High-Availability

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Distributed Replicated Storage Across Four Storage Nodes With GlusterFS 3.2.x On Ubuntu 11.10

Distributed Replicated Storage Across Four Storage Nodes With GlusterFS 3.2.x On Ubuntu 11.10

This tutorial shows how to combine four single storage servers (running Ubuntu 11.10) to a distributed replicated storage with GlusterFS. Nodes 1 and 2 (replication1) as well as 3 and 4 (replication2) will mirror each other, and replication1 and replication2 will be combined to one larger storage server (distribution). Basically, this is RAID10 over network. If you lose one server from replication1 and one from replication2, the distributed volume continues to work.

High-Availability Storage With GlusterFS 3.2.x On Ubuntu 11.10 - Automatic File Replication Across Two Storage Servers

High-Availability Storage With GlusterFS 3.2.x On Ubuntu 11.10 - Automatic File Replication (Mirror) Across Two Storage Servers

This tutorial shows how to set up a high-availability storage with two storage servers (Ubuntu 11.10) that use GlusterFS. Each storage server will be a mirror of the other storage server, and files will be replicated automatically across both storage servers. The client system (Ubuntu 11.10 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.

RedHat Cluster Suite And Conga - Linux Clustering

RedHat Cluster Suite And Conga - Linux Clustering

This how to describes an easy step by step installation of the RedHat Cluster Suite on three CentOS nodes and prepare them as nodes of a cluster. You will also install the Management suite which is web based and is known as Conga.

How To Set Up Multi-Master Replication Using Tungsten And MySQL-Proxy For MySQL High Availability On Ubuntu 10.04.3 LTS

How To Set Up Multi-Master Replication Using Tungsten And MySQL-Proxy For MySQL High Availability On Ubuntu 10.04.3 LTS

This tutorial is based on my experience setting up Tungsten Replicator and MySQL-Proxy for a client's production setup.

How To Use pfSense To Load Balance Your Web Servers

How To Use pfSense To Load Balance Your Web Servers

In this HowTo I will show you how to configure pfSense 2.0 as a load balancer for your web servers. This HowTo assumes that you already have a pfSense box and at least 2 Apache servers installed and running on your network, and that you have some pfSense knowledge.

Setting Up Network RAID1 With DRBD On Ubuntu 11.10

Setting Up Network RAID1 With DRBD On Ubuntu 11.10

This tutorial shows how to set up network RAID1 with the help of DRBD on two Ubuntu 11.10 systems. DRBD stands for Distributed Replicated Block Device and allows you to mirror block devices over a network. This is useful for high-availability setups (like a HA NFS server) because if one node fails, all data is still available from the other node.

How To Install Repcached (Memcached Replication) For High-Availability Over 2 Nodes On Ubuntu 11.04

How To Install Repcached (Memcached Replication) For High-Availability Over 2 Nodes On Ubuntu 11.04

This is a short tutorial based on MarcusSpiegel's howto found here. This how to will cover the missing parts for installing Repcached on Ubuntu server 11.04. This is a copy/paste friendly tutorial so using putty will make this a lot easier. This how to will show you how to install and build memcached with replication, create a startup script and configure PHP to use memcache for sessions rather than storing them as files. This tutorial assumes you have set up 2 servers to replicate the information over.

Setting Up Network RAID1 With DRBD On Debian Squeeze

Setting Up Network RAID1 With DRBD On Debian Squeeze

This tutorial shows how to set up network RAID1 with the help of DRBD on two Debian Squeeze systems. DRBD stands for Distributed Replicated Block Device and allows you to mirror block devices over a network. This is useful for high-availability setups (like a HA NFS server) because if one node fails, all data is still available from the other node.

Setting Up Unison File Synchronization Between Two Servers On Debian Squeeze

Setting Up Unison File Synchronization Between Two Servers On Debian Squeeze

This tutorial shows how to set up file synchronization between two Debian Squeeze servers with Unison. Unison is a file-synchronization tool similar to rsync, but the big difference is that it tracks/synchronizes changes in both directions, i.e., files changed on server1 will be replicated to server2 and vice versa.

How To Set Up A Postgresql 9.0 Hot Standby Streaming Replication Server With Repmgr On OpenSUSE 11.4

How To Set Up A Postgresql 9.0 Hot Standby Streaming Replication Server With Repmgr On OpenSUSE 11.4

This is a tutorial how to set up a postgresql replicated hot standby server with streaming replication, and we also set up the repmgr to monitor and manage the replication cluster. Unlike most tutorials that copy the database file from master to slave (or standby) in the middle of running pg_start_backup() and pg_end_backup(), repmgr is used to simplify the whole procedure. (But I still think that procedure helps you a lot to understand how postgresql warm standby, pitr, and hot standby replication work.)

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