IT博客汇 | CentOS/Ubunt安装配置集群管理工具Ansible

CentOS/Ubunt安装配置集群管理工具Ansible

bear发表于 2016-08-03 09:40:18

CentOS/Ubunt安装配置集群管理工具Ansible的过程, 记录一下.

1, 安装

yum install ansible    #CentOS6请先安装epel

#Ubuntu的安装(从Ubuntu官方的源里安装的大概是1.4的版本,非常古老,这里我们启用其它的源)
sudo apt-get install software-properties-common
sudo apt-add-repository ppa:ansible/ansible
sudo apt-get update
sudo apt-get install ansible

2, 配置

vim ansible.cfg    #主配置文件, 修改如下选项
host_key_checking = False
#ask_sudo_pass = True      //每次在本机执行ansible命令是否询问ssh密码
#ask_pass      = True      //每次在本机执行ansible命令时是否询问sudo密码
log_path = /var/log/ansible.log
executable = /bin/bash
remote_tmp     = /tmp/.ansible/tmp

#如果远程调用的命令需要sudo命令提权,需要开启如下几项
#以下几项在ansible1.9版本以后才有,请先运行ansible --version确定下版本
[privilege_escalation]
become=True
become_method=sudo
become_user=root
become_ask_pass=False

需要注意的是,ansible的配置文件并非只有这一个,ansible执行的时候会按照以下顺序查找配置项
ANSIBLE_CONFIG(环境变量)
ansible.cfg(位于当前目录中)
~/.ansible.cfg(位于家目录中)
/etc/ansible/ansible.cfg

3, 写入主机列表

vim /etc/ansible/hosts
[dev]
192.168.32.39 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.32.41 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.32.42 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.32.44 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.32.144 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD

[conv]
192.168.34.20 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.22 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.23 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.24 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.25 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.26 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.27 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.34 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.35 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.36 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.37 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.38 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD
192.168.34.124 ansible_ssh_user=USERNAME ansible_ssh_pass=PASSWORD ansible_sudo_pass=PASSWORD

4, 测试

然后可以调用一下ansible命令测试一下
ansible dev -a 'uptime'
ansible dev -a 'sudo uptime'

可能遇到的错误：
Using a SSH password instead of a key is not possible because Host Key checking is enabled and sshpass does not support this. Please add this host’s fingerprint to your known_hosts file to manage this host.

解决办法：
修改ansible.cfg, 找到host_key_checking项, 改成False, 或者在ssh_args配置项后面添加”-o StrictHostKeyChecking＝no”.

可能遇到的错误：
failed to resolve remote temporary directory from ansible-tmp-1470207846.63-257290492417275: `( umask 77 && mkdir -p “` echo $HOME/.ansible/tmp/ansible-tmp-XXXXXXXXX `” )` returned empty string

解决办法:
使用本机的ssh登陆到第一个出错的server上再退出就好了.

参考文档：
http://www.tuicool.com/articles/AZVJ3qQ
http://www.361way.com/ansible-cfg/4401.html
http://www.361way.com/ansible-su/4882.html