CentOS/RHEL7部署Zabbix监控（部署篇之服务器篇）

CentOS7

LAMP

Zabbix-server

sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config

systemctl stop firewalld   #关闭防火墙

yum -y install wget net-snmp-devel OpenIPMI-devel httpd openssl-devel Java lrzsz fping-devel libcurl-devel perl-DBI pcre-devel libxml2 libxml2-devel mysql-devel gcc php php-bcmath php-gd php-xml php-mbstring php-ldap php-mysql.x86_64 php-pear php-xmlrpc net-tools wget vim-enhanced

wget -P /etc/yum.repos.d http://mirrors.aliyun.com/repo/Centos-7.repo

yum -y install mariadb mariadb-server php php-mysql httpd

http：
systemctl start httpd
systemctl enable httpd
mariadb:
systemctl start mariadb
systemctl enable mariadb
使用 netstat -lntp 查看端口启动情况（80 和 3306 端口）

编辑配置文件 httpd.conf
vi /etc/httpd/conf/httpd.conf
DirectoryIndex index.html index.php  #添加 index.php
:wq  #保存退出 
 编辑 php 测试页面：
cd /var/www/html/
vi index.php
<?php

   $servername = “localhost”;
   $username = “zabbix”;
   $password = “zabbix”;
   // 创建连接
   $conn = new mysqli($servername, $username, $password);
   // 检测连接
   if ($conn->connect_error) {
   die(“ 连接 mariadb 失败!!: ” . $conn->connect_error);
   }
   echo “ 连接 mariadb 成功!!”;
   phpinfo();
   php?>

 重启 httpd 服务器：systemctl restart httpd

grant all privileges on *.* to 'root'@'localhost' identified by 'withub';
grant all privileges on *.* to 'root'@'%' identified by 'withub';

mysql -uroot -pwithub
create database zabbix default character set utf8 collate utf8_bin;

grant all privileges on zabbix.* to 'zabbix'@'localhost' identified by 'zabbix';
grant all privileges on zabbix.* to 'zabbix'@'%' identified by 'zabbix';
flush privileges;  #刷新数据库

mysql -uzabbix -pzabbix
show databases;  #查看数据库
quit  #退出数据库

rpm -ivh http://mirrors.aliyun.com/epel/7/x86_64/e/epel-release-7-6.noarch.rpm
rpm -ivh http://repo.zabbix.com/zabbix/3.0/rhel/7/x86_64/zabbix-release-3.0-1.el7.noarch.rpm

yum -y install zabbix-server-mysql zabbix-web-mysql zabbix-get

cd /usr/share/doc/zabbix-server-mysql-3.0.2/
导入 zabbix 数据库
zcat create.sql.gz | mysql -uroot -pwithub zabbix

修改 zabbix sever 的配置文件
vim /etc/zabbix/zabbix_server.conf
LogFile=/var/log/zabbix/zabbix_server.log
LogFileSize=0
PidFile=/var/run/zabbix/zabbix_server.pid
DBHost=localhost
DBName=zabbix
DBUser=zabbix
DBPassword=zabbix
SNMPTrapperFile=/var/log/snmptrap/snmptrap.log
Timeout=4
AlertScriptsPath=/usr/lib/zabbix/alertscripts
ExternalScripts=/usr/lib/zabbix/externalscripts
LogSlowQueries=3000
上述配置文件中，我们只需要关注 DBHost、DBName、DBUser、DBPassword 几项即可。这几项是配置 zabbix server 连接 mysql 数据库的参数。

修改 httpd 中 zabbix.conf 参数
vim /etc/httpd/conf.d/zabbix.conf
Alias /zabbix /usr/share/zabbix
<Directory “/usr/share/zabbix”>
Options FollowSymLinks
AllowOverride None
Require all granted
<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 always_populate_raw_post_data -1
php_value date.timezone Asia/Chongqing  #这行改为目前参数，时区
</IfModule>
</Directory>

systemctl start zabbix-server
systemctl enable zabbix-server

Centos7 中 gnutls.x86_64（gnutls.x86_64 3.3.8-14.el7_2）版本过高，需要降级 3.1.18-8.el7（1.20）
解决办法:

1. 下载 gnutls-3.1.18-8.el7.x86_64.rpm
2. 降级 gnutls
rpm -Uvh --force  gnutls-3.1.18-8.el7.x86_64.rpm    即可

重启 httpd：systemctl restart httpd

重启 zabbix-server：systemctl restart zabbix-server