实验环境
[root@agent ~]# cat /etc/redhat-release CentOS release 6.7 (Final) [root@agent ~]# sestatus SELinux status: disabled [root@agent ~]# /etc/init.d/iptables stop
ssh优化
GSSAPIAuthentication no
UseDNS no
本次实验一共准备了，三台机器
|
主机名 |
ip |
软件环境 |
|
zabbix-server01 |
192.168.56.29 |
httpd+php+keepalived+sshpass zabbix server+agent |
|
zabbix-server02 |
192.168.56.30 |
httpd+php+keepalived+sshpass zabbix server+agent |
|
agent |
192.168.56.99 |
zabbix agent+mysql |
VIP规划：192.168.56.66
本文中用到了sshpass免密钥交互，也可以做ssh相互免密钥登录
zabbix server的高可用，我试过在agent配置文件中，使用VIP，发现不能正常监控，于是才有本文。
我的做法agent中的配置文件，Server和ServerActive中分别都配置了两个ip，就是为了保证，zabbix-server01宕机了，还可以把监控数据发往zabbix-server02，由于两个zabbix-server共用一个数据库，肯定不能同时往数据库写数据，于是我想到了使用keepalived来控制zabbix server的开关，做到VIP在哪，那台机器的zabbix server就启动，另外一台关闭，而zabbix的web页面使用VIP去访问
本文把zabbix数据库独立出来，为了方便做mysql高可用集群
首先在zabbix-server01
rpm -ivh http://mirrors.aliyun.com/zabbix/zabbix/3.0/rhel/6/x86_64/zabbix-release-3.0-1.el6.noarch.rpm vim /etc/yum.repos.d/zabbix.repo 修改两处bashurl baseurl=http://mirrors.aliyun.com/zabbix/zabbix/3.0/rhel/6/x86_64/ baseurl=http://mirrors.aliyun.com/zabbix/non-supported/rhel/6/x86_64/
因为zabbix3.0需要php5.4以上，这里安装一个php的yum源
rpm -ivh http://mirror.webtatic.com/yum/el6/latest.rpm
安装httpd和php
yum install httpd -y yum install php55w php55w-mysql php55w-common php55w-gd php55w-mbstring php55w-mcrypt php55w-devel php55w-xml php55w-bcmath -y
安装zabbix
yum install -y zabbix-agent.x86_64 zabbix-get.x86_64 zabbix-server-mysql.x86_64 zabbix-web.noarch zabbix-web-mysql.noarch cp -R /usr/share/zabbix/ /var/www/html/ sed -i 's#^post_max_size = 8M#post_max_size = 16M#g' /etc/php.ini sed -i 's#^max_execution_time = 30#max_execution_time = 300#g' /etc/php.ini sed -i 's#^max_input_time = 60#max_input_time = 300#g' /etc/php.ini sed -i '883a date.timezone = Asia/shanghai' /etc/php.ini sed -i '276a ServerName 127.0.0.1:80' /etc/httpd/conf/httpd.conf scp /usr/share/doc/zabbix-server-mysql-3.0.5/create.sql.gz root@192.168.56.99:/opt
在agent上
yum install -y zabbix-agent.x86_64 yum install -y mysql-server mysql-devel mysql /etc/init.d/mysqld start mysql -e "create database zabbix character set utf8 collate utf8_bin;" mysql -e "show databases;" mysql -e "grant all on zabbix.* to zabbix@'192.168.56.%' identified by '123456';" mysql -e "select user,host from mysql.user" zcat /opt/create.sql.gz |mysql -uzabbix -p123456 zabbix
在zabbix-server01上
sed -i '81a DBHost=192.168.56.99' /etc/zabbix/zabbix_server.conf sed -i '116a DBPassword=123456' /etc/zabbix/zabbix_server.conf /etc/init.d/httpd start /etc/init.d/zabbix-server start /etc/init.d/zabbix-agent start
打开浏览器进行安装
安装完成后
scp /etc/zabbix/web/zabbix.conf.php root@192.168.56.30:/opt
在zabbix-server02
rpm -ivh http://mirrors.aliyun.com/zabbix/zabbix/3.0/rhel/6/x86_64/zabbix-release-3.0-1.el6.noarch.rpm
修改两处bashurl
vim /etc/yum.repos.d/zabbix.repo baseurl=http://mirrors.aliyun.com/zabbix/zabbix/3.0/rhel/6/x86_64/ baseurl=http://mirrors.aliyun.com/zabbix/non-supported/rhel/6/x86_64/
安装httpd和php
rpm -ivh http://mirror.webtatic.com/yum/el6/latest.rpm yum install httpd -y yum install php55w php55w-mysql php55w-common php55w-gd php55w-mbstring php55w-mcrypt php55w-devel php55w-xml php55w-bcmath -y
安装zabbix
yum install -y zabbix-agent.x86_64 zabbix-get.x86_64 zabbix-server-mysql.x86_64 zabbix-web.noarch zabbix-web-mysql.noarch cp -R /usr/share/zabbix/ /var/www/html/ sed -i 's#^post_max_size = 8M#post_max_size = 16M#g' /etc/php.ini sed -i 's#^max_execution_time = 30#max_execution_time = 300#g' /etc/php.ini sed -i 's#^max_input_time = 60#max_input_time = 300#g' /etc/php.ini sed -i '883a date.timezone = Asia/shanghai' /etc/php.ini sed -i '276a ServerName 127.0.0.1:80' /etc/httpd/conf/httpd.conf sed -i '81a DBHost=192.168.56.99' /etc/zabbix/zabbix_server.conf sed -i '116a DBPassword=123456' /etc/zabbix/zabbix_server.conf mv /opt/zabbix.conf.php /etc/zabbix/web/ /etc/init.d/httpd start
注意：一个主机上有两个IP，限制我从那个IP地址出去取值
修改如下三处：
vi /etc/zabbix/zabbix_agentd.conf Server=192.168.56.30,192.168.56.29 ServerActive=192.168.56.30,192.168.56.29 Hostname=192.168.56.99
修改完成如下
/etc/init.d/zabbix-agent start
在zabbix-server01和zabbix-server02上分别安装keepalived的
zabbix-server01
配置文件如下
cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived global_defs { router_id LVS_DEVEL 29 } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.66 } notify_master /opt/to_master.sh } cat /opt/to_master.sh #!/bin/bash sshpass -p 123456 ssh -o StrictHostKeyChecking=no root@192.168.56.30 "/etc/init.d/zabbix-server stop" /etc/init.d/zabbix-server start zabbix-server02 配置文件如下 cat /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { router_id LVS_DEVEL 30 } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 51 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.56.66 } notify_master /opt/to_master.sh } [root@zabbix3 zabbix]# cat /opt/to_master.sh #!/bin/bash sshpass -p 123456 ssh -o StrictHostKeyChecking=no root@192.168.56.29 "/etc/init.d/zabbix-server stop" /etc/init.d/zabbix-server start
下面是测试
两台zabbix server都启动keepalived的
zabbix-server01 启动zabbix server
zabbix-server02不启动zabbix server
zabbix-server01状态如下
zabbix-server02状态如下
模拟zabbix-server01宕机，keepalived不工作了
再测试飘回来
查看数据历史间隔，发现会丢失个别监控项的一次监控数据
由于两台zabbix-server只会同时开启一台，所有agent的日志如下
