1、编写Playbook
cat << 'CAT_END' > install_keepalived.yaml
- hosts: httpd
tasks:
- name: Install keepalived server
yum:
name: keepalived
state: present
- name: configure keepalived server
template:
src: ./conf/keepalived.conf.j2
dest: /etc/keepalived/keepalived.conf
notify: restart keepalived server
- name: system start keepalived server
systemd:
name: keepalived
state: started
enabled: yes
handlers:
- name: restart keepalived server
systemd:
name: keepalived
state: restarted
CAT_END
2、准备配置文件
cat <<'CAT_END'>keepalived.conf.j2
global_defs {
router_id {{ ansible_fqdn }}
}
vrrp_instance VI_1 {
{% if ansible_fqdn == 'http1' %}
state MASTER
priority 150
{% elif ansible_fqdn == 'http2' %}
state Backup
priority 100
{% endif %}
interface ens33
virtual_router_id 50
advert_int 3
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.10.200
}
}
CAT_END
3、语法检查
ansible-playbook install_keepalived.yaml --syntax-check
4、部署
]# ansible-playbook install_keepalived.yaml
PLAY [httpd] *************************************************************************************************************************************************
TASK [Gathering Facts] ***************************************************************************************************************************************
ok: [192.168.10.18]
ok: [192.168.10.17]
TASK [Install keepalived server] *****************************************************************************************************************************
changed: [192.168.10.18]
changed: [192.168.10.17]
TASK [configure keepalived server] ***************************************************************************************************************************
changed: [192.168.10.17]
changed: [192.168.10.18]
TASK [system start keepalived server] ************************************************************************************************************************
changed: [192.168.10.18]
changed: [192.168.10.17]
RUNNING HANDLER [restart keepalived server] ******************************************************************************************************************
changed: [192.168.10.17]
changed: [192.168.10.18]
PLAY RECAP ***************************************************************************************************************************************************
192.168.10.17 : ok=5 changed=4 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
192.168.10.18 : ok=5 changed=4 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
5、查询vip是否开启
[root@http1 ~]# ip addr | grep 200
inet 192.168.10.200/32 scope global ens33
