当一台服务器上MySQL有多个实例的时候,MySQL占用多个不同端口。利用zabbix的low-level discovery可以轻松监控。
思路参考:http://dl528888.blog.51cto.com/2382721/1357713
下面我写了一个简单的脚本,用于一键部署mysql监控。
一、客户端
在被监控端运行此脚本,前提条件已经安装好了zabbix agent(推荐yum安装)。脚本已在CentOS6.2 x86_64环境下测试通过。脚本在附件提供下载。
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
|
#!/bin/sh # # Filename: autoMonitorMysql.sh # Revision: 1.0 # Date: 2014/08/12 # Author: Qicheng # Email: # Website: http://qicheng0211.blog.51cto.com/ # Description: zabbix low level discovery监控MySQL # Notes: 在被监控客户端运行此脚本,前提条件已经安装好zabbix agent # ROOT_UID=0 if [ "$UID" - ne "$ROOT_UID" ]; then echo "Error: 必须以root用户运行此程序!" exit 1 fi # 自行修改为你的zabbix agent配置文件路径 AGENT_CONF= "/etc/zabbix/zabbix_agentd.conf" mkdir -p /etc/zabbix/monitor_scripts # 创建 mysql low-level discovery 脚本 cat > /etc/zabbix/monitor_scripts/mysql_port_discovery .sh << 'EOF' #!/bin/bash #Function: mysql low-level discovery #Script_name: mysql_port_discovery.sh mysql() { port=(` sudo /bin/netstat -tpln | awk -F "[ :]+" '/mysql/ && /0.0.0.0/ {print $5}' `) max_index=$[${ #port[@]}-1] printf '{
' printf ' "data":[' for key in ${!port[@]} do printf '
{' printf ""{#MYSQLPORT}":"${port[${key}]}"}" if [ $key - ne $max_index ]; then printf "," fi done printf '
]
' printf '}
' } case "$1" in mysql) "$1" ;; *) echo "Bad Parameter." echo "Usage: $0 mysql" exit 1 ;; esac EOF chown -R zabbix:zabbix /etc/zabbix/monitor_scripts chmod +x /etc/zabbix/monitor_scripts/mysql_port_discovery .sh # 判断配置文件是否存在 [ -f "${AGENT_CONF}" ] || { echo "ERROR: File ${AGENT_CONF} does not exist." ; exit 1;} include=` grep '^Include' ${AGENT_CONF} | cut -d '=' -f2` # 在配置文件中添加自定义参数 if [ -d "$include" ]; then cat > $include /mysql_lld .conf << 'EOF' UserParameter=mysql_port_discovery[*], /bin/bash /etc/zabbix/monitor_scripts/mysql_port_discovery .sh $1 UserParameter=mysql_status[*],mysql -h 127.0.0.1 -P $1 -uzabbix -pzabbix -N -e "show global status where Variable_name='$2'" 2> /dev/null | cut -f2 UserParameter=mysql_ping[*],mysqladmin -h 127.0.0.1 -P $1 -uzabbix -pzabbix ping 2> /dev/null | grep -c alive EOF else grep -q '^UserParameter=mysql_port_discovery' ${AGENT_CONF} || cat >> ${AGENT_CONF} << 'EOF' UserParameter=mysql_port_discovery[*], /bin/bash /etc/zabbix/monitor_scripts/mysql_port_discovery .sh $1 UserParameter=mysql_status[*],mysql -h 127.0.0.1 -P $1 -uzabbix -pzabbix -N -e "show global status where Variable_name='$2'" 2> /dev/null | cut -f2 UserParameter=mysql_ping[*],mysqladmin -h 127.0.0.1 -P $1 -uzabbix -pzabbix ping 2> /dev/null | grep -c alive EOF fi # 手动MySQL授权,添加zabbix账户 echo "请在所有MySQL实例中添加zabbix账户,执行> GRANT PROCESS ON *.* TO 'zabbix'@'127.0.0.1' identified BY 'zabbix';flush privileges;" # 重启agent服务 [ -f '/etc/init.d/zabbix-agent' ] && /etc/init .d /zabbix-agent restart || echo "需手动重启zabbix agent服务." # 授权zabbix用户无密码运行netstat命令 chmod +w /etc/sudoers sed -i 's/^(Defaultss+requiretty)/#1/' /etc/sudoers grep -q '^zabbix ALL=(ALL).*netstat' /etc/sudoers || echo 'zabbix ALL=(ALL) NOPASSWD: /bin/netstat' >> /etc/sudoers chmod 440 /etc/sudoers # 关闭SELinux setenforce 0 sed -i '/^SELINUX=/cSELINUX=disabled' /etc/sysconfig/selinux sed -i '/^SELINUX=/cSELINUX=disabled' /etc/selinux/config |
脚本执行完毕后,还需要手动MySQL授权,在所有实例中添加zabbix账户:
1
2
|
mysql> GRANT PROCESS ON *.* TO 'zabbix' @ '127.0.0.1' identified BY 'zabbix' ; mysql> flush privileges; |
在zabbix server端执行zabbix_get命令测试:
1
2
3
4
5
6
7
8
9
10
|
shell # zabbix_get -s 115.238.xxx.xxx -k 'mysql_port_discovery[mysql]' { "data" :[ { "{#MYSQLPORT}" : "3306" } ] } shell # zabbix_get -s 115.238.xxx.xxx -k 'mysql_status[3306,Uptime]' 1295092 shell # zabbix_get -s 115.238.xxx.xxx -k 'mysql_ping[3306]' 1 |
都能返回数据,说明客户端的MySQL监控部署好了。
二、WEB端
1、导入模板
下载附件模板文件(Template App MySQL used LLD.xml)后,导入到zabbix里。
2、创建主机并链接模板
3、数据展示
本文出自 “启程的Linux博客” 博客,请务必保留此出处http://qicheng0211.blog.51cto.com/3958621/1539101