pxssh timeout issue

[Prabakaran141]

At some situation I'm facing this error, I have added the error details below. Can somebody help me in fixing this issue?

...
        s = pxssh.pxssh(timeout=5, maxread=2000000)
        switch_ip = raw_input('Enter the switch ip: ')
        username = raw_input('username: ')
        password = getpass.getpass('password: ')
        s.PROMPT = "\[.][\#]"
        s.force_password = True
...

Error:
Traceback (most recent call last):
  File "clean_intf_acl_pxssh.py", line 100, in <module>
    s.logout()
  File "/usr/lib/python2.7/dist-packages/pexpect/pxssh.py", line 350, in logout
    index = self.expect([EOF, "(?i)there are stopped jobs"])
  File "/usr/lib/python2.7/dist-packages/pexpect/spawnbase.py", line 315, in expect
    timeout, searchwindowsize, async)
  File "/usr/lib/python2.7/dist-packages/pexpect/spawnbase.py", line 339, in expect_list
    return exp.expect_loop(timeout)
  File "/usr/lib/python2.7/dist-packages/pexpect/expect.py", line 104, in expect_loop
    return self.timeout(e)
  File "/usr/lib/python2.7/dist-packages/pexpect/expect.py", line 68, in timeout
    raise TIMEOUT(msg)
pexpect.exceptions.TIMEOUT: Timeout exceeded.
<pexpect.pxssh.pxssh object at 0x7fa7eb01f490>
command: /usr/bin/ssh
args: ['/usr/bin/ssh', '-q', '-oRSAAuthentication=no', '-o', 'PubkeyAuthentication=no', '-l', 'admin', '10.16.206.119']
searcher: None
buffer (last 100 chars): 'ow\r\r\n\rN9K-119(config-if)# interface ethernet 1/16\r\r\n\rN9K-119(config-if)# no switchport mode trunk\r\r\n'
before (last 100 chars): 'ow\r\r\n\rN9K-119(config-if)# interface ethernet 1/16\r\r\n\rN9K-119(config-if)# no switchport mode trunk\r\r\n'
after: <class 'pexpect.exceptions.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 23594
child_fd: 5
closed: False
timeout: 5
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: None
logfile_read: None
logfile_send: None
maxread: 2000000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1

I have tired changing maxread value and timeout value, but the error still persist, I'm not sure whats happening here.

[Larz60+]

you need to capture the timeout:

        try:
            s = pxssh.pxssh(timeout=5, maxread=2000000)
            switch_ip = raw_input('Enter the switch ip: ')
            username = raw_input('username: ')
            password = getpass.getpass('password: ')
            s.PROMPT = "\[.][\#]"
            s.force_password = True
        except pxssh.ExceptionPxssh as e:
            print("pxssh failed on login.")
            print(e)

Not tested, but should be ok

[Prabakaran141]

Hi Larz60+,

Already I have the try...except block

The error I added is a captured one

[Larz60+]

Ok, so why are you holding out? in order to give advise, need the full picture
Show enough code to determine what is wrong

[Prabakaran141]

I have added the entire code.
This code is for removing some configurations in Switch, Please go through this and the error which I attached already and Give some view on it.

from pexpect import pxssh
import pexpect
import getpass
import re
import time
import string
import sys
import pdb
def acl_parser(out):
    ip_acl_names = []
    ipv6_acl_names = []
    mac_acl_names = []
    parser_dict = {}
    lines = out.replace('\\n','\n')
    lines = lines.split("\n")
    for line in lines:
        line = line.replace('\\r', ' ')
        line = line.strip(" ")
        if re.search(r'(IP access list)\s+(.*)',line,re.IGNORECASE):
            value = re.search(r'(IP access list)\s+(.*)',line,re.IGNORECASE)
            ip_acl_names.append(value.group(2))
        if re.search(r'(IPv6 access list)\s+(.*)',line,re.IGNORECASE):
            value = re.search(r'(IPv6 access list)\s+(.*)',line,re.IGNORECASE)
            ipv6_acl_names.append(value.group(2))
        if re.search(r'(MAC access list)\s+(.*)',line,re.IGNORECASE):
            value = re.search(r'(MAC access list)\s+(.*)',line,re.IGNORECASE)
            mac_acl_names.append(value.group(2))
    parser_dict['IP'] = ip_acl_names
    parser_dict['IPv6'] = ipv6_acl_names
    parser_dict['MAC'] = mac_acl_names

    return parser_dict

def intf_parser(out):
    intf_values = []
    intf_keys = []
    parser_dict = {}
    lines = out.replace('\\r', '')
    lines = lines.replace('\r','')
    lines = lines.replace('\\n','\n')
    lines = lines.split("\n\n")
    for line in lines:
        line = line.strip(" ")
        if re.search(r'(interface)\s+(.*)',line,re.IGNORECASE):
            value = re.search(r'(interface)\s+(.*)',line,re.IGNORECASE)
            intf_key = value.group(2)
            if 'Ethernet' in intf_key:
               parser_dict[intf_key] = line.split('\n')
               del_str = 'interface '+intf_key
               parser_dict[intf_key].remove(del_str)
    return parser_dict


if __name__ == '__main__':
    try:
        s = pxssh.pxssh(timeout=5, maxread=2000000)
        switch_ip = raw_input('Enter the switch ip: ')
        username = raw_input('username: ')
        password = getpass.getpass('password: ')
        s.PROMPT = "\[.][\#]"
        s.force_password = True
        s.login(switch_ip, username, password,auto_prompt_reset=False)
        s.sendline('sh access-lists | no-more')
        s.prompt()
        all_acls = s.before
        acl_resp = acl_parser(all_acls)
        # Removing ACLS
        s.sendline('conf t')
        for item in acl_resp.keys():
            if item == 'IP':
                for ip_item in acl_resp[item]:
                    acl_name = 'no ip access-list '+ip_item
                    s.sendline(acl_name)
            elif item == 'IPv6':
                for ipv6_item in acl_resp[item]:
                    acl_name = 'no ipv6 access-list '+ipv6_item
                    s.sendline(acl_name)
            elif item == 'MAC':
                for mac_item in acl_resp[item]:
                    acl_name = 'no mac access-list '+mac_item
                    s.sendline(acl_name)
        s.sendline('end')
        s.sendline('sh run int | no-more')   # run a command
        s.prompt()             # match the prompt
        all_intf = s.before
        #print(all_intf)        # print everything before the prompt.
        intf_resp = intf_parser(all_intf)
        # pdb.set_trace()
        s.sendline('conf t')
        for interface in intf_resp.keys():
            if len(intf_resp[interface]) != 0:
                intf_str = 'interface ethernet '+interface[8:]
                s.sendline(intf_str)
                for content in intf_resp[interface]:
                    content = content.strip(" ")
                    content_str = 'no '+ content
                    s.sendline(content_str)
        s.sendline('end')
        #pdb.set_trace()
        s.logout()
        print "Successfully removed all port configuration and access-lists"
    except pxssh.ExceptionPxssh as e:
        print e