2daygeek
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2dayGeek(2dG) is an online community that publishes practical and useful articles for aspirants like you to become experts. 2dayGeek articles cover Linux tips & tricks, Linux how-to tutorials, Linux practical guides, Linux practical examples, and much more.
2daygeek
3M ago
GPFS stands for General Parallel File System, which is a cluster file system developed by IBM, know as the IBM Storage Scale. It allows simultaneous read and write access to a file system or set of file systems from multiple nodes at the same time.
In the last article, we had showed you how to install and configure GPFS file system in RHEL system, today we will show you how to create GPFS cluster file system on RHEL, including NSD stanzafile creation, NSD Disk creation, GPFS file system creation and mounting it
If you are new to GPFS, I recommend reading the GPFS series article listed below ..read more
2daygeek
4M ago
GPFS stands for General Parallel File System is a cluster file system developed by IBM. It’s named IBM Storage Scale and previously IBM Spectrum Scale. It’s a cluster file system that provides concurrent access to a single file system or set of file systems from multiple nodes. The nodes can be SAN attached, network attached, a mixture of SAN attached and network attached. This enables high performance access to this common set of data to support a scale-out solution or to provide a high availability platform.
It has many features including data replication, policy based storage management, an ..read more
2daygeek
7M ago
In Linux, you can create advanced network setups such as Network Bonding or NIC teaming, VLAN tagging, and bridging based on your needs. These advanced features allow for increased network connectivity efficiency and reliability.
You can create VLAN interfaces on top of another interface, such as Ethernet, bond, team, or bridge devices.
In this article, we will learn how to configure VLAN tagging over Network Bonding in RHEL system, which allows traffics from different networks to share common physical links.
Prerequisites for tagging VLAN over Bonding:
The Network team need to enable LACP (8 ..read more
2daygeek
7M ago
Bonding is a Linux kernel feature that allows multiple network interfaces (such as ens192, ens224) to be aggregated into a single virtual network interface called channel bonding (bond0). It increases the throughput and provide redundancy.
Network bonding supports 7 modes and you can configure it based on your requirements. Link Aggregation Control Protocol (LACP – Mode 4 (802.3ad)) mode is widely used because it supports link aggregation and redundancy.
In this article, we will learn how to configure NIC or network bonding in RHEL system.
Prerequisites for LACP Bonding:
The Network team need ..read more
2daygeek
8M ago
In computing, there are two types of IP addresses, IPv4 and IPv6. IPv6 offers a much larger addressing scheme than IPv4. However, IPv4 is more widely used by many organizations than IPv6 due to various reasons.
There are situations where you need to disable IPv6 on a RHEL system, such as the application does not support IPv6, the application’s inability or hardware does not support it, etc,.
This can be done in few ways. This tutorial explains one of the easiest methods to disable IPv6 on RHEL system.
Disabling IPv6 using grubby
The grubby utility can be used to make persistent changes to the ..read more
2daygeek
8M ago
Veritas Cluster Server upgrade can be done smoothly by using the Install Bundles feature. This installer allows you to perform the upgrade directly to a base, maintenance, patch level or a combination of multiple patches and packages together in one go because the installer has the ability to merge all these packages. So, you don’t have to perform two or more install actions to install or upgrade systems to maintenance levels or patch levels.
If you are on an unsupported operating system version, ensure that you first upgrade to a supported verison of the operating system then perform VCS upgr ..read more
2daygeek
9M ago
We’ve written several articles in the past to find LUN ID mapped to Block device/disk, but when you’re managing a VCS cluster there are some situations where you might want to map a LUN ID against a VxVM (Veritas Volume Manager ) disk for VxFS file system expansion.
This short article describes how to find the LUN number associated with a VxVM disk in Linux
Recommended Read:
How to Find SAN disk LUN id in Linux
How to map ASM disks to Physical disks in Linux
How to map SAN LUN, Disk and FileSystem in Linux
How to map LUN, Disk, LVM and File System in Linux
Shell Script to find LUN Number Map ..read more
2daygeek
9M ago
Extending the VxFX file system is a routine task for a Linux/Unix administrator and this can be done online with a few steps described in the below article:
In this scenario, the Disk Group doesn’t have sufficient free space, so we will be adding a new disk in the existing Disk Group (DG) and then resizing it.
Related Articles:
How to Create VxVM Volume and Filesystem in Linux
How to Create Shared VxFS FileSystem on Linux
Step-1: Identifying Filesystem
Check the Filesystem to be increased/extended using the df command and note down the Disk Group (DG) and Volume name from the below output, w ..read more
2daygeek
9M ago
There are situations where you want to map storage LUN (Logical Unit Number), Block Device, LVM (LV & VG names) and File System (FS) information for FS expansion or Disaster Recovery (DR) operation.
This is a routine activity for most Linux administrators, and we usually use some script that displays the block device mapping against SAN LUN, and then we will manually add the LVM and File System information to complete the operation.
Going forward, you don’t need to manually intervene on this activity because these information can be mapped by shell script as shown below.
Refer the followin ..read more
2daygeek
9M ago
In the previous article, we have demonstrated how to install Veritas Cluster Server 8.0 in RHEL 8.8. This is continuation of the previous article.
Now, we’ll explain how to configure the Veritas Cluster Server (VCS) (aka Veritas InfoScale Enterprise) with a two-node cluster on RHEL 8.8.
How to Create VxVM Volume and Filesystem in Linux
How to Create Shared VxFS FileSystem on Linux
How to Extend/Increase VxFS Filesystem in Linux
Veritas InfoScale Configuration
As the below screen is self-explanatory. Input 'y' for both the questions and press 'Enter' to move to the next screen.
Would you lik ..read more