Archive for June, 2010

How to install opennms in Debian


Hi again

For installing the opennms in your Debian Server you should add the opennms repository in your aptitude configuration file.

vim /etc/apt/source.list

add the following lines in to you file.

deb stable main
deb-src stable main

then update your aptitude.

aptitude update

and after that you should install the opennms

aptitude install opennms postgresql-client-8.3

after that you shoud set password for you postgresql .therefore first login as root. and then

# su postgres
# psql -d template1

now press exit to come back in to you root profiles.

after that you should configure your database information for the opennms database connection configuration.

vim /usr/share/opennms/etc/opennms-datasources.xml

now change the user and password in following lines.

<?xml version=”1.0″ encoding=”UTF-8″?>
<datasource-configuration xmlns:this=””
xsi:schemaLocation=” “>
<jdbc-data-source name=”opennms”
password=”opennms” />

<jdbc-data-source name=”opennms-admin”
password=”yourpassword” />


now you can start the installation of the open/usr/share/opennms/bin/install -dis

/usr/share/opennms/bin/install -dis

Thats it. your opennms server now is intalled.

Note that during the installation of opennms will asks you to install the java. press yes to continue;

if you have any question do not hesitate to contact me. and I will appreciate you to send me by the mail :)


references :

How to create a self-signed SSL Certificate

Hi again

For installing the apache with https support you should have a Certificate Authority Server to sign you. by using this you can publish your web content encrypted by RSA algorithm through the port 443. but many times the company prefer to publish its own certificate. (for instant the local companies with the privates accesses) therefore you should able to make a way to sign you SSL certificate by your own server.

Since my favorite Linux Distribution is Debian I will give you the the commands in that. However most of the distributions works in similar way.

First install the Openssl package in your server when you installing the apache with aptitude command.

Then Generate the Private key of your system

openssl genrsa -des3 -out server.key 1024

now you should generate your Certificate Signing Request (CSR) file by following command

openssl req -new -key server.key -out server.csr

by returning above command the console will asks you about the country , region , company name etc. but you can simply predefined these configurations in /etc/ssl/openssl.cnf file.

not its time to remove Passphrase from Key

cp server.key
openssl rsa -in -out server.key

the next step is Generating a Self-Signed Certificate

openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt

now simply copy your files into the /etc/apache2/ssl directory. if not exist simply create ssl Directory in your apache root.

cp server.crt /etc/apache2/ssl/ssl.crt
cp server.key /etc/apache2/ssl/ssl.key

The final task you should do to obtain the apache server with https support is that tel the apache where is your Certificates. perhaps you should create a file in your apache site-available directory and change your port into 443. after that you should address the Certificate file in your virtual host configurations.

SSLEngine on
SSLCertificateFile /etc/apache2/ssl/server.crt
SSLCertificateKeyFile /etc/apache2/ssl/server.key

thats it . just restart your server :) if you need any further assistance to run the apache with ssl support do not hesitate to contact me.

reference :

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