折腾：
【已解决】Mac中安装并试用Fabric
期间，去运行fabric试试，结果出错：
➜ ~ vi fabfile.py
➜ ~ ll
total 736
drwxr-xr-x 2 crifan staff 64B 1 26 2018 AnacondaProjects
drwx------ 10 crifan staff 320B 5 25 14:24 Applications
drwx------@ 4 crifan staff 128B 4 26 17:36 Applications (Parallels)
drwx------@ 10 crifan staff 320B 5 25 14:24 Desktop
drwx------@ 33 crifan staff 1.0K 8 16 10:10 Documents
drwx------+ 88 crifan staff 2.8K 8 16 10:05 Downloads
drwxr-xr-x 3 crifan staff 96B 11 12 2017 GitBook
drwxr-xr-x 5 crifan staff 160B 6 8 2017 HBuilder
drwxr-xr-x 4 crifan staff 128B 8 13 2016 HBuilderProjects
drwx------@ 100 crifan staff 3.1K 6 19 14:07 Library
drwx------+ 12 crifan staff 384B 3 28 10:24 Movies
drwx------+ 10 crifan staff 320B 12 23 2017 Music
drwx------+ 287 crifan staff 9.0K 4 6 21:51 Pictures
drwxr-xr-x+ 5 crifan staff 160B 9 18 2015 Public
drwxr-xr-x+ 3 crifan staff 96B 8 23 2017 Sites
drwxr-xr-x 23 crifan staff 736B 1 27 2018 anaconda2
drwxr-xr-x 4 crifan staff 128B 7 26 2016 bin
drwxr-xr-x 9 crifan staff 288B 9 11 2017 dev
-rw-r--r-- 1 crifan staff 1.7K 5 18 17:39 dump.rdb
-rw-r--r-- 1 crifan staff 39B 8 16 10:57 fabfile.py
-rw-r--r-- 1 crifan staff 334K 9 18 2015 ishot-1.png
-rw-r--r-- 1 crifan staff 19K 1 16 2018 jmeter.log
-rw-r--r--@ 1 crifan staff 1.7K 2 7 2017 runningfast_aws_production.pem
drwxr-xr-x 2 crifan staff 64B 9 26 2017 tmp
drwxr-xr-x 3 crifan staff 96B 11 14 2015 微云同步盘
➜ ~ fab hello
No idea what 'hello' is!
➜ ~ cat fabfile.py
def hello():
print("Hello world!")
➜ ~ fab hello
No idea what 'hello' is!所以搜：
fabric No idea what ‘hello’ is!
➜ ~ fab --list No tasks found in collection 'fabfile'!
通过之前：
【已解决】Mac中安装并试用Fabric
的：
➜ ~ which fab /Users/crifan/Library/Python/2.7/bin/fab ➜ ~ fab --version Fabric 2.3.1 Paramiko 2.4.1 Invoke 1.1.1
知道了此处的fabric版本是2.3.1，
而上面这些教程看起来都是1.x的版本的老教程？
估计和2.x的版本不兼容
去找新版教程
回到命令行试试制定fabfile的文件名：
➜ ~ fab --help Usage: fab [--core-opts] task1 [--task1-opts] ... taskN [--taskN-opts] Core options: --complete Print tab-completion candidates for given parse remainder. --hide=STRING Set default value of run()'s 'hide' kwarg. --no-dedupe Disable task deduplication. --prompt-for-login-password Request an upfront SSH-auth password prompt. --prompt-for-passphrase Request an upfront SSH key passphrase prompt. --prompt-for-sudo-password Prompt user at start of session for the sudo.password config value. --write-pyc Enable creation of .pyc files. -c STRING, --collection=STRING Specify collection name to load. -d, --debug Enable debug output. -D INT, --list-depth=INT When listing tasks, only show the first INT levels. -e, --echo Echo executed commands before running. -f STRING, --config=STRING Runtime configuration file to use. -F STRING, --list-format=STRING Change the display format used when listing tasks. Should be one of: flat (default), nested, json. -h [STRING], --help[=STRING] Show core or per-task help and exit. -H STRING, --hosts=STRING Comma-separated host name(s) to execute tasks against. -i, --identity Path to runtime SSH identity (key) file. May be given multiple times. -l [STRING], --list[=STRING] List available tasks, optionally limited to a namespace. -p, --pty Use a pty when executing shell commands. -r STRING, --search-root=STRING Change root directory used for finding task modules. -S STRING, --ssh-config=STRING Path to runtime SSH config file. -V, --version Show version and exit. -w, --warn-only Warn, instead of failing, when shell commands fail. ➜ ~ fab -f fabfile.py hello No idea what 'hello' is! ➜ ~ fab --config=fabfile.py hello No idea what 'hello' is!
问题依旧。
参考最新官网去运行，也出错：
【已解决】fabric的Connection出错：paramiko.ssh_exception.AuthenticationException: Authentication failed
然后就可以继续操作了：
➜ ~ python
Python 2.7.10 (default, Oct 6 2017, 22:29:07)
[GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> from fabric import Connection
>>> c = Connection(host='47.x.x.x', user='username')
>>> result = c.run('uname -s')
Linux
>>> result.stdout.strip() == 'Linux'
True
>>> result.exited
0
>>> result.ok
True
>>>
result.command
'uname -s'
>>> result.connection
<Connection host=47.x.x.x user=
username
>
>>> result.connection.host
'47.x.x.x'
>>>另外也看到了：
->
中提到了：
Fabric 2+版本和Fabric 1相比：
相当于完全重新实现了
很多（之前组织的不够好的）功能，被废弃或者重新组织了
“* Command-line parser overhauled to allow for regular GNU/POSIX style flags and options on a per-task basis (no more fab mytask:weird=custom,arg=format);”
-》导致了此处的：
Fabric 1中的
fab hello
现在也不支持了。
而想要在Fabrci 2+的新版本中实现类似于Fabric 1的hello world的例子，则需要再去研究看看
参考：
而
中也提到了：
对于（此处hello world这种）和远程remote服务器没关系的，往往都是调用invoke实现的
而Invoke本身主要就是处理：命令行中的参数导入，任务管理，shell命令执行等事情的
-》所以此处的Fabric 1的hello world，参考：
可以改为：
from invoke import task
@task
def hello(c):
print("Hello fabric!")
c.run("echo '--- pip show fabric ---'")
c.run("pip show fabric")
# c.run("echo '--- fab --verion ---'")
# c.run("fab --verion")
# c.run("fab -V")
# c.run("/Users/crifan/Library/Python/2.7/bin/fab --verion")结果：
➜ ~ cat fabfile.py
from invoke import task
@task
def hello(c):
print("Hello fabric!")
c.run("echo '--- pip show fabric ---'")
c.run("pip show fabric")
# c.run("echo '--- fab --verion ---'")
# c.run("fab --verion")
# c.run("fab -V")
# c.run("/Users/crifan/Library/Python/2.7/bin/fab --verion")% ➜ ~ fab hello
Hello fabric!
--- pip show fabric ---
Name: fabric
Version: 2.3.1
Summary: High level SSH command execution
Home-page:
http://fabfile.org
Author: Jeff Forcier
Author-email:
[email protected]
License: BSD
Location: /Users/crifan/Library/Python/2.7/lib/python/site-packages
Requires: cryptography, paramiko, invoke
Required-by:
You are using pip version 10.0.1, however version 18.0 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.【总结】
Fabric 1是老版本
新的Fabric 2+的版本，属于彻底重写了，语法和功能有很大变化
-》所以之前的Fabric 1的hello world例子失效了，要改为：
from invoke import task
@task
def hello(c):
print("Hello fabric!")
c.run("echo '--- pip show fabric ---'")
c.run("pip show fabric")即可。