I am trying to set up an agent in the cloud and I want to distinguish my device based on the parameter passing in the snmpwalk.
snmpwalk -v3 -u user -l authNoPriv -A password <agent_IP> .1.3.6 "dev1"
If I put an observer function we are able to fetch some details like
def requestObserver(snmpEngine, execpoint, variables, cbCtx):
print('Execution point: %s' % execpoint)
print('* securityModel: %s' % variables['securityModel'])
print('* securityName: %s' % variables['securityName'])
print('* contextEngineId: %s' % (variables['contextEngineId'] and variables['contextEngineId'].prettyPrint() or '<empty>',))
print('* contextName: %s' % variables['contextName'].prettyPrint())
print('* transportDomain: %s' % '.'.join([str(x) for x in variables['transportDomain']]))
print('* transportAddress: %s' % '#'.join([str(x) for x in variables['transportAddress']]))
print('* securityLevel: %s' % variables['securityLevel'])
print('* PDU: %s' % variables['pdu'].prettyPrint())
but I don't know how to get this extra parameter in the agent side. If it is not possible, is there any other method exist for passing my device info to the agent?
Related
I wrote a script for nmap but it doesn't work
Maybe a problem with the libraries, but not sure (I'm new to this)
import nmap
import sys
import traceback
def scan_hosts(hosts, scan_type):
try:
nm = nmap.PortScanner()
if scan_type == 'SYN':
nm.scan(hosts=hosts, arguments='-p- -sS -T4 -A --script=vulners')
elif scan_type == 'UDP':
nm.scan(hosts=hosts, arguments='-p- -sU -T4 -A --script=vulners')
elif scan_type == 'FULL':
nm.scan(hosts=hosts, arguments='-p- -sS -sU -T4 -A --script=vulners')
for host in nm.all_hosts():
print('Host: %s (%s)' % (host, nm[host].hostname()))
for proto in nm[host].all_protocols():
print('Protocol: %s' % proto)
lport = nm[host][proto].keys()
for port in lport:
print('port : %s\tstate : %s' % (port, nm[host][proto][port]['state']))
except Exception as e:
print(f"An error occurred while scanning the host: {e}")
print("\n".join(traceback.format_exception(etype=type(e), value=e, tb=e.__traceback__)))
# Attempt to correct the error
if "timed out" in str(e):
print("Error: Host timed out. Retrying with increased timeout...")
nm.scan(hosts=hosts, arguments='-p- -sS -T4 -A --script=vulners --host-timeout=60')
else:
print("Error could not be corrected. Exiting...")
sys.exit(1)
if __name__ == '__main__':
hosts = '0.0.0.0/0'
scan_type = 'FULL' # can be one of 'SYN', 'UDP', or 'FULL'
scan_hosts(hosts, scan_type)
Maybe a problem with the libraries, but not sure (I'm new to this)
I would like to run a program that does not properly support my desired resolution+DPI settings.
Also I want to change my default GTK theme to a lighter one.
What I currently have:
#!/bin/bash
xfconf-query -c xsettings -p /Xft/DPI -s 0
GTK_THEME=/usr/share/themes/Adwaita/gtk-2.0/gtkrc /home/unknown/scripts/ch_resolution.py --output DP-0 --resolution 2560x1440 beersmith3
This sets my DPI settings to 0, changes the gtk-theme, runs a python script that changes my resolution and runs the program, and on program exit changes it back. This is working properly.
Now I want to change back my DPI settings to 136 on program exit
xfconf-query -c xsettings -p /Xft/DPI -s 136
My guess is I need to use a while loop but have no idea how to do it.
ch_resolution.py
#!/usr/bin/env python3
import argparse
import re
import subprocess
import sys
parser = argparse.ArgumentParser()
parser.add_argument('--output', required=True)
parser.add_argument('--resolution', required=True)
parser.add_argument('APP')
args = parser.parse_args()
device_context = '' # track what device's modes we are looking at
modes = [] # keep track of all the devices and modes discovered
current_modes = [] # remember the user's current settings
# Run xrandr and ask it what devices and modes are supported
xrandrinfo = subprocess.Popen('xrandr -q', shell=True, stdout=subprocess.PIPE)
output = xrandrinfo.communicate()[0].decode().split('\n')
for line in output:
# luckily the various data from xrandr are separated by whitespace...
foo = line.split()
# Check to see if the second word in the line indicates a new context
# -- if so, keep track of the context of the device we're seeing
if len(foo) >= 2: # throw out any weirdly formatted lines
if foo[1] == 'disconnected':
# we have a new context, but it should be ignored
device_context = ''
if foo[1] == 'connected':
# we have a new context that we want to test
device_context = foo[0]
elif device_context != '': # we've previously seen a 'connected' dev
# mode names seem to always be of the format [horiz]x[vert]
# (there can be non-mode information inside of a device context!)
if foo[0].find('x') != -1:
modes.append((device_context, foo[0]))
# we also want to remember what the current mode is, which xrandr
# marks with a '*' character, so we can set things back the way
# we found them at the end:
if line.find('*') != -1:
current_modes.append((device_context, foo[0]))
for mode in modes:
if args.output == mode[0] and args.resolution == mode[1]:
cmd = 'xrandr --output ' + mode[0] + ' --mode ' + mode[1]
subprocess.call(cmd, shell=True)
break
else:
print('Unable to set mode ' + args.resolution + ' for output ' + args.output)
sys.exit(1)
subprocess.call(args.APP, shell=True)
# Put things back the way we found them
for mode in current_modes:
cmd = 'xrandr --output ' + mode[0] + ' --mode ' + mode[1]
subprocess.call(cmd, shell=True)
edit:
Thanks #AndreLDM for pointing out that I do not need a separate python script to change the resolution, I don't know why I didn't think of that.
I changed it so I don't need the python script and it is working properly now. If I can improve this script please tell me!
#!/bin/bash
xrandr --output DP-0 --mode 2560x1440
xfconf-query -c xsettings -p /Xft/DPI -s 0
GTK_THEME=/usr/share/themes/Adwaita/gtk-2.0/gtkrc beersmith3
if [ $? == 0 ]
then
xrandr --output DP-0 --mode 3840x2160
xfconf-query -c xsettings -p /Xft/DPI -s 136
exit 0
else
xrandr --output DP-0 --mode 3840x2160
xfconf-query -c xsettings -p /Xft/DPI -s 136
exit 1
fi
I am looking to run multiple instances of a command line script at the same time. I am new to this concept of "multi-threading" so am at bit of a loss as to why I am seeing the things that I am seeing.
I have tried to execute the sub-processing in two different ways:
1 - Using multiple calls of Popen without a communicate until the end:
command = 'raster2pgsql -I -C -e -s 26911 %s -t 100x100 -F p839.%s_image_sum_sum1 | psql -U david -d projects -h pg3' % (workspace + '\\r_sumsum1{}'.format(i), str(i))
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
command = 'raster2pgsql -I -C -e -s 26911 %s -t 100x100 -F p839.%s_image_sum_sum2 | psql -U david -d projects -h pg3' % (workspace + '\\r_sumsum2{}'.format(i), str(i))
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
command = 'raster2pgsql -I -C -e -s 26911 %s -t 100x100 -F p839.%s_image_sum_sum3 | psql -U david -d projects -h pg3' % (workspace + '\\r_sumsum3{}'.format(i), str(i))
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
(stdoutdata, stderrdata) = process.communicate()
this starts up each of the command line item but only completes the last entry leaving the other 2 hanging.
2 - Attempting to implement an example from Python threading multiple bash subprocesses? but nothing happens except for a printout of the commands (program hangs with no command line arguments running as observed in windows task manager:
import threading
import Queue
import commands
import time
workspace = r'F:\Processing\SM'
image = 't08r_e'
image_name = (image.split('.'))[0]
i = 0
process_image_tif = workspace + '\\{}{}.tif'.format((image.split('r'))[0], str(i))
# thread class to run a command
class ExampleThread(threading.Thread):
def __init__(self, cmd, queue):
threading.Thread.__init__(self)
self.cmd = cmd
self.queue = queue
def run(self):
# execute the command, queue the result
(status, output) = commands.getstatusoutput(self.cmd)
self.queue.put((self.cmd, output, status))
# queue where results are placed
result_queue = Queue.Queue()
# define the commands to be run in parallel, run them
cmds = ['raster2pgsql -I -C -e -s 26911 %s -t 100x100 -F p839.%s_image_sum_sum1 | psql -U david -d projects -h pg3' % (workspace + '\\r_sumsum1{}'.format(i), str(i)),
'raster2pgsql -I -C -e -s 26911 %s -t 100x100 -F p839.%s_image_sum_sum2 | psql -U david -d projects -h pg3' % (workspace + '\\r_sumsum2{}'.format(i), str(i)),
'raster2pgsql -I -C -e -s 26911 %s -t 100x100 -F p839.%s_image_sum_sum3 | psql -U david -d projects -h pg3' % (workspace + '\\r_sumsum3{}'.format(i), str(i)),
]
for cmd in cmds:
thread = ExampleThread(cmd, result_queue)
thread.start()
# print results as we get them
while threading.active_count() > 1 or not result_queue.empty():
while not result_queue.empty():
(cmd, output, status) = result_queue.get()
print(cmd)
print(output)
How can I run all of these commands at the same time achieving a result at the end? I am running in windows, pyhton 2.7.
My first try didn't work because of the repeated definitions of stdout and sterror. Removing these definitions causes expected behavior.
I have a bash script called sr_run_batch.sh which does super resolution of images. Now I want to do testing on different servers in parallel at the same time. ie. 1 Virtual machine at one given point of time. then 2 virtual machines at one point of time , 3 and then 4.
I tried writing into it the commands
for host in $(cat hosts.txt); do ssh "$host" "$command" >"output.$host"; done
ssh-keygen && for host in $(cat hosts.txt); do ssh-copy-id $host; done
where the file hosts.txt contains the list of servers: username#ip(format) but when I run this, it gives me substitution error
Hence, I tried pssh (parallel-ssh)
pssh -h hosts-file -l username -P $command
command being ./sr_run_batch.sh
but it didn't run, so I modified this to
pssh -h hosts-file -l ben -P -I<./sr_run_batch.sh
But, for some unknown reason, it just prints the echo statements in the code.
here is the code :
NList=(5)
VList=(1)
FList=("input/flower1.jpg" "input/flower2.jpg" "input/flower3.jpg" "input/flower4.jpg")
IList=("320X240" "640X480" "1280X960" "1920X1200")
SList=(2 3)
for VM in ${VList[#]}; do
for ((index=0; index < ${#FList};)) do
file=$FList[$index]
image_size=$IList[$index]
width=`echo $image_size|cut -d "X" -f1`
height=`echo $image_size|cut -d "X" -f2`
for scale_factor in ${SList[#]}; do
for users in ${NList[#]}; do
echo "V: $VM, " "F: $file, " "S: $scale_factor, " "I: $width $height , " "N: $users"
for i in `seq 1 $users` ; do
./sr_run_once.sh $file $width $height $scale_factor &
done
wait
done # for users
done # for scale_factor
done # for index
done # for VM
exit 0
Have you also tried to use pssh with a simple bash-script so see if the communication is set up ok?
$ pssh -h hosts.txt -A -l ben -P -I<./uptime.sh
Warning: do not enter your password if anyone else has superuser
privileges or access to your account.
Password:
10.0.0.67: 11:06:50 up 28 min, 2 users, load average: 0.00, 0.00, 0.00
[1] 11:06:50 [SUCCESS] 10.0.0.67
10.0.0.218: 11:06:50 up 24 min, 2 users, load average: 0.00, 0.05, 0.20
[2] 11:06:50 [SUCCESS] 10.0.0.218
I'm having trouble programmatically running a local script over ssh.
I'm unsure if this is a problem with the shell variable substitution on the local host.
When manually running,
ssh monit#server1 'bash -s' < /u02/splunk/splunk/etc/apps/Splunk_TA_nix/bin/cpu.sh
I get the expected output,
CPU pctUser pctNice pctSystem pctIowait pctIdle
all 11.21 0.00 1.50 0.31 86.98
0 0.00 0.00 0.00 0.00 100.00
1 3.00 0.00 1.00 0.00 96.00
....
but I get
bash: /u02/splunk/splunk/etc/apps/Splunk_TA_nix/bin/cpu.sh: No such file or directory
when running the following code,
splunk_bin_dir = '/u02/splunk/splunk/etc/apps/Splunk_TA_nix/bin'
hostname = 'server1'
username = 'monit'
password = 'monit#_'
command = "/usr/bin/ssh %(username)s#%(hostname)s 'bash -s' < %(splunk_bin_dir)s/cpu.sh" % locals()
print command
ssh_new_conn = 'Are you sure you want to continue connecting'
p = pexpect.spawn(command, timeout=360)
# Handles the 3 possible connection outcomes:
# a) Ssh to the remote host for the first time, triggering 'Are you sure you want to continue connecting'
# b) ask you for password
# c) No password is needed at all, because you already have the key.
i = p.expect([ssh_new_conn,'[pP]assword:',pexpect.EOF])
print ' Initial pexpect command output: ', i
if i == 0:
# send 'yes'
p.sendline('yes')
i = p.expect(['[pP]assword:',pexpect.EOF])
print 'sent yes. pexpect command output', i
if i == 0:
# send the password
p.sendline(password)
p.expect(pexpect.EOF)
elif i == 1:
# send the password
p.sendline(password)
p.expect(pexpect.EOF)
elif i == 2:
print "pexpect faced key or connection timeout"
pass
print p.before
These are the printed outputs,
/usr/bin/ssh monit#server1 'bash -s' < /u02/splunk/splunk/etc/apps/Splunk_TA_nix/bin/cpu.sh
Initial pexpect command output: 1
bash: /u02/splunk/splunk/etc/apps/Splunk_TA_nix/bin/cpu.sh: No such file or directory
pexpect is bumping into the [pP]assword line so I guess the password is being correctly passed,
Here the note from pexpect manual:
Remember that Pexpect does NOT interpret shell meta characters such as
redirect, pipe, or wild cards (>, |, or *). This is a common mistake.
If you want to run a command and pipe it through another command then
you must also start a shell.
This is the working line
command = """/bin/bash -c "/usr/bin/ssh %(username)s#%(hostname)s 'bash -s' < %(splunk_bin_dir)s/cpu.sh" """ % locals()