1、安裝apache，做初始配置，并啟動服務(wù)：

這個是你選擇的主機

• hosts: webservers

這個是變量

vars:

http_port: 80

max_clients: 200

遠端的執(zhí)行權(quán)限

remote_user: root

tasks:

利用yum模塊來操作

• name: ensure apache is at the latest version

  yum: pkg=httpd state=latest

• name: write the apache config file

  template: src=/srv/httpd.j2 dest=/etc/httpd.conf

觸發(fā)重啟服務(wù)器

notify:

- restart apache

• name: ensure apache is running

  service: name=httpd state=started

這里的restart apache 和上面的觸發(fā)是配對的。這就是handlers的作用。相當(dāng)于tag

handlers:

- name: restart apache

  service: name=httpd state=restarted

2、可以同時使用10個進程進行，調(diào)用格式為：
ansible-playbook test.yml -f 10

3、對于沒有把握執(zhí)行的任務(wù)，需要加上 ignore_errors: True，這樣即使出錯，下一個任務(wù)也會繼續(xù)執(zhí)行

4、ansible-playbook可以根據(jù)上一個任務(wù)的執(zhí)行結(jié)果，來判斷執(zhí)行下一個任務(wù)，系統(tǒng)參數(shù)為when:
tasks:

• shell: /usr/bin/foo

  register: foo_result

  ignore_errors: True

• name: "cmd"

  action: command touch /root/kkkkk

  when: foo_result.rc == 127

5、根據(jù)操作系統(tǒng)類型，執(zhí)行不同安裝：

• hosts: all
  remote_user: root
  gather_facts:True
  tasks:
• name: install apache on CentOS
  yum: name=httpd state=present
  when: ansible_os_family =="CentOS"
• name: install apache on Debian
  yum: name=apache2 state=present
  when: ansible_os_family =="Debian"

6、notify和handlers來執(zhí)行觸發(fā)，handlers可多次調(diào)用：

• name: template configuration file
  template: src=template.j2 dest=/etc/foo.conf
  notify:
  • restart memcached
  • restart apache
    handlers:
  • name: restart memcached
    service: name=memcached state=restarted
  • name: restart apache
    service: name=apache state=restarted

7、執(zhí)行多個變量，每個變量為一次任務(wù)：
tasks:

• name: panduan
  command: echo {{ item }}
  with_items: [ 0,2,4,6,8,10 ]

8、特定任務(wù)用特定用戶執(zhí)行：

• hosts: webnodes
  remote_user: mageedu
  tasks:
  • name: test connection
    ping:
    remote_user: mageedu
    sudo: yes

9、捕獲執(zhí)行中的錯誤，并進行補救：
tasks:

• block:
  • name: Create {{ maildir_path }}
    copy:
    src: "{{ maildir }}"
    dest: "{{ maildir_path }}"
    mode: 0755
    register: command_output
    rescue:
  • name: Install mail packages
    yum:
    name: "{{ item }}"
    state: latest
    with_items:
    • "{{ mail_package }}"
    • dovecot
      always:
  • name: start the mail service
    service:
    name: "{{ mail_service }}"
    state: restarted

10、對任務(wù)做tag標記，可以只執(zhí)行某個tag，執(zhí)行語法為：ansible-playbook -t TAGS_NAME playbook.yaml

• hosts: all #所有遠程主機
  remote_user: root #以遠程主機上root用戶執(zhí)行
  tasks: #任務(wù)
  • name: install redis #任務(wù)之安裝
    yum: name=redis state=latest #動作調(diào)用yum模塊安裝
  • name: copy config file #任務(wù)之復(fù)制同步配置文件到遠程目標主機
    copy: src=/root/playbooks/redis.conf dest=/etc/redis.conf owner=redis #動作copy模塊執(zhí)行
    notify: restart redis #觸發(fā)的動作
    tags: configfile #任務(wù)標記名configfile

11、從外部傳入變量，ansible-playbook的格式為：ansible-playbook tomcat-install.yml --extra-vars "{'host':'192.168.11.111', 'tomcat_home':'/opt/tomcat-test', 'url':'http://www.apache.com/tomcat-7.0.57.tar.gz'}"

• name: Tomcat install and configuration

  hosts: "{{ host }}"

  user: root

vars:

tomcat_home: "{{ tomcat_home }}" 

tasks:

- name: absent old tomcat

  file: path={{ item }} state=absent

  with_items:

    - "{{ tomcat_home }}"

    - /geelyapp/auto_scripts/tomcat.sh

- name: get tomcat_tar_gz

  get_url: url={{ url }} dest=/tmp/tomcat.tar.gz

- name: Create the dir

  file: path={{ item }} state=directory

  with_items:

    - /geelyapp/gc_log

    - /geelyapp/auto_scripts

    - "{{ tomcat_home }}"