This tutorial will show you how to create a High Availability HAProxy load balancer setup on DigitalOcean, with the support of a Floating IP and the Corosync/Pacemaker cluster stack. The HAProxy load balancers will each be configured to split traffic
This tutorial will show you how to create a High Availability HAProxy load balancer setup on DigitalOcean, with the support of a Floating IP and the Corosync/Pacemaker cluster stack. The HAProxy load balancers will each be configured to split traffic
Pacemaker is an Open Source, High Availability resource manager suitable for both small and large clusters.
Hardware and application failures can result in prolonged downtime and impact your bottom line.
In the event of a failure, resource managers like Pacemaker automatically initiate recovery and make sure your application is available from one of the remaning machines in the cluster.
"Dell Community Repositories Your Dell PowerEdge systems can be managed using the yum utility that already manages packages for Red Hat Enterprise Linux 5.3 on your nodes. This provides easy access to any Dell provided Linux software, Dell PowerEdge firmware updates, some DKMS drivers, and other open source software. For more information, visit linux.dell.com/repo/community/ If your nodes do not have access to the internet, skip this section and perform manual firmware updates and software installation to your PowerEdge systems as needed. Visit support.dell.com for information. NOTE: The repositories are community supported, and not officially supported by Dell. Use the linux-poweredge mailing list on lists.us.dell.com for repository support. "
he following will install and configure DRBD, OpenAIS, Pacemaker and Xen on OpenSUSE 11.1 to provide highly-available virtual machines. This setup does not utilize Xen's live migration capabilities. Instead, VMs will be started on the secondary node as soon as failure of the primary is detected. Xen virtual disk images are replicated between nodes using DRBD and all services on the cluster will be managed by OpenAIS and Pacemaker. The following setup utilizes DRBD 8.3.2 and Pacemaker 1.0.4. It is important to note that DRBD 8.3.2 has come a long way since previous versions in terms of compatibility with Pacemaker. In particular, a new DRBD OCF resource agent script and new DRBD-level resource fencing features. This configuration will not work with older releases of DRBD.
Red Hat Cluster Suite is a collection of technologies working together to provide data integrity and the ability to maintain application availability in the event of a failure. Administrators can deploy enterprise cluster solutions using a combination of hardware redundancy along with the failover and load-balancing technologies in Red Hat Cluster Suite.
LinBit's system for mirroring filesystems across the Network, typically a dedicated LAN, written by Philipp Reisner and LarsEllenberg. This is the general replication technology which is most commonly used by members of by the Linux-HA community. By the w
DRBD is a block device which is designed to build high availability clusters. This is done by mirroring a whole block device via (a dedicated) network. You could see it as a network raid-1.
You MUST have a third server as a managment node but this can be shut down after the cluster starts. Also note that I do not recommend shutting down the managment server (see the extra notes at the bottom of this document for more information). You can no
In this first of five articles, learn what it means for software to be highly available and how to install and set up heartbeat software from the High-Availability Linux project on a two-node system. You'll also learn how to configure the Apache Web serve
The Linux Virtual Server is a highly scalable and highly available server built on a cluster of real servers, with the load balancer running on the Linux operating system. The architecture of the server cluster is fully transparent to end users, and the u
DRBD is a block device which is designed to build high availability clusters. This is done by mirroring a whole block device via (a dedicated) network. You could see it as a network raid-1
The Linux-HA project is a widely used and important component in many interesting High-Availability solutions. We estimate that we currently have around thirty thousand installations up in mission-critical uses in the real world since it became suitable f
Ultra Monkey is a project to create load balanced and highly available network services. For example a cluster of web servers that appear as a single web server to end-users. The service may be for end-users across the world connected via the internet, or