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scripts: Rework notify.sh to use notify.d/ directory
This makes it easier to add notification handlers. Signed-off-by: Martin Schwenke <martin@meltin.net> (This used to be ctdb commit d29e9a420b133088bf23a847c8d1dbce56c25eb0)
This commit is contained in:
Martin Schwenke
Amitay Isaacs
parent
5aeae9744e
commit
bb39f0a186
@ -319,6 +319,7 @@ install: all manpages $(PMDA_INSTALL)
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mkdir -p $(DESTDIR)$(etcdir)/ctdb/events.d
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mkdir -p $(DESTDIR)$(etcdir)/ctdb/nfs-rpc-checks.d
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mkdir -p $(DESTDIR)$(etcdir)/sudoers.d/
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mkdir -p $(DESTDIR)$(etcdir)/ctdb/notify.d
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mkdir -p $(DESTDIR)$(docdir)/ctdb
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${INSTALLCMD} -m 644 ctdb.pc $(DESTDIR)$(libdir)/pkgconfig
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${INSTALLCMD} -m 755 bin/ctdb $(DESTDIR)$(bindir)
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@ -376,6 +377,7 @@ install: all manpages $(PMDA_INSTALL)
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if [ -f doc/ltdbtool.1.html ];then ${INSTALLCMD} -m 644 doc/ltdbtool.1.html $(DESTDIR)$(docdir)/ctdb; fi
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if [ -f doc/ping_pong.1.html ];then ${INSTALLCMD} -m 644 doc/ping_pong.1.html $(DESTDIR)$(docdir)/ctdb; fi
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if [ ! -f $(DESTDIR)$(etcdir)/ctdb/notify.sh ];then ${INSTALLCMD} -m 755 config/notify.sh $(DESTDIR)$(etcdir)/ctdb; fi
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if [ ! -f $(DESTDIR)$(etcdir)/ctdb/notify.d/README ];then ${INSTALLCMD} -m 755 config/notify.d.README $(DESTDIR)$(etcdir)/ctdb/notify.d/README ; fi
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${INSTALLCMD} -m 755 config/debug-hung-script.sh $(DESTDIR)$(etcdir)/ctdb
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if [ ! -f $(DESTDIR)$(etcdir)/ctdb/ctdb-crash-cleanup.sh ];then ${INSTALLCMD} -m 755 config/ctdb-crash-cleanup.sh $(DESTDIR)$(etcdir)/ctdb; fi
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if [ ! -f $(DESTDIR)$(etcdir)/ctdb/gcore_trace.sh ];then ${INSTALLCMD} -m 755 config/gcore_trace.sh $(DESTDIR)$(etcdir)/ctdb; fi
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44
ctdb/config/notify.d.README
Executable file
44
ctdb/config/notify.d.README
Executable file
@ -0,0 +1,44 @@
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This directory should contain executable programs to handle CTDB event
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notifications. The first and only argument passed to each program is
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the event, which is one of:
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init, setup, startup, unhealthy, healthy
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To use notifications with this directory then you need to set:
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CTDB_NOTIFY_SCRIPT=/etc/ctdb/notify.sh
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in your CTDB configuration file.
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An example script that sends SNMP traps for unhealthy/healthy might
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look like this:
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#!/bin/sh
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case "$1" in
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unhealthy)
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# Send an SNMP trap saying that the node is unhealthy:
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snmptrap -m ALL -v 1 -c public 10.1.1.105 ctdb \
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$(hostname) 0 0 $(date +"%s") ctdb.nodeHealth.0 i 1
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;;
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healthy)
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# Send an SNMP trap saying that the node is healthy again:
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snmptrap -m ALL -v 1 -c public 10.1.1.105 ctdb \
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$(hostname) 0 0 $(date +"%s") ctdb.nodeHealth.0 i 0
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;;
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esac
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Alternatively, email could be sent:
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#!/bin/sh
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case "$1" in
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unhealthy)
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mail -s "$(hostname) is UNHEALTHY" foo@example.com </dev/null >/dev/null 2>&1
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;;
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healthy)
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mail -s "$(hostname) is HEALTHY" foo@example.com </dev/null >/dev/null 2>&1
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;;
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esac
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When adding programs please note the exclusion patterns in notify.sh.
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@ -3,47 +3,25 @@
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# This script is activated by setting CTDB_NOTIFY_SCRIPT=/etc/ctdb/notify.sh
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# in /etc/sysconfig/ctdb
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# This is script is invoked from ctdb when node UNHEALTHY flag changes.
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# and can be used to send SNMPtraps, email, etc
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# when the status of a node changes
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# This is script is invoked from ctdb when certain events happen. See
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# /etc/ctdb/notify.d/README for more details.
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d=$(dirname $0)
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nd="${d}/notify.d"
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event="$1"
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shift
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ok=true
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case $event in
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unhealthy)
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#
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# Send an snmptrap that the node is unhealthy :
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# snmptrap -m ALL -v 1 -c public 10.1.1.105 ctdb `hostname` 0 0 `date +"%s"` ctdb.nodeHealth.0 i 1
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#
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# or send an email :
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# mail foo@bar -s "`hostname` is UNHEALTHY" ...
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#
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# or do something else ...
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;;
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healthy)
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#
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# Send an snmptrap that the node is healthy again :
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# snmptrap -m ALL -v 1 -c public 10.1.1.105 ctdb `hostname` 0 0 `date +"%s"` ctdb.nodeHealth.0 i 0
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#
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# or send an email :
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# mail foo@bar -s "`hostname` is HEALTHY" ...
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#
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# or do something else ...
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;;
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startup)
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# do some extra magic when ctdb has finished the initial
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# recovery?
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;;
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for i in "${nd}/"* ; do
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# Don't run files matching basename
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case "${i##*/}" in
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*~|*,|*.rpm*|*.swp|README) continue ;;
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esac
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setup)
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# do some extra magic when ctdb has setup itself?
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;;
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# Files must be executable
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[ -x "$i" ] || continue
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init)
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# do some extra magic when ctdb has started?
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;;
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esac
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# Flag failures
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"$i" "$1" || ok=false
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done
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exit 0
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$ok
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@ -127,6 +127,7 @@ rm -rf $RPM_BUILD_ROOT
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%config(noreplace) %{_sysconfdir}/ctdb/gcore_trace.sh
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%config(noreplace) %{_sysconfdir}/ctdb/functions
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%attr(755,root,root) %{initdir}/ctdb
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%attr(755,root,root) %{_sysconfdir}/ctdb/notify.d
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%{_docdir}/ctdb/README
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%{_docdir}/ctdb/COPYING
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@ -162,6 +163,7 @@ rm -rf $RPM_BUILD_ROOT
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%config(noreplace) %{_sysconfdir}/ctdb/nfs-rpc-checks.d/40.mountd.check
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%config(noreplace) %{_sysconfdir}/ctdb/nfs-rpc-checks.d/50.rquotad.check
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%{_sysconfdir}/ctdb/statd-callout
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%{_sysconfdir}/ctdb/notify.d/README
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%{_sbindir}/ctdbd
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%{_bindir}/ctdb
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%{_bindir}/smnotify
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