Zenoss reverse proxy with Pound (CentOS)

Zenoss don’t support SSL certificates out-of-the-box. If you want to use an SSL connection to your zenoss monitor server the only thing you can do is use an reverse proxy. You can use this howto to install and configure a pound reverse proxy.

Install pound with the EPEL

Install the EPEL (more info about EPEL) repository with these commands:

su -c 'rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm'
yum update

Install pound

yum install pound

Install pound without the EPEL

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/Pound-2.6-2.el6.x86_64.rpm
rpm -ivh Pound-2.6-2.el6.x86_64.rpm

Configure Pound

I had a lot of trouble because I used a real SSL certificate immediately. The cause was I dropped the SSL cert in the wrong linux folder. Best practice is first create a selfsigned SSL, test pound and then replace the selfsigned with a real SSL certificate.

cd /etc/ssl && openssl req -x509 -newkey rsa:1024 -keyout local.server.pem -out local.server.pem -days 365 -nodes

Configure Pound

nano /etc/pound.cfg

Config file:

User "pound"
Group "pound"
Control "/var/lib/pound/pound.cfg"
ListenHTTPS
Address 192.168.0.x
Port    443
Cert    "/etc/ssl/local.server.pem"
End
Service
BackEnd
Address 127.0.0.1
Port    8080
End
End

Now start the pound service

service pound start

Change the Zenoss config the handle the HTTPS traffic

nano /opt/zenoss/etc/zope.conf

Ad these 3 lines:

<cgi-environment>
HTTPS ON
</cgi-environment>

Restart zope

su - zenoss
restart zopectl

Replace the selfsigned SSL with a wildcard SSL (optional)

Create a PFX in windows. Tranfer the PFX to the Zenoss server and tranform the PFX to PEM (Linux certificate format). The command:

openssl pkcs12 -in validcertificate.pfx -out wilcard.domain.nl.pem -nodes

Now change the pound cert:

nano /etc/pound.cfg
ListenHTTPS
Address 192.168.0.x
Port    443
Cert    "/etc/ssl/wilcard.domain.nl.pem"
End

Restart the service

service pound restart

Source: Enabling SSL in Zenoss 4.2 – Open Source Network Monitoring and Systems Management

Author: Thomas Faddegon

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