68 lines
2.7 KiB
Python
68 lines
2.7 KiB
Python
# (C) Copyright 2015,2016 Hewlett Packard Enterprise Development LP
|
|
|
|
import logging
|
|
|
|
import monasca_setup.agent_config
|
|
import monasca_setup.detection
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class HostAlive(monasca_setup.detection.ArgsPlugin):
|
|
"""Setup an host_alive check according to the passed in args.
|
|
Despite being a detection plugin, this plugin does no detection and
|
|
will be a NOOP without arguments. Expects two space-separated
|
|
arguments, 'hostname' and 'type,' where the former is a comma-separated
|
|
list of hosts, and the latter can be either 'ssh' or 'ping'.
|
|
Examples:
|
|
|
|
monasca-setup -d hostalive -a "hostname=remotebox type=ping"
|
|
|
|
monasca-setup -d hostalive -a "hostname=rb,rb2 target_hostname=,rb2-nic2 type=ssh"
|
|
"""
|
|
|
|
DEFAULT_PING_TIMEOUT = 1
|
|
DEFAULT_SSH_TIMEOUT = 2
|
|
DEFAULT_SSH_PORT = 22
|
|
|
|
def _detect(self):
|
|
"""Run detection, set self.available True if the service is detected.
|
|
"""
|
|
self.available = self._check_required_args(['hostname', 'type'])
|
|
# Ideally, the arg would be called 'hostnames,' but leaving it
|
|
# 'hostname' avoids breaking backward compatibility.
|
|
|
|
def build_config(self):
|
|
"""Build the config as a Plugins object and return.
|
|
"""
|
|
config = monasca_setup.agent_config.Plugins()
|
|
log.info("\tEnabling {type} host check for {hostname}".format(**self.args))
|
|
instances = []
|
|
for hostname in self.args['hostname'].split(','):
|
|
# Since the naming in the args and in the config don't match,
|
|
# build_instance is only good for dimensions
|
|
instance = self._build_instance([])
|
|
instance.update({'name': "{0} {1}".format(hostname,
|
|
self.args['type']),
|
|
'host_name': hostname,
|
|
'alive_test': self.args['type']})
|
|
instances.append(instance)
|
|
if 'target_hostname' in self.args:
|
|
index = 0
|
|
network_names_to_check = self.args['target_hostname'].split(',')
|
|
for target_hostname in network_names_to_check:
|
|
if target_hostname:
|
|
if index >= len(instances):
|
|
raise Exception('Too many target_hostname values')
|
|
instance = instances[index]
|
|
instance.update({'target_hostname': target_hostname})
|
|
index += 1
|
|
|
|
config['host_alive'] = {
|
|
'init_config': {'ping_timeout': self.DEFAULT_PING_TIMEOUT,
|
|
'ssh_timeout': self.DEFAULT_SSH_TIMEOUT,
|
|
'ssh_port': self.DEFAULT_SSH_PORT},
|
|
'instances': instances}
|
|
|
|
return config
|