zabbix高可用架构(三十二)

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jiangxl 发表于 2022/04/13 23:44:28 2022/04/13
【摘要】 zabbix高可用 1.zabbix高可用方案 高可用最常用的方案就是服务+keepalived,但是zabbix-server不能再两台机器上同时启动,因为配置了高可用后,我们对外提供的访问地址一定...

zabbix高可用

1.zabbix高可用方案

高可用最常用的方案就是服务+keepalived,但是zabbix-server不能再两台机器上同时启动,因为配置了高可用后,我们对外提供的访问地址一定是keepalive的vip地址,vip只会把请求转发到master节点,但是slave节点上的zabbix-server会因为长期收不到监控信息,从而乱报警

因此我们最终的思路就是写一个脚本,分布运行在master和slave上,谁是master谁就启动zabbix-server,否则就关闭zabbix-server

2.环境规划

ip地址 主机名 服务
192.168.81.210 zabbix-server zabbix-server+keepalive+agent+mysql
192.168.81.70 zabbix-server zabbix-server+keepalive+agent
192.168.81.245 zabbix-agent zabbix-agent

3.部署zabbix-server

3.1.zabbix-server配置

1.获取zabbix4.0镜像源
[root@zabbix-server ~]# wget http://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm


2.安装镜像源
[root@zabbix-server ~]# rpm -ivh zabbix-release-4.0-1.el7.noarch.rpm 
安装完成后/etc/yum.repos.d/会多出来镜像文件
[root@zabbix-server ~]# ls /etc/yum.repos.d/
zabbix.repo

3.修改镜像文件base地址为清华园
[root@zabbix-server ~]# vim /etc/yum.repos.d/zabbix.repo 
[zabbix]
name=Zabbix Official Repository - $basearch
baseurl=http://mirror.tuna.tsinghua.edu.cn/zabbix/zabbix/4.0/rhel/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX-A14FE591

[zabbix-non-supported]
name=Zabbix Official Repository non-supported - $basearch
baseurl=http://mirror.tuna.tsinghua.edu.cn/zabbix/non-supported/rhel/7/$basearch/
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX
gpgcheck=1

4.开启yum缓存方便以后复用
[root@zabbix-server ~]# vim /etc/yum.conf 
keepcache=1

5.安装zabbix4.0软件
[root@zabbix-server ~]# yum -y install zabbix-server-mysql zabbix-web-mysql --downloaddir=/root 

6.修改zabbix server配置文件
[root@zabbix-server ~]# vim /etc/zabbix/zabbix_server.conf 
DBHost=192.168.81.210
DBName=zabbix
DBUser=zabbix
DBPassword=123456

7.启动zabbix-server
[root@zabbix-server ~]# systemctl start zabbix-server.service 
[root@zabbix-server ~]# systemctl enable zabbix-server.service 

8.设置时区
[root@zabbix-server ~]# vim /etc/httpd/conf.d/zabbix.conf 
	<IfModule mod_php5.c>
        php_value max_execution_time 300
        php_value memory_limit 128M
        php_value post_max_size 16M
        php_value upload_max_filesize 2M
        php_value max_input_time 300
        php_value max_input_vars 10000
        php_value always_populate_raw_post_data -1
        php_value date.timezone Asia/Shanghai
    </IfModule>

2.重启httpd
[root@zabbix-server ~]# systemctl start httpd 
[root@zabbix-server ~]# systemctl enable httpd

3.2.zabbix-server2配置

1.获取zabbix4.0镜像源
[root@zabbix-server2 ~]# wget http://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm


2.安装镜像源
[root@zabbix-server2 ~]# rpm -ivh zabbix-release-4.0-1.el7.noarch.rpm 
安装完成后/etc/yum.repos.d/会多出来镜像文件
[root@zabbix-server2 ~]# ls /etc/yum.repos.d/
zabbix.repo

3.修改镜像文件base地址为清华园
[root@zabbix-server2 ~]# vim /etc/yum.repos.d/zabbix.repo 
[zabbix]
name=Zabbix Official Repository - $basearch
baseurl=http://mirror.tuna.tsinghua.edu.cn/zabbix/zabbix/4.0/rhel/7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX-A14FE591

[zabbix-non-supported]
name=Zabbix Official Repository non-supported - $basearch
baseurl=http://mirror.tuna.tsinghua.edu.cn/zabbix/non-supported/rhel/7/$basearch/
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-ZABBIX
gpgcheck=1

4.开启yum缓存方便以后复用
[root@zabbix-server2 ~]# vim /etc/yum.conf 
keepcache=1

5.安装zabbix4.0软件
[root@zabbix-server2 ~]# yum -y install zabbix-server-mysql zabbix-web-mysql --downloaddir=/root 

6.修改zabbix server配置文件
[root@zabbix-server2 ~]# vim /etc/zabbix/zabbix_server.conf 
DBHost=192.168.81.210
DBName=zabbix
DBUser=zabbix
DBPassword=123456

7.启动zabbix-server
[root@zabbix-server2 ~]# systemctl start zabbix-server.service 
[root@zabbix-server2 ~]# systemctl enable zabbix-server.service 

8.设置时区
[root@zabbix-server2 ~]# vim /etc/httpd/conf.d/zabbix.conf 
	<IfModule mod_php5.c>
        php_value max_execution_time 300
        php_value memory_limit 128M
        php_value post_max_size 16M
        php_value upload_max_filesize 2M
        php_value max_input_time 300
        php_value max_input_vars 10000
        php_value always_populate_raw_post_data -1
        php_value date.timezone Asia/Shanghai
    </IfModule>

9.重启httpd
[root@zabbix-server2 ~]# systemctl start httpd 
[root@zabbix-server2 ~]# systemctl enable httpd

3.3.数据库配置

1.安装mysql
[root@zabbix-server ~]# yum -y install mariadb-server

2.启动数据库
[root@zabbix-server ~]# systemctl start mariadb.service 
[root@zabbix-server ~]# systemctl enable mariadb.service

3.mysql安全配置,回车、n、一路y
[root@zabbix-server ~]# mysql_secure_installation 
Enter current password for root (enter for none): 
OK, successfully used password, moving on...

Set root password? [Y/n] n
 ... skipping.

Remove anonymous users? [Y/n] y
 ... Success!

Disallow root login remotely? [Y/n] y
 ... Success!

Remove test database and access to it? [Y/n] y
 - Dropping test database...
 ... Success!
 - Removing privileges on test database...
 ... Success!

Reload privilege tables now? [Y/n] y
 ... Success!

4.创建数据库并授权
[root@zabbix-server ~]# mysql
MariaDB [(none)]> create database zabbix character set utf8 collate utf8_bin;
MariaDB [(none)]> grant all privileges on zabbix.* to zabbix@'%' identified by '123456';

授权root用户远程登录并使用Navicat去查看数据库
MariaDB [(none)]>  grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;

5.导入zabbix SQL
[root@zabbix-server ~]# zcat /usr/share/doc/zabbix-server-mysql-4.0.24/create.sql.gz | mysql -uroot -p123456 zabbix

扩展:zcat可以看到压缩包中的文件内容,但是必须压缩包中只有一个文件

3.4.页面安装zabbix

两台zabbix都操作

访问:https://192.168.81.70/zabbix/setup.php

在这里插入图片描述

检查环境

在这里插入图片描述

数据库选择192.168.81.210

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默认即可
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3.5.登陆zabbix

由于192.168.81.210上的zabbix是一开始部署的因此上面的数据会和210一致

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4.部署高可用

4.1.安装配置keepalived

将两台都配成BACKUP,优先级不同,让其自动选举

keepalive01配置

1.安装
[root@zabbix-server ~]# yum -y install keepalived

2.配置keepalived
[root@zabbix-server ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
router_id LVS_DEVEL 29
}

vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}

virtual_ipaddress {
192.168.81.222
}

notify_master /opt/to_master.sh
}

3.启动keepalived
[root@zabbix-server ~]# systemctl start keepalived
[root@zabbix-server ~]# systemctl enable keepalived

keepalive02配置

1.安装
[root@zabbix-server2 ~]# yum -y install keepalived

2.配置keepalived
[root@zabbix-server2 ~]# vim /etc/keepalived/keepalived.conf 
! Configuration File for keepalived

global_defs {
router_id LVS_DEVEL 30
}

vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}

virtual_ipaddress {
192.168.81.222
}

notify_master /opt/to_master.sh
}

3.启动keepalived
[root@zabbix-server2 ~]# systemctl start keepalived
[root@zabbix-server2 ~]# systemctl enable keepalived

4.2.查看keepalived vip地址

由于192.168.81.210上的优先级比较高,因此vip在192.168.81.210上
[root@zabbix-server ~]# ip addr | grep ens33
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    inet 192.168.81.210/24 brd 192.168.81.255 scope global ens33
    inet 192.168.81.222/32 scope global ens33

4.3.编写keepalived主备切换关闭zabbix-server的脚本

我们可以使用sshpass命令指定密码去关掉已经挂掉的主机的zabbix-server服务

192.168.81.210脚本内容
[root@zabbix-server ~]# vim  /opt/to_master.sh
#!/bin/bash
sshpass -p redhat ssh -o StrictHostKeyChecking=no root@192.168.81.70 "systemctl stop zabbix-server"
systemctl restart zabbix-server

[root@zabbix-server ~]# chmod a+x /opt/to_master.sh

192.168.81.70脚本内容
[root@zabbix-server2 ~]# vim  /opt/to_master.sh
#!/bin/bash
sshpass -p redhat ssh -o StrictHostKeyChecking=no root@192.168.81.210 "systemctl stop zabbix-server"
systemctl restart zabbix-server

[root@zabbix-serve2 ~]# chmod a+x /opt/to_master.sh

4.4.模拟192.168.81.210主服务挂掉

将192.168.81.210keepalived停掉,严重vip是否漂移且zabbix-server会不会停掉

192.168.81.210操作

[root@zabbix-server ~]# systemctl stop keepalived

192.168.81.70查看是否获得vim

已经获得vip
[root@zabbix-server2 ~]# ip addr |grep ens33
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    inet 192.168.81.70/24 brd 192.168.81.255 scope global ens33
    inet 192.168.81.222/32 scope global ens33

192.168.81.210查看是否关掉zabbix-server服务

[root@zabbix-server ~]# netstat -lnpt | grep zabbix-server

5.添加zabbix监控主机

5.1.zabbix-server设置出口ip

因为我们做的是高可用,一个网卡有多个ip,因此我们要指定vip为出口ip,否则无法向zabbix-agent发送数据

两台zabbix-server都需要配置,配置完重启zabbix-server
[root@zabbix-server ~]# vim /etc/zabbix/zabbix_server.conf 
SourceIP=192.168.81.222

[root@zabbix-server2 ~]# vim /etc/zabbix/zabbix_server.conf 
SourceIP=192.168.81.222

5.2.安装配置agent

在客户端安装zabbix-agent
[root@192_168_81_245 ~]# yum -y instakk zabbix-agent

[root@192_168_81_245 ~]# vim /etc/zabbix/zabbix_agentd.conf 
Server=192.168.81.222
ServerActive=192.168.81.222

[root@192_168_81_245 ~]# systemctl restart zabbix-agent

5.3.添加监控主机

访问:http://192.168.81.222/zabbix

添加主机
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链接模板

在这里插入图片描述

添加成功

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文章来源: jiangxl.blog.csdn.net,作者:Jiangxl~,版权归原作者所有,如需转载,请联系作者。

原文链接:jiangxl.blog.csdn.net/article/details/116163213

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