ansible基础-ansible角色的使用

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　作者：尹正杰 

版权声明：原创作品，谢绝转载！否则将追究法律责任。

　　我们建议把多个节点都会用到的功能将其定义模块，然后谁要用到该模块就直接调用即可！而在ansible中它有一个特有的名称，即角色。

一.角色相关概念

1>.每个角色都是以特定的层级目录结构进行组织

    我们知道ansible可以自定义模块，便于自己或他人调用，它也有一个特有的名称叫做角色。每个角色对应的服务可能不太一样，比如mysql，httpd，nginx，memcached。虽然每个角色（模块）的功能不一样，但是他们都以特定的目录结构进行组织，相关说明如下所述：

files:

    存放由copy或script模块等调用的文件。

templates：

    template模块查找所需要模板文件的目录。

tasks：

    用于定义任务，至少应该包含一个名为main.yml的文件（类似于java和go等编译性语言，用于指定程序的入口），其他的文件需要在此文件中通过include进行包含。

handlers：

    定义处理器，至少应该包含一个名为main.yml的文件，其他的文件需要在此文件中通过include进行包含。

vars：

    定义变量，至少应该包含一个名为main.yml的文件，其他的文件需要在此文件中通过include进行包含。

meta：

    定义元数据，至少应该包含一个名为main.yml的文件，定义当前角色的特殊设定及其依赖关系，其他的文件需要在此文件中通过include进行包含。

default：

    设定模式变量时使用此目录中的main.yml文件。

2>.playbook调用角色方法

在playbook调用角色方法1：

- hosts: web

  remote_user: root

  roles:

  - mysql

  - memcached

  - nginx

在playbook调用角色方法2：传递变量给角色

- hosts: web

  remote_user: root

  roles:

  - mysql

  - memcached

  - nginx

3>.ansible默认存放路径

[root@node101.yinzhengjie.org.cn ~]#

[root@node101.yinzhengjie.org.cn ~]# grep roles_path /etc/ansible/ansible.cfg

roles_path    = /etc/ansible/roles:/usr/share/ansible/roles

[root@node101.yinzhengjie.org.cn ~]#

[root@node101.yinzhengjie.org.cn ~]#

二.角色实战案例一

1>.创建初始化目录（所有目录不一定都必须存在，如果用不到对应的功能咱们也可以不创建）

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# mkdir -pv ./{nginx,tomcat,redis,memcached}/{files,templates,tasks,handlers,vars,meta,default}

mkdir: created directory ‘./nginx’

mkdir: created directory ‘./nginx/files’

mkdir: created directory ‘./nginx/templates’

mkdir: created directory ‘./nginx/tasks’

mkdir: created directory ‘./nginx/handlers’

mkdir: created directory ‘./nginx/vars’

mkdir: created directory ‘./nginx/meta’

mkdir: created directory ‘./nginx/default’

mkdir: created directory ‘./tomcat’

mkdir: created directory ‘./tomcat/files’

mkdir: created directory ‘./tomcat/templates’

mkdir: created directory ‘./tomcat/tasks’

mkdir: created directory ‘./tomcat/handlers’

mkdir: created directory ‘./tomcat/vars’

mkdir: created directory ‘./tomcat/meta’

mkdir: created directory ‘./tomcat/default’

mkdir: created directory ‘./redis’

mkdir: created directory ‘./redis/files’

mkdir: created directory ‘./redis/templates’

mkdir: created directory ‘./redis/tasks’

mkdir: created directory ‘./redis/handlers’

mkdir: created directory ‘./redis/vars’

mkdir: created directory ‘./redis/meta’

mkdir: created directory ‘./redis/default’

mkdir: created directory ‘./memcached’

mkdir: created directory ‘./memcached/files’

mkdir: created directory ‘./memcached/templates’

mkdir: created directory ‘./memcached/tasks’

mkdir: created directory ‘./memcached/handlers’

mkdir: created directory ‘./memcached/vars’

mkdir: created directory ‘./memcached/meta’

mkdir: created directory ‘./memcached/default’

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# tree .

.

├── memcached

│   ├── default

│   ├── files

│   ├── handlers

│   ├── meta

│   ├── tasks

│   ├── templates

│   └── vars

├── nginx

│   ├── default

│   ├── files

│   ├── handlers

│   ├── meta

│   ├── tasks

│   ├── templates

│   └── vars

├── redis

│   ├── default

│   ├── files

│   ├── handlers

│   ├── meta

│   ├── tasks

│   ├── templates

│   └── vars

└── tomcat

    ├── default

    ├── files

    ├── handlers

    ├── meta

    ├── tasks

    ├── templates

    └── vars

 directories,  files

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# mkdir -pv ./{nginx,tomcat,redis,memcached}/{files,templates,tasks,handlers,vars,meta,default}

2>.编写nginx角色

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# ll

total

drwxr-xr-x.  root root  Mar   : memcached

drwxr-xr-x.  root root  Mar   : nginx

drwxr-xr-x.  root root  Mar   : redis

drwxr-xr-x.  root root  Mar   : tomcat

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# tree nginx/

nginx/

├── default

├── files

│   └── index.html

├── handlers

│   └── main.yml

├── meta

├── tasks

│   └── main.yml

├── templates

│   └── server.conf.j2

└── vars

    └── main.yml

 directories,  files

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# 
[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/files/index.html

<h1>尹正杰到此一游</h1>

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/files/index.html

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/handlers/main.yml

- name: reload nginx

  service: name=nginx state=reloaded

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/handlers/main.yml

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/tasks/main.yml

- name: install epel-release package

  yum: name=epel-release state=installed

- name: install nginx package

  yum: name=nginx state=installed

- name: create doc root

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

- name: install home page

  copy: src=index.html dest={{ docroot }}/

- name: install configure file

  template: src=server.conf.j2 dest=/etc/nginx/conf.d/server.conf

  notify: reload nginx

- name: start nginx service

  service: name=nginx enabled=true state=started

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/tasks/main.yml

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/templates/server.conf.j2

server {

    listen ;

    server_name {{ ansible_fqdn }} {{ ansible_hostname }};

    location / {

        root {{ docroot }};

        index index.jsp index.html;

    }

}

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/templates/server.conf.j2

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/vars/main.yml

docroot: /yinzhengjie/data/nginx

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cat nginx/vars/main.yml

3>.编写剧本调用nginx角色

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# cat nginx.yaml

- hosts: all

  remote_user: root

  roles:

  - nginx

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook --syntax-check nginx.yaml 

playbook: nginx.yaml

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# cat nginx.yaml

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook --check nginx.yaml 

PLAY [all] **************************************************************************************************************************************************

TASK [Gathering Facts] **************************************************************************************************************************************

ok: [node102.yinzhengjie.org.cn]

ok: [node101.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

TASK [nginx : install epel-release package] *****************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

TASK [nginx : install nginx package] ************************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

changed: [node103.yinzhengjie.org.cn]

TASK [nginx : create doc root] ******************************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

changed: [node103.yinzhengjie.org.cn]

TASK [nginx : install home page] ****************************************************************************************************************************

changed: [node103.yinzhengjie.org.cn]

changed: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

TASK [nginx : install configure file] ***********************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

changed: [node103.yinzhengjie.org.cn]

TASK [nginx : start nginx service] **************************************************************************************************************************

changed: [node103.yinzhengjie.org.cn]

changed: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

RUNNING HANDLER [nginx : reload nginx] **********************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

changed: [node103.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

PLAY RECAP **************************************************************************************************************************************************

node101.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=

node102.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=

node103.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=   

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook --check nginx.yaml

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook  nginx.yaml 

PLAY [all] ************************************************************************************************************************************************************************

TASK [Gathering Facts] ************************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install epel-release package] ***************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install nginx package] **********************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

TASK [nginx : create doc root] ****************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

TASK [nginx : install home page] **************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

TASK [nginx : install configure file] *********************************************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

changed: [node103.yinzhengjie.org.cn]

TASK [nginx : start nginx service] ************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node103.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

RUNNING HANDLER [nginx : reload nginx] ********************************************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

changed: [node103.yinzhengjie.org.cn]

PLAY RECAP ************************************************************************************************************************************************************************

node101.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=

node102.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=

node103.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=   

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook nginx.yaml　　　　　　　　　　　　　　　　　　　　　　　#运行剧本，注意，安装nginx时请务必关闭掉httpd服务，否则可能会导致nginx服务启动不了！

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible all -m shell -a 'ss -ntl | grep 7000'

node101.yinzhengjie.org.cn | SUCCESS | rc= >>

LISTEN                     *:                     *:*                  

node103.yinzhengjie.org.cn | SUCCESS | rc= >>

LISTEN                     *:                     *:*                  

node102.yinzhengjie.org.cn | SUCCESS | rc= >>

LISTEN                     *:                     *:*                  

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible all -m shell -a 'cat /etc/nginx/conf.d/server.conf'

node101.yinzhengjie.org.cn | SUCCESS | rc= >>

server {

    listen ;

    server_name node101.yinzhengjie.org.cn node101;

    location / {

        root /yinzhengjie/data/nginx;

        index index.jsp index.html;

    }

}

node103.yinzhengjie.org.cn | SUCCESS | rc= >>

server {

    listen ;

    server_name node103.yinzhengjie.org.cn node103;

    location / {

        root /yinzhengjie/data/nginx;

        index index.jsp index.html;

    }

}

node102.yinzhengjie.org.cn | SUCCESS | rc= >>

server {

    listen ;

    server_name node102.yinzhengjie.org.cn node102;

    location / {

        root /yinzhengjie/data/nginx;

        index index.jsp index.html;

    }

}

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible all -m shell -a 'ss -ntl | grep 7000'　　　　　　　　　　　　#检查nginx服务是否正常启动

[root@node102.yinzhengjie.org.cn ~]#

[root@node102.yinzhengjie.org.cn ~]# curl http://node101.yinzhengjie.org.cn:7000/

<h1>尹正杰到此一游</h1>

[root@node102.yinzhengjie.org.cn ~]#

[root@node102.yinzhengjie.org.cn ~]#

[root@node102.yinzhengjie.org.cn ~]# curl http://node102.yinzhengjie.org.cn:7000/

<h1>尹正杰到此一游</h1>

[root@node102.yinzhengjie.org.cn ~]#

[root@node102.yinzhengjie.org.cn ~]# curl http://node103.yinzhengjie.org.cn:7000/

<h1>尹正杰到此一游</h1>

[root@node102.yinzhengjie.org.cn ~]#

[root@node102.yinzhengjie.org.cn ~]#

三.角色实战案例二

1>.备份之前的配置

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# ll

total

drwxr-xr-x.  root root  Mar   : memcached

drwxr-xr-x.  root root  Mar   : nginx

drwxr-xr-x.  root root  Mar   : redis

drwxr-xr-x.  root root  Mar   : tomcat

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cp -a nginx/ /root/

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# cp -a nginx/ /root/

2>. 编写nginx角色

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# pwd

/etc/ansible/roles/nginx

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# ll

total

drwxr-xr-x.  root root   Mar   : default

drwxr-xr-x.  root root  Mar   : files

drwxr-xr-x.  root root  Mar   : handlers

drwxr-xr-x.  root root   Mar   : meta

drwxr-xr-x.  root root  Mar   : tasks

drwxr-xr-x.  root root  Mar   : templates

drwxr-xr-x.  root root  Mar   : vars

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# tree .

.

├── default

├── files

│   └── index.html

├── handlers

│   └── main.yml

├── meta

├── tasks

│   └── main.yml

├── templates

│   ├── proxy.conf.j2

│   └── server.conf.j2

└── vars

    └── main.yml

 directories,  files

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# 
[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat files/index.html

<h1>尹正杰到此一游</h1>

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat files/index.html

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat handlers/main.yml

- name: reload nginx

  service: name=nginx state=reloaded

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat handlers/main.yml

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat  tasks/main.yml

- name: install epel-release package

  yum: name=epel-release state=installed

- name: install nginx package

  yum: name=nginx state=installed

- name: create doc root

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

  when: servertype == 'web'

- name: install home page

  copy: src=index.html dest={{ docroot }}/

  when: servertype == 'web'

- name: install web configure file

  template: src=server.conf.j2 dest=/etc/nginx/conf.d/server.conf

  when: servertype == 'web'

  notify: reload nginx

- name: install proxy configure file

  template: src=proxy.conf.j2 dest=/etc/nginx/conf.d/server.conf

  when: servertype == 'proxy'

  notify: reload nginx

- name: start nginx service

  service: name=nginx enabled=true state=started

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat tasks/main.yml

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat templates/proxy.conf.j2

server {

    listen ;

    server_name {{ ansible_fqdn }} {{ ansible_hostname }};

    location / {

        proxy_pass {{ backendurl }}

    }

}

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat templates/proxy.conf.j2

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat templates/server.conf.j2

server {

    listen ;

    server_name {{ ansible_fqdn }} {{ ansible_hostname }};

    location / {

        root {{ docroot }};

        index index.jsp index.html;

    }

}

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat templates/server.conf.j2

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat vars/main.yml

servertype: web

backendurl: 'http:node101.yinzhengjie.org.cn:8080/'

docroot: /yinzhengjie/data/nginx

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]#

[root@node101.yinzhengjie.org.cn /etc/ansible/roles/nginx]# cat vars/main.yml

3>.编写剧本调用nginx角色

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# cat /etc/ansible/hosts

[web]

node[:].yinzhengjie.org.cn 

[tomcat]

node101.yinzhengjie.org.cn

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# cat nginx-v2.yaml

- hosts: tomcat

  remote_user: root

  roles:

  - { role: nginx, servertype=proxy }

- hosts: web

  remote_user: root

  roles:

  - nginx

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# cat nginx-v2.yaml

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook  --check nginx-v2.yaml

PLAY [tomcat] *********************************************************************************************************************************************************************

TASK [Gathering Facts] ************************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install epel-release package] ***************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install nginx package] **********************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : create doc root] ****************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install home page] **************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install web configure file] *****************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install proxy configure file] ***************************************************************************************************************************************

skipping: [node101.yinzhengjie.org.cn]

TASK [nginx : start nginx service] ************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

PLAY [web] ************************************************************************************************************************************************************************

TASK [Gathering Facts] ************************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install epel-release package] ***************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install nginx package] **********************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : create doc root] ****************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install home page] **************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install web configure file] *****************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install proxy configure file] ***************************************************************************************************************************************

skipping: [node101.yinzhengjie.org.cn]

skipping: [node102.yinzhengjie.org.cn]

TASK [nginx : start nginx service] ************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

PLAY RECAP ************************************************************************************************************************************************************************

node101.yinzhengjie.org.cn : ok=   changed=    unreachable=    failed=

node102.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=   

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook --check nginx-v2.yaml

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook   nginx-v2.yaml

PLAY [tomcat] *********************************************************************************************************************************************************************

TASK [Gathering Facts] ************************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install epel-release package] ***************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install nginx package] **********************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : create doc root] ****************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install home page] **************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

TASK [nginx : install web configure file] *****************************************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

TASK [nginx : install proxy configure file] ***************************************************************************************************************************************

skipping: [node101.yinzhengjie.org.cn]

TASK [nginx : start nginx service] ************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

RUNNING HANDLER [nginx : reload nginx] ********************************************************************************************************************************************

changed: [node101.yinzhengjie.org.cn]

PLAY [web] ************************************************************************************************************************************************************************

TASK [Gathering Facts] ************************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install epel-release package] ***************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install nginx package] **********************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : create doc root] ****************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install home page] **************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

TASK [nginx : install web configure file] *****************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

changed: [node102.yinzhengjie.org.cn]

TASK [nginx : install proxy configure file] ***************************************************************************************************************************************

skipping: [node101.yinzhengjie.org.cn]

skipping: [node102.yinzhengjie.org.cn]

TASK [nginx : start nginx service] ************************************************************************************************************************************************

ok: [node101.yinzhengjie.org.cn]

ok: [node102.yinzhengjie.org.cn]

RUNNING HANDLER [nginx : reload nginx] ********************************************************************************************************************************************

changed: [node102.yinzhengjie.org.cn]

PLAY RECAP ************************************************************************************************************************************************************************

node101.yinzhengjie.org.cn : ok=   changed=    unreachable=    failed=

node102.yinzhengjie.org.cn : ok=    changed=    unreachable=    failed=   

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook nginx-v2.yaml

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible all -m shell -a 'cat /etc/nginx/conf.d/server.conf'

node101.yinzhengjie.org.cn | SUCCESS | rc= >>

server {

    listen ;

    server_name node101.yinzhengjie.org.cn node101;

    location / {

        root /yinzhengjie/data/nginx;

        index index.jsp index.html;

    }

}

node103.yinzhengjie.org.cn | FAILED | rc= >>

cat: /etc/nginx/conf.d/server.conf: No such file or directorynon-zero return code

node102.yinzhengjie.org.cn | SUCCESS | rc= >>

server {

    listen ;

    server_name node102.yinzhengjie.org.cn node102;

    location / {

        root /yinzhengjie/data/nginx;

        index index.jsp index.html;

    }

}

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# cat /etc/ansible/hosts

node[:].yinzhengjie.org.cn

[web]

node[:].yinzhengjie.org.cn 

[tomcat]

node101.yinzhengjie.org.cn

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible all -m shell -a 'cat /etc/nginx/conf.d/server.conf'

　　角色的使用就介绍到这里了，其实我们可以用角色可以干很多我们想要干的事情，比如：设定基于msm的tomcat集群的角色，为tomcat部署应用，每个节点本地使用nginx发现代理，所有节点前端有一个nginx负载均衡器等等之类的！感兴趣的小伙伴可以自行测试~

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