def principal_unit_cache():
""" Cache the principal unit that a beat is related to.
This info will not change over the lifetime of the deployment, so we
only need to set it once.
"""
cache = kv()
if not cache.get('principal_name'):
principal_name = principal_unit()
if principal_name:
cache.set('principal_name', principal_name)
def principal_unit_cache():
""" Cache the principal unit that a beat is related to.
This info will not change over the lifetime of the deployment, so we
only need to set it once.
"""
cache = kv()
if not cache.get('principal_name'):
principal_name = principal_unit()
if principal_name:
cache.set('principal_name', principal_name)
def nagios_hostname(self):
""" Return the string that nagios will use to identify this host """
host_context = hookenv.config('nagios_host_context')
if host_context:
host_context += '-'
hostname_type = hookenv.config('nagios_hostname_type')
if hostname_type == 'host' or not self.is_ready():
nagios_hostname = "{}{}".format(host_context, socket.gethostname())
return nagios_hostname
else:
principal_unitname = hookenv.principal_unit()
# Fallback to using "primary" if it exists.
if not principal_unitname:
for relunit in self[self.name]:
if relunit.get('primary', 'False').lower() == 'true':
principal_unitname = relunit['__unit__']
break
nagios_hostname = "{}{}".format(host_context, principal_unitname)
nagios_hostname = nagios_hostname.replace('/', '-')
return nagios_hostname
def nagios_hostname(self):
"""Return the string that nagios will use to identify this host."""
host_context = hookenv.config("nagios_host_context")
if host_context:
host_context += "-"
hostname_type = hookenv.config("nagios_hostname_type")
if hostname_type == "host" or not self.is_ready():
nagios_hostname = "{}{}".format(host_context, socket.gethostname())
return nagios_hostname
else:
principal_unitname = hookenv.principal_unit()
# Fallback to using "primary" if it exists.
if not principal_unitname:
for relunit in self[self.name]:
if relunit.get("primary", "False").lower() == "true":
principal_unitname = relunit["__unit__"]
break
nagios_hostname = "{}{}".format(host_context, principal_unitname)
nagios_hostname = nagios_hostname.replace("/", "-")
return nagios_hostname
def __init__(self):
procs = self.proc_count()
if hookenv.config('procs') == "auto":
proc_thresholds = "-k -w {} -c {}".format(25 * procs + 100,
50 * procs + 100)
else:
proc_thresholds = hookenv.config('procs')
if hookenv.config('load') == 'auto':
# Give 1min load alerts higher thresholds than 15 min load alerts
warn_multipliers = (4, 2, 1)
crit_multipliers = (8, 4, 2)
load_thresholds = ('-w %s -c %s') \
% (','.join([str(m * procs) for m in warn_multipliers]),
','.join([str(m * procs) for m in crit_multipliers]))
else:
load_thresholds = hookenv.config('load')
if hookenv.config('disk_root'):
disk_root_thresholds = hookenv.config('disk_root') + " -p / "
else:
disk_root_thresholds = ''
pkg_plugin_dir = '/usr/lib/nagios/plugins/'
local_plugin_dir = '/usr/local/lib/nagios/plugins/'
checks = [
{
'description': 'Root disk',
'cmd_name': 'check_disk_root',
'cmd_exec': pkg_plugin_dir + 'check_disk',
'cmd_params': disk_root_thresholds,
},
{
'description': 'Number of Zombie processes',
'cmd_name': 'check_zombie_procs',
'cmd_exec': pkg_plugin_dir + 'check_procs',
'cmd_params': hookenv.config('zombies'),
},
{
'description': 'Number of processes',
'cmd_name': 'check_total_procs',
'cmd_exec': pkg_plugin_dir + 'check_procs',
'cmd_params': proc_thresholds,
},
{
'description': 'System Load',
'cmd_name': 'check_load',
'cmd_exec': pkg_plugin_dir + 'check_load',
'cmd_params': load_thresholds,
},
{
'description': 'Number of Users',
'cmd_name': 'check_users',
'cmd_exec': pkg_plugin_dir + 'check_users',
'cmd_params': hookenv.config('users'),
},
{
'description': 'Swap',
'cmd_name': 'check_swap',
'cmd_exec': pkg_plugin_dir + 'check_swap',
'cmd_params': hookenv.config('swap'),
},
{
'description': 'Swap Activity',
'cmd_name': 'check_swap_activity',
'cmd_exec': local_plugin_dir + 'check_swap_activity',
'cmd_params': hookenv.config('swap_activity'),
},
{
'description': 'Memory',
'cmd_name': 'check_mem',
'cmd_exec': local_plugin_dir + 'check_mem.pl',
'cmd_params': hookenv.config('mem'),
},
# {
# 'description': 'Connnection tracking table',
# 'cmd_name': 'check_conntrack',
# 'cmd_exec': local_plugin_dir + 'check_conntrack.sh',
# 'cmd_params': hookenv.config('conntrack'),
# },
]
self['checks'] = []
sub_postfix = str(hookenv.config("sub_postfix"))
# Automatically use _sub for checks shipped on a unit with the nagios
# charm. Mostly for backwards compatibility.
principal_unit = hookenv.principal_unit()
if sub_postfix == '' and principal_unit:
md = hookenv._metadata_unit(principal_unit)
if md and md.pop('name', None) == 'nagios':
sub_postfix = '_sub'
for check in checks:
# This can be used to clean up old files before rendering the new ones
check['matching_files'] = glob.glob(
'/etc/nagios/nrpe.d/{}*.cfg'.format(check['cmd_name']))
check['description'] += " (sub)"
check['cmd_name'] += sub_postfix
self['checks'].append(check)
def get_minion_id():
config = hookenv.config()
if config['unit-as-id']:
return hookenv.principal_unit().replace('/', '-')
else:
return socket.getfqdn()
def __init__(self):
"""Set dict values."""
procs = self.proc_count()
if hookenv.config("procs") == "auto":
proc_thresholds = "-k -w {} -c {}".format(25 * procs + 100,
50 * procs + 100)
else:
proc_thresholds = hookenv.config("procs")
if hookenv.config("load") == "auto":
# Give 1min load alerts higher thresholds than 15 min load alerts
warn_multipliers = (4, 2, 1)
crit_multipliers = (8, 4, 2)
load_thresholds = ("-w %s -c %s") % (
",".join([str(m * procs) for m in warn_multipliers]),
",".join([str(m * procs) for m in crit_multipliers]),
)
else:
load_thresholds = hookenv.config("load")
if hookenv.config("disk_root"):
disk_root_thresholds = hookenv.config("disk_root") + " -p / "
else:
disk_root_thresholds = ""
pkg_plugin_dir = "/usr/lib/nagios/plugins/"
local_plugin_dir = "/usr/local/lib/nagios/plugins/"
checks = [
{
"description": "Root disk",
"cmd_name": "check_disk_root",
"cmd_exec": pkg_plugin_dir + "check_disk",
"cmd_params": disk_root_thresholds,
},
{
"description": "Number of Zombie processes",
"cmd_name": "check_zombie_procs",
"cmd_exec": pkg_plugin_dir + "check_procs",
"cmd_params": hookenv.config("zombies"),
},
{
"description": "Number of processes",
"cmd_name": "check_total_procs",
"cmd_exec": pkg_plugin_dir + "check_procs",
"cmd_params": proc_thresholds,
},
{
"description": "System Load",
"cmd_name": "check_load",
"cmd_exec": pkg_plugin_dir + "check_load",
"cmd_params": load_thresholds,
},
{
"description": "Number of Users",
"cmd_name": "check_users",
"cmd_exec": pkg_plugin_dir + "check_users",
"cmd_params": hookenv.config("users"),
},
{
"description": "Swap",
"cmd_name": "check_swap",
"cmd_exec": pkg_plugin_dir + "check_swap",
"cmd_params": hookenv.config("swap"),
},
{
"description": "Swap Activity",
"cmd_name": "check_swap_activity",
"cmd_exec": local_plugin_dir + "check_swap_activity",
"cmd_params": hookenv.config("swap_activity"),
},
{
"description": "Memory",
"cmd_name": "check_mem",
"cmd_exec": local_plugin_dir + "check_mem.pl",
"cmd_params": hookenv.config("mem"),
},
{
"description": "Connnection tracking table",
"cmd_name": "check_conntrack",
"cmd_exec": local_plugin_dir + "check_conntrack.sh",
"cmd_params": hookenv.config("conntrack"),
},
{
"description": "XFS Errors",
"cmd_name": "check_xfs_errors",
"cmd_exec": local_plugin_dir + "check_xfs_errors.py",
"cmd_params": hookenv.config("xfs_errors"),
},
]
if not is_container():
arp_check = {
"description": "ARP cache entries",
"cmd_name": "check_arp_cache",
"cmd_exec": os.path.join(local_plugin_dir,
"check_arp_cache.py"),
# Specify params here to enable the check, not required otherwise.
"cmd_params": "-w 60 -c 80",
}
checks.append(arp_check)
ro_filesystem_excludes = hookenv.config("ro_filesystem_excludes")
if ro_filesystem_excludes == "":
# specify cmd_params = '' to disable/remove the check from nrpe
check_ro_filesystem = {
"description":
"Readonly filesystems",
"cmd_name":
"check_ro_filesystem",
"cmd_exec":
os.path.join(local_plugin_dir, "check_ro_filesystem.py"),
"cmd_params":
"",
}
else:
check_ro_filesystem = {
"description":
"Readonly filesystems",
"cmd_name":
"check_ro_filesystem",
"cmd_exec":
os.path.join(local_plugin_dir, "check_ro_filesystem.py"),
"cmd_params":
"-e {}".format(hookenv.config("ro_filesystem_excludes")),
}
checks.append(check_ro_filesystem)
if hookenv.config("lacp_bonds").strip():
for bond_iface in hookenv.config("lacp_bonds").strip().split():
if os.path.exists("/sys/class/net/{}".format(bond_iface)):
description = "LACP Check {}".format(bond_iface)
cmd_name = "check_lacp_{}".format(bond_iface)
cmd_exec = local_plugin_dir + "check_lacp_bond.py"
cmd_params = "-i {}".format(bond_iface)
lacp_check = {
"description": description,
"cmd_name": cmd_name,
"cmd_exec": cmd_exec,
"cmd_params": cmd_params,
}
checks.append(lacp_check)
if hookenv.config("netlinks"):
ifaces = yaml.safe_load(hookenv.config("netlinks"))
d_ifaces = self.parse_netlinks(ifaces)
for iface in d_ifaces:
description = "Netlinks status ({})".format(iface)
cmd_name = "check_netlinks_{}".format(iface)
cmd_exec = local_plugin_dir + "check_netlinks.py"
cmd_params = d_ifaces[iface]
netlink_check = {
"description": description,
"cmd_name": cmd_name,
"cmd_exec": cmd_exec,
"cmd_params": cmd_params,
}
checks.append(netlink_check)
self["checks"] = []
sub_postfix = str(hookenv.config("sub_postfix"))
# Automatically use _sub for checks shipped on a unit with the nagios
# charm. Mostly for backwards compatibility.
principal_unit = hookenv.principal_unit()
if sub_postfix == "" and principal_unit:
md = hookenv._metadata_unit(principal_unit)
if md and md.pop("name", None) == "nagios":
sub_postfix = "_sub"
nrpe_config_sub_tmpl = "/etc/nagios/nrpe.d/{}_*.cfg"
nrpe_config_tmpl = "/etc/nagios/nrpe.d/{}.cfg"
for check in checks:
# This can be used to clean up old files before rendering the new
# ones
nrpe_configfiles_sub = nrpe_config_sub_tmpl.format(
check["cmd_name"])
nrpe_configfiles = nrpe_config_tmpl.format(check["cmd_name"])
check["matching_files"] = glob.glob(nrpe_configfiles_sub)
check["matching_files"].extend(glob.glob(nrpe_configfiles))
check["description"] += " (sub)"
check["cmd_name"] += sub_postfix
self["checks"].append(check)
def __init__(self):
procs = self.proc_count()
if hookenv.config('procs') == "auto":
proc_thresholds = "-k -w {} -c {}".format(25 * procs + 100,
50 * procs + 100)
else:
proc_thresholds = hookenv.config('procs')
if hookenv.config('load') == 'auto':
# Give 1min load alerts higher thresholds than 15 min load alerts
warn_multipliers = (4, 2, 1)
crit_multipliers = (8, 4, 2)
load_thresholds = ('-w %s -c %s') \
% (','.join([str(m * procs) for m in warn_multipliers]),
','.join([str(m * procs) for m in crit_multipliers]))
else:
load_thresholds = hookenv.config('load')
if hookenv.config('disk_root'):
disk_root_thresholds = hookenv.config('disk_root') + " -p / "
else:
disk_root_thresholds = ''
pkg_plugin_dir = '/usr/lib/nagios/plugins/'
local_plugin_dir = '/usr/local/lib/nagios/plugins/'
checks = [
{
'description': 'Root disk',
'cmd_name': 'check_disk_root',
'cmd_exec': pkg_plugin_dir + 'check_disk',
'cmd_params': disk_root_thresholds,
},
{
'description': 'Number of Zombie processes',
'cmd_name': 'check_zombie_procs',
'cmd_exec': pkg_plugin_dir + 'check_procs',
'cmd_params': hookenv.config('zombies'),
},
{
'description': 'Number of processes',
'cmd_name': 'check_total_procs',
'cmd_exec': pkg_plugin_dir + 'check_procs',
'cmd_params': proc_thresholds,
},
{
'description': 'System Load',
'cmd_name': 'check_load',
'cmd_exec': pkg_plugin_dir + 'check_load',
'cmd_params': load_thresholds,
},
{
'description': 'Number of Users',
'cmd_name': 'check_users',
'cmd_exec': pkg_plugin_dir + 'check_users',
'cmd_params': hookenv.config('users'),
},
{
'description': 'Swap',
'cmd_name': 'check_swap',
'cmd_exec': pkg_plugin_dir + 'check_swap',
'cmd_params': hookenv.config('swap'),
},
{
'description': 'Swap Activity',
'cmd_name': 'check_swap_activity',
'cmd_exec': local_plugin_dir + 'check_swap_activity',
'cmd_params': hookenv.config('swap_activity'),
},
{
'description': 'Memory',
'cmd_name': 'check_mem',
'cmd_exec': local_plugin_dir + 'check_mem.pl',
'cmd_params': hookenv.config('mem'),
},
{
'description': 'Connnection tracking table',
'cmd_name': 'check_conntrack',
'cmd_exec': local_plugin_dir + 'check_conntrack.sh',
'cmd_params': hookenv.config('conntrack'),
},
{
'description': 'XFS Errors',
'cmd_name': 'check_xfs_errors',
'cmd_exec': local_plugin_dir + 'check_xfs_errors.py',
'cmd_params': hookenv.config('xfs_errors'),
},
]
if not is_container():
arp_check = {
'description': 'ARP cache entries',
'cmd_name': 'check_arp_cache',
'cmd_exec': os.path.join(local_plugin_dir,
'check_arp_cache.py'),
'cmd_params':
'-w 60 -c 80', # Specify params here to enable the check, not required otherwise.
}
checks.append(arp_check)
ro_filesystem_excludes = hookenv.config('ro_filesystem_excludes')
if ro_filesystem_excludes == '':
# specify cmd_params = '' to disable/remove the check from nrpe
check_ro_filesystem = {
'description':
'Readonly filesystems',
'cmd_name':
'check_ro_filesystem',
'cmd_exec':
os.path.join(local_plugin_dir, 'check_ro_filesystem.py'),
'cmd_params':
'',
}
else:
check_ro_filesystem = {
'description':
'Readonly filesystems',
'cmd_name':
'check_ro_filesystem',
'cmd_exec':
os.path.join(local_plugin_dir, 'check_ro_filesystem.py'),
'cmd_params':
'-e {}'.format(hookenv.config('ro_filesystem_excludes')),
}
checks.append(check_ro_filesystem)
if hookenv.config('lacp_bonds').strip():
for bond_iface in hookenv.config('lacp_bonds').strip().split():
if os.path.exists('/sys/class/net/{}'.format(bond_iface)):
description = 'LACP Check {}'.format(bond_iface)
cmd_name = 'check_lacp_{}'.format(bond_iface)
cmd_exec = local_plugin_dir + 'check_lacp_bond.py'
cmd_params = '-i {}'.format(bond_iface)
lacp_check = {
'description': description,
'cmd_name': cmd_name,
'cmd_exec': cmd_exec,
'cmd_params': cmd_params
}
checks.append(lacp_check)
if hookenv.config('netlinks'):
ifaces = yaml.safe_load(hookenv.config('netlinks'))
d_ifaces = self.parse_netlinks(ifaces)
for iface in d_ifaces:
description = 'Netlinks status ({})'.format(iface)
cmd_name = 'check_netlinks_{}'.format(iface)
cmd_exec = local_plugin_dir + 'check_netlinks.py'
cmd_params = d_ifaces[iface]
netlink_check = {
'description': description,
'cmd_name': cmd_name,
'cmd_exec': cmd_exec,
'cmd_params': cmd_params
}
checks.append(netlink_check)
self['checks'] = []
sub_postfix = str(hookenv.config("sub_postfix"))
# Automatically use _sub for checks shipped on a unit with the nagios
# charm. Mostly for backwards compatibility.
principal_unit = hookenv.principal_unit()
if sub_postfix == '' and principal_unit:
md = hookenv._metadata_unit(principal_unit)
if md and md.pop('name', None) == 'nagios':
sub_postfix = '_sub'
NRPE_CONFIG_SUB_TMPL = '/etc/nagios/nrpe.d/{}_*.cfg'
NRPE_CONFIG_TMPL = '/etc/nagios/nrpe.d/{}.cfg'
for check in checks:
# This can be used to clean up old files before rendering the new
# ones
nrpe_configfiles_sub = NRPE_CONFIG_SUB_TMPL.format(
check['cmd_name'])
nrpe_configfiles = NRPE_CONFIG_TMPL.format(check['cmd_name'])
check['matching_files'] = glob.glob(nrpe_configfiles_sub)
check['matching_files'].extend(glob.glob(nrpe_configfiles))
check['description'] += " (sub)"
check['cmd_name'] += sub_postfix
self['checks'].append(check)