zhinvswitcher.py

#!/usr/bin/env python
#
# import needed modules.
# pyzabbix is needed, see https://github.com/lukecyca/pyzabbix
#
import argparse
import ConfigParser
import os
import os.path
import sys
import distutils.util
from pyzabbix import ZabbixAPI

# define config helper function
def ConfigSectionMap(section):
    dict1 = {}
    options = Config.options(section)
    for option in options:
 	try:
		dict1[option] = Config.get(section, option)
		if dict1[option] == -1:
			DebugPrint("skip: %s" % option)
	except:
		print("exception on %s!" % option)
		dict1[option] = None
    return dict1


# set default vars
defconf = os.getenv("HOME") + "/.zbx.conf"
username = ""
password = ""
api = ""
noverify = ""

# Define commandline arguments
parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter,description='Switches the host inventory mode for the specified host(s) or hostgroup(s). The default setting is to switch to "automatic" mode.', epilog="""
This program can use .ini style configuration files to retrieve the needed API connection information.
To use this type of storage, create a conf file (the default is $HOME/.zbx.conf) that contains at least the [Zabbix API] section and any of the other parameters:
       
 [Zabbix API]
 username=johndoe
 password=verysecretpassword
 api=https://zabbix.mycompany.com/path/to/zabbix/frontend/
 no_verify=true

""")

group = parser.add_mutually_exclusive_group(required=True)
group.add_argument('-H', '--hostnames' ,help='Hostname(s) to switch inventory mode on', nargs='+')
group.add_argument('-G', '--hostgroups' ,help='Switch inventory mode on all hosts in these hostgroup(s)', nargs='+')
group.add_argument('--all-hosts', help='Switch inventory mode on *ALL* hosts, use with caution',action='store_true')
parser.add_argument('-u', '--username', help='User for the Zabbix api')
parser.add_argument('-p', '--password', help='Password for the Zabbix api user')
parser.add_argument('-a', '--api', help='Zabbix API URL')
parser.add_argument('--no-verify', help='Disables certificate validation when nventory_mode using a secure connection',action='store_true') 
parser.add_argument('-c','--config', help='Config file location (defaults to $HOME/.zbx.conf)')
parser.add_argument('-n', '--numeric', help='Use numeric ids instead of names, applies to -t, -H and -G',action='store_true')
parser.add_argument('-e', '--extended', help='Extended output',action='store_true')
parser.add_argument('-m', '--mode', help='Inventory mode to auto(default), disabled or manual', default="auto")
args = parser.parse_args()

# load config module
Config = ConfigParser.ConfigParser()
Config

# if configuration argument is set, test the config file
if args.config:
 if os.path.isfile(args.config) and os.access(args.config, os.R_OK):
  Config.read(args.config)

# if not set, try default config file
else:
 if os.path.isfile(defconf) and os.access(defconf, os.R_OK):
  Config.read(defconf)

# try to load available settings from config file
try:
 username=ConfigSectionMap("Zabbix API")['username']
 password=ConfigSectionMap("Zabbix API")['password']
 api=ConfigSectionMap("Zabbix API")['api']
 noverify=bool(distutils.util.strtobool(ConfigSectionMap("Zabbix API")["no_verify"]))
except:
 pass

# override settings if they are provided as arguments
if args.username:
 username = args.username

if args.password:
 password = args.password

if args.api:
 api = args.api

if args.no_verify:
 noverify = args.no_verify

# test for needed params
if not username:
 sys.exit("Error: API User not set")

if not password:
 sys.exit("Error: API Password not set")
 
if not api:
 sys.exit("Error: API URL is not set")

# Setup Zabbix API connection
zapi = ZabbixAPI(api)

if noverify is True:
 zapi.session.verify = False

# Login to the Zabbix API
zapi.login(username, password)

##################################
# Start actual API logic
##################################

if args.mode == "auto":
  invm=int(1)
elif args.mode == "disabled":
  invm=int(-1)	
elif args.mode == "manual":
  invm=int('0')
else:
  sys.exit("Error: unknown inventory mode")

if args.all_hosts:
       # Make a list of all hosts
       hlookup = zapi.host.get()  
else:

  if args.hostgroups:
    if args.numeric:
       # We are getting numeric hostgroup ID's, let put them in a list
       # (ignore any non digit items)
       hgids=[s for s in args.hostgroups if s.isdigit()] 
       for hgid in hgids:
         exists=zapi.hostgroup.exists(groupid=hgid)
         if not exists:
            sys.exit("Error: Hostgroupid "+hgid+" does not exist")
   
    else:
       # We are using hostgroup names, let's resolve them to ids.
       # First, get the named hostgroups via an API call
       hglookup = zapi.hostgroup.get(filter=({'name':args.hostgroups}))  
  
       # hgids will hold the numeric hostgroup ids
       hgids = []
       for hg in range(len(hglookup)):
          # Create the list of hostgroup ids
          hgids.append(int(hglookup[hg]['groupid']))
  
    # Now that we have resolved the hostgroup ids, we can make an API call to retrieve the member hosts
    hlookup=zapi.host.get(output=['hostid'],groupids=hgids)
  
  elif args.hostnames:
    if args.numeric:
       # We are getting numeric host ID's, let put them in a list
       # (ignore any non digit items)
       hids=[s for s in args.hostnames if s.isdigit()]  
       hlookup = []
       for hid in hids:
         exists=zapi.host.exists(hostid=hid)
         if not exists:
            sys.exit("Error: Hostid "+hid+" does not exist")
         if not hlookup:
            hlookup = [{unicode('hostid'): unicode(hid)}]
         else:
            hlookup.append({unicode('hostid'): unicode(hid)})
  
    else:
       # We are using hostnames, let's resolve them to ids.
       # Get hosts via an API call
       hlookup = zapi.host.get(filter=({'host':args.hostnames}))  
  
  else:
    #uhm... what were we supposed to do?
    sys.exit("Error: Nothing to do here")
  
  if not hlookup:
   sys.exit("Error: No hosts found")
  
try:
 # Apply the linkage
 result=zapi.host.massupdate(hosts=hlookup,inventory_mode=invm)
except:
 sys.exit("Error: Something went wrong while performing the update")
 
if args.extended:
  hosts=zapi.host.get(output='extend',hostids=result['hostids'])
  hostnames=""
  for host in range(len(hosts)):
      if not hostnames:
        hostnames = str(hosts[host]['host'])
      else:
        hostnames = hostnames + ", " + str(hosts[host]['host'])
  print("Inventory mode switched to \"" + args.mode + "\" on: " + hostnames)
  
# And we're done...