Nutanix Performance Monitoring

Nutanix Monitoring

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

Prerequisites
Web
LPAR2RRD
Nutanix

HW sizing

Consider usage of our brand new full-stack infrastructure monitoring tool XorMon Next Generation as LPAR2RRD replacement.
It brings a new level of infrastructure monitoring by relying on a modern technology stack.
In particular, reporting, exporting, alerting and presentation capabilities are unique on the market.

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

$ 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).

Attach Prism Element/Central hosts

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

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 (all under lpar2rrd user)

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 /etc/cron.allow (Linux) or /var/adm/cron/cron.allow (AIX) if 'crontab -e' command fails
Allow it for lpar2rrd user as root user.
```
# echo "lpar2rrd" >> /etc/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