How do I make NFS highly available?
To create highly available NFS export resources, use the exportfs resource type. Pacemaker will export the NFS virtual file system root and the two other exports.
What is Linux NFS server?
What is Linux NFS Server? Network File Sharing (NFS) is a protocol that allows you to share directories and files with other Linux clients over a network. Shared directories are typically created on a file server, running the NFS server component.
What is required in high availability cluster in Linux?
A high availability Linux cluster is a group of Linux computers or nodes, storage devices that work together and are managed as a single system. In a traditional clustering configuration, two nodes are connected to shared storage (typically a SAN).
How do you configure and maintain high availability clustering in Linux?
Steps involved to configure two node High Availability Cluster:
- Install and Configure the Apache webserver (httpd Packages) on both nodes.
- Enable the repo for High Availability Packages from ISO Image if needed or use public repos.
- Install High Availability Cluster on both nodes.
- Configure High Availability Cluster.
What is DRBD in Linux?
DRBD (Distributed Replicated Block Device) is a Linux-based software component that facilitates the replacement of shared storage systems by networked mirroring. DRBD makes it possible to maintain consistency of data among multiple systems in a network. DRBD also ensures high availability (HA) for Linux applications.
What is NFS Ganesha?
NFS Ganesha is an NFS server (refer to Sharing File Systems with NFS ) that runs in a user address space instead of as part of the operating system kernel. With NFS Ganesha, you can plug in your own storage mechanism—such as Ceph—and access it from any NFS client.
What is difference between Samba and NFS?
NFS is a protocol that allows a user to access files over a network; Samba is essentially a re-imaging of the Common Internet File System.
Is NFS faster than SMB?
Conclusion. As you can see NFS offers a better performance and is unbeatable if the files are medium sized or small. If the files are large enough the timings of both methods get closer to each other. Linux and Mac OS owners should use NFS instead of SMB.
How do I set up a high-availability cluster?
To configure a high-availability cluster, you store shared files on network storage. Then, you configure multiple servers, set each server to access the same files and database, and configure a load balancer to distribute the traffic between the servers.
What is Red Hat high-availability?
Red Hat® Enterprise Linux® High Availability Add-On allows a service to fail over from 1 node to another with no apparent interruption to cluster clients, evicting faulty nodes during transfer to prevent data corruption.
How do you build a high-availability cluster?
To successfully configure a high availability (HA) cluster, all hosts in the cluster must have access to the same shared storage. In any case of failure, a virtual machine (VM) on one host can failover to another host, without any downtime.
Is DRBD open source?
DRBD®– software is open-source designed to mirror data among any number of Windows servers in shared-nothing high availability clusters.
What happens if the node on which the NFS server is running?
If the node on which the NFS server is running becomes inoperative, the NFS server starts up again on the second node of the cluster with minimal service interruption. This use case requires that your system include the following components:
Does NFS use a dedicated IP address?
The NFS server uses a dedicated virtual hostname and virtual IP addresses for every SAP system that uses this NFS server. On Azure, a load balancer is required to use a virtual IP address.
How do I add a load balancer to a NFS cluster?
Add one data disk for each SAP system to both virtual machines. Create a Load Balancer (internal). We recommend standard load balancer . Select the virtual machines of the NFS cluster and their IP addresses.
How do I prevent NFS from starting with the init routine?
Our plan is to have heartbeat control the service instead of init, thus we will prevent NFS from starting with the normal init routines. We will then place the NFS file locks on the DRBD device so both servers will have the information available when they are the primary DRBD device.