Serge Dubrouski escribió:
On Tue, Oct 21, 2008 at 4:12 AM, Adrian Chapela
<[EMAIL PROTECTED]> wrote:
Again I am testing with a more simple config file, with only one
master/slave resource.
In this case the resource becomes to be a Master but in the slave server the
DRBD is not running. The modules is not loaded and crm_mon says that drbd is
running as Slave:
Master/Slave Set: ms-drbd0
drbd0:0 (ocf::heartbeat:drbd): Master debianquagga2
drbd0:1 (ocf::heartbeat:drbd): Started debianquagga1
Resource configuration:
<resources>
<master_slave id="ms-drbd0">
<meta_attributes id="ma-ms-drbd0">
<attributes>
<nvpair id="ma-ms-drbd0-1"
name="clone_max" value="2"/>
<nvpair id="ma-ms-drbd0-2"
name="clone_node_max" value="1"/>
<nvpair id="ma-ms-drbd0-3"
name="master_max" value="1"/>
<nvpair id="ma-ms-drbd0-4"
name="master_node_max" value="1"/>
<nvpair id="ma-ms-drbd0-5"
name="notify" value="yes"/>
<nvpair id="ma-ms-drbd0-6"
name="globally_unique" value="false"/>
</attributes>
</meta_attributes>
<primitive id="drbd0" class="ocf" provider="heartbeat"
type="drbd">
<instance_attributes id="ia-drbd0">
<attributes>
<nvpair id="ia-drbd0-1"
name="drbd_resource" value="mail_disk"/>
</attributes>
</instance_attributes>
<operations>
<op id="op-ms-drbd2-1" name="monitor"
interval="59s" timeout="60s" start_delay="30s" role="Master"/>
<op id="op-ms-drbd2-2" name="monitor"
interval="60s" timeout="60s" start_delay="30s" role="Slave"/>
</operations>
</primitive>
</master_slave>
</resources>
Why heartbeat is not monitoring the service in the slave node ?
It does. I think that your slave is in Standalone mode in DRBD, check
it with drbdadm cstate.
Adrian Chapela escribió:
Hello,
I am doing new tests. I am doing this tests to improve an old config and
to try to understand best multistate resources.
I can't make it to works, my configuration is always bad.... I don't know
anything. I am using 2.1.4 release.
The cluster is only doing a notify action and then stop action. If I
started drbd myself, the cluster bring drbd in an Uncofigured resources
state. I don't know the reason. Should I specify a start action ?
[snip]
I found a better script but it wasn't multi state RA. I modified the
script to fit my Multi State needs. I attached to this mail and you
could download the last release (Now is the same as attached version)
from: http://code.adrianchapela.net/heartbeat/drbd_HA
Could you have a look ? Could you test it ?
Now I have solved my problem of start the drbd resource in two nodes and
one of them become a Master. I have now some troubles with the failover
(Old Master is down....then Slave node detecst it but it doesn't do
anything to be the new Master... ). I suppose an error in location rules.
Thank you
#!/bin/sh
#
# License: GNU General Public License (GPL)
# Author: Martin Fick
# Date: 04/19/07
# Origin: Hacked together from many other drbd and ocf scripts
#
# Adapted to be a MultState RA by: Adrian Chapela
# Date: 21/10/08
#
# This script manages a drbd device
#
# It can make a drbd device primary or secondary
#
# Be sure to only allow this resource to run on the
# two specific nodes where your drbd device is setup.
#
# usage: $0 {start|stop|status|monitor|meta-data|promote|demote}
#
#
# OCF parameters are as below
# OCF_RESKEY_drbd_resource
#
#######################################################################
#
#
# ocf_logi is a custom error log made by Martin Fick. I (Adrian Chapela)
modified this function to log to another filename 'drbd_HA.log'.
# To mantain compatibility with other Hearbeat RA, I added ocf_log in all
locations which ocf_logi is used. This duplicates entries in logs, but I
considered that is more
# positive to us to debug OCF script and Heartbeat configuration (to be it
was..).
#
# We use the STATUS_CODES from here
#. /usr/lib/heartbeat/ocf-shellfuncs
# The next lines are to be more compatible with next releases of Heartbeat
if [ -n "$OCF_DEBUG_LIBRARY" ]; then
. $OCF_DEBUG_LIBRARY
else
. ${OCF_ROOT}/resource.d/heartbeat/.ocf-shellfuncs
fi
USAGE="usage: $0 {start|stop|status|monitor|meta-data|promote|demote}";
#######################################################################
#HA_D=/etc/ha.d
#. ${HA_D}/shellfuncs
meta_data() {
cat <<END
<?xml version="1.0"?>
<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd">
<resource-agent name="drbd">
<version>0.0</version>
<longdesc lang="en">
This script manages a drbd device
It can make a drbd device primary or secondary
</longdesc>
<shortdesc lang="en">OCF MultiState Resource Agent compliant drbd
script.</shortdesc>
<parameters>
<parameter name="drbd_resource" unique="1" required="1">
<longdesc lang="en">
The drbd resource is a resource defined in /etc/drbd.conf
</longdesc>
<shortdesc lang="en">drbd resource</shortdesc>
<content type="string" default="" />
</parameter>
</parameters>
<actions>
<action name="start" timeout="1m" />
<action name="stop" timeout="1m" />
<action name="monitor" depth="10" timeout="1m" interval="5s"
start-delay="1m" />
<action name="meta-data" timeout="1m" />
<action name="promote" timeout="1m" />
<action name="demote" timeout="1m" />
</actions>
</resource-agent>
END
exit $OCF_SUCCESS
}
ocf_logi() { # type msg
# if [ "$1" != "err" ] ; then return ; fi
shift
echo `date`" - $@" >> /var/log/drbd_HA.log
}
drbd_reload() {
drbd_stop || return
drbd_start
}
drbd_stop() {
#
# Is the device already secondary?
#
# drbd_status
# if [ $? = $OCF_NOT_RUNNING ]; then exit $OCF_NOT_RUNNING; fi
#stop="$($DRBDADM secondary $RES 2>&1)"
stop="$($DRBDADM down $RES 2>&1)"
drbd_status ; rc=$?
if [ $rc = $OCF_NOT_RUNNING ]; then exit 0; fi
ocf_logi err "$RES stop failed: ($rc)"
ocf_log err "$RES stop failed: ($rc)"
ocf_logi err "$stop"
ocf_log err "$stop"
return 1
}
drbd_start() {
drbd_status
if [ $? = $OCF_SUCCESS ]; then return $OCF_SUCCESS; fi
if is_drbd_enabled; then
: OK
else
do_cmd modprobe -s drbd `$DRBDADM sh-mod-parms` || {
ocf_logi err "Can not load the drbd module."$'\n';
ocf_log err "Can not load the drbd module."$'\n';
return $OCF_ERR_GENERIC
}
ocf_logi debug "$RES start: Module loaded."
ocf_log debug "$RES start: Module loaded."
fi
if [ "$STATE" != "Secondary" ]; then
$DRBDADM up $RES
fi
# try several times, in case heartbeat deadtime
# was smaller than drbd ping time
#try=6
#while true; do
# start="$($DRBDADM primary $RES 2>&1)" && break
# let "--try" || break
# sleep 1
#done
drbd_status ; rc=$?
if [ $rc = $OCF_SUCCESS ]; then return $OCF_SUCCESS; fi
ocf_logi err "$RES start failed: ($rc)"
ocf_logi err "$start"
ocf_log err "$RES start failed: ($rc)"
ocf_log err "$start"
return $rc
}
drbd_status() {
ST=$( $DRBDADM state $RES 2>&1 )
STATE=${ST%/*}
if [ "$STATE" = "Primary" ]; then
echo "Primary - running as Master"
rc=$OCF_RUNNING_MASTER
elif [ "$STATE" = "Secondary" ]; then
echo "Secondary - Slave"
rc=$OCF_SUCCESS
else
echo "$ST"
rc=$OCF_NOT_RUNNING
fi
return $rc
}
drbd_promote() {
if is_drbd_enabled; then
: OK
else
ocf_logi err "drbd is not enabled"
ocf_log err "drbd is not enabled"
return $OCF_ERR_GENERIC
fi
drbd_status
if [ "$STATE" != "Secondary" ]; then
ocf_logi err $RES" DRBD is not prepared to be a Master in this node
;)"
ocf_log err $RES" DRBD is not prepared to be a Master in this node
;)"
return $OCF_ERR_GENERIC
else
if $DRBDADM primary $RES ; then
# TODO: WORK AROUND because drbdadm has a bug and
# reports success even if it failed :-(
drbd_status
if [ "$STATE" = "Primary" ]; then
ocf_logi info "$RES promote: primary succeeded"
ocf_log info "$RES promote: primary succeeded"
return $OCF_SUCCESS
else
ocf_logi err "$RES promote: Not primary despite drbdadm
call."
ocf_log err "$RES promote: Not primary despite drbdadm
call."
fi
else
ocf_logi err "$RES promote: Failed with exit code $?."
ocf_log err "$RES promote: Failed with exit code $?."
fi
return $OCF_ERR_GENERIC
fi
}
drbd_demote() {
# Always I test drbd module
if is_drbd_enabled; then
: OK
else
ocf_logi err "drbd is not enabled"
ocf_log err "drbd is not enabled"
return $OCF_ERR_SUCCESS
fi
drbd_status
if [ "$STATE" = "Secondary" ]; then
ocf_logi err $RES" demote: already secondary"
ocf_log err $RES" demote: already secondary"
return $OCF_SUCCESS
fi
if [ "$STATE" = "Not configured" ]; then
ocf_logi debug "$RESOURCE demote: already stopped"
ocf_log debug "$RESOURCE demote: already stopped"
return $OCF_NOT_RUNNING
fi
# TODO: this is a _force_ operation. we may need to kill higher
# levels (or switch them to r/o) to be able to demote drbd.
# figure out how...
if $DRBDADM primary $RES ; then
sleep 2
drbd_status
if [ "$STATE" = "Primary" ]; then
ocf_logi err "$RESOURCE demote: still primary!"
ocf_log err "$RESOURCE demote: still primary!"
return $OCF_ERR_GENERIC
fi
ocf_logi debug "$RESOURCE demote: succeeded"
ocf_log debug "$RESOURCE demote: succeeded"
return $OCF_SUCCESS
else
ocf_logi err "$RESOURCE demote: Failed with exit code $?."
ocf_log err "$RESOURCE demote: Failed with exit code $?."
return $OCF_ERR_GENERIC
fi
return $OCF_SUCCESS
}
drbd_monitor() {
drbd_status
}
do_cmd() {
local cmd="$*"
ocf_logi Debug "$RES: Calling $cmd"
ocf_log Debug "$RES: Calling $cmd"
local cmd_out=$($cmd 2>&1)
ret=$?
if [ $ret -ne 0 ]; then
ocf_logi err "$RES: Called $cmd"
ocf_logi err "$RES: Exit code $ret"
ocf_logi err "$RES: Command output: $cmd_out"
ocf_log err "$RES: Called $cmd"
ocf_log err "$RES: Exit code $ret"
ocf_log err "$RES: Command output: $cmd_out"
else
ocf_logi debug "$RES: Exit code $ret"
ocf_logi debug "$RES: Command output: $cmd_out"
ocf_log debug "$RES: Exit code $ret"
ocf_log debug "$RES: Command output: $cmd_out"
fi
echo $cmd_out
return $ret
}
is_drbd_enabled () {
if [ -f /proc/drbd ]; then
return 0
fi
return 1
}
usage() {
echo $USAGE >&2
}
#
# Make a drbd device primary or secondary
#
DEFAULTFILE="/etc/default/drbd"
DRBDADM="/sbin/drbdadm"
if [ -f $DEFAULTFILE ]; then
. $DEFAULTFILE
fi
if
[ $# -ne 1 ]
then
usage
exit $OCF_ERR_ARGS
fi
RES="$OCF_RESKEY_drbd_resource"
case $1 in
info) cat <<-!INFO
Abstract=DRBD Device Manager
Argument=DRBD Resource Name
Description:
A DRBD device is a network raid block device which can have a primary
and a secondary backing
device each on a separate machine. DRBD will keep them in sync.
Please rerun with the meta-data command for a list of \\
valid arguments and their defaults.
!INFO
exit $OCF_SUCCESS;;
esac
case $1 in
start|stop|status|monitor|reload|promote|demote)
ocf_logi Debug "$RES: $1"
ocf_log Debug "$RES: $1"
cmd_out=$($cmd 2>&1)
drbd_$1 ;;
meta-data) meta_data;;
usage) usage; exit $OCF_SUCCESS;;
validate-all|notify) exit 0;;
*) usage
exit $OCF_ERR_ARGS
;;
esac
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