ansible自动部署集群服务
上面的思路大致是：
首先配置yum仓库，之后搭建http+php，之后搭建数据库，其次搭建nginx反代，最后设置keepalived自动化安装。
# pwd
/etc/ansible
# tree -L 3 roles/
roles/
├── base
│ ├── files
│ │ ├── mage6.repo
│ │ └── mage7.repo
│ └── tasks
│ └── main.yml
├── db
│ ├── files
│ │ ├── my6.cnf
│ │ └── my7.cnf
│ ├── handlers
│ │ └── main.yml
│ └── tasks
│ └── main.yml
├── http+php
│ ├── handlers
│ │ └── main.yml
│ ├── tasks
│ │ └── main.yml
│ ├── templates
│ │ ├── httpd.conf6.j2
│ │ └── httpd.conf7.j2
│ └── vars
│ └── main.yml
├── keepalived
│ ├── handlers
│ │ └── main.yml
│ ├── tasks
│ │ └── main.yml
│ └── templates
│ └── keepalived.conf.j2
├── nginx
│ ├── handlers
│ │ └── main.yml
│ ├── tasks
│ │ └── main.yml
│ ├── templates
│ │ └── nginx.conf.j2
│ └── vars
│ └── main.yml
└── webdata
├── files
│ ├── index.html
│ ├── index.php
│ └── wordpress
└── tasks
└── main.yml
最后建立完成要有这些文件
首先修改ansible主配置文件
# vim hosts
只留一下部分：
172.16.1.3 hhname=kepnx1.zou.com state=MASTER pri=100
172.16.1.5 hhname=kepnx2.zou.com state=BACKUP pri=98
172.16.1.11 hhname=hp1.zou.com
172.16.1.8 hhname=hp2.zou.com
172.16.1.12 hhname=db.zou.com
base
├── files
│ ├── mage6.repo
│ └── mage7.repo
└── tasks
└── main.yml
# vim base/tasks/main.yml
- name: install repo-file
copy: src=mage7.repo dest=/etc/yum.repos.d/
when:ansible_distribution_major_version == "7"
- name: install repo source for yum
copy: src=mage6.repo dest=/etc/yum.repos.d/
when:ansible_distribution_major_version == "6"
- name: rm some file of repos
shell: rm -rf /etc/yum.repos.d/C*
- name: set hostname
hostname: name={{ hhname }}
tags: sethostname
- name: install killall for ckeck servers's state
yum: name=psmisc state=latest
- name: install bash-completion
yum: name=bash-completion state=latest
之后准备好两个可以yum安装册仓库源设置好mage6.repo 和mage7.repo
http+php/
├── handlers
│ └── main.yml
├── tasks
│ └── main.yml
├── templates
│ ├── httpd.conf6.j2
│ └── httpd.conf7.j2
└── vars
└── main.yml
# vim http+php/handlers/main.yml
- name: restart httpdservice: name=httpd state=restarted
# vim http+php/tasks/main.yml
- name: install httpyum: name=httpd state=latest- name: install phpyum: name=php state=latest- name: install php-mysqlyum: name=php-mysql state=latest- name: install php-gdyum: name=php-gd state=latest- name: install php-mbstingyum: name=php-mbstring state=latestwhen: ansible_distribution_major_version == "7"- name: install php-xmlyum: name=php-xml state=latest- name: mkdir web' filefile: path={{ htdocumentroot }} state=directory- name: install httpd.conftemplate: src=httpd.conf6.j2 dest=/etc/httpd/conf/httpd.confnotify: restart httpdtags: rehttpdconfwhen: ansible_distribution_major_version == "6"- name: install httpd.conftemplate: src=httpd.conf7.j2 dest=/etc/httpd/conf/httpd.confnotify: restart httpdtags: rehttpdconfwhen: ansible_distribution_major_version == "7"- name: start httpdservice: name=httpd state=started
# vim http+php/templates/httpd.conf6.j2
修改：
Listen {{ htport }}
DocumentRoot "{{ htdocumentroot }}"
<Directory "{{ htdocumentroot }}">
ErrorLog {{ htdocumentroot }}/error_log
CustomLog {{ htdocumentroot }}/access_log combined
# vim http+php/templates/httpd.conf7.j2
修改：
Listen {{ htport }}
User {{ htuser }}
Group {{ htgroup }}
ServerName {{ hhname }}:80
DocumentRoot "{{ htdocumentroot }}"
<Directory "{{ htdocumentroot }}">
<Directory "{{ htdocumentroot }}">
ErrorLog "{{ htdocumentroot }}/error_log"
CustomLog "{{ htdocumentroot }}/access_log" combined
# vim http+php/vars/main.yml
htuser: apache
htgroup: apache
htport: 80
htdocumentroot: /data/www
db
├── files
│ ├── my6.cnf
│ └── my7.cnf
├── handlers
│ └── main.yml
└── tasks
└── main.yml
# vim files/my6.cnf
datadir=/data/db
socket=/var/lib/mysql/mysql.sock
user=mysql
innodb_file_per_table=ON
skip_name_resolve=ON
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
# vim files/my7.cnf
datadir=/data/db
socket=/var/lib/mysql/mysql.sock
innodb_file_per_table=ON
skip_name_resolve=ON
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
vim handlers/main.yml
- name: restart mariadb
service: name=mariadb state=restarted
- name: restart mysql
service: name=mysqld state=restarted
# vim tasks/main.yml
- name: install mariadb-server
yum: name=mariadb-server state=latest
when: ansible_distribution_major_version == "7"
- name: install mysql-server
yum: name=mysql-server state=latest
when: ansible_distribution_major_version == "6"
- name: build data file
file: path=/data/db owner=mysql group=mysql state=directory
- name: install mariadb conf
copy: src=my7.cnf dest=/etc/my.cnf
notify: restart mariadb
tags: remariadbconf
when: ansible_distribution_major_version == "7"
- name: install mysql conf
copy: src=my6.cnf dest=/etc/my.cnf
notify: restart mysql
tags: remysqlconf
when: ansible_distribution_major_version == "6"
- name: start mariadb
service: name=mariadb state=started
when: ansible_distribution_major_version == "7"
- name: start mysql
service: name=mysqld state=started
when: ansible_distribution_major_version == "6"
webdata/
├── files
│ ├── index.html
│ ├── index.php
│ └── wordpress
└── tasks
└── main.yml
# vim webdata/tasks/main.yml
- name: web of index.html for test
copy: src=index.html dest=/data/www
- name: web of index.php for test
copy: src=index.php dest=/data/www
- name: web of wordpress
copy: src=wordpress dest=/data/www/
tags: copywordpress
# vim webdata/files/index.html
web form {{ hhname }} the version is {{ ansible_distribution_major_version }};
# vim webdata/files/index.ph
<?php
$conn=mysql_connect('172.16.1.12','zou','123.comer');
if($conn)
echo ok;
echo the web from {{ hhname }};
else
echo fault;
mysql_close();
phpinfo()
?>
之后准备好wordpress网页压缩包解压缩只有放到这个响应的位置，并编辑好wp-config.php
nginx
├── handlers
│ └── main.yml
├── tasks
│ └── main.yml
├── templates
│ └── nginx.conf.j2
└── vars
└── main.yml
# vim tasks/main.yml
- name: install nginx package
yum: name=nginx state=present
- name: install conf file
template: src=nginx.conf.j2 dest=/etc/nginx/nginx.conf
notify: restart nginx
tags: reinstallconf
- name: start nginx
service: name=nginx state=started enabled=true
# cat handlers/main.yml
- name: restart nginx
service: name=nginx state=restarted
# cat vars/main.yml
username: nginx
# grep -v '^[[:space:]]\+#' templates/nginx.conf.j2
user{{ username }};
worker_processes{{ ansible_processor_vcpus }};
error_log/var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections1024;
}
http {
include /etc/nginx/mime.types;
default_typeapplication/octet-stream;
log_formatmain'$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log/var/log/nginx/access.logmain;
sendfile on;
keepalive_timeout65;
gzipon;
upstream backend {
server 172.16.1.8;
server 172.16.1.11 weight=2;
}
include /etc/nginx/conf.d/*.conf;
#########################################################################
#sorry nginx #
###################
server {
listen 80;
server_name{{ hhname }};
#
location / {
proxy_pass http://backend;
index index.html index.php;
}
error_page 500 502 503 504/50x.html;
}
}
keepalived/
├── handlers
│ └── main.yml
├── tasks
│ └── main.yml
└── templates
└── keepalived.conf.j2
# vim tasks/main.yml
- name: install the keepalived
yum: name=keepalived state=latest
- name: install ntpdate
yum: name=ntpdate state=latest
- name: make time to equal
shell: ntpdate 172.16.0.1
- name: install the conf_file
template: src=keepalived.conf.j2 dest=/etc/keepalived/keepalived.conf
notify: restart keepalived
tags: rekeepconf
- name: start keepalived
service: name=keepalived state=started enabled=true
# vim handlers/main.yml
- name: restart keepalived
service: name=keepalived state=restarted
# cat templates/keepalived.conf.j2
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id {{ hhname }}
vrrp_mcast_group4 224.0.101.1
}
vrrp_script chk_nginx {
script "killall -0 nginx && exit 0 || exit 1"
interval 1
weight -5
}
track_script {
chk_nginx
}
vrrp_instance VI_1 {
state {{ state }}
interface eno16777736
virtual_router_id 101
priority {{ pri }}
advert_int 1
authentication {
auth_type PASS
auth_pass 123.com
}
virtual_ipaddress {
172.16.1.4
}
track_script {
chk_nginx
}
}
基本定义完成角色，但是要想要生效还要调用角色，执行才能实现集群的部署
/root/myansible/
├── base.yml
├── db.yml
├── hp+webdata.yml
├── http+php.yml
└── keng.yml
# cat base.yml
- hosts: all
remote_user: root
roles:
- base
# cat http+php.yml
- hosts: httphp
remote_user: root
roles:
- http+php
# cat db.yml
- hosts: db
remote_user: root
roles:
- db
# cat hp+webdata.yml
- hosts: httphp
remote_user: root
roles:
- webdata
# cat keng.yml
- hosts: keepnginx
remote_user: root
roles:
- keepalived
- { role: nginx, username: nginx, when: "ansible_distribution_major_version == '7'" }
ansible是不同启动的，安装完毕，配置好hosts文件即可使用，这就是安装了一个命令
# ansible-playbook base.yml --check
# ansible-playbook base.yml
# ansible-playbook http+php.yml --check# ansible-playbook http+php.yml
# ansible-playbook db.yml --check# ansible-playbook db.yml
# ansible-playbook hp+webdata.yml --check# ansible-playbook hp+webdata.yml
# ansible-playbook keng.yml --check# ansible-playbook keng.yml
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