我有一个带有 Apache、MySQL、ActiveMQ 和 DRBD 的主动-被动 Heartbeat 集群。
今天想在辅助节点（node04）上进行硬件维护，所以我在关闭之前停止了心跳服务。
然后，主节点（node03）收到了来自辅助节点（node04）的关闭通知。
此日志记录来自主节点：node03
heartbeat[4458]: 2010/03/08_08:52:56 info: Received shutdown notice from 'node04.companydomain.nl'.
heartbeat[4458]: 2010/03/08_08:52:56 info: Resources being acquired from node04.companydomain.nl.
harc[27522]: 2010/03/08_08:52:56 info: Running /etc/ha.d/rc.d/status status
heartbeat[27523]: 2010/03/08_08:52:56 info: Local Resource acquisition completed.
mach_down[27567]: 2010/03/08_08:52:56 info: /usr/share/heartbeat/mach_down: nice_failback: foreign resources acquired
mach_down[27567]: 2010/03/08_08:52:56 info: mach_down takeover complete for node node04.companydomain.nl.
heartbeat[4458]: 2010/03/08_08:52:56 info: mach_down takeover complete.
harc[27620]: 2010/03/08_08:52:56 info: Running /etc/ha.d/rc.d/ip-request-resp ip-request-resp
ip-request-resp[27620]: 2010/03/08_08:52:56 received ip-request-resp drbddisk OK yes
ResourceManager[27645]: 2010/03/08_08:52:56 info: Acquiring resource group: node03.companydomain.nl drbddisk Filesystem::/dev/drbd0::/data::ext3 mysql apache::/etc/httpd/conf/httpd.conf LVSSyncDaemonSwap::master monitor activemq tivoli-cluster MailTo::[email protected]::DRBDFailureAcc MailTo::[email protected]::DRBDFailureAcc 1.2.3.212
ResourceManager[27645]: 2010/03/08_08:52:56 info: Running /etc/ha.d/resource.d/drbddisk start
Filesystem[27700]: 2010/03/08_08:52:57 INFO: Running OK
ResourceManager[27645]: 2010/03/08_08:52:57 info: Running /etc/ha.d/resource.d/mysql start
mysql[27783]: 2010/03/08_08:52:57 Starting MySQL[ OK ]
apache[27853]: 2010/03/08_08:52:57 INFO: Running OK
ResourceManager[27645]: 2010/03/08_08:52:57 info: Running /etc/ha.d/resource.d/monitor start
monitor[28160]: 2010/03/08_08:52:58
ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/activemq start
activemq[28210]: 2010/03/08_08:52:58 Starting ActiveMQ Broker... ActiveMQ Broker is already running.
ResourceManager[27645]: 2010/03/08_08:52:58 ERROR: Return code 1 from /etc/ha.d/resource.d/activemq
ResourceManager[27645]: 2010/03/08_08:52:58 CRIT: Giving up resources due to failure of activemq
ResourceManager[27645]: 2010/03/08_08:52:58 info: Releasing resource group: node03.companydomain.nl drbddisk Filesystem::/dev/drbd0::/data::ext3 mysql apache::/etc/httpd/conf/httpd.conf LVSSyncDaemonSwap::master monitor activemq tivoli-cluster MailTo::[email protected]::DRBDFailureAcc MailTo::[email protected]::DRBDFailureAcc 1.2.3.212
ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/IPaddr 1.2.3.212 stop
IPaddr[28329]: 2010/03/08_08:52:58 INFO: ifconfig eth0:0 down
IPaddr[28312]: 2010/03/08_08:52:58 INFO: Success
ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/MailTo [email protected] DRBDFailureAcc stop
MailTo[28378]: 2010/03/08_08:52:58 INFO: Success
ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/MailTo [email protected] DRBDFailureAcc stop
MailTo[28433]: 2010/03/08_08:52:58 INFO: Success
ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/tivoli-cluster stop
ResourceManager[27645]: 2010/03/08_08:52:58 info: Running /etc/ha.d/resource.d/activemq stop
activemq[28503]: 2010/03/08_08:53:01 Stopping ActiveMQ Broker... Stopped ActiveMQ Broker.
ResourceManager[27645]: 2010/03/08_08:53:01 info: Running /etc/ha.d/resource.d/monitor stop
monitor[28681]: 2010/03/08_08:53:01
ResourceManager[27645]: 2010/03/08_08:53:01 info: Running /etc/ha.d/resource.d/LVSSyncDaemonSwap master stop
LVSSyncDaemonSwap[28714]: 2010/03/08_08:53:02 info: ipvs_syncmaster down
LVSSyncDaemonSwap[28714]: 2010/03/08_08:53:02 info: ipvs_syncbackup up
LVSSyncDaemonSwap[28714]: 2010/03/08_08:53:02 info: ipvs_syncmaster released
ResourceManager[27645]: 2010/03/08_08:53:02 info: Running /etc/ha.d/resource.d/apache /etc/httpd/conf/httpd.conf stop
apache[28782]: 2010/03/08_08:53:03 INFO: Killing apache PID 18390
apache[28782]: 2010/03/08_08:53:03 INFO: apache stopped.
apache[28771]: 2010/03/08_08:53:03 INFO: Success
ResourceManager[27645]: 2010/03/08_08:53:03 info: Running /etc/ha.d/resource.d/mysql stop
mysql[28851]: 2010/03/08_08:53:24 Shutting down MySQL.....................[ OK ]
ResourceManager[27645]: 2010/03/08_08:53:24 info: Running /etc/ha.d/resource.d/Filesystem /dev/drbd0 /data ext3 stop
Filesystem[29010]: 2010/03/08_08:53:25 INFO: Running stop for /dev/drbd0 on /data
Filesystem[29010]: 2010/03/08_08:53:25 INFO: Trying to unmount /data
Filesystem[29010]: 2010/03/08_08:53:25 ERROR: Couldn't unmount /data; trying cleanup with SIGTERM
Filesystem[29010]: 2010/03/08_08:53:25 INFO: Some processes on /data were signalled
Filesystem[29010]: 2010/03/08_08:53:27 INFO: unmounted /data successfully
Filesystem[28999]: 2010/03/08_08:53:27 INFO: Success
ResourceManager[27645]: 2010/03/08_08:53:27 info: Running /etc/ha.d/resource.d/drbddisk stop
heartbeat[4458]: 2010/03/08_08:53:29 WARN: node node04.companydomain.nl: is dead
heartbeat[4458]: 2010/03/08_08:53:29 info: Dead node node04.companydomain.nl gave up resources.
heartbeat[4458]: 2010/03/08_08:53:29 info: Link node04.companydomain.nl:eth0 dead.
heartbeat[4458]: 2010/03/08_08:53:29 info: Link node04.companydomain.nl:eth1 dead.
hb_standby[29193]: 2010/03/08_08:53:57 Going standby [foreign].
heartbeat[4458]: 2010/03/08_08:53:57 info: node03.companydomain.nl wants to go standby [foreign]
苏……这里发生了什么？？？
- node04 上的心跳停止并告诉 node03，它是当时的活动节点。
- 不知何故，node03 决定启动已经在运行的集群进程。（对于不重要的进程，我总是从启动脚本返回一个 0，因此当非必要部分失败时它不会停止整个集群。）
- 启动 ActiveMQ 时，它返回状态 1，因为它已经在运行。
- 这会使节点失败并关闭所有内容。由于心跳不在辅助节点上运行，它无法故障转移到那里。
当我尝试运行 ha_takeover 以重新启动资源时，绝对没有发生任何事情。
只有在我在主节点上重新启动心跳后，才能启动资源（延迟 2 分钟后）。
这些是我的问题：
- 为什么主节点上的心跳会再次尝试启动集群进程？
- 为什么 ha_takeover 不起作用？
- 我能做些什么来防止这种情况发生？
服务器配置：
DRBD：
version: 8.3.7 (api:88/proto:86-91)
GIT-hash: ea9e28dbff98e331a62bcbcc63a6135808fe2917 build by [email protected], 2010-01-20 09:14:48
0: cs:Connected ro:Secondary/Primary ds:UpToDate/UpToDate B r----
ns:0 nr:6459432 dw:6459432 dr:0 al:0 bm:301 lo:0 pe:0 ua:0 ap:0 ep:1 wo:d oos:0
unname -a
Linux node04 2.6.18-164.11.1.el5 #1 SMP Wed Jan 6 13:26:04 EST 2010 x86_64 x86_64 x86_64 GNU/Linux
资源
node03.companydomain.nl \
drbddisk \
Filesystem::/dev/drbd0::/data::ext3 \
mysql \
apache::/etc/httpd/conf/httpd.conf \
LVSSyncDaemonSwap::master \
monitor \
activemq \
tivoli-cluster \
MailTo::[email protected]::DRBDFailureAcc \
MailTo::[email protected]::DRBDFailureAcc \
1.2.3.212
ha.cf
debugfile /var/log/ha-debug
logfile /var/log/ha-log
keepalive 500ms
deadtime 30
warntime 10
initdead 120
udpport 694
mcast eth0 225.0.0.3 694 1 0
mcast eth1 225.0.0.4 694 1 0
auto_failback off
node node03.companydomain.nl
node node04.companydomain.nl
respawn hacluster /usr/lib64/heartbeat/dopd
apiauth dopd gid=haclient uid=hacluster
非常感谢您，
热阿珀尔多伦