The gabport utility displays GAB port information or changes the heartbeat timeout value of a user client process on a GAB port. In normal operation, a GAB client process should heartbeat to GAB at a certain interval. GAB uses this mechanism to monitor the aliveness of...
Blog for Unix Admin / Solaris Admin / Solaris Installation / Solaris Troubleshooting
by Ramdev · Published April 18, 2022
During the jumpstart installation of a client below error is most command error that we encounter: Error: “Timeout waiting for ARP/RARP packet” This error cause might be network connectivity and most of the times it is the wrong network interface that is configured to boot from...
Redhat Cluster Services / Redhat Enterprise Linux 6 / RHCS Configurations / RHCS Fundamentals
by Ramdev · Published April 17, 2022
What is the Purpose of LVM in Clustered Environment and What are the Limitations? The Red Hat GFS2 file system is a native file system that interfaces directly with the Linux kernel file system interface (VFS layer). Red Hat supports the use of GFS2 file...
The installation of Opene-dss has been published in previous post. Kindly refer: http://mentorsup.com/blog/2016/02/installation-of-open-e-dss-on-vmware-workstation-for-shared-storage-in-unix-supported-for-scsi-3-persistent-reservation/ Creation of iSCSI Volume: I have assigned 1*5GB lun from VMware on Opene-dss VM. Login to opene-dss via GUI. Go to configuration -> Volume Manager -> Volume Group Now tick the disk (one...
Veritas Administration for unixadmin / VxVM Learning / VxVM Troubleshooting
by Ramdev · Published April 15, 2022
There are times that we see the disk status as “online failing” in vxdisk list output, even though the underlying hardware issue is not with the disk but with either controller or some other related hardware. Once we fix the non disk related hardware issue we...
Beginners Lessons / Linux Admin / Linux Beginners Guides / Linux Networking / Unix Beginners
by Ramdev · Published April 14, 2022
In this post I am just talking about top 10 networking services that are commonly used in enterprise linux networks. Below are the top 10 Services, and it is worthwhile to know for the beginners to understand the purpose of each service, procedure to manage...
Blog for Unix Admin / Solaris Admin / Veritas Administration for unixadmin / VxVM Learning / VxVM Troubleshooting
by Ramdev · Published April 13, 2022
Error while adding replaced disk to the root mirror Solaris:/etc/vx/bin> vxdg -g rootdg -k adddisk rootdisk=c1t4d0s2 VxVM vxdg ERROR V-5-1-10127 associating disk-media rootdisk with c1t4d0s2: Disk public region is too small Resolution: Solaris :/etc/vx/bin> vxdisk list DEVICE TYPE DISK GROUP STATUS c1t4d0s2 auto:sliced – – ...
zlogin -l <user> <zonename> or zlogin -C <zonename> Symptoms: can’t log into zone login fails as user
LDOM troubleshooting: Unable to start ldmd (Ldom Daemon). This week I was doing some testing on Ldoms to provide some important information about LDOM’s to our GurkulIndia followers. During initial phases I have met some nice troubleshooting which I would like to share with you all....
We know time is so important in your busy weekdays and Family Weekends, and that’s the reason we made a course that makes you an expert in Red Hat Enterprise Linux 7 , with just 15 minutes each day. Doesn’t matter whether you are commuting to...
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