Index: openacs-4/packages/acs-core-docs/www/install-openacs-keepalive.adp =================================================================== RCS file: /usr/local/cvsroot/openacs-4/packages/acs-core-docs/www/install-openacs-keepalive.adp,v diff -u -r1.4 -r1.4.2.1 --- openacs-4/packages/acs-core-docs/www/install-openacs-keepalive.adp 25 Apr 2018 08:38:27 -0000 1.4 +++ openacs-4/packages/acs-core-docs/www/install-openacs-keepalive.adp 2 Mar 2019 19:30:05 -0000 1.4.2.1 @@ -1,5 +1,5 @@ -{/doc/acs-core-docs {ACS Core Documentation}} {Starting and Stopping an OpenACS instance.} +{/doc/acs-core-docs/ {ACS Core Documentation}} {Starting and Stopping an OpenACS instance.} Starting and Stopping an OpenACS instance.

Starting and Stopping an OpenACS instance.

The simplest way to start and stop and OpenACS site is to run -the startup shell script provided, /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools/run. +the startup shell script provided, /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools/run. This runs as a regular task, and logs to the logfile. To stop the site, kill the script.

A more stable way to run OpenACS is with a "keepalive" mechanism of some sort, so that whenever the server halts or is @@ -40,72 +40,72 @@ started by the file /service/$OPENACS_SERVICE_NAME/run. But we use a symlink to make it easier to add and remove stuff from the /service, so the actual -location is /var/lib/aolserver/$OPENACS_SERVICE_NAMEetc/daemontools/run.

Daemontools creates additional files and directories to track +location is /var/lib/aolserver/$OPENACS_SERVICE_NAMEetc/daemontools/run.

Daemontools creates additional files and directories to track status and log. A daemontools directory is included in the OpenACS -tarball at /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools. +tarball at /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools. To use it, first ill any existing AOLserver instances. As root, link the daemontools directory into the /service directory. Daemontools' svscan process checks this directory every five seconds, and will quickly execute run.

[$OPENACS_SERVICE_NAME etc]$ killall nsd
 nsd: no process killed
-[$OPENACS_SERVICE_NAME etc]$ emacs /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools/run
+[$OPENACS_SERVICE_NAME etc]$ emacs /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools/run
 [$OPENACS_SERVICE_NAME etc]$ exit
 
-[root root]# ln -s /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools/ /service/$OPENACS_SERVICE_NAME
+[root root]# ln -s /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/daemontools/ /service/$OPENACS_SERVICE_NAME
 
-

Verify that AOLserver is running.

[root root]# ps -auxw | grep nsd$OPENACS_SERVICE_NAME   5562 14.4  6.2 22436 15952 ?       S    11:55   0:04 /usr/local/aolserver/bin/nsd -it /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/config.tcl -u serve
+

Verify that AOLserver is running.

[root root]# ps -auxw | grep nsd$OPENACS_SERVICE_NAME   5562 14.4  6.2 22436 15952 ?       S    11:55   0:04 /usr/local/aolserver/bin/nsd -it /var/lib/aolserver/$OPENACS_SERVICE_NAME/etc/config.tcl -u serve
 root      5582  0.0  0.2  3276  628 pts/0    S    11:55   0:00 grep nsd
 [root root]#
  • -

    The user $OPENACS_SERVICE_NAME can now -control the service $OPENACS_SERVICE_NAME with these +

    The user $OPENACS_SERVICE_NAME can now control +the service $OPENACS_SERVICE_NAME with these commands:

    • -svc -d /service/$OPENACS_SERVICE_NAME - - -Bring the server down

    • -svc -u /service/$OPENACS_SERVICE_NAME - - -Start the server up and leave it in keepalive mode.

    • -svc -o /service/$OPENACS_SERVICE_NAME - - -Start the server up once. Do not restart it if it stops.

    • -svc -t /service/$OPENACS_SERVICE_NAME - - Stop -and immediately restart the server.

    • -svc -k /service/$OPENACS_SERVICE_NAME - - -Sends the server a KILL signal. This is like KILL -9. AOLserver -exits immediately. If svc -t fails to fully kill AOLserver, use -this option. This does not take the server out of keepalive mode, -so it should still bounce back up immediately.

      • +svc -d /service/$OPENACS_SERVICE_NAME + - Bring +the server down

    • +svc -u /service/$OPENACS_SERVICE_NAME + - Start +the server up and leave it in keepalive mode.

    • +svc -o /service/$OPENACS_SERVICE_NAME + - Start +the server up once. Do not restart it if it stops.

    • +svc -t /service/$OPENACS_SERVICE_NAME + - Stop and +immediately restart the server.

    • +svc -k /service/$OPENACS_SERVICE_NAME + - Sends +the server a KILL signal. This is like KILL -9. AOLserver exits +immediately. If svc -t fails to fully kill AOLserver, use this +option. This does not take the server out of keepalive mode, so it +should still bounce back up immediately.

  • Install a script to automate the stopping and starting of AOLserver services via daemontools. You can then restart a service -via restart-aolserver $OPENACS_SERVICE_NAME +via restart-aolserver $OPENACS_SERVICE_NAME -

    [root root]# cp /var/lib/aolserver/$OPENACS_SERVICE_NAME/packages/acs-core-docs/www/files/restart-aolserver-daemontools.txt /usr/local/bin/restart-aolserver
+
    [root root]# cp /var/lib/aolserver/$OPENACS_SERVICE_NAME/packages/acs-core-docs/www/files/restart-aolserver-daemontools.txt /usr/local/bin/restart-aolserver
 [root root]# chmod 755 /usr/local/bin/restart-aolserver
 [root root]#

  • At this point, these commands will work only for the root user. Grant permission for the web group to use svc commands on the -$OPENACS_SERVICE_NAME -server.

    [root root]# /usr/local/bin/svgroup web /service/$OPENACS_SERVICE_NAME
+$OPENACS_SERVICE_NAME
+server.
    [root root]# /usr/local/bin/svgroup web /service/$OPENACS_SERVICE_NAME
 
 [root root]#
  • -

    Verify that the controls work. You may want to tail -f /var/lib/aolserver/$OPENACS_SERVICE_NAME/log/$OPENACS_SERVICE_NAME-error.log +

    Verify that the controls work. You may want to tail -f /var/lib/aolserver/$OPENACS_SERVICE_NAME/log/$OPENACS_SERVICE_NAME-error.log in another window, so you can see what happens when you type these commands.

    More information can be found on the AOLserver Daemontools page.

    • -

    Table 6.1. How it +

    Table 6.1. How it Works

    @@ -115,7 +115,7 @@ -
    svscanbootinit/etc/inittabps -auxw | grep readproctitlen/a 
    aolserversupervise (a child of svscanboot)/service/$OPENACS_SERVICE_NAME/run/var/lib/aolserver/$OPENACS_SERVICE_NAME/log/error.log/var/lib/aolserver/$OPENACS_SERVICE_NAME/log/$OPENACS_SERVICE_NAME.logsvc -k /service/$OPENACS_SERVICE_NAME +aolserversupervise (a child of svscanboot)/service/$OPENACS_SERVICE_NAME/run/var/lib/aolserver/$OPENACS_SERVICE_NAME/log/error.log/var/lib/aolserver/$OPENACS_SERVICE_NAME/log/$OPENACS_SERVICE_NAME.logsvc -k /service/$OPENACS_SERVICE_NAME
    postgresqlRedhat init scripts during boot/etc/init.d/postgresql/usr/local/pgsql/data/server.log service postgresql start (Red Hat),