2.推送单个公钥到远程机器
格式： ssh-copy-id -i ~/.ssh/id_rsa.pub username@[ip,hostname]
ssh-copy-id -i ~/.ssh/id_rsa.pub username@192.168.198.x
3.添加ansible hosts
编辑/etc/ansible/hosts,没有则创建些文件。
格式：【主机名】 【主机地址】 【主机密码】 默认是root用户来进行的
[all]
1 ansible_ssh_user="root" ansible_ssh_host=192.168.198.131 ansible_ssh_pass="123456"
2 ansible_ssh_user="root" ansible_ssh_host=192.168.198.134 ansible_ssh_pass="123456"
3 ansible_ssh_user="root" ansible_ssh_host=192.168.198.141 ansible_ssh_pass="123456"
新版的ansible(2.4) hosts有更新， 用以下方式：
[all]
192.168.198.131 ansible_user=root ansible_ssh_pass="123456"
192.168.198.141 ansible_user=root ansible_ssh_pass="123456"
192.168.198.134 ansible_user=root ansible_ssh_pass="123456"
4.批量推送公钥到远程机器
机器多的情况下，使用ssh-copy-id方法有些费时，使用ansible-playbook推送ymal，这里使用到了authoried_keys模块，可以参考 http://docs.ansible.com/authorized_key_module.html
[root@mha ansible]# ls
ansible.cfg hosts push.ssh.ymal roles
[root@mha ansible]# cat push.ssh.ymal
5.执行推送命令
ansible-playbook push.ssh.ymal
[root@mha ansible]# ansible-playbook push.ssh.ymal
PLAY [all] **
TASK [Gathering Facts] **
ok: [192.168.198.134]
ok: [192.168.198.141]
ok: [192.168.198.131]
TASK [ssh-copy] *****
ok: [192.168.198.134]
ok: [192.168.198.141]
changed: [192.168.198.131]
新增用户和创建密码
[root@nginx-proxy-01-keepalived ansible]# ansible nginx -m shell -a "useradd wsw && echo "123456"| passwd --stdin wsw"
192.168.198.131 | SUCCESS | rc=0 >>
Changing password for user wsw.
passwd: all authentication tokens updated successfully.
192.168.198.134 | SUCCESS | rc=0 >>
Changing password for user wsw.
passwd: all authentication tokens updated successfully.
192.168.198.145 | SUCCESS | rc=0 >>
Changing password for user wsw.
passwd: all authentication tokens updated successfully.
192.168.198.144 | SUCCESS | rc=0 >>
Changing password for user wsw.
passwd: all authentication tokens updated successfully.
三、检查主机组或者是单一个主机
[root@mha ansible-tower-setup-3.1.0]# ansible all -m shell -a "mysql -uroot -p123456 -e 'use test;show tables'"
192.168.198.134 | SUCCESS | rc=0 >>
Tables_in_test
t3
t4
t44
t5
tt1
192.168.198.131 | FAILED | rc=127 >>
/bin/sh: mysql: command not found
四、ansible-playbook
1、关于git pull
[root@mha ansible-for-devops]# cat git.yml
2、关于git pull紧接着checkout branch
[root@mha ansible-for-devops]# cat git.yml