Author: Ramdev

1

Creating Centralized Crash Analysis Server for Red hat Enterprise Linux Environment

Case Study : In our RedHat Enterprise Linux environment, transferring large vmcore files to external sites for support purpose can be extremely time consuming and/or not realistic.  And  at the same time  it is not feasible  to install the kernel-debuginfo and crash utility packages locally on...

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Solaris 11 – How to Manage System Crash Dumps

How to Display the Current Crash Dump Configuration Become the root role. Display the current crash dump configuration. # dumpadm Dump content: kernel pages Dump device: /dev/dsk/c0t3d0s1 (swap) Savecore directory: /var/crash Savecore enabled: yes Saved compressed: on The preceding example output means: The dump content is...

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Configuring Kdump to troubleshoot kernel crashes, hangs, or reboots in RHEL5/RHEL6/RHEL7

  How Kdump works? Using the kdump service and the kexec command, you can ensure faster boot up and creation of reliable kernel (vmcores) for diagnostic purposes. First of all let us understand these two basic components: • kexec:  The kexec command is a fast boot mechanism...

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Solaris 11 – How to manage Solaris Boot Archives

The bootadm command handles the details of boot archive update and verification. During the process of a normal system shutdown, the shutdown process compares the boot archive’s contents with the root file system. If there have been updates to the system such as drivers or configuration...

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You all made me win , Thank you

You all know that we have recently announced  Solaris Associate Membership program from unixadminschool.com.  Initially when i took the decision of launching a Membership program from unixadminschool.com, i was very much tensed and worried . In addition to that the deadlines that i have set for myself...

Solaris 11 Administration Information Center

Read – How to Administrate IPQoS Read Command Cheat Sheet : Managing Services Read Command Cheat Sheet – Image Packaging System Read Command Cheat Sheet – Installation and Deployment Read Command Cheat Sheet – Basic Adminsitration Read – Monitoring System Activities using sar in Solaris Read...

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Linux Admin Reference – SUDO Configuration in RedHat Enterprise Linux

Sudo is different from the su command and is more flexible and more secure. The sudo command allows users to do tasks on a Red Hat Enterprise Linux system as another user. One significant advantage is that it can log usage. By default the program saves...

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VCS : Configure GAB manually

    VCS uses the Group Membership Services/Atomic Broadcast (GAB) protocol for cluster membership and reliable cluster communications. GAB has two major functions. It handles the following tasks: Cluster membership Cluster communications       To configure GAB Set up an /etc/gabtab configuration file on each...

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