系统部署之keepalived安装

文章目录

[隐藏]

• 安装文件
• 编译安装
• 修改配置

安装文件

• keepalived-1.3.5.tar.gz

编译安装

./configure  make && make install  

修改配置

机器1

/etc/keepalived/keepalived.conf    ! Configuration File for keepalived  global_defs {      notification_email {          root@localhost      }      notification_email_from [email protected]      smtp_server mail.example.com      smtp_connect_timeout 30      router_id LVS_DEVEL  }  vrrp_script chk_nginx {      script "/etc/keepalived/check_nginx.sh"      interval 2      weight -5      fall 3      rise 2  }  vrrp_instance VI_1 {      state MASTER      interface 网卡接口名      virtual_router_id 51      priority 101      advert_int 1      authentication {          auth_type PASS          auth_pass 1111      }      virtual_ipaddress {          虚拟地址1      }      track_script {         chk_nginx      }  }  vrrp_instance VI_2 {      state BACKUP      interface 网卡接口名      virtual_router_id 52      priority 100      advert_int 1      authentication {          auth_type PASS          auth_pass 1111      }      virtual_ipaddress {          虚拟地址2      }      track_script {         chk_nginx      }  }  

机器2

! Configuration File for keepalived  global_defs {      notification_email {          root@localhost      }      notification_email_from [email protected]      smtp_server mail.example.com      smtp_connect_timeout 30      router_id LVS_DEVEL  }  vrrp_script chk_nginx {      script "/etc/keepalived/check_nginx.sh"      interval 2      weight -5      fall 3      rise 2  }  vrrp_instance VI_1 {      state BACKUP      interface 网卡接口名      virtual_router_id 51      priority 100      advert_int 1      authentication {          auth_type PASS          auth_pass 1111      }      virtual_ipaddress {          虚拟地址1      }      track_script {         chk_nginx      }  }  vrrp_instance VI_2 {      state MASTER      interface 网卡接口名      virtual_router_id 52      priority 101      advert_int 1      authentication {          auth_type PASS          auth_pass 1111      }      virtual_ipaddress {          虚拟地址2      }      track_script {         chk_nginx      }  }  

nginx检查脚本

check_nginx.sh    #!/bin/bash  counter=$(ps -C nginx --no-heading|wc -l)  if [ "${counter}" = "0" ]; then      /usr/local/nginx/sbin/nginx      sleep 2      counter=$(ps -C nginx --no-heading|wc -l)      if [ "${counter}" = "0" ]; then          service keepalived stop      fi  fi  

系统服务

/lib/systemd/system/keepalived.service    [Unit]  Description=LVS and VRRP High Availability Monitor  After=syslog.target network.target    [Service]  Type=simple  PIDFile=/usr/local/var/run/keepalived.pid  KillMode=process  EnvironmentFile=-/usr/local/etc/sysconfig/keepalived  ExecStart=/usr/local/sbin/keepalived --dont-fork -D  ExecReload=/bin/kill -HUP $MAINPID    [Install]  WantedBy=multi-user.target  

测试

尝试关闭一台keepalived服务，查看另一台网络端口情况

注意事项

• 防火墙启用状态下执行

firewall-cmd --direct --permanent --add-rule ipv4 filter INPUT 0     --in-interface enp0s8 --destination 224.0.0.18 --protocol vrrp -j ACCEPT    firewall-cmd --direct --permanent --add-rule ipv4 filter OUTPUT 0     --out-interface enp0s8 --destination 224.0.0.18 --protocol vrrp -j ACCEPT    firewall-cmd --reload  

原文出处：shifei -> http://shifei.me/index.php/archives/7/