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cuongnv23
Asked: 2015-11-29 05:22:10 +0800 CST

无法使用 Corosync/Pacemaker 启动 PostgreSQL 复制资源

  • 772

我正在使用 Corosync/Pacemaker 的 HA 在两台服务器（CentOS 6.5）上设置 PostgreSQL 复制。

我的软件信息：

postgresql91-9.1.19-1PGDG.rhel6.x86_64
postgresql91-server-9.1.19-1PGDG.rhel6.x86_64
postgresql91-libs-9.1.19-1PGDG.rhel6.x86_64
postgresql91-contrib-9.1.19-1PGDG.rhel6.x86_64
postgresql91-devel-9.1.19-1PGDG.rhel6.x86_64


corosynclib-1.4.7-2.el6.x86_64
corosync-1.4.7-2.el6.x86_64

pacemaker-cli-1.1.12-8.el6_7.2.x86_64
pacemaker-1.1.12-8.el6_7.2.x86_64
pacemaker-cluster-libs-1.1.12-8.el6_7.2.x86_64
pacemaker-libs-1.1.12-8.el6_7.2.x86_64

resource-agents-3.9.5-24.el6_7.1.x86_64

复制正在工作，从主服务器我可以看到从服务器连接：

-bash-4.1$ psql -c "select client_addr,sync_state from pg_stat_replication;" client_addr | sync_state -------------+------------ 172.16.1.10 | async (1 row)

而且我还确认在主服务器上创建的数据被复制到从服务器。

这是我的crm configure show：

node master                                                                  
node slave

primitive PSQL pgsql \
    params restart_on_promote=true pgctl="/usr/pgsql-9.1/bin/pg_ctl" psql="/usr/pgsql-9.1/bin/psql" pgdata="/var/lib/pgsql/9.1/data" node_list="master slave" repuser=rep rep_mode=sync restore_command="cp /var/lib/pgsql/pg_archive/%f %p" primary_conninfo_opt="keepalives_idle=60 keepalives_interval=5 keepalives_count=5" master_ip=172.16.1.100 archive_cleanup_command="/usr/pgsql-9.1/bin/pg_archivecleanup /var/lib/pgsql/pg_archive/ %r"
primitive RepIP IPaddr2 \
    params ip=172.16.1.100 nic=eth2 cidr_netmask=24 \
    op monitor interval=30s
primitive VirtualIP IPaddr2 \
    params ip=10.0.0.100 cidr_netmask=24 \
    op monitor interval=30s
group psql-ha VirtualIP RepIP \
    meta target-role=Started
property cib-bootstrap-options: \
    dc-version=1.1.11-97629de \
    cluster-infrastructure="classic openais (with plugin)" \
    expected-quorum-votes=2 \
    stonith-enabled=false \
    no-quorum-policy=ignore

但资源PSQL无法启动。我的crm status：

Last updated: Sat Nov 28 13:09:47 2015
Last change: Sat Nov 28 12:50:21 2015
Stack: classic openais (with plugin)
Current DC: master - partition with quorum
Version: 1.1.11-97629de
2 Nodes configured, 2 expected votes
3 Resources configured


Online: [ master slave ]

 Resource Group: psql-ha
     VirtualIP  (ocf::heartbeat:IPaddr2):   Started master 
     RepIP  (ocf::heartbeat:IPaddr2):   Started master 

Failed actions:
    PSQL_start_0 on slave 'not configured' (6): call=60, status=complete, last-rc-change='Sat Nov 28 12:50:21 2015', queued=0ms, exec=53ms

登录时出现错误/var/log/messages：

11 月 28 日 12:50:21 从属 pgsql（PSQL）[3387]：错误：复制（rep_mode=async 或 sync）需要主/从配置。

谁能为我解释为什么我会收到这个错误？

谢谢。

更新：

（主机名称更改为 node1/node2）

通过@gf_ 的配置解决了问题。

注意：忘记我的旧配置，我在这个部署模型中只使用一个虚拟 IP。

当前状态：

[root@node1 ~]# crm_mon -Af -1
Last updated: Wed Dec  2 05:13:56 2015
Last change: Wed Dec  2 05:10:06 2015
Stack: classic openais (with plugin)
Current DC: node2 - partition with quorum
Version: 1.1.11-97629de
2 Nodes configured, 2 expected votes
3 Resources configured


Online: [ node1 node2 ]

 VirtualIP  (ocf::heartbeat:IPaddr2):   Started node2 
 Master/Slave Set: msPSQL [PSQL]
     Masters: [ node2 ]
     Slaves: [ node1 ]

Node Attributes:
* Node node1:
    + PSQL-data-status                  : STREAMING|SYNC
    + PSQL-status                       : HS:sync   
    + master-PSQL                       : 100       
* Node node2:
    + PSQL-data-status                  : LATEST    
    + PSQL-master-baseline              : 000000000E000078
    + PSQL-status                       : PRI       
    + master-PSQL                       : 1000      

Migration summary:
* Node node1: 
* Node node2:

工作配置：

node node1 \
    attributes PSQL-data-status="STREAMING|SYNC"
node node2 \
    attributes PSQL-data-status=LATEST
primitive PSQL pgsql \
    params restart_on_promote=false pgctl="/usr/pgsql-9.1/bin/pg_ctl" psql="/usr/pgsql-9.1/bin/psql" pgdata="/var/lib/pgsql/9.1/data" node_list="node1 node2" repuser=replicate rep_mode=sync restore_command="cp /var/lib/pgsql/pg_archive/%f %p" primary_conninfo_opt="keepalives_idle=60 keepalives_interval=5 keepalives_count=5" master_ip=10.0.0.100 archive_cleanup_command="/usr/pgsql-9.1/bin/pg_archivecleanup /var/lib/pgsql/pg_archive/ %r" \
    op start timeout=60s interval=0s on-fail=restart \
    op monitor timeout=60s interval=4s on-fail=restart \
    op monitor timeout=60s interval=3s on-fail=restart role=Master \
    op promote timeout=60s interval=0s on-fail=restart \
    op demote timeout=60s interval=0s on-fail=stop \
    op stop timeout=60s interval=0s on-fail=block \
    op notify timeout=60s interval=0s
primitive VirtualIP IPaddr2 \
    params ip=10.0.0.100 nic=eth1 cidr_netmask=24 \
    op monitor interval=30s
ms msPSQL PSQL \
    meta master-max=1 master-node-max=1 clone-max=2 clone-node-max=1 target-role=Started notify=true
colocation rsc_colocation-1 inf: VirtualIP msPSQL:Master
order rsc_order-1 0: msPSQL:promote VirtualIP:start symmetrical=false
order rsc_order-2 0: msPSQL:promote VirtualIP:stop symmetrical=false
property cib-bootstrap-options: \
    dc-version=1.1.11-97629de \
    cluster-infrastructure="classic openais (with plugin)" \
    expected-quorum-votes=2 \
    no-quorum-policy=ignore \
    stonith-enabled=false \
    last-lrm-refresh=1449033003
rsc_defaults rsc-options: \
    resource-stickiness=100
postgresql

1 个回答

  1. Best Answer

    • 同时，PSQL应该在您的两个节点上运行，master并且slave. （只是一个小提示：不确定这些术语是否适合在您的设置中选择作为节点名称。）

    • 因此，您必须在配置中反映这一点，您遇到的错误非常清楚，并描述了缺少的内容：您必须将您配置PSQL为克隆（应该同时在多个节点上运行），多-state（应该在主从设置中运行）资源。如果您不知道这是关于什么的，那么现在是查看文档的好时机，尤其是对于Clones - Resources That Get Active on Multiple Hosts和Multi-state-Resources That Have Multiple Modes。

    • 因此，您的扩展配置可能如下所示：

      ms msPSQL PSQL \
meta master-max="1" master-node-max="1" clone-max="2" clone-node-max="1" notify="true"

    • 此外，您必须指定您应该在哪些节点上运行VirtualIP，并且您必须确保资源以正确的顺序停止/启动：RepIP 

      colocation rsc_colocation-1 inf: psql-ha msPSQL:Master
order rsc_order-1 0: msPSQL:promote psql-ha:start symmetrical=false
order rsc_order-2 0: msPSQL:demote psql-ha:stop symmetrical=false
    • 2

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