- 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)
- 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
AIX is not supported by AWS SDK, use Linux for hosting of LPAR2RRD AWS monitoring
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
There were some major
enhancements recently, ideally
upgrade to LPAR2RRD
v7.31-13 (in case there is not yet released v7.40).
Implementation is agentless, all data is gathered from Kubernetes CLI.
Create a lpar2rrd serviceaccount
$ kubectl create serviceaccount lpar2rrd
Create a clusterrole
Create file ClusterRole.yml with this content:
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: lpar2rrd
rules:
- apiGroups: ["","metrics.k8s.io"]
resources: ["pods","nodes","services","nodes/proxy", "endpoints", "namespaces"]
verbs: ["get", "watch", "list"]
- nonResourceURLs: ["/metrics"]
verbs: ["get"]
Apply it by:
$ kubectl apply -f ClusterRole.yml
Create a clusterrolebinding
Create file ClusterRoleBinding.yml with this content:
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: lpar2rrd
subjects:
- kind: ServiceAccount
name: lpar2rrd
namespace: default
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: lpar2rrd
Apply it by:
$ kubectl apply -f ClusterRoleBinding.yml
Get lpar2rrd token
Create file Lpar2rrdSecret.yml with this content:
apiVersion: v1
kind: Secret
metadata:
name: lpar2rrd-token
annotations:
kubernetes.io/service-account.name: lpar2rrd
type: kubernetes.io/service-account-token
Apply it by:
$ kubectl apply -f Lpar2rrdSecret.yml
Get lpar2rrd token:
$ kubectl describe secret lpar2rrd-token
Get cluster endpoint
$ kubectl config view
Configure Kubernetes in LPAR2RRD
-
LPAR2RRD UI ➡ Settings icon ➡ Kubernetes ➡ New
- Make sure cron job for Kubernetes 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_kubernetes.sh"
$
Add following lines to crontab if necessary
$ crontab -e
# Kubernetes support
0,20,40 * * * * /home/lpar2rrd/lpar2rrd/load_kubernetes.sh > /home/lpar2rrd/lpar2rrd/load_kubernetes.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.