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[英]Server implementation (using Paramiko) for sftp AND command execution
[英]Command execution using paramiko
我正在研究一個python腳本,該腳本接受在遠程linux上執行的命令。 我沖浪並找到了Paramiko。 我開發了一個腳本,該腳本在執行“ 誰 ”,“ ps ”,“ ls ”之類的命令時可以正常工作。 但是同一腳本無法執行“ top ”和“ ping ”命令。 請幫助我。
import paramiko
import sys
class sampleParamiko:
ssh = ""
def __init__(self, host_ip, uname, passwd):
try:
self.ssh = paramiko.SSHClient()
self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
self.ssh.connect(host_ip, username=uname, password=passwd)
#print "In init function"
except (paramiko.BadHostKeyException, paramiko.AuthenticationException, paramiko.SSHException) as e:
print str(e)
sys.exit(-1)
def ececuteCmd(self,cmd):
try:
stdin, stdout, stderr = self.ssh.exec_command(cmd)
out_put = stdout.readlines()
for item in out_put:
print item,
except paramiko.SSHException as e:
print str(e)
sys.exit(-1)
host_ip = "10.27.207.62"
uname = "root"
password = "linux"
cmd = str(raw_input("Enter the command to execute in the host machine: "))
conn_obj = sampleParamiko(host_ip, uname, password)
conn_obj.ececuteCmd(cmd)
你可能想看看invoke_shell()
的方法paramiko.SSHClient
。
從您的代碼中,您可以執行以下操作:
import paramiko
import sys
class sampleParamiko:
ssh = ""
def __init__(self, host_ip, uname, passwd):
try:
self.ssh = paramiko.SSHClient()
self.ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
self.ssh.connect(host_ip, username=uname, password=passwd)
#print "In init function"
except (paramiko.BadHostKeyException, paramiko.AuthenticationException, paramiko.SSHException) as e:
print str(e)
sys.exit(-1)
def ececuteCmd(self,cmd):
try:
channel = self.ssh.invoke_shell()
timeout = 60 # timeout is in seconds
channel.settimeout(timeout)
newline = '\r'
line_buffer = ''
channel_buffer = ''
channel.send(cmd + ' ; exit ' + newline)
while True:
channel_buffer = channel.recv(1).decode('UTF-8')
if len(channel_buffer) == 0:
break
channel_buffer = channel_buffer.replace('\r', '')
if channel_buffer != '\n':
line_buffer += channel_buffer
else:
print line_buffer
line_buffer = ''
except paramiko.SSHException as e:
print str(e)
sys.exit(-1)
host_ip = "10.27.207.62"
uname = "root"
password = "linux"
cmd = str(raw_input("Enter the command to execute in the host machine: "))
conn_obj = sampleParamiko(host_ip, uname, password)
conn_obj.ececuteCmd(cmd)
輸出為:
Jean@MyDesktop:~$ ./test_paramiko.py
Enter the command to execute in the host machine: ping -c2 127.0.0.1
ping -c2 127.0.0.1 ; exit
[root@myserver ~]# ping -c2 127.0.0.1 ; exit
PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.032 ms
64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.043 ms
--- 127.0.0.1 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.032/0.037/0.043/0.008 ms
logout
但是您不能以交互方式發送命令。 因此,如果您僅ping 127.0.0.1
,它將一直持續下去,直到您[CTRL] + [C]或殺死您的python腳本。 top
相同。
如果需要交互式外殼,請查看paramiko隨附的示例腳本。 特別是demos / demo.py和demos / interactive.py
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