Ansible是一种简单的自动化语言，可以完美地描述IT应用程序基础结构。它易于学习，自我记录，并且不需要毕业级的计算机科学学位来阅读。自动化不应该比它正在取代的任务更复杂。
今天给大家介绍一个ansible-playbook基于role的配置一键安装zabbix客户端以及拉取自定义监控脚本；
先看看role的目录结构：
[root@Dac_Auto playbooks]# tree roles/zabbix/
roles/zabbix/
├── files
│ ├── check_Mysql_custom.py
│ └── zabbix
├── handlers
│ └── main.yml
├── tasks
│ └── main.yml
└── templates
├── check_zombie.conf
├── FPM_parameter.conf
├── Mysql_Custom.conf
├── Mysql_repl.conf
├── Supervisor_parameter.conf
└── userparameter_mysql.conf
在files目录下存放需要拉取的文件，我们这里放了一个python文件与zabbix客户端的启动脚本（因为之前遇到一个版本问题所以写了一个基于centos7和6通用的脚本）
[root@Dac_Auto files]# ls
check_Mysql_custom.py zabbix
[root@Dac_Auto files]# cat check_Mysql_custom.py
#!/usr/local/bin/python
'''author = chenmingle'''
'''Description:get mysql status'''
import os
import sys
try:
import MySQLdb as mysql
except Exception, e:
print e
print "pip install MySQL-python"
sys.exit(1)
con = mysql.connect(user='root',passwd='',)
def processlist():
cur = con.cursor()
sql1 = 'show processlist'
a = str(cur.execute(sql1))
print a
def slave_status():
cur = con.cursor()
sql2 = cur.execute('show status like "%Slave_running%";')
status2 = str(cur.fetchall())
check2 = status2.split("'")[3]
if check2 == 'ON':
print 0
else:
print 1
def show_status(type):
cur = con.cursor()
b = cur.execute('show status like "%s";' %(type))
for i in cur.fetchall():
cat = str(i)
check = str(cat.split("'")[3])
print check
def main(type):
if type == 'processlist':
processlist()
elif type == 'slave_status':
slave_status()
else:
show_status(type)
if __name__ == '__main__':
try:
type = sys.argv[1]
except Exception, e:
print "Usage: python %s type" % sys.argv[0]
sys.exit(1)
main(type)[root@Dac_Auto files]# cat zabbix
#!/bin/sh
#chkconfig: 2345 20 80
check_release=`cat /etc/redhat-release | awk '{print $NF}'`
start(){
if [ $check_release == "(Core)" ]; then
echo "start zabbix-agent"
systemctl start zabbix-agent
touch /tmp/zabbix-agent.pid
else
echo "start zabbix-agent"
/etc/init.d/zabbix-agent start
touch /tmp/zabbix-agent.pid
fi
}
stop(){
if [ $check_release == "(Core)" ]; then
echo "stopping zabbix-agent"
systemctl stop zabbix-agent
ps -ef | grep zabbix_agentd | grep -v grep | awk '{print $2}' | xargs kill -9 1 >/dev/null 2>&1
touch /tmp/zabbix-agent.pid
else
echo "stopping zabbix-agent"
/etc/init.d/zabbix-agent stop
touch /tmp/zabbix-agent.pid
fi
if [ $? == 0 ]; then
rm -rf /tmp/zabbix-agent.pid
echo "success stop zabbix-agent"
else
echo "check your zabbix-agent command"
exit 10
fi
}
status(){
if [ $check_release == "(Core)" ]; then
systemctl status zabbix-agent
else
/etc/init.d/zabbix-agent status
fi
}
case $1 in
start)
start
;;
stop)
stop
;;
reload|restart)
start
stop
start
;;
status)
status
;;
*)
echo "Usage:$0{start|stop|reload/restart}"
;;
esac接下来介绍templates目录我们这里放的是自定义监控配置文件：
[root@Dac_Auto zabbix]# cd templates/ [root@Dac_Auto templates]# ls FPM_parameter.conf Mysql_Custom.conf [root@Dac_Auto templates]# cat Mysql_Custom.conf UserParameter=mysql.Custom[*],/usr/local/bin/python /home/python/check_Mysql_custom.py $1
然后在handlers目录下写一个触发的重启项：
[root@Dac_Auto zabbix]# cd handlers/ [root@Dac_Auto handlers]# ls main.yml [root@Dac_Auto handlers]# cat main.yml - name: restart zabbix-agent service: name: zabbix-agent state: restarted - name: restart zabbix service: name: zabbix state: restarted
最后在tasks目录下编写安装步骤：
[root@Dac_Auto zabbix]# cd tasks/
[root@Dac_Auto tasks]# cat main.yml
- name: install pip for centos7
yum:
name: "{{ item }}"
state: present
with_items:
- python2-pip
when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "7"
- name: install pip for centos6
yum:
name: "{{ item }}"
state: present
with_items:
- python-pip
when: ansible_distribution == "CentOS" and ansible_distribution_major_version == "6"
- name: Install mysql Packages
yum:
name: "{{ item }}"
state: present
with_items:
- gcc
- python-devel
- pip:
name: MySQL-python
- name: Set Zabbix-agent /etc/init.d/zabbix
copy:
src: zabbix
dest: /etc/init.d/zabbix
mode: 0755
notify: restart zabbix
- name: Set templates
template:
src: "{{ project_name }}.conf"
dest: /etc/zabbix/zabbix_agentd.d/{{ project_name }}.conf
notify: restart zabbix
- name: Copy check_Mysql_custom.py to /home/python/check_Mysql_custom.py
copy:
src: check_Mysql_custom.py
dest: /home/python/check_Mysql_custom.py
mode: 0755解析一下：
1、when的那句作用是检测主机的操作系统版本来决定执行步骤
2、template配置的{{ project_name }}的作用是基于不同的监控项目我就可以在执行是定义想要的监控项
最后在role同级目录下编写一个yml脚本
[root@Dac_Auto playbooks]# pwd
/home/python/playbooks
[root@Dac_Auto playbooks]# cat zabbix_templates.yml
- hosts: testserver
roles:
- { role: zabbix, project_name: 'Mysql_Custom' }ansible-playbook基于role的配置一键安装zabbix客户端以及拉取自定义监控脚本
原文地址：http://blog.51cto.com/legehappy/2113988
