Nutanix Monitoring

Skip Prerequisites, Web and LPAR2RRD tabs in case of configuring Virtual Appliance, Docker or a Container

Follow installation procedure for your operating system platform
Implementation is agentless, there are 2 options how to get data, both provide same data set:
  • Prism Central: connect just central host
  • Prism Element: connect all hosts

Prism Element/Central host connectivity

    Allow access from the LPAR2RRD host to all Prism Element/Central hosts port 9440 (HTTPS)
    You might verify it manually like this for each host:
    $ perl /home/lpar2rrd/lpar2rrd/bin/conntest.pl 192.168.1.1 9440
      Connection to "192.168.1.1" on port "9440" is ok
    

Users access

Create a user (preferably lpar2rrd) without any role (system will assign 'View' role by default).
Nutanix user configuration

Attach Prism Element/Central hosts

  • LPAR2RRD UI ➡ Settings icon ➡ Nutanix ➡ New ➡ Select Prism Central or Prism Element
    Nutanix configuration

    Make sure that connection test passes without errors or warnings.

  • Make sure cron job for Nutanix is in place (upgrade script might do it for you automatically)
    Skip this step if you install the Virtual Appliance - it is already taken care of.
    $ crontab -l | grep "load_nutanix.sh"
    $
    
    Add following lines to crontab if necessary
    $ crontab -e
    
    # Nutanix support
    0,20,40 * * * *  /home/lpar2rrd/lpar2rrd/load_nutanix.sh > /home/lpar2rrd/lpar2rrd/load_nutanix.out 2>&1
    
  • Wait 30 minutes and then go to the web UI: http://<your web server>/lpar2rrd/
    Use Ctrl-F5 to refresh the web browser cache.


Install LPAR2RRD server

  • Download the latest LPAR2RRD server
    Upgrade your already running LPAR2RRD instance.

  • Install it:
    # su - lpar2rrd
    $ tar xvf lpar2rrd-7.XX.tar
    $ cd lpar2rrd-7.XX
    $ ./install.sh
    $ cd /home/lpar2rrd/lpar2rrd
    
  • Make sure all Perl modules are in place
    cd /home/lpar2rrd/lpar2rrd
    . etc/lpar2rrd.cfg; $PERL bin/perl_modules_check.pl
    
    If there is missing "LWP::Protocol::https" then check this docu to fix it

  • Enable Apache authorisation
    su - lpar2rrd
    umask 022
    cd /home/lpar2rrd/lpar2rrd
    cp html/.htaccess www
    cp html/.htaccess lpar2rrd-cgi
    
  • Schedule to run it from lpar2rrd crontab (it might already exist there)
    $ crontab -l | grep load.sh
    $
    
    Add if it does not exist as above
    $ crontab -e
    
    # LPAR2RRD UI
    0,30 * * * * /home/lpar2rrd/lpar2rrd/load.sh > /home/lpar2rrd/lpar2rrd/load.out 2>&1 
    
    Assure there is just one such entry in crontab.

  • You might need to add lpar2rrd user into /var/adm/cron/cron.allow (/etc/cron.allow on CentOS 8) if crontab command fails
    Allow it for lpar2rrd user as root user.
    # echo "lpar2rrd" >> /var/adm/cron/cron.allow
    
  • Assure you have a cron job for Nutanix is in place (upgrade script might do it automatically) Skip it on the Virtual Appliance, it is already there.
    $ crontab -l | grep "load_nutanix.sh"
    $
    
    Add it if it does not exist like above
    $ crontab -e
    
    # Nutanix support
    0,20,40 * * * *  /home/lpar2rrd/lpar2rrd/load_nutanix.sh > /home/lpar2rrd/lpar2rrd/load_nutanix.out 2>&1 
    
  • Initial start from cmd line:
    $ cd /home/lpar2rrd/lpar2rrd
    $ ./load.sh
    
  • Go to the web UI: http://<your web server>/lpar2rrd/
    Use Ctrl-F5 to refresh the web browser cache.

Troubleshooting

  • If you have any problems with the UI then check:
    (note that the path to Apache logs might be different, search apache logs in /var)
    tail /var/log/httpd/error_log             # Apache error log
    tail /var/log/httpd/access_log            # Apache access log
    tail /var/tmp/lpar2rrd-realt-error.log    # STOR2RRD CGI-BIN log
    tail /var/tmp/systemd-private*/tmp/lpar2rrd-realt-error.log # STOR2RRD CGI-BIN log when Linux has enabled private temp
    
  • Test of CGI-BIN setup
    umask 022
    cd /home/lpar2rrd/lpar2rrd/
    cp bin/test-healthcheck-cgi.sh lpar2rrd-cgi/
    
    go to the web browser: http://<your web server>/lpar2rrd/test.html
    You should see your Apache, LPAR2RRD, and Operating System variables, if not, then check Apache logs for connected errors