Python Fabric 和 Amazon EC2 : Sudo password asked

Question

您知道在 EC2 上，没有与“ubuntu”用户关联的密码。如果我尝试运行以下几行:

fab 开发安装目录

我明白了:

[ec2-46-51-132-252.eu-west-1.compute.amazonaws.com] sudo: chown -R webadmin:webadmin/var/www [ec2-46-51-132-252.eu-west-1.compute.amazonaws.com] 登录密码:

我尝试将 shell=False 添加到 sudo 方法(根据 Can I prevent fabric from prompting me for a sudo password? )，但它没有任何改变

有什么想法吗？非常感谢!

def development():
    env.envname = 'development'
    env.user = 'ubuntu'
    env.group = 'ubuntu'
    env.chuser = 'webadmin'
    env.chgroup = 'webadmin'
    env.hosts = ['ec2-***.eu-west-1.compute.amazonaws.com']
    env.envname_abriev = 'dev'
    env.key_filename = '/home/xx/.ssh/xx.pem'

    env.postgresql_version = '9.0'

def install_dir():
    if not exists('/var/www'):
        sudo('mkdir /var/www')
    sudo('chown -R %s:%s /var/www' % (env.chuser, env.chgroup))

Answer 1

从 aws 下载(或创建) key 对文件，如下所示

创建一个名为 fabfile.py 的文件 并设置其内容如下:

from fabric.context_managers import cd
from fabric.operations import sudo
from fabric.api import run, env
import os

HOME = os.getenv('HOME')

env.user = 'ubuntu'
env.hosts = ['PUBLICDNS.ap-southeast-1.compute.amazonaws.com','ANOTHERSERVER.compute.amazonaws.com'] #can add multiple instances
env.key_filename = [
'%s/<your-keypair-file>.pem'%HOME
     ] #assuming keypair file is located in HOME

#example code we want to run on remote machine
def update():
    with cd('/var/www'):
            sudo('svn update')
                 with cd ('/var/www/cache'):
                       run('rm -rf *')
    sudo('service lighttpd restart')

要运行该文件，请在终端中键入 fab update。