网络运维自动化入门五：netconf client环境准备

我们使用开源的ncclient作为NETCONF Client, https://github.com/ncclient/ncclient 想了解更多请访问官方GIT。

服务器使用CNETOS7 自备python 2.7 所以只需要安装 ncclient就OK了，如果是windows请自行baidu安装python 环境与安装ncclient
安装命令： pip install ncclient
具体过程：

[root@10-57-22-228 ~]# pip install ncclient
Collecting ncclient
  Downloading ncclient-0.5.3.tar.gz (63kB)
    100% |████████████████████████████████| 71kB 459kB/s 
Requirement already satisfied: setuptools>0.6 in /usr/lib/python2.7/site-packages (from ncclient)
Collecting paramiko>=1.15.0 (from ncclient)
  Downloading paramiko-2.4.0-py2.py3-none-any.whl (192kB)
    100% |████████████████████████████████| 194kB 757kB/s 
Collecting lxml>=3.3.0 (from ncclient)
  Downloading lxml-4.1.1-cp27-cp27mu-manylinux1_x86_64.whl (5.6MB)
    100% |████████████████████████████████| 5.6MB 145kB/s 
Requirement already satisfied: six in /usr/lib/python2.7/site-packages (from ncclient)
Collecting pyasn1>=0.1.7 (from paramiko>=1.15.0->ncclient)
  Downloading pyasn1-0.4.2-py2.py3-none-any.whl (71kB)
    100% |████████████████████████████████| 71kB 623kB/s 
Collecting bcrypt>=3.1.3 (from paramiko>=1.15.0->ncclient)
  Downloading bcrypt-3.1.4-cp27-cp27mu-manylinux1_x86_64.whl (57kB)
    100% |████████████████████████████████| 61kB 599kB/s 
Collecting cryptography>=1.5 (from paramiko>=1.15.0->ncclient)
  Downloading cryptography-2.1.4-cp27-cp27mu-manylinux1_x86_64.whl (2.2MB)
    100% |████████████████████████████████| 2.2MB 225kB/s 
Collecting pynacl>=1.0.1 (from paramiko>=1.15.0->ncclient)
  Downloading PyNaCl-1.2.1-cp27-cp27mu-manylinux1_x86_64.whl (696kB)
    100% |████████████████████████████████| 706kB 377kB/s 
Collecting cffi>=1.1 (from bcrypt>=3.1.3->paramiko>=1.15.0->ncclient)
  Downloading cffi-1.11.5-cp27-cp27mu-manylinux1_x86_64.whl (407kB)
    100% |████████████████████████████████| 409kB 413kB/s 
Requirement already satisfied: idna>=2.1 in /usr/lib/python2.7/site-packages (from cryptography>=1.5->paramiko>=1.15.0->ncclient)
Collecting enum34; python_version < "3" (from cryptography>=1.5->paramiko>=1.15.0->ncclient)
  Downloading enum34-1.1.6-py2-none-any.whl
Collecting ipaddress; python_version < "3" (from cryptography>=1.5->paramiko>=1.15.0->ncclient)
  Downloading ipaddress-1.0.19.tar.gz
Collecting asn1crypto>=0.21.0 (from cryptography>=1.5->paramiko>=1.15.0->ncclient)
  Downloading asn1crypto-0.24.0-py2.py3-none-any.whl (101kB)
    100% |████████████████████████████████| 102kB 257kB/s 
Collecting pycparser (from cffi>=1.1->bcrypt>=3.1.3->paramiko>=1.15.0->ncclient)
  Downloading pycparser-2.18.tar.gz (245kB)
    100% |████████████████████████████████| 256kB 380kB/s 
Building wheels for collected packages: ncclient, ipaddress, pycparser
  Running setup.py bdist_wheel for ncclient ... done
  Stored in directory: /root/.cache/pip/wheels/86/30/68/153d65b60834981c1960737f3f2de488574ba5355fe1329558
  Running setup.py bdist_wheel for ipaddress ... done
  Stored in directory: /root/.cache/pip/wheels/d7/6b/69/666188e8101897abb2e115d408d139a372bdf6bfa7abb5aef5
  Running setup.py bdist_wheel for pycparser ... done
  Stored in directory: /root/.cache/pip/wheels/95/14/9a/5e7b9024459d2a6600aaa64e0ba485325aff7a9ac7489db1b6
Successfully built ncclient ipaddress pycparser
Installing collected packages: pyasn1, pycparser, cffi, bcrypt, enum34, ipaddress, asn1crypto, cryptography, pynacl, paramiko, lxml, ncclient
Successfully installed asn1crypto-0.24.0 bcrypt-3.1.4 cffi-1.11.5 cryptography-2.1.4 enum34-1.1.6 ipaddress-1.0.19 lxml-4.1.1 ncclient-0.5.3 paramiko-2.4.0 pyasn1-0.4.2 pycparser-2.18 pynacl-1.2.1

如果安装报错参考以下解决方式

1、安装ncclient报错，无法安装lxml
Building lxml version 4.1.1.
Building without Cython.
ERROR: /bin/sh: xslt-config: command not found

** make sure the development packages of libxml2 and libxslt are installed **

Using build configuration of libxslt 
warning: no files found matching '*.html' under directory 'doc'
src/lxml/etree.c:97:20: fatal error: Python.h: No such file or directory
 #include "Python.h"
解决方法：
 yum install python-pip
 pip install wheel
pip install lxml
2、报错2 :src/MD2.c:31:20: fatal error: Python.h: No such file or directory
 yum install python-devel
3、报错3: c/_cffi_backend.c:15:17: fatal error: ffi.h: No such file or directory
yum install -y libffi libffi-devel