Upgrading of Nagios¶
This describes how to update Nagios Core. This guide is about applying this update on tietar (Installation of Tietar).
Current versions¶
Check current version of the OS, Apache and PHP.
$ cat /etc/redhat-release
CentOS release 5.7 (Final)
$ httpd -v
Server version: Apache/2.2.24
$ php -v
PHP 5.1.6
$ yum list installed | grep php
php.i386 5.1.6-27.el5_5.3 installed
php-cli.i386 5.1.6-27.el5_5.3 installed
php-common.i386 5.1.6-27.el5_5.3 installed
Check the current version of Nagios and its packages.
$ yum list installed | grep nagios
nagios.i386 3.5.0-1.el5 installed
nagios-nsca.i386 2.7.2-4.el5.rf installed
nagios-nsca-client.i386 2.7.2-4.el5.rf installed
nagios-plugins.i386 1.4.16-1.el5.rf installed
nagios-plugins-nrpe.i386 2.14-1.el5.rf installed
Check TYPO3 version at http://www.hisparc.nl/typo3/ -> 4.5
Then check the requirements for the new TYPO3 version to see if an update of any package is required.
Upgrade from 3.2.3 to 3.5.0¶
Nagios can be updated to 3.5.0 on CentOS, from the rpm/yum CentALT repo.
$ cd /tmp
$ wget http://centos.alt.ru/repository/centos/5/i386/nagios-3.5.0-1.el5.i386.rpm
$ rpm -i --test nagios-3.5.0-1.el5.i386.rpm
warning: nagios-3.5.0-1.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID e9bc4ae1
file /etc/httpd/conf.d/nagios.conf from install of nagios-3.5.0-1.el5.i386 conflicts with file from package nagios-3.2.3-3.el5.rf.i386
file /etc/nagios/cgi.cfg from install of nagios-3.5.0-1.el5.i386 conflicts with file from package nagios-3.2.3-3.el5.rf.i386
file /etc/nagios/nagios.cfg from install of nagios-3.5.0-1.el5.i386 conflicts with file from package nagios-3.2.3-3.el5.rf.i386
file /etc/nagios/objects/commands.cfg from install of nagios-3.5.0-1.el5.i386 conflicts with file from package nagios-3.2.3-3.el5.rf.i386
file /etc/nagios/objects/timeperiods.cfg from install of nagios-3.5.0-1.el5.i386 conflicts with file from package nagios-3.2.3-3.el5.rf.i386
file /etc/rc.d/init.d/nagios from install of nagios-3.5.0-1.el5.i386 conflicts with file from package nagios-3.2.3-3.el5.rf.i386
file /usr/bin/nagiostats from install of nagios-3.5.0-1.el5.i386 conflicts with file from package nagios-3.2.3-3.el5.rf.i386
Check the current installed versions and available updates.
$ yum list all | grep nagios
nagios.i386 3.2.3-3.el5.rf installed
nagios.i386 3.5.0-1.el5 CentALT
nagios-devel.i386 3.5.0-1.el5 CentALT
nagios-plugins.i386 1.4.15-2.el5.rf installed
nagios-plugins.i386 1.4.16-1.el5.rf rpmforge
nagios-plugins-nrpe.i386 2.12-1.el5.rf installed
nagios-plugins-nrpe.i386 2.14-1.el5.rf rpmforge
nagios-nsca.i386 2.7.2-2.el5.rf installed
nagios-nsca.i386 2.7.2-4.el5.rf rpmforge
nagios-nsca-client.i386 2.7.2-2.el5.rf installed
nagios-nsca-client.i386 2.7.2-4.el5.rf rpmforge
Install update¶
Stop Nagios, NSCA and Apache. (Nagios was running in a screen, not yet as service, so stop it there.)
$ screen -r [..]
^c
$ exit
$ sudo /sbin/service nsca stop
$ sudo /sbin/service httpd stop
$ yum update nagios nagios-plugins nagios-plugins-nrpe nagios-nsca nagios-nsca-client
> y
Updating : nagios
warning: /etc/httpd/conf.d/nagios.conf created as /etc/httpd/conf.d/nagios.conf.rpmnew
warning: /etc/nagios/cgi.cfg created as /etc/nagios/cgi.cfg.rpmnew
warning: /etc/nagios/nagios.cfg created as /etc/nagios/nagios.cfg.rpmnew
warning: /etc/nagios/objects/commands.cfg created as /etc/nagios/objects/commands.cfg.rpmnew
warning: /etc/rc.d/init.d/nagios saved as /etc/rc.d/init.d/nagios.rpmsave
Updated:
nagios.i386 0:3.5.0-1.el5
nagios-plugins.i386 0:1.4.16-1.el5.rf
nagios-plugins-nrpe.i386 0:2.14-1.el5.rf
nagios-nsca.i386 0:2.7.2-4.el5.rf
nagios-nsca-client.i386 0:2.7.2-4.el5.rf
Update config files¶
Using the *.rpmnew files as guides.
/etc/httpd/conf.d/nagios.conf:
- /usr/share/nagios
+ /usr/share/nagios/html
- /usr/lib/nagios/cgi/
+ /usr/lib/nagios/cgi-bin/
/etc/nagios/cgi.cfg:
- physical_html_path=/usr/share/nagios/
+ physical_html_path=/usr/share/nagios/html
+ result_limit=0
/etc/nagios/nagios.cfg:
- log_file=/var/nagios/nagios.log
+ log_file=/var/log/nagios/nagios.log
- object_cache_file=/var/nagios/objects.cache
+ object_cache_file=/var/log/nagios/objects.cache
- precached_object_file=/var/nagios/objects.precache
+ precached_object_file=/var/log/nagios/objects.precache
- resource_file=/etc/nagios/resource.cfg
+ resource_file=/etc/nagios/private/resource.cfg
- status_file=/var/nagios/status.dat
+ status_file=/var/log/nagios/status.dat
? command_file=/var/spool/nagios/cmd/nagios.cmd
- lock_file=/var/run/nagios.pid
+ lock_file=/tmp/nagios.pid
- temp_file=/var/nagios/nagios.tmp
+ temp_file=/var/log/nagios/nagios.tmp
? log_archive_path=/var/log/nagios/archives
- state_retention_file=/var/nagios/retention.dat
+ state_retention_file=/var/log/nagios/retention.dat
+ service_check_timeout_state=c
- p1_file=/usr/bin/p1.pl
+ p1_file=/usr/sbin/p1.pl
- admin_email=davidf@nikhef.nl
- admin_pager=davidf@nikhef.nl
+ admin_email=adelaat@nikhef.nl
+ admin_pager=adelaat@nikhef.nl
/etc/nagios/objects/commands.cfg:
- /var/nagios/host-perfdata.out
- /var/nagios/service-perfdata.out
+ /var/log/nagios/host-perfdata.out
+ /var/log/nagios/service-perfdata.out
/etc/nagios/nsca.cfg:
- command_file=/var/nagios/rw/nagios.cmd
+ command_file=/var/spool/nagios/cmd/nagios.cmd
- alternate_dump_file=/var/nagios/rw/nsca.dump
+ alternate_dump_file=/var/log/nagios/rw/nsca.dump
Verify config¶
$ nagios -v /etc/nagios/nagios.cfg
Fix Nagios Daemon¶
Before the update Nagios gave these errors when trying to start as service:
$ service nagios start
log:
[1365710071] Failed to obtain lock on file /var/run/nagios.pid: Permission denied
[1365710071] Bailing out due to errors encountered while attempting to daemonize... (PID=15845)
From: Failed to obtain lock on file /var/run/nagios.pid
Changing the value of lock_file in /etc/nagios/nagios.cfg from /var/run/nagios.pid to /tmp/nagios.pid allowed the PID to be written and the init script to succeed.
Change lock_file location to a place with read+write permissions.
Start services¶
$ sudo /sbin/service httpd start
$ sudo /sbin/service nagios start
$ sudo /sbin/service nsca start
Upgrade Apache to latest 2.2.x¶
The latest Apache is in the CentALT repository
$ yum list httpd
Installed Packages
httpd.i386 2.2.3-53.el5.centos.3 installed
Available Packages
httpd.i386 2.2.24-1.el5 CentALT
Stop services
$ sudo /sbin/service httpd stop
$ sudo /sbin/service nagios stop
$ sudo /sbin/service nsca stop
Update Apache
$ yum update httpd
Dependencies Resolved
======================================================================
Package Arch Version Repository Size
======================================================================
Updating:
httpd i386 2.2.24-1.el5 CentALT 1.3 M
Installing for dependencies:
apr-util-ldap i386 1.4.1-1.el5 CentALT 14 k
httpd-tools i386 2.2.24-1.el5 CentALT 68 k
Updating for dependencies:
apr-util i386 1.4.1-1.el5 CentALT 82 k
Transaction Summary
======================================================================
Install 2 Package(s)
Upgrade 2 Package(s)
> y
warning: /etc/httpd/conf/httpd.conf created as /etc/httpd/conf/httpd.conf.rpmnew
Dependency Installed:
apr-util-ldap.i386 0:1.4.1-1.el5
httpd-tools.i386 0:2.2.24-1.el5
Updated:
httpd.i386 0:2.2.24-1.el5
Dependency Updated:
apr-util.i386 0:1.4.1-1.el5
Todo: update httpd.conf with new options from httpd.conf.rpmnew
Start services
$ sudo /sbin/service httpd start
$ sudo /sbin/service nagios start
$ sudo /sbin/service nsca start
