RHV / oVirt / OLVM Monitoring
- LPAR2RRD can be hosted on any Unix or Linux Operating system
- Perl: arbitrary version coming with the OS with some additional modules, more below
- Apache or any other Web server
Skip it in case of configuring
Virtual Appliance
HW sizing
User creation
- create lpar2rrd user under root:
# useradd -c "LPAR2RRD user" -m lpar2rrd
# chmod 755 /home/lpar2rrd
- Increase limits for user lpar2rrd and the WEB server user (under root)
- AIX
# chdev -l sys0 -a maxuproc=2000
# chuser nofiles=32768 data=-1 stack=-1 rss=-1 lpar2rrd
# chuser data=-1 stack=-1 rss=-1 apache
- Linux
# vi /etc/security/limits.conf
lpar2rrd hard stack -1
lpar2rrd soft stack -1
lpar2rrd hard data -1
lpar2rrd soft data -1
lpar2rrd hard nofile 32768
lpar2rrd soft nofile 32768
lpar2rrd hard nproc 5000
lpar2rrd soft nproc 5000
apache hard stack -1
apache soft stack -1
apache hard data -1
apache soft data -1
If you have already running
STOR2RRD on the same host then skip to
Web tab.
Linux RedHat, CentOS
Linux Debian, Ubuntu
SuSE
# zypper install rrdtool perl-rrdtool apache2
# zypper install perl-TimeDate perl-XML-Simple perl-XML-SAX perl-XML-LibXML perl-CGI perl-LWP-Protocol-https perl-libwww-perl perl-IO-Tty
# zypper install perl-PDF-API2 perl-JSON-XS
# zypper install ed bc libxml2-2 sharutils
AIX
Solaris
Troubleshooting
If you get error durring device connection test or in error log like:
- Missing LWP::Protocol::https
- Connection reset by peer
- SSL negotiation failed
then follow this docu to fix it
Skip it in case of configuring
Virtual Appliance
Optional configuration of
authorization in Apache. You can proceed it after Apache access works without authorization prompt as per below cfg.
Apache download
- Linux CentOS, RedHat
# yum install httpd
- Linux Debian, Ubuntu
# apt-get install httpd
Apache configuration
Apache start / restart
Command depends on Apache version, one of these should work:
# apachectl restart
# /opt/freeware/apache/sbin/apachectl restart
# /etc/init.d/httpd restart
# service apache2 restart
If you have firewall enabled then enable LPAR2RRD communication by:
# firewall-cmd --add-service=http --permanent
# firewall-cmd --add-service=https --permanent
# firewall-cmd --add-port=8162/tcp --permanent
# firewall-cmd --reload
Test web pages
Point your web browser to
http://<your lpar2rrd host>/lpar2rrd/ as soon as you configure LPAR2RRD
Do not forget to ensure that Apache starts after the OS reboot (there must be a starting script in /etc/rc.... )
Apache configuration per platform and version
-
Linux CentOS, RedHat
Append at the end of /etc/httpd/conf/httpd.conf following
# vi /etc/httpd/conf/httpd.conf
AddHandler cgi-script .sh
# DocumentRoot "/home/lpar2rrd/lpar2rrd/www/"
Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/"
<Directory "/home/lpar2rrd/lpar2rrd/www/">
AllowOverride
Options Indexes FollowSymLinks
Require all granted
</Directory>
# CGI-BIN
ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/"
<Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi">
AllowOverride
SetHandler cgi-script
Options ExecCGI FollowSymLinks
Require all granted
</Directory>
-
Linux Debian, Ubuntu : Apache2 (2.4+)
Enable CGI-BIN and optionally even SSL if it is required
# a2enmod cgi
# a2enmod ssl
Append this at the end of /etc/apache2/apache2.conf
# vi /etc/apache2/apache2.conf
AddHandler cgi-script .sh
Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/"
<Directory "/home/lpar2rrd/lpar2rrd/www/">
Options Indexes FollowSymLinks
Require all granted
</Directory>
# CGI-BIN
ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/"
<Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi">
AllowOverride None
Options +ExecCGI +SymLinksIfOwnerMatch
Require all granted
SetHandler cgi-script
</Directory>
-
SuSE
Append at the end of /etc/apache2/httpd.conf following
# vi /etc/apache2/httpd.conf
AddHandler cgi-script .sh
Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/"
<Directory "/home/lpar2rrd/lpar2rrd/www/">
Options Indexes FollowSymLinks
Require all granted
</Directory>
# CGI-BIN
ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/"
<Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi">
AllowOverride None
Options +ExecCGI +SymLinksIfOwnerMatch
Require all granted
SetHandler cgi-script
</Directory>
-
Apache 2.4+ generally
Configure httpd.conf, it might be in different locations (depends of distribution)
- /etc/httpd/httpd.conf
- /etc/httpd/conf/httpd.conf
- /etc/opt/freeware/apache/httpd.conf (AIX)
- /opt/freeware/etc/httpd/httpd.conf (AIX)
- /opt/freeware/etc/httpd/conf/httpd.conf (AIX)
- /etc/apache2/apache2.conf
- Verify alias_module and cgi_module is loaded (uncommented it, the path can be different)
LoadModule alias_module /opt/freeware/lib/httpd/modules/mod_alias.so
LoadModule cgi_module /opt/freeware/lib/httpd/modules/mod_cgi.so
- cgi_module could depend on mpm_prefork_module like here.
Allow it as well (uncomment it) and disable mpm_worker_module, mpm_event_module
LoadModule mpm_prefork_module /opt/freeware/lib/httpd/modules/mod_mpm_prefork.so
# LoadModule mpm_worker_module /opt/freeware/lib/httpd/modules/mod_mpm_worker.so
# LoadModule mpm_event_module modules/mod_mpm_event.so
<IfModule mpm_prefork_module>
LoadModule cgi_module /opt/freeware/lib/httpd/modules/mod_cgi.so
</IfModule>
- Append this at the end of httpd.conf
AddHandler cgi-script .sh
Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/"
<Directory "/home/lpar2rrd/lpar2rrd/www/">
Options Indexes FollowSymLinks
Require all granted
</Directory>
# CGI-BIN
ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/"
<Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi">
AllowOverride None
SetHandler cgi-script
Options ExecCGI FollowSymLinks
Require all granted
</Directory>
Sometimes appears necessary to remove "Require all granted" lines in both directives.
-
Apache 1.3 - 2.3
Configure httpd.conf, it might be in different locations (depends of distribution)
- /etc/httpd/httpd.conf
- /etc/httpd/conf/httpd.conf
# vi /etc/opt/freeware/apache/httpd.conf
Alias /lpar2rrd "/home/lpar2rrd/lpar2rrd/www/"
<Directory "/home/lpar2rrd/lpar2rrd/www/">
Options Indexes FollowSymLinks
Order allow,deny
Allow from all
</Directory>
# CGI-BIN
ScriptAlias /lpar2rrd-cgi/ "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi/"
<Directory "/home/lpar2rrd/lpar2rrd/lpar2rrd-cgi">
AllowOverride None
Options ExecCGI FollowSymLinks
Order allow,deny
Allow from all
</Directory>
-
SELinux changes
You need to disable the SELinux service protection to be able to utilize basic web services.
You must do it in case you get "(13)Permission denied:" in Apache error_log.
You have 2 options:
Follow SELinux configuration in case you want to enable SELinux with our tools
Skip it in case of configuring
Virtual Appliance
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
- 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 jobs for oVirt in place (upgrade script might do it automatically)
Skip it on the Virtual Appliance, it is already there.
$ crontab -l | grep "load_ovirt.sh"
$
Add it if it does not exist like above
$ crontab -e
# oVirt/RHV support
0,20,40 * * * * /home/lpar2rrd/lpar2rrd/load_ovirt.sh > /home/lpar2rrd/lpar2rrd/load_ovirt.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
OS agent is add-on feature for monitoring from operating system level.
It is monitoring CPU, memory utilization, paging, LAN and SAN traffic on all adapters.
It requires the OS agent deployment to every monitored VM or KVM host.
The agent is written in Perl and calls basic OS commands to obtain required statistics like vmstat, iostat.
Additional information about the OS agent:
Prerequisites
OS agent installation (client)
-
Get the latest OS agent from download page
- Linux installation under root
# rpm -Uvh lpar2rrd-agent-6.00-0.noarch.rpm
# rpm -qa|grep lpar2rrd-agent
lpar2rrd-agent-6.00-0
- Linux Debian
# apt-get install lpar2rrd-agent_6.00-0_all.deb
lpar2rrd-agent-6.00-0
- Solaris x86 installation under root:
# gunzip lpar2rrd-agent-6.00-0.solaris-i86pc.tar.gz
# tar xf lpar2rrd-agent-6.00-0.solaris-i86pc.tar
# pkgadd -d .
The following packages are available:
1 lpar2rrd-agent LPAR2RRD OS agent 6.00
(i86pc) 6.00
...
Solaris upgrade under root:
# pkgrm lpar2rrd-agent
# pkgadd -d .
- Schedule its run every minute from the crontab on every VM.
This line must be placed into lpar2rrd crontab:
# su - lpar2rrd
$ crontab -e
* * * * * /usr/bin/perl /opt/lpar2rrd-agent/lpar2rrd-agent.pl <LPAR2RRD-SERVER> > /var/tmp/lpar2rrd-agent.out 2>&1
Replace <LPAR2RRD-SERVER> by hostname of your LPAR2RRD server.
-
You might need to add lpar2rrd user into /var/adm/cron/cron.allow under root user if above "crontab -e" fails.
# echo "lpar2rrd" >> /var/adm/cron/cron.allow
LPAR2RRD server (daemon)
-
Edit etc/lpar2rrd.cfg and set following (if it is not already set):
$ vi /home/lpar2rrd/lpar2rrd/etc/lpar2rrd.cfg
LPAR2RRD_AGENT_DAEMON=1
-
The daemon is started when load.sh starts
$ ./load.sh
Starting LPAR2RRD daemon on port:8162
...
- Assure it is running and listening on port 8162:
$ ps -ef|grep lpar2rrd-daemon
lpar2rrd 10617010 1 0 Mar 16 - 0:00 /usr/bin/perl -w /home/lpar2rrd/lpar2rrd/bin/lpar2rrd-daemon.pl
$ netstat -an| grep 8162
tcp4 0 0 *.8162 *.* LISTEN
-
OS agent data graphs will appear in the UI, use Ctrl-F5 to refresh your web browser
Troubleshooting
-
Client (agent) side:
-
Test if communication through the LAN is allowed.
$ telnet <LPAR2RRD-SERVER> 8162
Connected to 192.168.1.1 .
Escape character is '^]'.
This is ok, exit either Ctrl-C or ^].
-
Check following agent files:
data store: /var/tmp/lpar2rrd-agent-*.txt
error log: /var/tmp/lpar2rrd-agent-*.err
output log: /var/tmp/lpar2rrd-agent.out
-
run the agent from cmd line:
$ /usr/bin/perl /opt/lpar2rrd-agent/lpar2rrd-agent.pl -d <LPAR2RRD-SERVER>
...
Agent send : yes : forced by -d
Agent send slp: sending wait: 4
OS agent working for server: <LPAR2RRD-SERVER>
store file for sending is /var/tmp/lpar2rrd-agent-<LPAR2RRD-SERVER>-lpar2rrd.txt
It means that data has been sent to the server, all is fine
Here is example when the agent is not able to sent data :
$ /usr/bin/perl /opt/lpar2rrd-agent/lpar2rrd-agent.pl -d <LPAR2RRD-SERVER>
...
Agent send : yes : forced by -d
Agent send slp: sending wait: 1
OS agent working for server: <LPAR2RRD-SERVER>
store file for sending is /var/tmp/lpar2rrd-agent-<LPAR2RRD-SERVER>-lpar2rrd.txt
Agent timed out after : 50 seconds /opt/lpar2rrd-agent/lpar2rrd-agent.pl:265
It means that the agent could not contact the server.
Check communication, port, above telnet example, DNS resolution of the server etc.
-
Server side:
- test if the daemon on LPAR2RRD server is running, and checking the logs
$ ps -ef|grep lpar2rrd-daemon
lpar2rrd 10617010 1 0 Mar 16 - 0:00 /usr/bin/perl -w /home/lpar2rrd/lpar2rrd/bin/lpar2rrd-daemon.pl
$ cd /home/lpar2rrd/lpar2rrd
$ tail logs/error.log-daemon
$ tail logs/daemon.out
new server has been found and registered: Linux (lpar=linuxhost01)
mkdir : /lpar2rrd/data/Linux/no_hmc/linuxhost01/
It means that new OS agent has been registered from linuxhost01 (Linux stand-alone example)
-
Test if OS agent data is being stored on the LPAR2RRD server and have actual timestamp:
$ cd /home/lpar2rrd/lpar2rrd
$ ls -l data/<server name>/*/<VM name>/*mmm
-rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<VM name>/cpu.mmm
-rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<VM name>/lan-en1.mmm
-rw-r--r-- 2 lpar2rrd staff 10790264 Mar 17 16:16 data/<server name>/no_hmc/<VM name>/mem.mmm
-rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<VM name>/pgs.mmm
-rw-r--r-- 2 lpar2rrd staff 7193736 Mar 17 16:16 data/<server name>/no_hmc/<VM name>/san-vscsi0.mmm
-rw-r--r-- 2 lpar2rrd staff 3597208 Mar 17 16:16 data/<server name>/no_hmc/<VM name>/san_resp-vscsi0.mmm
$ find data -name mem.mmm -exec ls -l {} \;
...
-
In case of a problem check our forum or contact us via support@lpar2rrd.com.
We would need this data for start of troubleshooting.
Notes
You will not need to upgrade LPAR2RRD agents regularly with each LPAR2RRD upgrade.
Read release notes if that is necessary.
Check OS agent upgrade steps.
Due to a bug in LPAR2RRD v7.50 you will not be able to add new monitored oVirt/RHV instance
Upgrade to
LPAR2RRD v7.51-1 to fix it
Implementation is agent less.
Data source is ovirt_engine_history database which is part of Data Warehouse on oVirt/RHV Virtualization Manager.
Tool accesses the ovirt_engine_history database remotely via its SQL API.
ovirt_engine_history database contains only historical performance data. There is only the admin account which we use.
Due to API changes in RHV 4.5 use
LPAR2RRD v 7.42-13 or newer, olders do not work
OS Prerequisites
Database access
Each Virtualization Manager has its own randomly generated password for ovirt_engine_history database.
To get the database password, you have to connect to your RHV / oVirt engine via SSH and run this command:
# grep DWH_DB_PASSWORD /etc/ovirt-engine-dwh/ovirt-engine-dwhd.conf.d/10-setup-database.conf
DB username should be ovirt_engine_history by default, check it with this command:
# grep DWH_DB_USER /etc/ovirt-engine-dwh/ovirt-engine-dwhd.conf.d/10-setup-database.conf
ovirt_engine_history
Attach oVirt / RHV
-
All is configured from the UI.
- Assure you have a cron jobs for oVirt in place (upgrade script might do it automatically)
Skip it on the Virtual Appliance, it is already there.
$ crontab -l | grep "load_ovirt.sh"
$
Add it if it does not exist like above
$ crontab -e
# oVirt/RHV support
0,20,40 * * * * /home/lpar2rrd/lpar2rrd/load_ovirt.sh > /home/lpar2rrd/lpar2rrd/load_ovirt.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.