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~