fabric初步实践

2019独角兽企业重金招聘Python工程师标准>>>

fabric作为一种强大的运维工具，可以让部署运维轻松很多，最简单的fabric使用，首先设置env.user,env.port,env.hosts,env.password,如：

#coding:utf8
from fabric.api import *
#用户名
env.user = "shikanon"
#中转ip，堡垒机
env.gateway = "10.17.35.92"
env.port = 12303
env.hosts = ["192.168.6.%d"%i for i in range(2,11)]
#密码
env.password = "shikanon_123456"

这样就配置好了集群，但通常情况下为了安全堡垒机和各机器的用户名、端口号、密码都是不同的，那么需要有针对性设置，在fabric中用env.hosts和env.password组合就可以了，不过需要注意的是原来的ip形式需要全部改为user@host:port这种形式，代码如下

#需要以user@host:port填写
env.gateway = "[email protected]:12020"
env.hosts = ["[email protected]:12020", "[email protected]:22", "[email protected]:22"]
#可以定义不同的密码
env.passwords = {
    "[email protected]:12020":"shikanon_123456",
    "[email protected]:22":"12shikanon_3456",
    "[email protected]:22":"1234shikanon_56"}
#下面是rsa免登录设置
#
def create_keygen():
    with settings(warn_only=True):
        run("rm -rf shikanon/.ssh")
    with settings(warn_only=True):
        run("mkdir -p shikanon/.ssh")
    with settings(warn_only=True):
        result = run(r"ssh-keygen -t rsa -P '' -f ~/shikanon/.ssh/id_rsa")

def get_ras_id():
    get("~/shikanon/.ssh/id_rsa.pub","./rsa/rsa_%s_id_rsa.pub"%(env.host))

@runs_once
def zip():
    local("zip -r authorized_keys.zip rsa/")

def clean():
    run("rm -rf ~/shikanon/")

def upload():
    run("rm -f authorized_keys.zip")
    put("authorized_keys.zip","~/shikanon/")
    with settings(warn_only=True):
        run("unzip ~/shikanon/authorized_keys.zip -d ~/shikanon/.ssh")
    rsa_files = run("ls ~/shikanon/.ssh/rsa/")
    for commandline in rsa_files.split("\r\n"):
        for rsa_file in commandline.split(" "):
            if rsa_file:
                print("rsa_file:",rsa_file)
                run("cat ~/shikanon/.ssh/rsa/%s >> ~/shikanon/.ssh/authorized_keys"%rsa_file)

以上是一个设置ssh免密码登陆的脚本

转载于:https://my.oschina.net/Kanonpy/blog/695074