IamLinux.comTweet3 Simple steps to implement OpenStack cloud on single node   Step 0: Prerequisites   Software: Red Hat Enterprise Linux (RHEL) 6.5 is the minimum recommended version, or the equivalent version of one of the RHEL-based Linux distributions such as CentOS, Scientific Linux, etc., or Fedora 20 or later. See also RDO repository info for ..

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IamLinux.comTweetReference: http://docs.openstack.org   The OpenStack project is an open source cloud computing platform for all types of clouds, which aims to be simple to implement, massively scalable, and feature rich. Developers and cloud computing technologists from around the world create the OpenStack project. OpenStack provides an Infrastructure as a Service (IaaS) solution through a set of ..

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IamLinux.comTweetInstall your own cloud storage server with owncloud opensource application on CentOS 6 Reference: owncloud.org With ownCloud you can sync & share your files, calendar, contacts and more. Access your data from all your devices, on an open platform you can extend and modify. Step by step instructions Install EPEL Repository for extra packages. For ..

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IamLinux.comTweetHow to detect stale mirror copies and Steps for correction: The Volume Group Status Area (VGSA) tracks the status of 1016 physical partitions per disk per volume group. During a read or write, if the LVM device driver detects that there was a failure in fulfilling a request, the VGSA will note the physical partition(s) that ..

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IamLinux.comTweetHow to detect stale mirror copies and Steps for correction: The Volume Group Status Area (VGSA) tracks the status of 1016 physical partitions per disk per volume group. During a read or write, if the LVM device driver detects that there was a failure in fulfilling a request, the VGSA will note the physical partition(s) that ..

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IamLinux.comTweetHow to fix the ODM Synchronization Issues:   Re-synchronizing the ODM Problems with the LVM tend to occur when a physical disk problem causes the ODM data to become out of sync with the VGDA, VGSA, and LVCB information stored on disk. ODM corruption can also occur if an LVM operation terminates abnormally (kill -9) ..

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IamLinux.comTweetJust wanted to share a very useful information and implementation procedure for Transforming Linux servers in to High Available Load Balancer with the help of LVS ( inbuit utility in RHEL ) without any additional cost. HA LVS can be used for any service for example apache, ssh, ftp, sftp, mysql and many others. Here ..

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IamLinux.comTweet1  Set number of days for password Expiration. Users must change their password within the days. This setting impact only when creating a user, not impact to exisiting users. If set to exisiting users, run the command “chage -M (days) (user)”. [root@manojbarot ~]# grep PASS_MAX_DAYS /etc/login.defs #    PASS_MAX_DAYS    Maximum number of days a password may ..

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IamLinux.comTweetFound nice document today on centos wiki http://wiki.centos.org/TipsAndTricks/YumAndRPM 1. Getting rpm to display architecture This one is a pretty simple tip, and very useful especially for people using x86_64 systems. Just one line in ~/.rpmmacros will save all sorts of trouble later. echo “%_query_all_fmt %%{name}-%%{version}-%%{release}.%%{arch}” >> ~/.rpmmacros     2. Query packages not from CentOS ..

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IamLinux.comTweet7 Important topic Linux System Administrator should know before appearing in Level 3 interview   Installation options with kickstart Most of the interviewer concentrate on Automated Installation and different type of options used during kickstart installation, it is better to prepare and understand in deep level of different type of installation options. Linux Boot Process ..

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