node $id="10" db10 \
attributes standby="off"
node $id="9" db09 \
attributes standby="off"
primitive drbd_jenkins ocf:linbit:drbd \
params drbd_resource="r0" \
op start interval="0s" timeout="60s" \
op stop interval="0s" timeout="60s"
primitive jenkins lsb:jenkins \
op monitor interval="15s" \
op start interval="0s" timeout="90s"
primitive mount_jenkins ocf:heartbeat:Filesystem \
params device="/dev/drbd0" directory="/var/lib/jenkins/" fstype="ext4" \
op start timeout="20s" interval="0" \
op stop timeout="20s" interval="0"
primitive vip-158 ocf:heartbeat:IPaddr2 \
params ip="x.x.x.158" nic="eth0" cidr_netmask="28" \
op start interval="0s" timeout="60s" \
op monitor interval="5s" timeout="20s" \
op stop interval="0s" timeout="60s" \
meta target-role="Started"
group jenkins_group jenkins vip-158 mount_jenkins
ms ms_drbd_jenkins drbd_jenkins \
meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true" globally-unique="false" target-role="Master"
colocation drbd_mount inf: ms_drbd_jenkins:Master jenkins_group
order mount_after_drbd inf: ms_drbd_jenkins:promote jenkins_group:start
property $id="cib-bootstrap-options" \
dc-version="1.1.10-42f2063" \
cluster-infrastructure="corosync" \
stonith-enabled="false" \
last-lrm-refresh="1489005751"
rsc_defaults $id="rsc-options" \
resource-stickiness="0"
当起搏器启动时，一切都很好：
root@db09:~# crm status
Last updated: Wed Mar 8 21:20:33 2017
Last change: Wed Mar 8 21:15:15 2017 via crm_resource on db10
Stack: corosync
Current DC: db10 (10) - partition with quorum
Version: 1.1.10-42f2063
2 Nodes configured
5 Resources configured
Online: [ db09 db10 ]
Master/Slave Set: ms_drbd_jenkins [drbd_jenkins]
Masters: [ db09 ]
Slaves: [ db10 ]
Resource Group: jenkins_group
jenkins (lsb:jenkins): Started db09
vip-158 (ocf::heartbeat:IPaddr2): Started db09
mount_jenkins (ocf::heartbeat:Filesystem): Started db09
但我无法将 master 移动到 db10，无论是：
crm_resource --resource ms_drbd_jenkins --move --node db10
或者
crm resource migrate ms_drbd_jenkins db10
最糟糕的是，如果我将 db09 节点设置为备用，两者都会成为从属：
root@db09:~# crm node standby db09
root@db09:~# crm status
Last updated: Wed Mar 8 21:27:26 2017
Last change: Wed Mar 8 21:27:24 2017 via crm_attribute on db09
Stack: corosync
Current DC: db10 (10) - partition with quorum
Version: 1.1.10-42f2063
2 Nodes configured
5 Resources configured
Node db09 (9): standby
Online: [ db10 ]
Master/Slave Set: ms_drbd_jenkins [drbd_jenkins]
Slaves: [ db09 db10 ]
如果 db10 进入待机状态，它将停止，这是预期的：
root@db09:~# crm node standby db10
root@db09:~# crm status
Last updated: Wed Mar 8 21:28:45 2017
Last change: Wed Mar 8 21:28:44 2017 via crm_attribute on db09
Stack: corosync
Current DC: db10 (10) - partition with quorum
Version: 1.1.10-42f2063
2 Nodes configured
5 Resources configured
Node db10 (10): standby
Online: [ db09 ]
Master/Slave Set: ms_drbd_jenkins [drbd_jenkins]
Masters: [ db09 ]
Stopped: [ db10 ]
Resource Group: jenkins_group
jenkins (lsb:jenkins): Started db09
vip-158 (ocf::heartbeat:IPaddr2): Started db09
mount_jenkins (ocf::heartbeat:Filesystem): Started db09
我在这里做错了什么？
答案1
您的主机托管限制不正确。您告诉集群 DRBD 必须是启动 jenkins_group 的 Master。
请改用以下约束：
colocation cl_jenkins-with-drbd inf: jenkins_group ms_drbd_jenkins:Master
order o_drbd-before-jenkins inf: ms_drbd_jenkins:promote jenkins_group:start
专业提示：请注意约束名称中的“语言”：cl____-with-____, o____-before-____。这与评分后面的资源名称相匹配inf:。如果您遵循约束名称中的with和before命名约定，它们将变得更易于阅读/管理/故障排除。