we require peer to have ID ‘x.x.x.x’, but peer declares ‘x.x.x.x’

October 28, 2014

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PROBLEM At my side we have installed and configured VYATTA firewall and at the other side there was a hardware based firewall (May be CISCO or JUNIPER). We have created many site to site VPNs with different companies and they all are running fine. This time we were facing the subjected matter. At the other […]

Posted in: Linux

**ERROR** RRD: Disabled – unable to create base directory (err 13, /var/lib/ntop/rrd

September 12, 2014

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ERROR while installing ntop Error **ERROR** RRD: Disabled – unable to create base directory (err 13, /var/lib/ntop/rrd Solution #sudo chown -R nobody:nogroup /var/lib/ntop (Optional)  : You may need to create a directory   ( #/var/lib/ntop# mkdir rrd ) in the response of below ERROR while running ntop **ERROR** RRD: Disabled – unable to create base directory […]

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Redhat (RHEL) 6x Interfaces name keep changing

March 7, 2014

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Recently I faced that the Network Interface names keep changing after reboot. on a computer having two network cards made by Intel and Realtek, the network card manufactured by Intel may become eth0 and the Realtek card becomes eth1. In some cases, after a reboot the cards get renumbered. # cat /etc/udev/rules.d/70-persistent-net.rules # This file […]

Posted in: Linux

How to configure IIS Web Site and Application Pool in Microsoft Failover Cluster

February 12, 2014

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Environment OS = Windows 2008R2 Cluster Nodes = Two Agenda I have an application which have few Virtual Web Sites hosted on IIS, few Application Pools and few windows services. We need to monitor Virtual Web Sites and Application Pool, if they stop responding the Cluster Service Group can failover to other Cluster Node. The […]

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Howto add disk resource in windows failover cluster from command line

February 4, 2014

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Environment Cluster nodes = two Cluster nodes OS = Windows2008R2 Agenda Today we will add a disk under Microsoft Failover Cluster from command line. Recently I faced an issue in which I was not able to see a shared SAN drive under Storage => Microsoft Failover Cluster. I fixed it and decided to share the […]

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Backup Exec 2012 agent configuration on client(RHEL)

January 15, 2014

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Environment – Local system credentials should be Oracle User (which is used to install oracle) ans should not be root. See the Oracle user as mention in the below link http://www.oracle-base.com/articles/11g/oracle-db-11gr2-installation-on-oracle-linux-5.php – The Oracle Instance name is orcl. – Backup Exec Server is 192.168.38.168   Backup Exec 2012 agent configuration on client Oracle user is […]

Posted in: Backup Exec Server

Howto authenticate redhat from Active Directory

January 3, 2014

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My tested environment Domain = Windows2008R2 Client OS = RHEL 6.2 Steps samba and winbind must be installed. Host file of windows domain (%windows%\system32\drivers\etc = host file path) and client RHEL OS (etc/hosts = host file path) must be configured   OR   DNS should be working. RHEL client time must be sync with windows domain […]

Posted in: Linux