[Linux-HA] Almost done with my HA setup, but somethign not working
Nick Duda
nduda78 at comcast.net
Mon Apr 21 18:32:35 MDT 2008
(sorry for the long email, but all my configs are here to view)
I posted before about HA with 2 squid servers. It's just about done, but
stumbling on something. Everytime i manually cause something to happen
in hopes to see it failover, it doesnt. For example, I get crm_mon to
show everything as I want it, and when I kill squid (and prevent the xml
from restarting it) it just goes into a failed state...more below.
Anyone see anything wrong with my configs?
Server #1
Hostname: ha-1
eth0 - lan (192.168.95.1)
eth1 - xover to eth1 on other server
Server #2
Hostname: ha-2
eth0 - lan (192.168.95.2)
eth1 - xover to eth1 on other server
ha.cf on each server:
bcast eth1
mcast eth0 239.0.0.2 694 1 0
node ha-1 ha-2
crm on
Not using haresources because of crm
Here is the output from crm_mon:
============
Last updated: Mon Apr 21 15:44:53 2008
Current DC: ha-1 (2422b230-22f2-451b-aa95-0b783eccab8d)
2 Nodes configured.
1 Resources configured.
============
Node: ha-1 (2422b230-22f2-451b-aa95-0b783eccab8d): online
Node: ha-2 (1691d699-2a81-4545-8242-b00862431514): online
Resource Group: squid-cluster
ip0 (heartbeat::ocf:IPaddr2): Started ha-1
squid (heartbeat::ocf:squid): Started ha-1
If squid stops on the current heartbeat serer, ha-1, it will restart
within 60sec...so the scripting is working. If i stop the squid process
and rename it in /etc/init.d/squid to something else, the script wont be
able to execute the squid start and should failover to ha-2, but it
doesnt, instead this appears (on both ha-1 and ha-2):
============
Last updated: Mon Apr 21 15:47:49 2008
Current DC: ha-1 (2422b230-22f2-451b-aa95-0b783eccab8d)
2 Nodes configured.
1 Resources configured.
============
Node: ha-1 (2422b230-22f2-451b-aa95-0b783eccab8d): online
Node: ha-2 (1691d699-2a81-4545-8242-b00862431514): online
Resource Group: squid-cluster
ip0 (heartbeat::ocf:IPaddr2): Started ha-1
squid (heartbeat::ocf:squid): Started ha-1 (unmanaged) FAILED
Failed actions:
squid_stop_0 (node=ha-1, call=74, rc=1): Error
------------ /etc/init.d/squid ------------
#!/bin/bash
# squid This shell script takes care of starting and stopping
# Squid Internet Object Cache
#
# chkconfig: - 90 25
# description: Squid - Internet Object Cache. Internet object caching is \
# a way to store requested Internet objects (i.e., data available \
# via the HTTP, FTP, and gopher protocols) on a system closer to the \
# requesting site than to the source. Web browsers can then use the \
# local Squid cache as a proxy HTTP server, reducing access time as \
# well as bandwidth consumption.
# pidfile: /var/run/squid.pid
# config: /etc/squid/squid.conf
PATH=/usr/bin:/sbin:/bin:/usr/sbin
export PATH
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0
# check if the squid conf file is present
[ -f /usr/local/squid/etc/squid.conf ] || exit 0
# determine the name of the squid binary
[ -f /usr/sbin/squid ] && SQUID=squid
[ -z "$SQUID" ] && exit 0
# determine which one is the cache_swap directory
CACHE_SWAP=`sed -e 's/#.*//g' /usr/local/squid/etc/squid.conf | \
grep cache_dir | sed -e 's/cache_dir//' | \
cut -d ' ' -f 2`
[ -z "$CACHE_SWAP" ] && CACHE_SWAP=/cache
# default squid options
# -D disables initial dns checks. If you most likely will not to have an
# internet connection when you start squid, uncomment this
#SQUID_OPTS="-D"
RETVAL=0
case "$1" in
start)
echo -n "Starting $SQUID: "
for adir in $CACHE_SWAP; do
if [ ! -d $adir/00 ]; then
echo -n "init_cache_dir $adir... "
$SQUID -z -F 2>/dev/null
fi
done
$SQUID $SQUID_OPTS &
RETVAL=$?
echo $SQUID
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/$SQUID
;;
stop)
echo -n "Stopping $SQUID: "
$SQUID -k shutdown &
RETVAL=$?
if [ $RETVAL -eq 0 ] ; then
rm -f /var/lock/subsys/$SQUID
while : ; do
[ -f /var/run/squid.pid ] || break
sleep 2 && echo -n "."
done
echo "done"
else
echo
fi
;;
reload)
$SQUID $SQUID_OPTS -k reconfigure
exit $?
;;
restart)
$0 stop
$0 start
;;
status)
status $SQUID
$SQUID -k check
exit $?
;;
probe)
exit 0;
;;
*)
echo "Usage: $0 {start|stop|status|reload|restart}"
exit 1
esac
exit $RETVAL
------------ End /etc/init.d/squid ------------
------------ squid.xml (i import with cibadmin -U -x) ------------
<cib>
<configuration>
<crm_config>
<nodes/>
<resources>
<group id="squid-cluster">
<primitive class="ocf" provider="heartbeat"
type="IPaddr2" id="ip0">
<instance_attributes id="ia-ip0">
<attributes>
<nvpair id="ia-ip0-1"
name="ip" value="192.168.95.5"/>
<nvpair id="ia-ip0-2"
name="cidr_netmask" value="24"/>
<nvpair id="ia-ip0-3"
name="nic" value="eth0"/>
</attributes>
</instance_attributes>
<operations>
<op id="ip0-monitor0"
name="monitor" interval="60s" timeout="120s" start_delay="1m"/>
</operations>
</primitive>
<primitive class="ocf" provider="heartbeat"
type="squid" id="squid">
<operations>
<op name="monitor"
interval="60s" timeout="120s" start_delay="1m" id="monitor-squid"/>
</operations>
</primitive>
</group>
</resources>
<constraints/>
</configuration>
<status/>
</cib>
------------ End squid.xml ------------
------------ cib.xml ------------
<cib generated="false" admin_epoch="0" have_quorum="true"
ignore_dtd="false" num_peers="0" cib_feature_revision="2.0" epoch="3"
num_updates="2" cib-last-written="Mon Apr 21 11:52:24 2008"
ccm_transition="1">
<configuration>
<crm_config>
<cluster_property_set id="cib-bootstrap-options">
<attributes>
<nvpair id="cib-bootstrap-options-dc-version"
name="dc-version" value="2.1.3-node:
552305612591183b1628baa5bc6e903e0f1e26a3"/>
</attributes>
</cluster_property_set>
</crm_config>
<nodes>
<node id="2422b230-22f2-451b-aa95-0b783eccab8d" uname="ha-1"
type="normal"/>
<node id="1691d699-2a81-4545-8242-b00862431514" uname="ha-2"
type="normal"/>
</nodes>
<resources>
<group id="squid-cluster">
<primitive class="ocf" provider="heartbeat" type="IPaddr2"
id="ip0">
<instance_attributes id="ia-ip0">
<attributes>
<nvpair id="ia-ip0-1" name="ip" value="192.168.95.5"/>
<nvpair id="ia-ip0-2" name="cidr_netmask" value="24"/>
<nvpair id="ia-ip0-3" name="nic" value="eth0"/>
</attributes>
</instance_attributes>
<operations>
<op id="ip0-monitor0" name="monitor" interval="60s"
timeout="120s" start_delay="1m"/>
</operations>
</primitive>
<primitive class="ocf" provider="heartbeat" type="squid"
id="squid">
<operations>
<op name="monitor" interval="60s" timeout="120s"
start_delay="1m" id="monitor-squid"/>
</operations>
</primitive>
</group>
</resources>
<constraints/>
</configuration>
</cib>
------------ End cib.xml ------------
------------ squid ocf file ------------
#!/bin/sh
#. $HA_HBCONF_DIR/shellfuncs
. /usr/lib/ocf/resource.d/heartbeat/.ocf-shellfuncs
INIT_SCRIPT=/etc/init.d/squid
case "$1" in
start)
${INIT_SCRIPT} start > /dev/null 2>&1 && exit || exit 1
;;
stop)
${INIT_SCRIPT} stop > /dev/null 2>&1 && exit || exit 1
;;
status)
${INIT_SCRIPT} status > /dev/null 2>&1 && exit || exit 1
;;
monitor)
# Check if Ressource is stopped
${INIT_SCRIPT} status > /dev/null 2>&1 || exit 7
# Otherwise check services (XXX: Maybe loosen retry /
timeout)
wget -o /dev/null -O /dev/null -T 1 -t 1
http://localhost:3128/ && exit || exit 1
;;
meta-data)
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="squid">
<version>1.0</version>
<longdesc lang="en">
OCF Ressource Agent on top of squid init script shipped with debian.
</longdesc>
<shortdesc lang="en">OCF Ressource Agent on top of squid init script
shipped with debian.</shortdesc>
<actions>
<action name="start" timeout="90" />
<action name="stop" timeout="100" />
<action name="status" timeout="60" />
<action name="monitor" depth="0" timeout="30s" interval="10s"
start-delay="10s" />
<action name="meta-data" timeout="5s" />
<action name="validate-all" timeout="20s" />
</actions>
</resource-agent>
END
------------ End squid ocf file ------------
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