keepalived notification example

keepalived notification example

Notification Configuration

The script is triggered when the current node becomes the master node: <QUOTED-STRING> | notify_master <STRING>

Script triggered the current node into standby node: <QUOTED-STRING> | notify_backup <STRING>

The script is triggered when the current node to "failed" states: <QUOTED-STRING> | notify_fault <STRING>

notify <STRING> | <QUOTED-STRING>: notification triggers a common format, a script can be completed notification of conversion of more than three states

ubuntu 1804 send e-mail qq

root@z6:~# vi /etc/apt/sources.list   追加 
deb http://cz.archive.ubuntu.com/ubuntu xenial main universe

root@z6:~# apt-get update
root@z6:~# apt install heirloom-mailx

root@z6:~# vim /etc/s-nail.rc   添加发件人
set from=" [email protected]"
set smtp="smtps://smtp.qq.com:465"
set smtp-auth-user="[email protected]"
set smtp-auth-password="qieqdcaxxxkbhbb"
set smtp-auth=login

Test whether you can send a message qq

root@z6:~# echo "omg" | heirloom-mailx  -s "kiss the rain"  [email protected]

Script notify.sh notice

#!/bin/bash
contact='[email protected]'
notify() {
	mailsubject="$(hostname) to be $1, vip转移"
	mailbody="$(date +'%F %T'): vrrp transition, $(hostname) changed to be $1"
	echo "$mailbody" | heirloom-mailx  -s "$mailsubject" $contact
}

case $1 in
master)
notify master 
;;
backup)
notify backup
;;
fault)
notify fault
;;
*)
echo "Usage: $(basename $0) {master|backup|fault}"
exit 1
;;
esac

keepalive call script

root@z6:~# chmod +x /etc/keepalived/notify.sh

keepalived.conf Configuration

vrrp_instance VI_1{
    state  MASTER
    interface eth0
    virtual_router_id 50
    priority 70
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111qwer

    }
    virtual_ipaddress {
        192.168.7.248/24  dev eth0 label eth0:1
    }
    notify_master "/etc/keepalived/notify.sh master"
    notify_backup "/etc/keepalived/notify.sh backup"
    notify_fault "/etc/keepalived/notify.sh fault"

}

Add the following two lines or log alarms

global_defs {

   script_user root
   enable_script_security 
 
}

Mar 26 15:23:00 z6 Keepalived_vrrp[1854]: WARNING - default user 'keepalived_script' for script execution does not exist - please create.

Mar 26 15:28:18 z6 Keepalived_vrrp[1907]: SECURITY VIOLATION - scripts are being executed but script_security not enabled. There are insecur
e scripts.

Start and stop the test keepalived

result