Patching NMIS with 8.4.6G

Owned by Mark Dueck
Last updated: Dec 19, 2013 by alexz (Unlicensed)Version comment
4 min read

There is one major change to the upgrade process which is in the instructions below, the rest of the guide is the same as previous upgrade instructions. The new script, install/update_config_defaults.pl needs to be run at the end of the configuration upgrade to ensure required changes to Config.nmis are made (specifically for this release a newer version of jQuery is being used.

Patch NMIS8 code with the NMIS8.4.6G

#Backup current NMIS code and config including models
DATE=`date "+%Y-%m-%d-%H%M"`
cd /usr/local/nmis8
tar cvf ~/nmis8-backup-$DATE.tar ./admin ./bin ./cgi-bin ./conf ./install ./lib ./menu ./mibs ./models

#Make sure NMIS is working before you patch it.
/usr/local/nmis8/bin/nmis.pl type=collect debug=true node=<node to test>

#Get CP working right. (no prompts)
unalias cp

#Set NMIS version
nmisver=8.4.6g
   
#Unarchive the NMIS tarball
cd ~
tar xvf nmis$nmisver.tar.gz

mkdir /usr/local/nmis8/models-install
 
# Patch the Code Base
cp nmis$nmisver/admin/* /usr/local/nmis8/admin
cp nmis$nmisver/bin/* /usr/local/nmis8/bin
cp nmis$nmisver/cgi-bin/* /usr/local/nmis8/cgi-bin
cp -r nmis$nmisver/mibs/* /usr/local/nmis8/mibs 
cp -r nmis$nmisver/install/* /usr/local/nmis8/install
cp -r nmis$nmisver/lib/* /usr/local/nmis8/lib
cp -r nmis$nmisver/menu/* /usr/local/nmis8/menu
cp nmis$nmisver/models-install/* /usr/local/nmis8/models-install

Checking Model Changes

Recent releases have included many device modelling enhancements, improved graphs and more, if you have made no changes to your models you can overwrite your existing models, otherwise you will need to merge the new models with the existing models, that requires consideration outside this document (git could be your friend here).  To overwrite your existing models:

cp /usr/local/nmis8/models-install/* /usr/local/nmis8/models

Patch NMIS8 Config

Your NMIS installation may have settings that you have changed from the default installation.  If you would like to keep these changes you will need to merge the additional fields that have been added into the stock configuration into your custom configuration.  NMIS provides a tool called updateconfig.pl to help you do this:

# merge changes for new NMIS Config options. 
/usr/local/nmis8/admin/updateconfig.pl /usr/local/nmis8/install/Config.nmis /usr/local/nmis8/conf/Config.nmis
/usr/local/nmis8/admin/updateconfig.pl /usr/local/nmis8/install/Access.nmis /usr/local/nmis8/conf/Access.nmis 

# update default config options that have been changed:
/usr/local/nmis8/install/update_config_defaults.pl /usr/local/nmis8/conf/Config.nmis

Most of the config files will likely be the same as the install version, for these you can just copy the new versions

# copy newer configuration files (check that you don't have local changes to these files before running) 
cp /usr/local/nmis8/install/Tables.nmis /usr/local/nmis8/conf 
cp /usr/local/nmis8/install/Table-*.nmis /usr/local/nmis8/conf 
cp /usr/local/nmis8/install/Logs.nmis /usr/local/nmis8/conf 
cp /usr/local/nmis8/install/Services.nmis /usr/local/nmis8/conf
cp /usr/local/nmis8/install/License.nmis /usr/local/nmis8/conf
cp /usr/local/nmis8/install/Modules.nmis /usr/local/nmis8/conf
cp /usr/local/nmis8/install/Escalations.nmis /usr/local/nmis8/conf
cp /usr/local/nmis8/install/Portal.nmis /usr/local/nmis8/conf
cp /usr/local/nmis8/install/logrotate.conf /usr/local/nmis8/conf

If you haven't changed your users you can update these:

cp /usr/local/nmis8/install/Users.nmis /usr/local/nmis8/conf 
cp /usr/local/nmis8/install/users.dat /usr/local/nmis8/conf

Update Server Configuration

Crontab 

The new crontab which you generate by running this command /usr/local/nmis8/bin/nmis.pl type=crontab

MAILTO=WhoeverYouAre@yourdomain.tld 
######################################################
# NMIS8 Config
######################################################
# Run Statistics Collection
*/5 * * * * /usr/local/nmis8/bin/nmis.pl type=collect mthread=true maxthreads=10
######################################################
# Run Summary Update every 2 minutes
*/2 * * * * /usr/local/nmis8/bin/nmis.pl type=summary
#####################################################
# Run the interfaces 4 times an hour with Thresholding on!!!
# if threshold_poll_cycle is set to false, then enable cron based thresholding
#*/15 * * * * nice /usr/local/nmis8/bin/nmis.pl type=threshold
######################################################
# Run the update once a day 
30 20 * * * nice /usr/local/nmis8/bin/nmis.pl type=update mthread=true maxthreads=10
######################################################
# Check to rotate the logs 4am every day UTC
5 20 * * * /usr/sbin/logrotate /usr/local/nmis8/conf/logrotate.conf
##################################################
# save this crontab every day
0 8 * * * crontab -l > /usr/local/nmis8/conf/crontab.root
########################################
# Run the Reports Weekly Monthly Daily
# daily
0 0 * * * /usr/local/nmis8/bin/run-reports.pl day health
10 0 * * * /usr/local/nmis8/bin/run-reports.pl day top10
30 0 * * * /usr/local/nmis8/bin/run-reports.pl day outage
40 0 * * * /usr/local/nmis8/bin/run-reports.pl day response
45 0 * * * /usr/local/nmis8/bin/run-reports.pl day avail
50 0 * * * /usr/local/nmis8/bin/run-reports.pl day port
# weekly
0 1 * * 0 /usr/local/nmis8/bin/run-reports.pl week health
10 1 * * 0 /usr/local/nmis8/bin/run-reports.pl week top10
30 1 * * 0 /usr/local/nmis8/bin/run-reports.pl week outage
40 1 * * 0 /usr/local/nmis8/bin/run-reports.pl week response
50 1 * * 0 /usr/local/nmis8/bin/run-reports.pl week avail
# monthly
0 2 1 * * /usr/local/nmis8/bin/run-reports.pl month health
10 2 1 * * /usr/local/nmis8/bin/run-reports.pl month top10
30 2 1 * * /usr/local/nmis8/bin/run-reports.pl month outage
40 2 1 * * /usr/local/nmis8/bin/run-reports.pl month response
50 2 1 * * /usr/local/nmis8/bin/run-reports.pl month avail
###########################################

NMIS Configuration

You will need to verify the following configuration options have been set correctly or removed.  You can edit the configuration through the NMIS UI or with your favorite editor "vi /usr/local/nmis8/conf/Config.nmis"

nmis_summary_poll_cycle

There are some updates to improve UI and polling synchronisation.  Check the following configuration option for nmis_summary_poll_cycle, it should be set to false and the summary update added to the crontab.

 'nmis_summary_poll_cycle' => 'false', 

global_nocollect_noDescription

This needs to be set to blank unless you intentionally want it to be "true"

'global_nocollect_noDescription' => '',

fastping_node_poll

We have found this is better set to a lower number, but if your experience has been otherwise, you do not need to change it.

'fastping_node_poll' => '200',

tables_case_sensitive_keys

This config setting "tables_case_sensitive_keys" is redundant, it is being done in the Tables.nmis file now.

File Permissions

Change Config.nmis to tell NMIS to use the new file permission scheme

%hash = (
--SNIP-- 
  'system' => {
  --SNIP--
    'os_execperm' => '0770',
    'os_fileperm' => '0660',

Authentication

We recommend updating the authentication system from apache to htpasswd (so NMIS does authentication instead of Apache). 3 steps need to be taken to change this.

  1. Change Config.nmis to tell NMIS to use htpasswd 

    %hash = (
--SNIP-- 
 'authentication' => {
 --SNIP--
   'auth_method_1' => 'htpasswd',  # <= change this FROM apache TO htpasswd

  2. Backup old apache configGenerate new apache configuration (if you have customised yours edit it and remove the auth portions instead of generating a new one) 

    #backup old config
cd /etc/httpd/conf.d/
cp 00nmis.conf 00nmis.conf.pre-8.4.6G.bak

  3. Create new config to replace old config and restart apache 

    /usr/local/nmis8/bin/nmis.pl type=apache > /etc/httpd/conf.d/00nmis.conf
service httpd restart

Setup SNMP Trap Daemon

NMIS 8.4.6 includes some Cisco and Generic MIBS and has the ability to view the SNMP traps in the NMIS logging tool.

You will need to copy the options file to the right location and restart the daemon.

cp /usr/local/nmis8/install/snmptrapd.options /etc/sysconfig/snmptrapd 
service snmptrapd restart

You can test the MIB resolution with this command

snmptranslate -m ALL -M /usr/local/nmis8/mibs/traps 1.3.6.1.4.1.9.9.43.1.1.6.1.5.34

Which should result in:

CISCO-CONFIG-MAN-MIB::ccmHistoryEventConfigDestination.34

Fix Data Type for Some Counters

Fix Data Type on mib2ip Counters

Run this command to make all the DS's COUNTER instead of GAUGE

/usr/local/nmis8/admin/rrd_tune_mib2ip.pl run=true change=true

 Fix Data Type on TopChanges Counters

 Run this command to make TopChanges the DS's COUNTER instead of GAUGE

/usr/local/nmis8/admin/rrd_tune_topo.pl run=true change=true

Restart Daemons

/usr/local/nmis8/bin/fpingd.pl restart=true

Update the Font Cache

In order to make RRD run faster it really helps to update the font cache 

fc-cache -f -v

Clean up and Test

# optionally audit your config
/usr/local/nmis8/bin/nmis.pl type=audit
# fix your config
/usr/local/nmis8/bin/nmis.pl type=config
# fix permissions
/usr/local/nmis8/admin/fixperms.pl
# test polling
/usr/local/nmis8/bin/nmis.pl type=collect debug=true node=<node to test>