目錄

(一)練習(xí)一

1.新建一個(gè)role——app

2.創(chuàng)建文件

3.刪除之前安裝的httpd服務(wù)和apache用戶?

4.準(zhǔn)備tasks任務(wù)

(1)創(chuàng)建組group.yml

(2)創(chuàng)建用戶user.yml

(3)安裝程序yum.yml

(4)修改模板httpd.conf.j2

(5)編寫templ.yml

(6)編寫start.yml

(7)編寫copyfile.yml

(8)定義順序main.yml?

5.準(zhǔn)備變量文件vars

(1)編寫變量腳本——main.yml

6.準(zhǔn)備觸發(fā)器handlers

(1)編寫腳本main.yml

7.編寫playbook腳本調(diào)度任務(wù)

8.角色app目錄結(jié)構(gòu)

9.執(zhí)行腳本

10.檢查結(jié)果

(二)練習(xí)二——使用運(yùn)算符//，設(shè)置緩存大小

1.準(zhǔn)備工作

2.修改node141機(jī)器的內(nèi)存

(1)node141現(xiàn)在的內(nèi)存?

(2)修改node141的內(nèi)存

(3)修改node141后內(nèi)存

(4)查看node142的內(nèi)存?

3.編輯配置文件?

4.準(zhǔn)備tasks任務(wù)

(1)編寫yum.yml

(2)編寫start.yml

(3)編寫templ.yml?

(4)編寫main.yml

5.角色memcached目錄結(jié)構(gòu)?

6.編寫playbook腳本

7.檢查并執(zhí)行playbook腳本

8.腳本執(zhí)行結(jié)果

(三)推薦資料?

---

(一)練習(xí)一

1.新建一個(gè)role——app

[root@ansible145 ansible]# cd roles/[root@ansible145 roles]# rm -rf app/[root@ansible145 roles]# mkdir app[root@ansible145 roles]# cd app/

2.創(chuàng)建文件

[root@ansible145 app]# mkdir tasks templates vars handlers files[root@ansible145 app]# tree
.
├── files
├── handlers
├── tasks
├── templates
└── vars5 directories, 0 files

3.刪除之前安裝的httpd服務(wù)和apache用戶?

ansible all -m shell -a 'rm -rf /data/*'ansible all -m shell -a 'userdel -r apache'ansible all -m shell -a 'yum -y remove httpd'ansible all -m shell -a 'rpm -q httpd'

4.準(zhǔn)備tasks任務(wù)

(1)創(chuàng)建組group.yml

- name: create groupgroup: name=app system=yes gid=123

(2)創(chuàng)建用戶user.yml

- name: create useruser: name=app system=yes shell=/sbin/nologin uid=123

(3)安裝程序yum.yml

- name: install packageyum: name=httpd

(4)修改模板httpd.conf.j2

[root@ansible145 tasks]# cp /etc/httpd/conf/httpd.conf ../templates/httpd.conf.j2[root@ansible145 tasks]# vim ../templates/httpd.conf.j241 #Listen 12.34.56.78:80
42 Listen {{ ansible_processor_vcpus*10 }}
43 #
44 # Dynamic Shared Object (DSO) Support64 #
65 User {{ username }}
66 Group {{ groupname }}
67 
68 # 'Main' server configuration

(5)編寫templ.yml

- name: copy conftemplate: src=httpd.conf.j2 dest=/etc/httpd/conf/httpd.confnotify: restart service

(6)編寫start.yml

- name: start serviceservice: name=httpd state=started enabled=yes

(7)編寫copyfile.yml

- name: copy confcopy: src=vhosts.conf dest=/etc/httpd/conf.d/ owner=app

(8)定義順序main.yml?

- include: group.yml
- include: user.yml
- include: yum.yml
- include: templ.yml
- include: copyfile.yml
- include: start.yml

5.準(zhǔn)備變量文件vars

(1)編寫變量腳本——main.yml

[root@ansible145 vars]# vim main.ymlusername: app
groupname: app

6.準(zhǔn)備觸發(fā)器handlers

(1)編寫腳本main.yml

[root@ansible145 app]# vim handlers/main.yml- name: restart serviceservice: name=httpd state=restarted

7.編寫playbook腳本調(diào)度任務(wù)

[root@ansible145 ansible]# vim app_role.yml- hosts: websrvsremote_user: rootroles:- app

8.角色app目錄結(jié)構(gòu)

9.執(zhí)行腳本

[root@ansible145 ansible]# ansible-playbook app_role.yml

10.檢查結(jié)果

[root@node141 ~]# ss -ntl
users:(("httpd",pid=10792,fd=4),("httpd",pid=10791,fd=4),("httpd",pid=10790,fd=4),("httpd",pid=10789,fd=4),("httpd",pid=10788,fd=4),("httpd",pid=10787,fd=4))[root@node141 ~]# getent passwd app
app:x:123:100::/home/app:/sbin/nologin[root@node141 ~]# getent group app
app:x:123:[root@node141 ~]# ps aux | grep app
app       10788  0.0  0.1 221948  2968 ?        S    12:01   0:00 /usr/sbin/httpd -DFOREGROUND
app       10789  0.0  0.1 221948  2968 ?        S    12:01   0:00 /usr/sbin/httpd -DFOREGROUND
app       10790  0.0  0.1 221948  2968 ?        S    12:01   0:00 /usr/sbin/httpd -DFOREGROUND
app       10791  0.0  0.1 221948  2968 ?        S    12:01   0:00 /usr/sbin/httpd -DFOREGROUND
app       10792  0.0  0.1 221948  2968 ?        S    12:01   0:00 /usr/sbin/httpd -DFOREGROUND
root      10850  0.0  0.0 112660   964 pts/1    S+   12:08   0:00 grep --color=auto app

(二)練習(xí)二——使用運(yùn)算符//，設(shè)置緩存大小

要求每臺(tái)被控機(jī)memcached的緩存空間為物理內(nèi)存的1/4

1.準(zhǔn)備工作

[root@ansible145 roles]# cd memcached/[root@ansible145 memcached]# mkdir tasks templates[root@ansible145 memcached]# yum install -y memcached[root@ansible145 memcached]# cat /etc/sysconfig/memcached 
PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="64"
OPTIONS=""

2.修改node141機(jī)器的內(nèi)存

(1)node141現(xiàn)在的內(nèi)存?

(2)修改node141的內(nèi)存

(3)修改node141后內(nèi)存

(4)查看node142的內(nèi)存?

3.編輯配置文件?

[root@ansible145 memcached]# cp /etc/sysconfig/memcached templates/memcached.j2[root@ansible145 memcached]# vim templates/memcached.j2 PORT="11211"
USER="memcached"
MAXCONN="1024"
CACHESIZE="{{ ansible_memtotal_mb//4 }}"
OPTIONS=""

4.準(zhǔn)備tasks任務(wù)

(1)編寫yum.yml

- name: install packageyum: name=memcached

(2)編寫start.yml

- name: start serviceservice: name=memcached state=started enabled=yes

(3)編寫templ.yml?

- name: copy conftemplate: src=memcached.j2 dest=/etc/sysconfig/memcached

(4)編寫main.yml

- include: yum.yml
- include: templ.yml
- include: start.yml

5.角色memcached目錄結(jié)構(gòu)?

6.編寫playbook腳本

[root@ansible145 ansible]# vim memcached_role.yml- hosts: websrvsremote_user: rootroles:- memcached

7.檢查并執(zhí)行playbook腳本

[root@ansible145 ansible]# ansible-playbook -C memcached_role.yml[root@ansible145 ansible]# ansible-playbook memcached_role.yml

8.腳本執(zhí)行結(jié)果

(三)推薦資料?

http://galaxy.ansible.com

https://galaxy.ansible.com/explore#/

http://github.com/

http://ansible.com.cn/

https://github.com/ansible/ansible

https://github.com/ansible/ansible-examples