IBM Power Linux Features and Supported commands

RHEL Power Linux Features and Commands

Features for Open Power Linux (RHEL Power Linux) : Nowadays IBM Power system hardware’s supporting Red Hat Enterprise Linux operating systems using IBM POWER8 processors . We can easily install and configure Rhel 7.1 Little Endian and later edition on IBM Power8 Hardware’s. currently supported only KVM guest Feature’s under Red Hat Enteprise Virtualization for Power systems. Supported architecture code is ppc64le and kernel type is 64 bit kernel. Packages available as per examples : gcc-4.8.3-9.ael7b.ppc64le.rpm.   Features for Power8 Processor & Systems : Power8 has the best Memory &…

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PowerHA SystemMirror 6.1 to 7.1.3 Snapshot Migration

PowerHA SystemMirror 6.1 to 7.1.3 Snapshot Migration

Snapshot Migration From PowerHA v6.1 to v7.1.3 * Whenever we are going to perform PowerHA SystemMirror snapshot migration from 6.1 to 7.1.3. * We have to full fill the PowerHA SystemMirror migration prerequisites. * This document will be going to explain PowerHA SystemMirror snapshot migration. * First we are going discuss about PowerHA SystemMirror snapshot migration prerequisites. Snapshot Migration: * This is not real cluster concept migration. Why because customer would remove the previous version of PowerHA SystemMirror and install the new version of PowerHA SystemMirror 7.1.3.0. * Then configure…

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COE 344 COMPUTER NETWORKS VIDEO TUTORIAL

COE 344 COMPUTER NETWORKS VIDEO TUTORIALS

COE 344 COMPUTER NETWORKS (3-3-4) VIDEO TUTORIAL This course will be taught using TCP/IP top-down approach. Topics covered include introduction to computer networks. Application layer design issues and protocols are discussed. Then, Transport layer design issues, protocols as well as congestion control mechanisms are presented. Socket programming is explained. An in-depth analysis is presented of the Network layer design issues, and inter-networking. MAC layer design issues and protocols are presented. Finally, multimedia network applications are explored.

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Rshexec: cannot connect to node NODE1

rshexec cannot connect to node NODE1

rshexec: cannot connect to node NODE1 * Normally this kind of error we are facing at the time of HACMP Cluster synchronize. * If suppose we are not resolving this issue, cluster resource groups will be going to error mode. * We will not able to solve the error resource groups. Error Message: NODE1:# smitty hacmp -> Extended Configuration -> Extended Verification and Synchronization rshexec: cannot connect to node NODE1 Could not run clfilecollection -u on node NODE1. rshexec: cannot connect to node NODE2 Could not run clfilecollection -u on…

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Clmigcheck utility rshexec cannot connect to node NODE1

ERROR: Internode communication failed, check the clcomd.log file for more information.

ERROR: Internode communication failed, check the clcomd.log file for more information. * Normally this kind of error we are facing at the time PowerHA systemMirror migration Prerequisites. * PowerHA systemMirror clmigcheck utility deducting this kind of errors. * If suppose we are not resolving this issue, we will not able to perform PowerHA SystemMirror 6.1 to 7.1 Rolling or Snapshot migration. * We can identify clmigcheck detailed output on /tmp/clmigcheck/clmigcheck.log Error Message: NODE2:# clmigcheck Saving the existing log, “/tmp/clmigcheck/clmigcheck.log”, to “/tmp/clmigcheck/clmigcheck.log.20160324_1942”. # ## One or more possible problems have been…

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ERROR: exactly one “hosts” entry is required in /etc/netsvc.conf

ERROR: exactly one “hosts” entry is required in /etc/netsvc.conf

ERROR: exactly one “hosts” entry is required in /etc/netsvc.conf * Normally this kind of error we are facing at the time PowerHA systemMirror migration Prerequisites. * PowerHA systemMirror clmigcheck utility deducting this kind of errors. * If suppose we are not resolving this issue, we will not able to perform PowerHA SystemMirror 6.1 to 7.1 Rolling or Snapshot migration. Error Message: NODE1:# clmigcheck ## One or more possible problems have been detected: ERROR: exactly one “hosts” entry is required in /etc/netsvc.conf on node “NODE1”. A value such as the following…

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ERROR: Problems encountered creating the CAA cluster. Use the syslog facility to see output from the mkcluster command.

ERROR: Problems encountered creating the CAA cluster. Use the syslog facility to see output from the mkcluster command.

ERROR: Problems encountered creating the CAA cluster. Use the syslog facility to see output from the mkcluster command. * Normally this kind of error we are facing at the time PowerHA systemMirror migration Prerequisties. * PowerHA systemMirror clmigcheck utility deducting this kind of errors. * If suppose we are not resolving this issue, we will not able to perform PowerHA SystemMirror 6.1 to 7.1 migration. Error Message: NODE2:# clmigcheck Saving the existing log, “/tmp/clmigcheck/clmigcheck.log”, to “/tmp/clmigcheck/clmigcheck.log.20160329_1758”. Running a few tests to help validate this environment. Please be patient. It appears…

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PowerHA SystemMirror communication path and the CuAt inet0 persistent hostname does not match.

PowerHA SystemMirror communication path and the CuAt inet0 persistent hostname does not match.

PowerHA SystemMirror communication path and the CuAt inet0 persistent hostname does not match. * Normally this kind of error we are facing at the time PowerHA systemMirror migration Prerequisties. * PowerHA systemMirror clmigcheck utility deducting this kind of errors. * If suppose we are not resolving this issue, we will not able to perform PowerHA SystemMirror 6.1 to 7.1 migration. Error Message: ERROR: an inconsistency has been discovered between the PowerHA SystemMirror communication path and the CuAt inet0 persistent hostname on node “NODE2” PowerHA SystemMirror Communication Path: NODE2boot CuAt inet0 Persistent…

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PowerHA SystemMirror 6.1 to 7.1.3 Rolling Migration

PowerHA SystemMirror 6.1 to 7.1.3 Rolling Migration

PowerHA SystemMirror 6.1 to 7.1.3 Rolling Migration Whenever we are going to perform PowerHA SystemMirror rolling or snapshot migration from 6.1 to 7.1.3 we have to full fill the prerequisites. This document will be going to explain how make readiness for Power HA SystemMirror migration from 6.1 to 7.1.3 First we will discuss abut PowerHA SystemMirror migration types and prerequisites. Type of PowerHA Migrations: 1. Offline Migration 2. Rolling Migration 3. Snapshot Migration Offline Migration: * In this migration bring down entire PowerHA cluster, Install/upgrade Aix operating system OS level and…

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PowerHA SystemMirror 6.1 to 7.1.3 migration Prerequisites

PowerHA SystemMirror 6.1 to 7.1.3 Migration Prerequisites

PowerHA SystemMirror 6.1 to 7.1.3 migration Prerequisites Abstract: ❖    Whenever we are going to perform PowerHA SystemMirror rolling or snapshot migration from 6.1 to 7.1.3 we have to fulfill the prerequisites. Content: ❖    This document is going to explain how make readiness for PowerHA SystemMirror migration from 6.1 to 7.1.3 I. Type of Power HA Migrations: 1. Offline Migration 2. Rolling Migration 3. Snapshot Migration  1. Offline Migration: In this migration bring down the entire PowerHA cluster nodes, Install/upgrade Aix operating system OS level and PowerHA 7.1.3 latest version. Restart the cluster service…

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