ansible基礎-ansible角色的使用

　　　　　　　　　　　　　　ansible基礎-ansible角色的使用

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　做者：尹正傑 

版權聲明：原創做品，謝絕轉載！不然將追究法律責任。

 

　　咱們建議把多個節點都會用到的功能將其定義模塊，而後誰要用到該模塊就直接調用便可！而在ansible中它有一個特有的名稱，即角色。

 

 

一.角色相關概念

1>.每一個角色都是以特定的層級目錄結構進行組織

 咱們知道ansible能夠自定義模塊，便於本身或他人調用，它也有一個特有的名稱叫作角色。每一個角色對應的服務可能不太同樣，好比mysql，httpd，nginx，memcached。雖然每一個角色（模塊）的功能不同，可是他們都以特定的目錄結構進行組織，相關說明以下所述： files: 存放由copy或script模塊等調用的文件。 templates： template模塊查找所須要模板文件的目錄。 tasks： 用於定義任務，至少應該包含一個名爲main.yml的文件（相似於java和go等編譯性語言，用於指定程序的入口），其餘的文件須要在此文件中經過include進行包含。 handlers： 定義處理器，至少應該包含一個名爲main.yml的文件，其餘的文件須要在此文件中經過include進行包含。 vars： 定義變量，至少應該包含一個名爲main.yml的文件，其餘的文件須要在此文件中經過include進行包含。 meta： 定義元數據，至少應該包含一個名爲main.yml的文件，定義當前角色的特殊設定及其依賴關係，其餘的文件須要在此文件中經過include進行包含。 default： 設定模式變量時使用此目錄中的main.yml文件。

2>.playbook調用角色方法

在playbook調用角色方法1： - hosts: web remote_user: root roles: - mysql - memcached - nginx 在playbook調用角色方法2：傳遞變量給角色 - hosts: web remote_user: root roles: - mysql - memcached - nginx

3>.ansible默認存放路徑

[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.角色實戰案例一

1>.建立初始化目錄（全部目錄不必定都必須存在，若是用不到對應的功能我們也能夠不建立）

[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 32 directories, 0 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>.編寫nginx角色

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# [root@node101.yinzhengjie.org.cn /etc/ansible/roles]# ll total 0 drwxr-xr-x. 9 root root 97 Mar  9 07:36 memcached drwxr-xr-x. 9 root root 97 Mar  9 07:36 nginx drwxr-xr-x. 9 root root 97 Mar  9 07:36 redis drwxr-xr-x. 9 root root 97 Mar  9 07:36 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 7 directories, 5 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>尹正傑到此一遊</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 7000; 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>.編寫劇本調用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=8    changed=6    unreachable=0    failed=0 node102.yinzhengjie.org.cn : ok=8    changed=6    unreachable=0    failed=0 node103.yinzhengjie.org.cn : ok=8    changed=6    unreachable=0    failed=0 [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=8    changed=2    unreachable=0    failed=0 node102.yinzhengjie.org.cn : ok=8    changed=3    unreachable=0    failed=0 node103.yinzhengjie.org.cn : ok=8    changed=2    unreachable=0    failed=0 [root@node101.yinzhengjie.org.cn ~/ansible_workshop]#

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# ansible-playbook nginx.yaml　　　　　　　　　　　　　　　　　　　　　　　#運行劇本，注意，安裝nginx時請務必關閉掉httpd服務，不然可能會致使nginx服務啓動不了！

[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=0 >> LISTEN 0      128          *:7000                     *:* node103.yinzhengjie.org.cn | SUCCESS | rc=0 >> LISTEN 0      128          *:7000                     *:* node102.yinzhengjie.org.cn | SUCCESS | rc=0 >> LISTEN 0      128          *:7000                     *:* [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=0 >> server { listen 7000; server_name node101.yinzhengjie.org.cn node101; location / { root /yinzhengjie/data/nginx; index index.jsp index.html; } } node103.yinzhengjie.org.cn | SUCCESS | rc=0 >> server { listen 7000; server_name node103.yinzhengjie.org.cn node103; location / { root /yinzhengjie/data/nginx; index index.jsp index.html; } } node102.yinzhengjie.org.cn | SUCCESS | rc=0 >> server { listen 7000; 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'　　　　　　　　　　　　#檢查nginx服務是否正常啓動

[root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]# curl http://node101.yinzhengjie.org.cn:7000/
<h1>尹正傑到此一遊</h1> [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]# curl http://node102.yinzhengjie.org.cn:7000/
<h1>尹正傑到此一遊</h1> [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]# curl http://node103.yinzhengjie.org.cn:7000/
<h1>尹正傑到此一遊</h1> [root@node102.yinzhengjie.org.cn ~]# [root@node102.yinzhengjie.org.cn ~]#

 

三.角色實戰案例二

1>.備份以前的配置

[root@node101.yinzhengjie.org.cn /etc/ansible/roles]# ll total 0 drwxr-xr-x. 9 root root 97 Mar  9 07:36 memcached drwxr-xr-x. 9 root root 97 Mar  9 07:36 nginx drwxr-xr-x. 9 root root 97 Mar  9 07:36 redis drwxr-xr-x. 9 root root 97 Mar  9 07:36 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>. 編寫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 0 drwxr-xr-x. 2 root root  6 Mar  9 07:36 default drwxr-xr-x. 2 root root 23 Mar  9 07:55 files drwxr-xr-x. 2 root root 21 Mar  9 07:54 handlers drwxr-xr-x. 2 root root  6 Mar  9 07:36 meta drwxr-xr-x. 2 root root 21 Mar  9 09:20 tasks drwxr-xr-x. 2 root root 47 Mar  9 09:20 templates drwxr-xr-x. 2 root root 21 Mar  9 08:59 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 7 directories, 6 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>尹正傑到此一遊</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 7500; 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 7000; 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>.編寫劇本調用nginx角色

[root@node101.yinzhengjie.org.cn ~/ansible_workshop]# [root@node101.yinzhengjie.org.cn ~/ansible_workshop]# cat /etc/ansible/hosts [web] node[101:102].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=14   changed=0    unreachable=0    failed=0 node102.yinzhengjie.org.cn : ok=7    changed=0    unreachable=0    failed=0 [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=15   changed=2    unreachable=0    failed=0 node102.yinzhengjie.org.cn : ok=8    changed=2    unreachable=0    failed=0 [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=0 >> server { listen 7000; server_name node101.yinzhengjie.org.cn node101; location / { root /yinzhengjie/data/nginx; index index.jsp index.html; } } node103.yinzhengjie.org.cn | FAILED | rc=1 >>
cat: /etc/nginx/conf.d/server.conf: No such file or directorynon-zero return code node102.yinzhengjie.org.cn | SUCCESS | rc=0 >> server { listen 7000; 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[101:103].yinzhengjie.org.cn [web] node[101:102].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'

 

　　角色的使用就介紹到這裏了，其實咱們能夠用角色能夠幹不少咱們想要乾的事情，好比：設定基於msm的tomcat集羣的角色，爲tomcat部署應用，每一個節點本地使用nginx發現代理，全部節點前端有一個nginx負載均衡器等等之類的！感興趣的小夥伴能夠自行測試~