playbook简介

playbooks是一个不同于使用Ansible命令行执行方式的模式, 其功能更强大灵活; playbook是一个非常简单的配置管理和多主机部署系统, 不同于任何已经存在的模式,可作为一个适合部署复杂应用程序的基础; Playbook可以定制配置, 可以按照指定的操作步骤有序执行, 支持同步和异步方式.

playbook格式

---
- hosts: webserver
  remote_user: root
  gather_facts: true
  vars:
    package: nginx
  tasks:
    - name: transfer nginx source.
      template: src=configfile/nginx.repo dest=/etc/yum.repos.d/nginx.repo
  
    - name: install nginx service.
      yum: name={{ package }} state=latest

    - name: configure nginx service.
      template: src=configfile/vhost.conf dest=/etc/nginx/conf.d/default.conf
      notify: restart nginx service

    - name: install mariadb service.
      yum: name={{ item }} state=latest
      with_items:
        - mariadb-server
        - mariadb
        - epel-release
      notify: restart mariadb service

    - name: setting database's password
      shell: mysql -uroot -e "create user 'ansible'@'%' identified by '123456';"

    - name: install php env
      yum: name={{ item }} state=latest
      with_items:
        - php
        - php-fpm
        - php-xml
        - php-devel
        - php-gd
        - php-mysql
        - php-mbstring
        - php-mcrypt
      notify: restart php-fpm service

    - name: transfer test page
      template: src=configfile/index.php dest=/usr/share/nginx/html/index.php

  handlers:
    - name: restart nginx service
      service: name=nginx state=restarted

    - name: restart mariadb service
      service: name=mariadb state=restarted

    - name: restart php-fpm service
      service: name=php-fpm state=restarted

# 检查语法是否有误
[root@control_machine ~]# ansible-playbook .ansible/playbook/lnmp_deploy.yaml --syntax-check
playbook: .ansible/playbook/lnmp_deploy.yaml

##### JinJa2模板

variables变量的使用实例: 生成nginx配置文件

# nginx.j2

server {
    listen       {{ http_port }};
    server_name  {{ http_name }};

    charset koi8-r;
    access_log  /var/log/nginx/{{ http_name }}.access.log  main;

    location / {
        root   /usr/share/nginx/html;
        index  index.php index.html index.htm;
    }

    error_page   404              /404.html;
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }

    location ~ \.php$ {
        root           /usr/share/nginx/html;
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }
}

protected-mode yes
port {{ redis_port }}
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile /var/run/redis_6379.pid
loglevel notice
logfile "{{ redis_log_path }}"
databases {{ redis_databases }}
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ./
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes

protected-mode yes
port {{ redis_port }}
tcp-backlog 511
timeout 0
tcp-keepalive 300
daemonize yes
supervised no
pidfile /var/run/redis_6379.pid
loglevel notice
logfile "{{ redis_log_path }}"
databases {{ redis_databases }}
always-show-logo yes
save 900 1
save 300 10
save 60 10000
stop-writes-on-bgsave-error yes
rdbcompression yes
rdbchecksum yes
dbfilename dump.rdb
dir ./
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes

---
- hosts: webserver
  vars:
    http_port: 80
    http_name: www.qfedu.com
  tasks:
    - name: transfer jinja2 module file.
      template:
          src=nginx.j2
          dest=/tmp/nginx.conf

---
- hosts: redis
  vars:
    redis_port: 6379
    redis_log_path: "/var/log/redis.log"
    redis_databases: 10
  tasks:
    - name: transfer jinja2 module file.
      template:
          src=redis.j2
          dest=/tmp/redis.conf