ansible- 安装nginx

实际应用- 安装nginx

cd  /etc/ansible
mkdir nginx_install
mkdir  -p nginx_install/roles/{common,delete,install}/{handlers,files,meta,tasks,templates,vars}

说明：roles目录下有三个角色，common为一些准备操作，delete为删除nginx的操作，install为安装nginx的操作

每个角色下面又有几个目录，handlers下面是当发生改变时要执行的操作，通常用在配置文件发生改变，重启服务。files为安装时用到的一些文件，meta为说明信息，说明角色依赖等信息，tasks里面是核心的配置文件，templates通常存一些配置文件，启动脚本等模板文件，vars下为定义的变量

cd  nginx_install/roles

vim  ./common/tasks/main.yml //内容如下
- name: Install initializtion require software
  yum: name=` item ` state=installed
  with_items:
    - gcc
    - zlib-devel
    - pcre-devel
vim  ./install/vars/main.yml
nginx_user: www
nginx_port: 80
nginx_web_dir: /data/www
nginx_version: 1.4.3

ls ./install/files/
nginx-1.4.3.tar.gz

说明： 我们需要把源码包放到 files目录里面

ls ./install/templates
index.html index.php install_nginx.sh nginx nginx.conf vhost.conf

说明： 需要再templates下面准备好 默认页、安装nginx的shell脚本、nginx启动脚本、nginx配置文件以及虚拟主机配置文件

vim ./install/tasks/copy.yml
  - name: Copy Nginx Software To Redhat Client
    copy: src=nginx-` nginx_version `.tar.gz dest=/tmp/nginx-` nginx_version `.tar.gz owner=root group=root
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Uncompression Nginx Software To Redhat Client
    shell: tar zxf /tmp/nginx-` nginx_version `.tar.gz -C /usr/local/
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Copy Nginx Start Script To Redhat Client
    template: src=nginx dest=/etc/init.d/nginx owner=root group=root mode=0755
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Copy Nginx Config To Redhat Client
    template: src=nginx.conf dest=/usr/local/nginx-` nginx_version `/conf/ owner=root group=root mode=0644
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Copy Nginx Vhost Config to RedHat Client
    template: src=vhost.conf dest=/usr/local/nginx-` nginx_version `/conf/vhost/ owner=root group=root mode=0644
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6


说明： 首先把压缩包拷贝到/tmp/目录下，然后解压到/usr/local/下，再拷贝启动脚本到/etc/init.d/下，再拷贝nginx.conf以及vhost.conf

vim ./install/tasks/install.yml
  - name: Create Nginx User In Redhat Client
    user: name=` nginx_user ` state=present createhome=no shell=/sbin/nologin
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Create Nginx Dir
    file: dest=` nginx_web_dir `/` item ` state=directory
    with_items:
      - vhost
      - logs
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Modify Nginx Dir Permission In Redhat Client
    file: path=` item ` owner=` nginx_user ` group=` nginx_user ` mode=0755
    with_items:
      - "` nginx_web_dir `"
      - /usr/local/nginx-` nginx_version `
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Create Index Html To Redhat Client
    template: src=index.html dest=` nginx_web_dir `/vhost/index.html owner=` nginx_user ` group=` nginx_user ` mode=0644
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Install Check Script In Redhat Client
    template: src=index.php dest=` nginx_web_dir `/vhost/ owner=` nginx_user ` group=` nginx_user ` mode=0644
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Start Nginx Service In Redhat Client
    service: name=nginx state=restarted
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Add Boot Start Nginx Service In Redhat Client
    shell: chkconfig --level 345 nginx on
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6

vim ./install/tasks/delete.yml
  - name: Delete Nginx compression Software In Redhat Client
    shell: rm -rf /tmp/nginx-` nginx_version `.tar.gz
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6

vim ./install/tasks/main.yml
- include: copy.yml
- include: install.yml
- include: delete.yml

vim  ./delete/vars/main.yml
nginx_user: www
nginx_port: 80
nginx_web_dir: /data/webroot/nginx
nginx_version: 1.4.3

vim ./delete/tasks/main.yml
- include: delete.yml

vim ./delete/tasks/delete.yml
  - name: stop nginx service
    shell: ps -ef|grep nginx|grep -v grep|awk '{print $2}'|xargs kill -9 >>/dev/null 2>&1
    ignore_errors: yes
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Delete Nginx Boot Start Script
    shell: chkconfig --del nginx
    ignore_errors: yes
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Delete Nginx Dir
    shell: rm -rf /usr/local/nginx-` nginx_version `
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Delete Nginx User
    shell: userdel ` nginx_user `
    ignore_errors: yes
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6
  - name: Delete Nginx Service Start Script
    shell: rm -rf /etc/init.d/nginx
    when: ansible_os_family == "RedHat" and ansible_distribution_version|int >=6

cd ../
vim install.yml
---
- hosts: testhost
  remote_user: root
  gather_facts: True
  roles:
    - common
    - install

vim delete.yml
---
- hosts: testhost
  remote_user: root
  gather_facts: True
  roles:
    - delete

安装nginx:  ansible-playbook  install.yml
删除nginx: ansible-playbook  delete.yml


下载整个样例库   
git clone git://github.com/dl528888/ansible-examples.git

git命令，需要yum先安装一下： yum install -y git