+. /lib/init/vars.sh
+
+case "$1" in
+  start)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
+	do_start
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  stop)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
+	do_stop
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  status)
+	status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
+	;;
+  #reload|force-reload)
+	#
+	# If do_reload() is not implemented then leave this commented out
+	# and leave 'force-reload' as an alias for 'restart'.
+	#
+	#log_daemon_msg "Reloading $DESC" "$NAME"
+	#do_reload
+	#log_end_msg $?
+	#;;
+  restart|force-reload)
+	#
+	# If the "reload" option is implemented then remove the
+	# 'force-reload' alias
+	#
+	log_daemon_msg "Restarting $DESC" "$NAME"
+	do_stop
+	case "$?" in
+	  0|1)
+		do_start
+		case "$?" in
+			0) log_end_msg 0 ;;
+			1) log_end_msg 1 ;; # Old process is still running
+			*) log_end_msg 1 ;; # Failed to start
+		esac
+		;;
+	  *)
+		# Failed to stop
+		log_end_msg 1
+		;;
+	esac
+	;;
+  *)
+	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
+	exit 3
+	;;
+esac
+
+:
+

+ +

+ + + Tags: bootsystem, debian, english. + + +

Browser plugin for SPICE (spice-xpi) uploaded to Debian @@ -6940,7 +7151,7 @@ be the only one fitting our needs. :/

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@@ -7086,11 +7297,11 @@ be the only one fitting our needs. :/

@@ -7100,7 +7311,7 @@ be the only one fitting our needs. :/

diff --git a/blog/tags/digistan/index.html b/blog/tags/digistan/index.html index f44f72db32..e8998e99a1 100644 --- a/blog/tags/digistan/index.html +++ b/blog/tags/digistan/index.html @@ -1267,7 +1267,7 @@ produkter basert pÃ¥ standarden.

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@@ -1413,11 +1413,11 @@ produkter basert pÃ¥ standarden.

@@ -1427,7 +1427,7 @@ produkter basert pÃ¥ standarden.

diff --git a/blog/tags/docbook/index.html b/blog/tags/docbook/index.html index c867dd19a6..1b097845a3 100644 --- a/blog/tags/docbook/index.html +++ b/blog/tags/docbook/index.html @@ -792,7 +792,7 @@ slik at du kan oppdatere direkte.

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@@ -938,11 +938,11 @@ slik at du kan oppdatere direkte.

@@ -952,7 +952,7 @@ slik at du kan oppdatere direkte.

diff --git a/blog/tags/drivstoffpriser/index.html b/blog/tags/drivstoffpriser/index.html index 7003718a19..b896fc7a97 100644 --- a/blog/tags/drivstoffpriser/index.html +++ b/blog/tags/drivstoffpriser/index.html @@ -509,7 +509,7 @@ en liste med stasjoner pÃ¥ samme format som PriserVedStasjoner.

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@@ -655,11 +655,11 @@ en liste med stasjoner pÃ¥ samme format som PriserVedStasjoner.

@@ -669,7 +669,7 @@ en liste med stasjoner pÃ¥ samme format som PriserVedStasjoner.

diff --git a/blog/tags/english/english.rss b/blog/tags/english/english.rss index 9200fd087c..fefb7e2fd9 100644 --- a/blog/tags/english/english.rss +++ b/blog/tags/english/english.rss @@ -6,6 +6,205 @@ http://people.skolelinux.org/pere/blog/ + + Debian init.d boot script example for rsyslog + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + http://people.skolelinux.org/pere/blog/Debian_init_d_boot_script_example_for_rsyslog.html + Sat, 2 Nov 2013 22:40:00 +0100 + If one of the points of switching to a new init system in Debian is +<a href="http://thomas.goirand.fr/blog/?p=147">to get rid of huge +init.d scripts</a>, I doubt we need to switch away from sysvinit and +init.d scripts at all. Here is an example init.d script, ie a rewrite +of /etc/init.d/rsyslog: + +<pre> +#!/lib/init/init-d-script +### BEGIN INIT INFO +# Provides: rsyslog +# Required-Start: $remote_fs $time +# Required-Stop: umountnfs $time +# X-Stop-After: sendsigs +# Default-Start: 2 3 4 5 +# Default-Stop: 0 1 6 +# Short-Description: enhanced syslogd +# Description: Rsyslog is an enhanced multi-threaded syslogd. +# It is quite compatible to stock sysklogd and can be +# used as a drop-in replacement. +### END INIT INFO +DESC="enhanced syslogd" +DAEMON=/usr/sbin/rsyslogd +</pre> + +Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments. + +How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +<pre> +#!/bin/sh + +# Define LSB log_* functions. +# Depend on lsb-base (>= 3.2-14) to ensure that this file is present +# and status_of_proc is working. +. /lib/lsb/init-functions + +# +# Function that starts the daemon/service + +# +do_start() +{ + # Return + # 0 if daemon has been started + # 1 if daemon was already running + # 2 if daemon could not be started + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \ + || return 1 + start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \ + $DAEMON_ARGS \ + || return 2 + # Add code here, if necessary, that waits for the process to be ready + # to handle requests from services started subsequently which depend + # on this one. As a last resort, sleep for some time. +} + +# +# Function that stops the daemon/service +# +do_stop() +{ + # Return + # 0 if daemon has been stopped + # 1 if daemon was already stopped + # 2 if daemon could not be stopped + # other if a failure occurred + start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME + RETVAL="$?" + [ "$RETVAL" = 2 ] && return 2 + # Wait for children to finish too if this is a daemon that forks + # and if the daemon is only ever run from this initscript. + # If the above conditions are not satisfied then add some other code + # that waits for the process to drop all resources that could be + # needed by services started subsequently. A last resort is to + # sleep for some time. + start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON + [ "$?" = 2 ] && return 2 + # Many daemons don't delete their pidfiles when they exit. + rm -f $PIDFILE + return "$RETVAL" +} + +# +# Function that sends a SIGHUP to the daemon/service +# +do_reload() { + # + # If the daemon can reload its configuration without + # restarting (for example, when it is sent a SIGHUP), + # then implement that here. + # + start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME + return 0 +} + +SCRIPTNAME=$1 +scriptbasename="$(basename $1)" +echo "SN: $scriptbasename" +if [ "$scriptbasename" != "init-d-library" ] ; then + script="$1" + shift + . $script +else + exit 0 +fi + +NAME=$(basename $DAEMON) +PIDFILE=/var/run/$NAME.pid + +# Exit if the package is not installed +#[ -x "$DAEMON" ] || exit 0 + +# Read configuration variable file if it is present +[ -r /etc/default/$NAME ] && . /etc/default/$NAME + +# Load the VERBOSE setting and other rcS variables +. /lib/init/vars.sh + +case "$1" in + start) + [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" + do_start + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + stop) + [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" + do_stop + case "$?" in + 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; + 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; + esac + ;; + status) + status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $? + ;; + #reload|force-reload) + # + # If do_reload() is not implemented then leave this commented out + # and leave 'force-reload' as an alias for 'restart'. + # + #log_daemon_msg "Reloading $DESC" "$NAME" + #do_reload + #log_end_msg $? + #;; + restart|force-reload) + # + # If the "reload" option is implemented then remove the + # 'force-reload' alias + # + log_daemon_msg "Restarting $DESC" "$NAME" + do_stop + case "$?" in + 0|1) + do_start + case "$?" in + 0) log_end_msg 0 ;; + 1) log_end_msg 1 ;; # Old process is still running + *) log_end_msg 1 ;; # Failed to start + esac + ;; + *) + # Failed to stop + log_end_msg 1 + ;; + esac + ;; + *) + echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 + exit 3 + ;; +esac + +: +</pre> + +It is based on /etc/init.d/skeleton, and could be improved quite a +lot. I did not really polish the approach, so it might not always +work out of the box, but you get the idea. I did not try very hard to +optimize it nor make it more robust either. + +A better argument for switching init system in Debian than reducing +the size of init scripts (which is a good thing to do anyway), is to +get boot system that is able to handle the kernel events sensibly and +robustly, and do not depend on the boot to run sequentially. The boot +and the kernel have not behaved sequentially in year. + + + Browser plugin for SPICE (spice-xpi) uploaded to Debian http://people.skolelinux.org/pere/blog/Browser_plugin_for_SPICE__spice_xpi__uploaded_to_Debian.html diff --git a/blog/tags/english/index.html b/blog/tags/english/index.html index df68612d21..462907b2a7 100644 --- a/blog/tags/english/index.html +++ b/blog/tags/english/index.html @@ -20,6 +20,217 @@

Entries tagged "english".

+ Debian init.d boot script example for rsyslog +

+ 2nd November 2013 +

+ +

+#!/lib/init/init-d-script
+### BEGIN INIT INFO
+# Provides:          rsyslog
+# Required-Start:    $remote_fs $time
+# Required-Stop:     umountnfs $time
+# X-Stop-After:      sendsigs
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: enhanced syslogd
+# Description:       Rsyslog is an enhanced multi-threaded syslogd.
+#                    It is quite compatible to stock sysklogd and can be 
+#                    used as a drop-in replacement.
+### END INIT INFO
+DESC="enhanced syslogd"
+DAEMON=/usr/sbin/rsyslogd
+

+ +

Pretty minimalistic to me... For the record, the original sysv-rc +script was 137 lines, and the above is just 15 lines, most of the meta +info/comments.

+ +

How to do this, you ask? Well, one create a new script +/lib/init/init-d-script looking something like this: + +

+#!/bin/sh
+
+# Define LSB log_* functions.
+# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
+# and status_of_proc is working.
+. /lib/lsb/init-functions
+
+#
+# Function that starts the daemon/service
+
+#
+do_start()
+{
+	# Return
+	#   0 if daemon has been started
+	#   1 if daemon was already running
+	#   2 if daemon could not be started
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
+		|| return 1
+	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
+		$DAEMON_ARGS \
+		|| return 2
+	# Add code here, if necessary, that waits for the process to be ready
+	# to handle requests from services started subsequently which depend
+	# on this one.  As a last resort, sleep for some time.
+}
+
+#
+# Function that stops the daemon/service
+#
+do_stop()
+{
+	# Return
+	#   0 if daemon has been stopped
+	#   1 if daemon was already stopped
+	#   2 if daemon could not be stopped
+	#   other if a failure occurred
+	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
+	RETVAL="$?"
+	[ "$RETVAL" = 2 ] && return 2
+	# Wait for children to finish too if this is a daemon that forks
+	# and if the daemon is only ever run from this initscript.
+	# If the above conditions are not satisfied then add some other code
+	# that waits for the process to drop all resources that could be
+	# needed by services started subsequently.  A last resort is to
+	# sleep for some time.
+	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
+	[ "$?" = 2 ] && return 2
+	# Many daemons don't delete their pidfiles when they exit.
+	rm -f $PIDFILE
+	return "$RETVAL"
+}
+
+#
+# Function that sends a SIGHUP to the daemon/service
+#
+do_reload() {
+	#
+	# If the daemon can reload its configuration without
+	# restarting (for example, when it is sent a SIGHUP),
+	# then implement that here.
+	#
+	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME
+	return 0
+}
+
+SCRIPTNAME=$1
+scriptbasename="$(basename $1)"
+echo "SN: $scriptbasename"
+if [ "$scriptbasename" != "init-d-library" ] ; then
+    script="$1"
+    shift
+    . $script
+else
+    exit 0
+fi
+
+NAME=$(basename $DAEMON)
+PIDFILE=/var/run/$NAME.pid
+
+# Exit if the package is not installed
+#[ -x "$DAEMON" ] || exit 0
+
+# Read configuration variable file if it is present
+[ -r /etc/default/$NAME ] && . /etc/default/$NAME
+
+# Load the VERBOSE setting and other rcS variables
+. /lib/init/vars.sh
+
+case "$1" in
+  start)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
+	do_start
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  stop)
+	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
+	do_stop
+	case "$?" in
+		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
+		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
+	esac
+	;;
+  status)
+	status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
+	;;
+  #reload|force-reload)
+	#
+	# If do_reload() is not implemented then leave this commented out
+	# and leave 'force-reload' as an alias for 'restart'.
+	#
+	#log_daemon_msg "Reloading $DESC" "$NAME"
+	#do_reload
+	#log_end_msg $?
+	#;;
+  restart|force-reload)
+	#
+	# If the "reload" option is implemented then remove the
+	# 'force-reload' alias
+	#
+	log_daemon_msg "Restarting $DESC" "$NAME"
+	do_stop
+	case "$?" in
+	  0|1)
+		do_start
+		case "$?" in
+			0) log_end_msg 0 ;;
+			1) log_end_msg 1 ;; # Old process is still running
+			*) log_end_msg 1 ;; # Failed to start
+		esac
+		;;
+	  *)
+		# Failed to stop
+		log_end_msg 1
+		;;
+	esac
+	;;
+  *)
+	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
+	exit 3
+	;;
+esac
+
+:
+

+ +

+ + + Tags: bootsystem, debian, english. + + +

Browser plugin for SPICE (spice-xpi) uploaded to Debian @@ -17660,7 +17871,7 @@ be the only one fitting our needs. :/

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