HGDB5.6.5集群备机手动switchover提示data目录无效

环境

系统平台：Linux x86-64 Red Hat Enterprise Linux 7
版本：5.6.5

症状

企业版5.6.5集群在备机中手动执行switchover提示

ERROR: “data_directory” parameter in repmgr.conf on “x.x.197.128” is incorrectly configured

HINT: execute “repmgr node check --data-directory-config” on “x.x.197.128” to diagnose the issue

在主库服务器上执行repmgr node check --data-directory-config，执行成功并返回正确的data目录，

检查hg_repmgr.conf文件中data_directory配置正确。

问题原因

环境变量配置在了bash_profile文件中，由于bash_profile是在用户登录后才会运行,repmgr访问其他服务器时不会去登录用户,即不刷新bash_profile，故找不到data目录。

解决方案

1.在highgo用户下配置bashrc文件，添加以下内容：

export PATH=/opt/HighGo5.6.5-cluster/bin:$PATH
export HG_BASE=/opt/HighGo5.6.5-cluster
export PGHOME=/opt/HighGo5.6.5-cluster
export HGDB_HOME=/opt/HighGo5.6.5-cluster
export PGDATA=/opt/HighGo5.6.5-cluster/data
export LD_LIBRARY_PATH=/opt/HighGo5.6.5-cluster/lib:$LD_LIBRARY_PATH

2. source bashrc文件，使其生效

source ~/.bashrc
3.备库服务器上执行swichover

[highgo@hgdb-fsg data]$ repmgr  standby   switchover
NOTICE: executing switchover on node "x.x.197.132" (ID: 1)
NOTICE: local node "x.x.197.132" (ID: 1) will be promoted to primary; current primary "x.x.197.128" (ID: 2) will be demoted to standby
NOTICE: stopping current primary node "x.x.197.128" (ID: 2)
NOTICE: issuing CHECKPOINT
DETAIL: executing server command "/opt/HighGo5.6.5-cluster/bin/pg_ctl  -D '/opt/HighGo5.6.5-cluster/data' -W -m fast stop"
INFO: checking for primary shutdown; 1 of 60 attempts ("shutdown_check_timeout")
INFO: checking for primary shutdown; 2 of 60 attempts ("shutdown_check_timeout")
NOTICE: current primary has been cleanly shut down at location 0/6000028
NOTICE: promoting standby to primary
DETAIL: promoting server "x.x.197.132" (ID: 1) using "/opt/HighGo5.6.5-cluster/bin/pg_ctl  -w -D '/opt/HighGo5.6.5-cluster/data' promote"
waiting for server to promote.... 完成
server promoted
NOTICE: waiting up to 60 seconds (parameter "promote_check_timeout") for promotion to complete
NOTICE: STANDBY PROMOTE successful
DETAIL: server "x.x.197.132" (ID: 1) was successfully promoted to primary
INFO: local node 2 can attach to rejoin target node 1
DETAIL: local node's recovery point: 0/6000028; rejoin target node's fork point: 0/6000098
NOTICE: setting node 2's upstream to node 1
WARNING: unable to ping "host=x.x.197.128 user=hgrepmgr dbname=hgrepmgr password=highgo  connect_timeout=2"
DETAIL: PQping() returned "PQPING_NO_RESPONSE"
NOTICE: starting server using "/opt/HighGo5.6.5-cluster/bin/pg_ctl  -w -D '/opt/HighGo5.6.5-cluster/data' start"
NOTICE: NODE REJOIN successful
DETAIL: node 2 is now attached to node 1
NOTICE: switchover was successful
DETAIL: node "x.x.197.132" is now primary and node "x.x.197.128" is attached as standby
NOTICE: STANDBY SWITCHOVER has completed successfully

切换成功

4.查看集群状态：

[highgo@hgdb-fsg data]$ repmgr  cluster showID | Name            | Role    | Status    | Upstream        | Location | Priority | Replication lag | Last replayed LSN
----+-----------------+---------+-----------+-----------------+----------+----------+-----------------+-------------------1  | x.x.197.132 | primary | * running |                 | default  | 100      | n/a             | none2  | x.x.197.128 | standby |   running | x.x.197.132 | default  | 100      | 0 bytes         | 0/6047328

问题解决