Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Solaris 11 – How to reduce the Solaris Reboot Time using Fast Reboot

The Fast Reboot feature of Oracle Solaris is supported on both SPARC and x86 platforms. The Fast Reboot feature behaves differently on SPARC based systems than it does on an x86 based systems. On x86 based systems, Fast Reboot is the default. On SPARC based systems,...

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Solaris 11 – How to manage Solaris Run Level Scripts

  How to Use a Run Control Script to Stop or Start a Legacy Service Become an administrator Stop the system service. # /etc/init.d/filename stop Restart the system service. # /etc/init.d/filename start Verify that the service has been stopped or started. # pgrep -f service Example 1...

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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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Solaris 11 – How to Manage locally Connected Terminal Console

How to Modify Settings for the System Console This procedure shows how to change the console terminal type by using the svccfg command. Become the root role. $ su – Password: # Use the svccfg command to set the property for the service instance that you...

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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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