Nagios-Monitoring mit check_mk. D. Bucher - WWU Münster

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1 Nagios-Monitoring mit check_mk D. Bucher - WWU Münster

2 check_mk general purpose nagios plugin for data retrieval Reduktion der: Anzahl der Client requests CPU-Last auf dem Nagios Host Automatisches Inventory

3 Struktur 1. aktiver Check auf Host mit check_mk_agent 2. check_mk connection zum Client (holt alle Daten) 3. check_mk analysiert die Daten und extrahiert Performancedaten 4. erzeugt check-results für Nagios

4 Features Auto-Inventory Erzeugung der notwendigen Nagios-Configs Einbindung von Legacy-Nagios-Checks SNMP eigenes GUI (multisite) Clustering

5 Tagging Sortierung und Steuerung von Checks über Hosttags Standard-Tags: ping/tcp/snmp zur Definition der Abfrageart eigene Tags für Host-/Servicgroups, Configs etc.

6 Zentrale Config all_hosts = [ # # alle Rechner sollte fuer V1.1.9i ein Hosttag tragen, dass angibt wie der Host kontaktiert wird tcp snmp ping # Linux-Rechner # "localhost tcp tsmclient", "ftp tcp ftp", "jabber tcp", "idisplaysql tcp sql tsmclient", "ikm-alf tcp", "mail tcp smtpserver", "mysql5 tcp sql tsmclient", "moodlesql tcp sql moodle", "moodlesql-backup tcp sql moodle", "rorvic tcp", "scan2mail tcp smtpserver tsmclient", "secmail tcp smtpserver", "studipmysql tcp sql tsmclient", "tsm01 tcp aix tsmserver",

7 Clientsoftware python Agent für LinuX exe für Windows als rpms, apt und tar.gz verfügbar über xinetd ansprechbar oder per ssh script auch auf anderen Platformen einsetzbar (AIX, HP-UX...)

8 Doku auf check_mk aufbauend: OMD Enthält: check_mk, Nagios, pnp4nagios, nagvis, rrd-cache

9 wwu Nagios- Installation mit Erweiterungen check_mk nagvis pnp4nagios NagiosBP (Business process monitoring)

10 Multisite GUI nagvis pnp4nagios nagios BP Nagios rrdtools Nagios Plugin Nagios Plugin Nagios Plugin HTTP SMTP DNS check_mk TCP TCP SSH SNMP Web Mail DNS Linux Windows AIX Appliances

11 fast alle UniXoiden Systeme überwacht bei neuen Systemen automatische Klientenvorbereitung über cfengine Windows bisher nur ein Proof of Concept- System mehrer Systeme (OS-Mail, Webauftritt, Moodle) in NagiosBP modelliert

12 Demo check_mk/

13 main.mk Details clusters = { "maildisp tcp mailcluster lvs" : [ "zivmaildisp1", "zivmaildisp2" ], "webdisp tcp web lvs" : [ "zivwebdisp1", "zivwebdisp2" ], } host_groups = [... ( 'webapplication-server', [ 'webapp' ], ALL_HOSTS ), ( 'cups-server', [ 'cupsserver' ],! ALL_HOSTS ), service_groups = [ ( "postfix-smtp", ALL_HOSTS, ["Postfix smtp"] ), ( "apache-back", [ "webbackend" ], ALL_HOSTS, ["Apache Status"] ),... define_hostgroups = {!!! 'webapplication-server' : 'Application Server',!!! 'cups-server' : 'CUPS Server', host_contactgroups = [! ( "ftpadmins", ['ftp'], ALL_HOSTS ),

14 main.mk Details host_contactgroups = [! ( "ftpadmins", ['ftp'], ALL_HOSTS ),... service_contactgroups = [ # general ones ( "sysadmins", ALL_HOSTS, ["proc_dsmc"] ), # for the mail system... ( "mailadmins", ['mailcluster'], ALL_HOSTS, ["CPU load"] ), ignored_services = [ ( [ '!cupsserver' ], ALL_HOSTS, [ "CUPS" ] ),... legacy_checks = [ ( ( "check_apachestatus_auto!20!10", "Apache Status", True ), [ "webbackend" ], ALL_HOSTS ), ( ( "check_smtp!-w 1 -c 5", "Postfix smtp", True ), [ "smtpserver" ], ALL_HOSTS ), ( ( "check_nrpe!check_ipvs! ","IPVS IMAP- Connections",True ), [ "mailcluster", "lvs" ], PHYSICAL_HOSTS ),

15 main.mk Details datasource_programs = [ # AIX Systems ( "ssh tsmlm -l root /usr/bin/check_mk_agent", [ 'tsmlm' ] ), # Jumphost ( "ssh zivmailback -l root mmsh zivmailav1g check_mk_agent", [ 'zivmailav1' ] ), checks +=! [ # make sure for lvs dispatchers there is exactly one pulse and one lvsd running ( ["lvs"], PHYSICAL_HOSTS, "ps", "pulse", ( "pulse", 1, 1, 1, 1 ) ), ( ["lvs"], CLUSTER_HOSTS, "ps", "lvsd", ( "/usr/sbin/lvsd", 1, 1, 1, 1 ) ), # tsm client scheduler running ( ["tsmclient"], ALL_HOSTS, "ps", "dsmc", ( "/opt/tivoli/tsm/client/ba/bin/dsmc", 1, 1, 1, 1 ) ), # AV Scanner running ( ["av"], ALL_HOSTS, "ps.perf", "savdid", ("/usr/local/bin/savdid", 1, 1, 90, 100 ) ), ( ["av"], ALL_HOSTS, "ps.perf", "savscand", ("savscand", 0, 0, 90, 100 ) ),

16 main.mk Details # Do an inventory check every 12 hours inventory_check_interval = 720 # minutes # failing inventory checks should just warn inventory_check_severity = 1 check_parameters = [ ( (100, 2500), [ "mail", "secmail", "zivlistserv" ], [ "Postfix Queue" ] ), ( (50, 150), [ 'smtpserver' ], ALL_HOSTS, [ "Postfix Queue" ] ), ( (4000, 5000), [ "zivmailuser06" ], [ "Number of threads" ] ), ( (250, 1000, 86400, ), [ 'cupsserver' ], ALL_HOSTS, [ "CUPS Queue cm8060" ] ), ( (25, 100, 86400, ), [ 'cupsserver' ], ALL_HOSTS, [ "CUPS Queue" ] ), ( ( 96, 97), [ 'webproxy' ], ALL_HOSTS, [ "fs_/" ] ),