I have nagios alerts set up to come through jabber with an http link to ack.
Is is possible there is a script I can run from a terminal on a remote workstation that takes the hostname as a parameter and acks the alert?
./ack hostname
The benefit, while seemingly mundane, is threefold. First, take http load off nagios. Secondly, nagios http pages can take up to 10-20 seconds to load, so I want to save time there. Thirdly, avoiding slower use of mouse + web interface + firefox/other annoyingly slow browser.
Ideally, I would like a script bound to a keyboard shortcut that simply acks the most recent alert. Finally, I want to take the inputs from a joystick, buttons and whatnot, and connect one to a big red button bound to the script so I can just ack the most recent nagios alert by hitting the button lol. (It would be rad too if the button had a screen on the enclosure that showed the text of the alert getting acked lol)
Make fun of me all you want, but this is actually something that would be useful to me. If I can save five seconds per alert, and I get 200 alerts per day I need to ack, that's saving me 15 minutes a day. And isn't the whole point of the sysadmin to automate what can be automated?
Thanks!
Yes, it's possible to ack nagios by parsing /var/lib/nagios3/retention.dat file.
See :
#!/usr/bin/env python
# -*- coding: utf8 -*-
# vim:ts=4:sw=4
import sys
file = "/var/lib/nagios3/retention.dat"
try:
sys.argv[1]
except:
print("Usage:\n"+sys.argv[0]+" <HOST>\n")
sys.exit(1)
f = open(file, "r")
line = f.readline()
c=0
name = {}
state = {}
host = {}
while line:
if "service_description=" in line:
name[c] = line.split("=", 2)[1]
elif "current_state=" in line:
state[c] = line.split("=", 2)[1]
elif "host_name=" in line:
host[c] = line.split("=", 2)[1]
elif "}" in line:
c+=1
line = f.readline()
for i in name:
num = int(state[i])
if num > 0 and sys.argv[1] == host[i].strip():
print(name[i].strip("\n"))
You simply have to put the host as parameter, and the script will displays the broken services.
Related
I was using this script on python2 to launch an application and then immediately exit the python script without waiting for the child process to end. This was my code:
kwargs = {}
if platform.system() == 'Windows':
# from msdn [1]
CREATE_NEW_PROCESS_GROUP = 0x00000200 # note: could get it from subprocess
DETACHED_PROCESS = 0x00000008 # 0x8 | 0x200 == 0x208
kwargs.update(creationflags=DETACHED_PROCESS | CREATE_NEW_PROCESS_GROUP)
kwargs.update(stderr=subprocess.PIPE)
elif sys.version_info < (3, 2): # assume posix
kwargs.update(preexec_fn=os.setsid)
else: # Python 3.2+ and Unix
kwargs.update(start_new_session=True)
subprocess.Popen([APP], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE,**kwargs)
It works OK on python 2.7, but it doesn't start the expected 'APP' on python 3.7 without changes.
In order to make it work in python3, I found two independent workarounds:
Change stderr to this: stderr=subprocess.DEVNULL
or
Add a time.sleep(0.1) call after the Popen (before closing the script).
I assume this is not actually related to python, but to some event that needs to happen after the process gets opened before the python script can safely exit?
Any hints? I'd really like to know why it happens. Right now I simply added the sleep call.
Thank you
I try log colored messages to PyCharm running console.
Yes, I have read that running console and embedded terminal is different thing, but:
For my code emited log message printed white, but it look colored if I just print() message. So looks like running console support colors, but I don't understand how enable it.
class DefaultHandler(logging.Handler):
def emit(self, record):
log_entry = self.format(record)
m = re.match('^(\[.*?\])', log_entry)
if m:
time = click.style(m.groups()[0], fg='magenta')
msg = click.style(log_entry[m.end():], **get_log_format(record))
click.echo(time + msg) # <- log emit
print(time, msg) # <- just print
else:
click.secho(log_entry, **get_log_format(record))
As you can see log message is white, but printed message is colored.
I'm not positive what your question is, but PyCharm has support for different colors on the console.
Console: Background, Error, output, Standard output, System output, User input
Log Console: Error, Expired entry, Warning
ANSI Colors
You have the ability to look at the defaults and modify them through Settings | Editor | Color Scheme | Console Colors. Is this what you're looking for?
How to make a dialog box (three options like quit/OK/Cancel) in blender and processing the text entered through python or in C. I'm unable to find any good tutorial on this. Any help....?
A quick and dirty way is to use zenity command (should be included by default in any python distribution). Try this short example script, it works in my Blender 2.69 on Ubuntu 14.04.
import bpy # bpy or bge does not matter
import subprocess as SP
# call an OS subprocess $ zenity --entry --text "some text"
# (this will ask OS to open a window with the dialog)
res=SP.Popen(['zenity','--entry','--text',
'please write some text'], stdout=SP.PIPE)
# get the user input string back
usertext=str(res.communicate()[0][:-1])
# adjust user input string
text=usertext[2:-1]
print("I got this text from the user: %s"%text)
See the zenity --help for more complex dialogs
blender doesn't offer things like dialogs.
Answers to This previous question on external modules may be helpful.
class DialogOperator(bpy.types.Operator)
bl_idname = "object.dialog_operator"
bl_label = "Save Before You QUIT!"
def execute(self, context):
message = " You didn't saved yet "
self.report({'INFO'}, message)
print(message)
return {'FINISHED'}
def invoke(self, context, event):
return context.window_manager.invoke_props_dialog(self)
class DialogPanel(bpy.types.Panel)
bl_label = "Dialog"
bl_space_type = "VIEW_3D"
bl_region_type = "UI"
def draw(self, context):
self.layout.operator("object.dialog_operator")
But this is only for creating a dialog window. after this have to insert buttons in this code.If anyone known this try to post the answer. At the same time I'm also trying to sort out this.
I set CELERY_RESULT_BACKEND = "amqp" in celeryconfig.py
but I get:
>>> from tasks import add
>>> result = add.delay(3,5)
>>> result.ready()
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/djangoprojects/venv/local/lib/python2.7/site-packages/celery/result.py", line 105, in ready
return self.state in self.backend.READY_STATES
File "/djangoprojects/venv/local/lib/python2.7/site-packages/celery/result.py", line 184, in state
return self.backend.get_status(self.task_id)
File "/djangoprojects/venv/local/lib/python2.7/site-packages/celery/backends/base.py", line 414, in _is_disabled
raise NotImplementedError("No result backend configured. "
NotImplementedError: No result backend configured. Please see the documentation for more information.
I just went through this so I can shed some light on this. One might think for all of the great documentation stating some of this would have been a bit more obvious.
I'll assume you have both RabbitMQ up and functioning (it needs to be running), and that you have dj-celery installed.
Once you have that then all you need to do is to include this single line in your setting.py file.
BROKER_URL = "amqp://guest:guest#localhost:5672//"
Then you need to run syncdb and start this thing up using:
python manage.py celeryd -E -B --loglevel=info
The -E states that you want events captured and the -B states you want celerybeats running. The former enable you to actually see something in the admin window and the later allows you to schedule. Finally you need to ensure that you are actually going to capture the events and the status. So in another terminal run this:
./manage.py celerycam
And then finally your able to see the working example provided in the docs.. -- Again assuming you created the tasks.py that is says to.
>>> result = add.delay(4, 4)
>>> result.ready() # returns True if the task has finished processing.
False
>>> result.result # task is not ready, so no return value yet.
None
>>> result.get() # Waits until the task is done and returns the retval.
8
>>> result.result # direct access to result, doesn't re-raise errors.
8
>>> result.successful() # returns True if the task didn't end in failure.
True
Furthermore then you are able to view your status in the admin panel.
I hope this helps!! I would add one more thing which helped me. Watching the RabbitMQ Log file was key as it helped me identify that django-celery was actually talking to RabbitMQ.
Are you running django celery?
If so, you need to start a python shell in the context of django (or whatever the technical term is).
Type:
python manage.py shell
And try your commands from that shell
HI tried everything to work celery v3.1.25 with Django 1.8 version nothing worked..
Finally below line helped me ,feeling happy
app = Celery('documents',backend="celery.backends.amqp:AMQPBackend")
Setting backend="celery.backends.amqp:AMQPBackend" fixed my error.
Ill demonstrate the problem I am facing with a small example.
class TestProtocol(basic.LineReceiver):
def lineReceived(self, line):
print line
Everything works fine as long as I use the telnet client to connect to the server. However, the line is not received connect and send the data using netcat. I have a feeling that this has something to do with the default delimiter being "\r\n" in twisted.
How could I make a server such that both the clients(telnet and nc) would behave in a similar manner when connecting to the client?
LineReceiver only supports one delimiter. You can specify it, but there can only be one at a time. In general, if you want to support multiple delimiters, you'll need to implement a new protocol that supports that. You could take a look at the implementation of LineReceiver for some ideas about how a line-based protocol is implemented.
netcat sends whatever you type, so the delimiter is often \n (but it may vary from platform to platform and terminal emulator to terminal emulator). For the special case of \n, which is a substring of the default LineReceiver delimiter \r\n, there's another trick you can use. Set the TestProtocol.delimiter to "\n" and then strip the "\r" off the end of the line passed to lineReceived if there is one.
class TestProtocol(basic.LineReceiver):
delimiter = "\n"
def lineReceived(self, line):
print line.rstrip("\r")
Another workaround is to use nc with the -C switch.
From the manual:
-C Send CRLF as line-ending
or as #CraigMcQueen suggested:
socket with -c switch (Ubuntu package).
Twisted's LineReceiver and LineOnlyReceiver only support one line ending delimiter.
Here is code for UniversalLineReceiver and UniversalLineOnlyReceiver, which override the dataReceived() method with support for universal line endings (any combination of CR+LF, CR or LF). The line breaks are detected with the regular expression object delimiter_re.
Note, they override functions with more code in them than I'd like, so there's a chance that they may break if the underlying Twisted implementation changes. I've tested they work with Twisted 13.2.0. The essential change is the use of delimiter_re.split() from the re module.
# Standard Python packages
import re
# Twisted framework
from twisted.protocols.basic import LineReceiver, LineOnlyReceiver
class UniversalLineReceiver(LineReceiver):
delimiter_re = re.compile(br"\r\n|\r|\n")
def dataReceived(self, data):
"""
Protocol.dataReceived.
Translates bytes into lines, and calls lineReceived (or
rawDataReceived, depending on mode.)
"""
if self._busyReceiving:
self._buffer += data
return
try:
self._busyReceiving = True
self._buffer += data
while self._buffer and not self.paused:
if self.line_mode:
try:
line, remainder = self.delimiter_re.split(self._buffer, 1)
except ValueError:
if len(self._buffer) > self.MAX_LENGTH:
line, self._buffer = self._buffer, b''
return self.lineLengthExceeded(line)
return
else:
lineLength = len(line)
if lineLength > self.MAX_LENGTH:
exceeded = self._buffer
self._buffer = b''
return self.lineLengthExceeded(exceeded)
self._buffer = remainder
why = self.lineReceived(line)
if (why or self.transport and
self.transport.disconnecting):
return why
else:
data = self._buffer
self._buffer = b''
why = self.rawDataReceived(data)
if why:
return why
finally:
self._busyReceiving = False
class UniversalLineOnlyReceiver(LineOnlyReceiver):
delimiter_re = re.compile(br"\r\n|\r|\n")
def dataReceived(self, data):
"""
Translates bytes into lines, and calls lineReceived.
"""
lines = self.delimiter_re.split(self._buffer+data)
self._buffer = lines.pop(-1)
for line in lines:
if self.transport.disconnecting:
# this is necessary because the transport may be told to lose
# the connection by a line within a larger packet, and it is
# important to disregard all the lines in that packet following
# the one that told it to close.
return
if len(line) > self.MAX_LENGTH:
return self.lineLengthExceeded(line)
else:
self.lineReceived(line)
if len(self._buffer) > self.MAX_LENGTH:
return self.lineLengthExceeded(self._buffer)