安装ansible

ansible简介

什么是ansible

• 批量管理主机软件

安装ansible以及免密

• 2台，centos6或centos7
• 管理节点：192.168.72.4（A）
• 被管理节点：192.168.72.5（B）
• ansible的安装包在epel源中

在管理节点和被管理节点上安装ansible(AB)
阿里云：https://developer.aliyun.com/mirror/

在centos6上操作

[root@localhost ~]# cd /etc/yum.repos.d/
[root@localhost yum.repos.d]# rm -rf epel*
[root@localhost yum.repos.d]# yum -y install wget
[root@localhost yum.repos.d]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-6.repo
[root@localhost yum.repos.d]# yum clean all
[root@localhost yum.repos.d]# yum -y install ansible
# 1）在管理节点，生成密钥对
[root@localhost yum.repos.d]# 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:lSFZHJ76dV4U1+/Md/eIwIHUzLlpc9HYbzvDehE2/jE root@1
The key's randomart image is:
+---[RSA 2048]----+
|        .B+o + .o|
|        oo*+o o +|
|       . .=o . .o|
|        .o* .  =+|
|        So +. ===|
|         .o. o EB|
|          .. .o.%|
|            ....o|
|              .  |
+----[SHA256]-----+
# 2）将公钥文件发送到被管理节点
[root@localhost yum.repos.d]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.72.4
[root@localhost yum.repos.d]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.72.5

 

在centos7上操作

 

[root@localhost ~]# cd /etc/yum.repos.d/ 
[root@localhost yum.repos.d]# rm -rf epel* 
[root@localhost yum.repos.d]# yum -y install wget
[root@localhost yum.repos.d]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
[root@localhost yum.repos.d]# yum clean all
[root@localhost yum.repos.d]# yum -y install ansible

#也可以不用以上的下载直接安装
[root@localhost ~]# yum -y install epel-release
[root@localhost ~]# yum -y install ansible

# 1）在管理节点，生成密钥对
[root@localhost yum.repos.d]# 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:lSFZHJ76dV4U1+/Md/eIwIHUzLlpc9HYbzvDehE2/jE root@1
The key's randomart image is:
+---[RSA 2048]----+
|        .B+o + .o|
|        oo*+o o +|
|       . .=o . .o|
|        .o* .  =+|
|        So +. ===|
|         .o. o EB|
|          .. .o.%|
|            ....o|
|              .  |
+----[SHA256]-----+
# 2）将公钥文件发送到被管理节点
[root@localhost yum.repos.d]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.72.4
[root@localhost yum.repos.d]# ssh-copy-id -i /root/.ssh/id_rsa.pub root@192.168.72.5

 

在被管理节点安装apache

[root@localhost ~]# ansible myserver -a "yum -y install httpd"
[root@localhost ~]# ansible myserver -a "rpm -q httpd"

 

关闭被管理节点的防火墙和selinux

centos6

[root@localhost ~]# ansible myserver -a "service iptables stop"
[root@localhost ~]# ansible myserver -a "setenforce 0"

 

 

centos7

[root@localhost ~]# ansible myserver -a "systemctl stop firewalld"
[root@localhost ~]# ansible myserver -a "setenforce 0"

 

 

第一步：安装ansible

1. 安装epel源
2. 安装ansible
   第二步：配置ansible
3. 定义主机清单文件
4. 修改ansible的配置文件
5. 做免密认证
   第三步：使用ansible
6. 通过ansible来控制远程主机