ansible 批量安装yum包

1、首先安装一下ansible

yum install ansible

2、修改一下ansible的参数以防ssh过去的时候需要首次判断yes  或者no 

sed -i 's/#host_key_checking = False/host_key_checking = False/g' /etc/ansible/ansible.cfg

3、新建一个工作目录，写一个hosts文件 用来配置hosts

[root@192 et]# cat hosts
[own_host]
web.ansible.bd.com

4、新建一个screen.yml文件，先比如安装一个screen，内容如下

- name: Install screen
  hosts: own_host
  tasks:
    - name: start install screen
      yum:
        name: screen
        state: installed

5、执行安装之前要做好ssh免密

ssh-keygen -t rsa

ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.0.100

[root@web ~]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:HC81CyaFnd4u2uxEhIg6CEISxw+XN/t4hP1vxfkbohY root@web.ansible.bd.com
The key's randomart image is:
+---[RSA 2048]----+
|o+.  . o..       |
|o.o.o.+oo        |
|o .+..o*=.o      |
|+.  . o=+=.o     |
|+      +Soo  . . |
| .    ..+.oE  +  |
|       =.. ..o o |
|      ..o  .+ . o|
|       .. .o   ..|
+----[SHA256]-----+
[root@web ~]#

[root@web ~]# ssh-copy-id -i ~/.ssh/id_rsa.pub 192.168.0.100
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/root/.ssh/id_rsa.pub"
The authenticity of host '192.168.0.100 (192.168.0.100)' can't be established.
ECDSA key fingerprint is SHA256:bqCO0nWIDL1xZsor1O5E819ZLoV2aE+TDOmiKNBM+sQ.
ECDSA key fingerprint is MD5:21:18:a5:32:7f:9e:0e:48:41:d7:86:21:2a:36:8a:ee.
Are you sure you want to continue connecting (yes/no)? yes
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys
root@192.168.0.100's password:

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh '192.168.0.100'"
and check to make sure that only the key(s) you wanted were added.

[root@web ~]#

6、执行批量安装

ansible-playbook -i /opt/et/hosts /opt/et/screen.yml

[root@web ~]# ansible-playbook -i /opt/et/hosts /opt/et/screen.yml

PLAY [Install screen] *********************************************************************************************************************************************************************

TASK [Gathering Facts] ********************************************************************************************************************************************************************
ok: [web.ansible.bd.com]

TASK [start install screen] ***************************************************************************************************************************************************************
changed: [web.ansible.bd.com]

PLAY RECAP ********************************************************************************************************************************************************************************
web.ansible.bd.com         : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

[root@web ~]#