keepalived的部署和告警系統的配置

主機名節點型別

192.168.100.61

server1

master

192.168.100.62

server2

backup

建議關閉防火牆和selinux

學習目標：

1.部署keepalived；

2.配置keepalived日誌；

3.配置自定義監測httpd服務指令碼；

一、安裝keepalived和httpd（兩個節點都需要執行）

二、修改keepalived配置檔案

master節點：

[root@server1 ~]
# vim /etc/keepalived/keepalived.conf
global_defs 
vrrp_script chk_nginx 
vrrp_instance vi_1 
virtual_ipaddress 
track_script 
}

backup節點：

[root@server2 ~]
# vim /etc/keepalived/keepalived.conf
global_defs 
vrrp_script chk_nginx 
vrrp_instance vi_1 
virtual_ipaddress 
track_script 
}

三、建立健康檢查指令碼並授執行許可權（以下兩個節點都需要執行）

授權

# chmod 755 /usr/local/sbin/chk_httpd.sh

四、設定日誌系統（兩個節點都設定，以便日後運維排錯）

# vim /etc/sysconfig/keepalived keepalived_options= "-d -d -s 0"

# vim /etc/rsyslog.conf //找到此行 $actionfiledefaulttemplate rsyslog_traditionalfileformat //在下面新增此行 local0.* /var/log/keepalived.log

五、重啟rsyslog和keepalived生效配置（兩個節點都執行）

# systemctl restart rsyslog # systemctl restart keepalived

六、測試

關閉server1的keepalived，測試vip是否會跳到backup節點

檢視server2的網絡卡資訊，檢視vip是否已經轉到server2

檢視兩個主機的日誌，可以看到剛剛主機的活動過程，這裡使用「 tail -f [檔名] 」可實施檢視日誌的更新

一、安裝郵件服務

[root@server1 ~]
# yum -y install mailx sendmail

修改郵件服務配置檔案

[root@server1 ~]
# vim /etc/mail.rc 
##在配置檔案中新增以下引數
set from=******[email protected]  //郵箱賬號
set smtp=smtp.qq.com
set smtp-auth-user=******[email protected]     //郵箱賬號
set smtp-auth-password=*********xx   //郵箱smtp驗證碼
set smtp-auth=login

二、編寫郵件通知指令碼

[root@server1 ~]
# vim  /etc/keepalived/notify.sh 
#!/bin/bash
contact=
'[email protected]'
notify(
)case
$1in
master)
notify master	;;
backup)
notify backup	;;
fault)
notify fault	;;
*)echo
"usage: $(
basename $0)
"	ecit 1	;;
esac

三、開啟觸發動作

[root@server1 ~] # vim /etc/keepalived/keepalived.conf vrrp_instance vi_1 virtual_ipaddress track_script ##新增以下引數 notify_master "/bin/bash /etc/keepalived/notify.sh master" //當此節點成為master的時候執行後面的動作 notify_backup "/bin/bash /etc/keepalived/notify.sh backup" //當此節點成為backup的時候執行後面的動作 notify_fault "/bin/bash /etc/keepalived/notify.sh fault" //當此節點狀態報錯的時候執行後面的動作

}

四、測試

關閉server節點的keepalived

[root@server1 ~]
# systemctl stop keepalived

qq郵箱收到郵件，提示server2已經成為新的節點

keepalived的部署和告警系統的配置

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