Merge pull request #74 from bebehei/signal-handling

use correct signal-handler for supervisord

README.md

@@ -154,5 +154,6 @@ All these folders are configured and able to get mounted as volume. The bottom o
 | /var/log/icinga2 | rw | logfolder for icinga2 (not neccessary) |
 | /var/log/icingaweb2 | rw | logfolder for icingaweb2 (not neccessary) |
 | /var/log/mysql | rw | logfolder for mysql (not neccessary) |
+| /var/log/supervisor | rw | logfolder for supervisord (not neccessary) |
 | /var/spool/icinga2 | rw | spool-folder for icinga2 (not neccessary) |
 | /var/cache/icinga2 | rw | cache-folder for icinga2 (not neccessary) |

content/etc/supervisor/conf.d/apache2.conf

@@ -0,0 +1,9 @@
+[program:apache2]
+command=/opt/supervisor/apache2_supervisor
+autorestart=true
+startretries=3
+# redirect output to stdout/stderr and do not use a regular logfile
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0

content/etc/supervisor/conf.d/fatalservicelistener.conf

@@ -0,0 +1,8 @@
+[eventlistener:fatalservice]
+command=/opt/supervisor/fatalservicelistener
+events=PROCESS_STATE_FATAL
+# redirect output to stdout/stderr and do not use a regular logfile
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0

content/etc/supervisor/conf.d/icinga2.conf

@@ -1,28 +1,9 @@
-[unix_http_server]
-file=/var/run/supervisor.sock
-chmod=0700
-
-[supervisord]
-nodaemon=true
-logfile=/tmp/supervisord.log
-logfile_maxbytes=50MB
-pidfile=/tmp/supervisord.pid
-
-[rpcinterface:supervisor]
-supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
-
-[supervisorctl]
-serverurl=unix:///var/run/supervisor.sock
-
-[program:apache2]
-command=/bin/bash -c "/opt/supervisor/apache2_supervisor"
-redirect_stderr=true
-
-[program:mysql]
-command=/bin/bash -c "/opt/supervisor/mysql_supervisor"
-redirect_stderr=true
-
 [program:icinga2]
-command=/bin/bash -c "/opt/supervisor/icinga2_supervisor"
-redirect_stderr=true
+command=/opt/supervisor/icinga2_supervisor
 autorestart=true
+startretries=3
+# redirect output to stdout/stderr and do not use a regular logfile
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0

content/etc/supervisor/conf.d/mysql.conf

@@ -0,0 +1,9 @@
+[program:mysql]
+command=/opt/supervisor/mysql_supervisor
+autorestart=true
+startretries=3
+# redirect output to stdout/stderr and do not use a regular logfile
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0

content/opt/run

@@ -48,4 +48,6 @@ Icinga Web 2 (/icingaweb2) default credentials: ${ICINGAWEB2_ADMIN_USER}:${ICING
 Starting Supervisor.
 END
 
-/usr/bin/supervisord -c /etc/supervisor/conf.d/icinga2.conf > /dev/null
+/usr/bin/supervisord -n &
+trap "supervisorctl shutdown && wait" SIGTERM
+wait

content/opt/supervisor/apache2_supervisor

@@ -1,17 +1,8 @@
 #!/bin/bash
 
-function shutdown()
-{
-    echo "`date +"%d.%m.%Y %T.%3N"` - Shutting down apache2"
-    /etc/init.d/apache2 stop
-}
-
-
-echo "`date +"%d.%m.%Y %T.%3N"` - Starting apache2"
-
-/etc/init.d/apache2 start
+service apache2 start
 
 # Allow any signal which would kill a process to stop server
-trap shutdown HUP INT QUIT ABRT KILL ALRM TERM TSTP
+trap "service apache2 stop" HUP INT QUIT ABRT KILL ALRM TERM TSTP
 
 while pgrep -u www-data apache2 > /dev/null; do sleep 5; done

content/opt/supervisor/fatalservicelistener

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+# eventlistener to shutdown on first service event
+# configured on events PROCESS_STATE_FATAL, it shuts down
+# on first failing service. Useful for docker-containers
+
+# Report readiness to supervisord
+echo READY
+
+# Wait for first input (first fatal event)
+read line
+
+# and finally shutdown
+supervisorctl shutdown

content/opt/supervisor/icinga2_supervisor

@@ -1,14 +1,6 @@
 #!/bin/bash
 
-function shutdown()
-{
-    echo "`date +"%d.%m.%Y %T.%3N"` - Shutting down icinga2"
-    /etc/init.d/icinga2 stop
-}
-
-echo "`date +"%d.%m.%Y %T.%3N"` - Starting icinga2"
-
-/etc/init.d/icinga2 start
+service icinga2 start
 
 # Kickstart is only possible after icinga2 start -> not in setup script
 if [ "${ICINGA2_FEATURE_DIRECTOR}" == "true" ] || [ "${ICINGA2_FEATURE_DIRECTOR}" == "1" ]; then
@@ -18,6 +10,6 @@ if [ "${ICINGA2_FEATURE_DIRECTOR}" == "true" ] || [ "${ICINGA2_FEATURE_DIRECTOR}
 fi
 
 # Allow any signal which would kill a process to stop server
-trap shutdown HUP INT QUIT ABRT KILL ALRM TERM TSTP
+trap "service icinga2 stop" HUP INT QUIT ABRT KILL ALRM TERM TSTP
 
 while pgrep -u nagios icinga2 > /dev/null; do sleep 5; done

content/opt/supervisor/mysql_supervisor

@@ -1,16 +1,8 @@
 #!/bin/bash
 
-function shutdown()
-{
-    echo "`date +"%d.%m.%Y %T.%3N"` - Shutting down mysql"
-    /etc/init.d/mysql stop
-}
-
-echo "`date +"%d.%m.%Y %T.%3N"` - Starting mysql"
-
-/etc/init.d/mysql start
+service mysql start
 
 # Allow any signal which would kill a process to stop server
-trap shutdown HUP INT QUIT ABRT KILL ALRM TERM TSTP
+trap "service mysql stop" HUP INT QUIT ABRT KILL ALRM TERM TSTP
 
 while pgrep -u mysql mysql > /dev/null; do sleep 5; done