title: Zabbix監控PostgreSQL
tags: PostgreSQL,zabbix
author: Chinge Yang
date: 2017-03-06

Zabbix監控PostgreSQL

@(學習)[PostgreSQL,zabbix]

title: Zabbix監控PostgreSQLtags: PostgreSQL,zabbixauthor: Chinge Yangdate: 2017-03-06

因上次用到了PostgreSQL，而所使用的監控又是Zabbix，所以找到了此插件用於Zabbix監控PostgreSQL。

插件網站：PostgreSQL monitoring for Zabbix
Github地址：https://github.com/cavaliercoder/libzbxpgsql

環境：
CentOS6.8
Zabbix3.2.1
PostgreSQL9.5.6

1. 安裝libzbxpgsql

根據官方文檔進行安裝即可。
http://cavaliercoder.com/libzbxpgsql/documentation/module-installation/

rpm -ivh https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-6-x86_64/pgdg-centos95-9.5-3.noarch.rpm
yum -y install postgresql95-libs  # 已經安裝可忽略
yum -y install libconfig
wget http://cdn.cavaliercoder.com/libzbxpgsql/yum/zabbix32/rhel/6/x86_64/libzbxpgsql-1.1.0-1.el6.x86_64.rpm

[root@im109 packages]# find / -name libzbxpgsql.so
[root@im109 packages]# rpm -ivh --force libzbxpgsql-1.1.0-1.el6.x86_64.rpm 
error: Failed dependencies:
        libconfig.so.8()(64bit) is needed by libzbxpgsql-1.1.0-1.x86_64
        zabbix-agent >= 3.0.0 is needed by libzbxpgsql-1.1.0-1.x86_64
[root@im109 packages]# rpm -ivh --force libzbxpgsql-1.1.0-1.el6.x86_64.rpm --nodeps
Preparing...                ########################################### [100%]
   1:libzbxpgsql            ########################################### [100%]
[root@im109 packages]# find / -name libzbxpgsql.so                         
/usr/lib64/zabbix/modules/libzbxpgsql.so
[root@im109 packages]# ln -s /usr/lib64/zabbix/modules/libzbxpgsql.so /usr/local/zabbix/lib/

2. 配置zabbix配置文件zabbix_agentd.conf

[root@im109 log]# /usr/local/zabbix/sbin/zabbix_agentd -t pg.modver
zabbix_agentd [21910]: starting agent module libzbxpgsql 1.1.0
zabbix_agentd [21910]: using module configuration file: /etc/zabbix/libzbxpgsql.conf
pg.modver                                     [s|libzbxpgsql 1.1.0, compiled for Zabbix 3.2.3]
[root@im109 log]# /etc/init.d/zabbix-agentd restart
Shutting down Zabbix agent:                                [  OK  ]
Starting Zabbix agent:                                     [  OK  ]

3. 創建監控用戶

創建一個用戶，開放你所要監控的數據庫只讀權限給它，為了安全，把權限做到最小化。
我用的pgpool-II。

psql -h 10.1.0.115 -U postgres -p9999         
Password for user postgres: 
psql (9.5.6)
Type "help" for help.

postgres=# CREATE ROLE monitoring WITH LOGIN NOSUPERUSER NOCREATEDB NOCREATEROLE;
CREATE ROLE
postgres=# GRANT CONNECT ON DATABASE wiseucmsg TO monitoring;        
GRANT
postgres=# alter user monitoring with password 'password';
ALTER ROLE

使用創建的用戶能登錄查看相應數據庫，則可進行下一步。

[root@im109 pgpool-II]# psql -h localhost -U monitoring -p 54321 wiseucmsg
psql (9.5.6)
Type "help" for help.

wiseucmsg=> \l
                                  List of databases
   Name    |  Owner   | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+----------+----------+-------------+-------------+-----------------------
 postgres  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | 
 template0 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
 template1 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
 wiseucmsg | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =Tc/postgres         +
           |          |          |             |             | postgres=CTc/postgres+
           |          |          |             |             | monitoring=c/postgres
(4 rows)

wiseucmsg=>