用python實現遠端登陸主機執行命令或通過sftp上傳下載檔案,有個很好的模組paramiko模組來演示這些功能,使用起來很方便,大家可學習一下。寫了幾個小程式,用於說明此模組的使用方法。
1:連線遠端linux主機並執行命令
- #!/usr/bin/env python
- import paramiko
- hostname=`192.168.0.102`
- username=`root`
- password=`abc`
- port=22
- paramiko.util.log_to_file(`paramiko.log`)
- s=paramiko.SSHClient()
- s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
- s.connect(hostname = hostname,port=port,username=username, password=password)
- stdin,stdout,stderr=s.exec_command(`free;df -h`)
- print stdout.read()
- s.close()
執行結果如下:
- total used free shared buffers cached
- Mem: 2074940 2057420 17520 0 42416 1867968
- -/+ buffers/cache: 147036 1927904
- Swap: 2096472 240 2096232
- Filesystem Size Used Avail Use% Mounted on
- /dev/sda1 30G 12G 17G 42% /
- none 1014M 0 1014M 0% /dev/shm
- /dev/sda3 2.0G 289M 1.6G 16% /var
- /dev/sdb1 135G 14G 115G 11% /data
- /dev/sdc1 135G 127G 880M 100% /data1
- /dev/sdd1 135G 99G 30G 78% /data2
2:連線遠端linux主機上傳下載檔案(paramiko模組是用SFTP協議來實現的)
- #!/usr/bin/env python
- import paramiko,datetime,os
- hostname=`192.168.0.102`
- username=`root`
- password=`abc123`
- port=22
- local_dir=`/tmp/`
- remote_dir=`/tmp/test/`
- try:
- t=paramiko.Transport((hostname,port))
- t.connect(username=username,password=password)
- sftp=paramiko.SFTPClient.from_transport(t)
- #files=sftp.listdir(dir_path)
- files=sftp.listdir(remote_dir)
- for f in files:
- print ``
- print `#########################################`
- print `Beginning to download file from %s %s ` % (hostname,datetime.datetime.now())
- print `Downloading file:`,os.path.join(remote_dir,f)
- sftp.get(os.path.join(remote_dir,f),os.path.join(local_dir,f))#下載
- #sftp.put(os.path.join(local_dir,f),os.path.join(remote_dir,f))#上傳
- print `Download file success %s ` % datetime.datetime.now()
- print ``
- print `##########################################`
- t.close()
- except Exception:
- print "connect error!"
執行結果:
- #########################################
- Beginning to download file from 192.168.0.102 2012-11-05 15:49:01.334686
- Downloading file: /tmp/test/wgetrc Download file success 2012-11-05 15:49:05.955184
- ##########################################
- #########################################
- Beginning to download file from 192.168.0.102 2012-11-05 15:49:05.955342
- Downloading file: /tmp/test/xinetd.conf Download file success 2012-11-05 15:49:10.929568
- ##########################################
- #########################################
- Beginning to download file from 192.168.0.102 2012-11-05 15:49:10.929740
- Downloading file: /tmp/test/warnquota.conf Download file success 2011-12-05 15:49:14.213570
- ##########################################
還有好多用法,具體的可以看官方文件:http://www.lag.net/paramiko/docs/