Ansible deploy simple high-availability lamp

Ansible deploy simple high-availability lamp

Ansible Host: 192.168.152.145
HA1 (highavailable): 192.168.152.140
ha2:192.168.152.141
VIP1 (virtualip): 192.168.152.190
vip2:192.168.152.191
AP1 (apache+php): 192.168.152.142
AP2 (apache+php): 192.168.152.143
db:192.168.152.144

Configure Ansible

Yum-y Install Ansible
Vim/etc/ansible/hosts

[nginx]192.168.152.140192.168.152.141[ap]192.168.152.142192.168.152.143[db]192.168.152.144

Ssh-keygen-t Rsa-p '
Ssh-copy-id-i. ssh/id_rsa.pub [Email protected]
Ssh-copy-id-i. ssh/id_rsa.pub [Email protected]
Ssh-copy-id-i. ssh/id_rsa.pub [Email protected]
Ssh-copy-id-i. ssh/id_rsa.pub [Email protected]
Ssh-copy-id-i. ssh/id_rsa.pub [Email protected]
Ansible all-m Ping Test connectivity

Create roles
Mkdir/etc/ansible/roles/keepalived/{files,tasks,templates,handlers,vars,default}-PV
Mkdir/etc/ansible/roles/nginx/{files,tasks,templates,handlers,vars,default}-PV
Mkdir/etc/ansible/roles/apachephp/{files,tasks,templates,handlers,vars,default}-PV
Mkdir/etc/ansible/roles/database/{files,tasks,templates,handlers,vars,default}-PV

Vim/etc/ansible/roles/keepalived/tasks/main.yml

-Name:install keepalived yum:name=keepalived state=present-name:install conf file template:src=keepalived.conf.j2 Dest=/etc/keepalived/keepalived.conf-name:start keepalived service:name=keepalived state=started enabled=true

Vim/etc/ansible/roles/nginx/tasks/main.yml

-Name:install nginx yum:name=nginx state=present-name:install conf file template:src=nginx.conf.j2 Dest=/etc/nginx /nginx.conf-name:start nginx Service:name=nginx state=started enabled=true

Vim/etc/ansible/roles/apachephp/tasks/main.yml

-Name:install httpd yum:name=httpd state=present-name:install php yum:name=php state=present-name:install php-my SQL Yum:name=php-mysql state=present-name:install httpconf file template:src=http.conf.j2 dest=/etc/httpd/conf/httpd . conf-name:install HTML file template:src=html.index.j2 dest=/var/www/html/index.php-name:start httpd service:name =HTTPD state=started Enabled=true

Vim/etc/ansible/roles/database/tasks/main.yml

-Name:install mysql yum:name=mysql-server state=present when:ansible_distribution_major_version = = "6"-name:instal L MARIADB yum:name=mariadb-server state=present when:ansible_distribution_major_version = = "7"-Name:install conf fil E template:src=db.conf.j2 dest=/etc/my.cnf-name:start mysql service:name=mysqld state=started enabled=true when:an Sible_distribution_major_version = = "6"-Name:start mariadb service:name=mariadb state=started enabled=true when:ansi Ble_distribution_major_version = = "7"

cd/etc/ansible/roles/
Vim Keepalived/templates/keepalived.conf.j2

vrrp_instance vi_1 {    state master    interface  eno16777736    virtual_router_id 51    priority 150     advert_int 1    authentication {         auth_type PASS        auth_pass 1111     }    virtual_ipaddress {         192.168.152.190    }}vrrp_instance vi_2 {    state  BACKUP    interface eno16777736    virtual_router_id  151    priority 100    advert_int 1     authentication {        auth_type pass         auth_pass 1111    }    virtual_ipaddress {         192.168.152.191    }}

Vim Nginx/templates/nginx.conf.j2

HTTP {upstream webservers {server 192.168.152.142:80;    Server 192.168.152.143:80;        } location/{Proxy_pass http://webservers; }｝

Vim Apachephp/templates/http.conf.j2

DirectoryIndex index.html index.php

Vim Apachephp/templates/html.index.j2

Vim Database/templates/db.conf.j2
[mysqld]innodb_file_per_table = Onskip_name_resolve = On
Call roles
Mkdir/etc/ansible/yml
Vim/etc/ansible/yml/keepalived.yml
-Hosts:nginx remote_user:root roles:-keepalived
Vim/etc/ansible/yml/nginx.yml
-Hosts:nginx remote_user:root roles:-Nginx
Vim/etc/ansible/yml/apachephp.yml
-Hosts:ap remote_user:root roles:-apachephp
Vim/etc/ansible/yml/database.yml
-Hosts:db remote_user:root roles:-Database
Test
Ansible-playbook--check/etc/ansible/yml/keepalived.yml
Ansible-playbook--check/etc/ansible/yml/nginx.yml
Ansible-playbook--check/etc/ansible/yml/apachephp.yml
Ansible-playbook--check/etc/ansible/yml/database.yml
Run
Ansible-playbook--check/etc/ansible/yml/keepalived.yml
Ansible-playbook--check/etc/ansible/yml/nginx.yml
Ansible-playbook--check/etc/ansible/yml/apachephp.yml
Ansible-playbook--check/etc/ansible/yml/database.yml
Fine tuning required after completion
192.168.152.141 #主主高可用, 140 is 190 master, 191 standby, 141 191 master, 190 standby
Vim/etc/keepalived/keepalived.conf
vrrp_instance vi_1 {    state backup    interface  eno16777736    virtual_router_id 51    priority 100     advert_int 1    authentication {         auth_type PASS        auth_pass 1111     }    virtual_ipaddress {         192.168.152.190    }}vrrp_instance vi_2 {    state  MASTER    interface eno16777736    virtual_router_id  151    priority 150    advert_int 1     authentication {        auth_type pass         auth_pass 1111    }    virtual_ipaddress {         192.168.152.191    }}
192.168.152.143 #为区别与142主页内容, change the IP display
vim/var/www/html/index.php
192.168.152.144 #为root授权管理数据库权限, setting a password facilitates remote testing of connectivity
Mysql
Grant all privileges the  ' root ' @ ' 192.168.%.% ' identified by ' 12345678 '
When you are finished, you can view the IP address list to observe the drift of virtual addresses by shutting down one of the host keepalived services.
Close one of the host HTTP services to see if the Web page can continue to be accessed.
This article is from the "Liberalism" blog, make sure to keep this source http://edonkey.blog.51cto.com/887243/1782325
Ansible deploy simple high-availability lamp