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Installing OpneNMS on CentOS - using RPM.


As from my previous post. This again is for the IT Team. Was helping them setup and network Monitoring tool.

Here are the step to follow to install OpenNMS.

Step 1: configure the OpenNMS Repository RPM
]# yum install yum-fastestmirror
]# rpm -Uvh http://yum.opennms.org/repofiles/opennms-repo-stable-rhel5.noarch.rpm

Step 2: Install the Prerequisite Package: Java
To install java you would download “jdk-7u3-linux-x64.rpm “from http://www.oracle.com/technetwork/java/javase/downloads/jdk-7u3-download-1501626.html  and place it in your current working directory then run bellow command
]$ sudo rpm -ivh jdk-7u3-linux-x64.rpm
Step 2: Install the Prerequisite Package: PostgreSQL
To install PostgreSQL follow bellow commands
]$ sudo yum -y install postgresql-server
(OR use the installer from http://www.enterprisedb.com/products-services-training/pgdownload)
]# /etc/init.d/postgresql start
]# /sbin/chkconfig postgresql on
Configure PostgreSQL
Locate the Postgres "data" directory. Often this is /var/lib/pgsql/data and Open /var/lib/pgsql/data/ postgresql.conf in text editor.
]$ vi /var/lib/pgsql/data/postgresql.conf
 Now uncomment/edit bellow lines as shown         
          listen_addresses = 'localhost'
      max_connections = 256
      shared_buffers = 1024
Similarly edit pg_hba.conf file .In the bottom of the file, replace “ident” with “trust” for all.
]# vi /var/lib/pgsql/data/ pg_hba.conf
]# /etc/init.d/postgresql restart
Step 3: Install the Prerequisite Package: jicmp
]# yum install jicmp

Step 4: Install the OpenNMS Repository RPM

To install the latest stable release (opennms-repo-stable-rhel6.noarch) on CentOS , you would run bellow commands
]# yum install opennms
Configure java for OpenNMS (note: after –s give the path where java installed).
]# /opt/opennms/bin/runjava –s /usr/bin/java
]# /opt/opennms/bin/install -dis
Add automatic startup of opennms in your current runlevel
]# /sbin/chkconfig  opennms on
]# /sbin/service opennms start
 To Add a Firewall Exception for OpenNMS
]# vi /etc/sysconfig/iptables
Now add the bellow line for giving exception for port 8980
-A INPUT -m state --state NEW -m tcp -p tcp --dport 8980 -j ACCEPT
]# /sbin/service iptables restart
Now we can connect to the Web UI of opennms with bellow link
 http://localhost:8980/opennms/

And log in as
User: admin
Password: admin
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