[checkmk-commits] k8s_service_port: new check to monitor ports of Kubernetes services

Module: check_mk Branch: master Commit: f6f33997875531bbf925c3c7a368db7f4d2e959b URL: http://git.mathias-kettner.de/git/?p=check_mk.git;a=commit;h=f6f33997875531… Author: Tom Baerwinkel &lt;tb(a)mathias-kettner.de&gt; Date: Sun Mar 31 15:57:34 2019 +0200 k8s_service_port: new check to monitor ports of Kubernetes services Change-Id: I8d61af850f3deec8134e2c6f854a34e1281583ab --- checkman/k8s_service_port | 14 ++++ checks/k8s_service_port | 71 +++++++++++++++++ cmk/gui/plugins/wato/check_parameters/k8s_port.py | 97 +++++++++++++++++++++++ cmk/special_agents/agent_kubernetes.py | 5 +- 4 files changed, 185 insertions(+), 2 deletions(-) diff --git a/checkman/k8s_service_port b/checkman/k8s_service_port new file mode 100644 index 0000000..28f007b --- /dev/null +++ b/checkman/k8s_service_port @@ -0,0 +1,14 @@ +title: Kubernetes service ports +agents: kubernetes +catalog: containerization/kubernetes +license: GPL +distribution: check_mk +description: + This check monitors the ports of a Kubernetes service. + Levels for expected values can be set via WATO. + +inventory: + One service per port is created. + +item: + The name of the port if given otherwise the port number. \ No newline at end of file diff --git a/checks/k8s_service_port b/checks/k8s_service_port new file mode 100644 index 0000000..e6b875e --- /dev/null +++ b/checks/k8s_service_port @@ -0,0 +1,71 @@ +#!/usr/bin/python +# -*- encoding: utf-8; py-indent-offset: 4 -*- +# +------------------------------------------------------------------+ +# | ____ _ _ __ __ _ __ | +# | / ___| |__ ___ ___| | __ | \/ | |/ / | +# | | | | '_ \ / _ \/ __| |/ / | |\/| | ' / | +# | | |___| | | | __/ (__| < | | | | . \ | +# | \____|_| |_|\___|\___|_|\_\___|_| |_|_|\_\ | +# | | +# | Copyright Mathias Kettner 2018 mk(a)mathias-kettner.de | +# +------------------------------------------------------------------+ +# +# This file is part of Check_MK. +# The official homepage is at http://mathias-kettner.de/check_mk. +# +# check_mk is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation in version 2. check_mk is distributed +# in the hope that it will be useful, but WITHOUT ANY WARRANTY; with- +# out even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. See the GNU General Public License for more de- +# tails. You should have received a copy of the GNU General Public +# License along with GNU Make; see the file COPYING. If not, write +# to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, +# Boston, MA 02110-1301 USA. + + +def k8s_check_value(value, expected, infotext_template): + state = 0 + infotext = infotext_template % value + if expected is not None and value != expected: + state = 2 + infotext += ' (expected %s)' % expected + return state, infotext + + +@get_parsed_item_data +def check_k8s_service_port(item, params, parsed): + yield k8s_check_value( + parsed['port'], + params.get('port'), + 'Port: %s', + ) + yield k8s_check_value( + parsed['target_port'], + params.get('target_port'), + 'Target port: %s', + ) + + if parsed['node_port']: + yield k8s_check_value( + parsed['node_port'], + params.get('node_port'), + 'Node port: %s', + ) + + yield k8s_check_value( + parsed['protocol'], + params.get('protocol'), + 'Protocol: %s', + ) + + +check_info['k8s_service_port'] = { + 'parse_function': parse_k8s, + 'inventory_function': discover(), + 'check_function': check_k8s_service_port, + 'service_description': 'Port %s', + 'group': 'k8s_port', + 'includes': ['k8s.include'], +} diff --git a/cmk/gui/plugins/wato/check_parameters/k8s_port.py b/cmk/gui/plugins/wato/check_parameters/k8s_port.py new file mode 100644 index 0000000..145b210 --- /dev/null +++ b/cmk/gui/plugins/wato/check_parameters/k8s_port.py @@ -0,0 +1,97 @@ +#!/usr/bin/python +# -*- encoding: utf-8; py-indent-offset: 4 -*- +# +------------------------------------------------------------------+ +# | ____ _ _ __ __ _ __ | +# | / ___| |__ ___ ___| | __ | \/ | |/ / | +# | | | | '_ \ / _ \/ __| |/ / | |\/| | ' / | +# | | |___| | | | __/ (__| < | | | | . \ | +# | \____|_| |_|\___|\___|_|\_\___|_| |_|_|\_\ | +# | | +# | Copyright Mathias Kettner 2014 mk(a)mathias-kettner.de | +# +------------------------------------------------------------------+ +# +# This file is part of Check_MK. +# The official homepage is at http://mathias-kettner.de/check_mk. +# +# check_mk is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by +# the Free Software Foundation in version 2. check_mk is distributed +# in the hope that it will be useful, but WITHOUT ANY WARRANTY; with- +# out even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. See the GNU General Public License for more de- +# tails. You should have received a copy of the GNU General Public +# License along with GNU Make; see the file COPYING. If not, write +# to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, +# Boston, MA 02110-1301 USA. + +from cmk.gui.i18n import _ +from cmk.gui.valuespec import ( + Dictionary, + DropdownChoice, + Integer, + TextAscii, +) + +from cmk.gui.plugins.wato import ( + CheckParameterRulespecWithItem, + rulespec_registry, + RulespecGroupCheckParametersApplications, +) + + +(a)rulespec_registry.register +class RulespecCheckgroupParametersK8SResources(CheckParameterRulespecWithItem): + @property + def group(self): + return RulespecGroupCheckParametersApplications + + @property + def check_group_name(self): + return "k8s_port" + + @property + def title(self): + return _("Kubernetes Port") + + @property + def match_type(self): + return "dict" + + @property + def parameter_valuespec(self): + return Dictionary( + elements=[ + ('port', Integer( + title=_('Port'), + minvalue=0, + maxvalue=65535, + )), + ('target_port', Integer( + title=_('Target port'), + minvalue=0, + maxvalue=65535, + )), + ('node_port', Integer( + title=_('Node port'), + minvalue=0, + maxvalue=65535, + )), + ('protocol', + DropdownChoice( + title=_('Protocol'), + choices=[ + ('TCP', _('TCP')), + ('UDP', _('UDP')), + ('HTTP', _('HTTP')), + ('PROXY', _('PROXY')), + ('SCTP', _('SCTP')), + ], + )), + ],) + + @property + def item_spec(self): + return TextAscii( + title=_("Port"), + help=_("Name or number of the port"), + ) diff --git a/cmk/special_agents/agent_kubernetes.py b/cmk/special_agents/agent_kubernetes.py index 036c08d..351e152 100644 --- a/cmk/special_agents/agent_kubernetes.py +++ b/cmk/special_agents/agent_kubernetes.py @@ -311,7 +311,8 @@ class Service(Metadata): def ports(self): # port is the only field that is not optional return { - port.port: { + port.name if port.name else port.port: { + 'port': port.port, 'name': port.name, 'protocol': port.protocol, 'target_port': port.target_port, @@ -1032,7 +1033,7 @@ class ApiData(object): g.join('labels', self.services.labels()) g.join('k8s_selector', self.services.selector()) g.join('k8s_service_info', self.services.infos()) - g.join('k8s_service_ports', self.services.ports()) + g.join('k8s_service_port', self.services.ports()) pod_names = { service_name: { 'names': [pod.name for pod in pods]