Linux Tutorials on the topic “high-availability”
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How To Use pfSense To Load Balance Your Web Servers
Author: neofire •
Tags: freebsd, high-availability, web server •
Comments: 8 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.
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Setting Up Network RAID1 With DRBD On Ubuntu 11.10
Author: Falko Timme •
Tags: ubuntu, high-availability, storage •
Comments: 2 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.
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How To Install Repcached (Memcached Replication) For High-Availability Over 2 Nodes On Ubuntu 11.04
Author: michael.cmech •
Tags: ubuntu, high-availability, lighttpd, web server •
Comments: 3 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.
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Setting Up Network RAID1 With DRBD On Debian Squeeze
Author: Falko Timme •
Tags: debian, high-availability, storage •
Comments: 4 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.
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Setting Up Unison File Synchronization Between Two Servers On Debian Squeeze
Author: Falko Timme •
Tags: debian, high-availability, storage •
Comments: 6 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.
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How To Set Up A Postgresql 9.0 Hot Standby Streaming Replication Server With Repmgr On OpenSUSE 11.4
Author: wintel2006 •
Tags: suse, high-availability •
Comments: 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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How To Set Up Software RAID1 On A Running LVM System (Incl. GRUB2 Configuration) (Debian Squeeze)
Author: Falko Timme •
Tags: debian, high-availability, storage •
Comments: 6 How To Set Up Software RAID1 On A Running LVM System (Incl. GRUB2 Configuration) (Debian Squeeze) This guide explains how to set up software RAID1 on an already running LVM system (Debian Squeeze). The GRUB2 bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails (no matter which one).
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How To Set Up Software RAID1 On A Running System (Incl. GRUB2 Configuration) (Debian Squeeze)
Author: Falko Timme •
Tags: debian, high-availability, storage •
Comments: 18 How To Set Up Software RAID1 On A Running System (Incl. GRUB2 Configuration) (Debian Squeeze) This guide explains how to set up software RAID1 on an already running Debian Squeeze system. The GRUB2 bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails (no matter which one).
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How To Set Up MySQL Database Replication With SSL Encryption On Debian Squeeze
Author: Falko Timme •
Tags: debian, high-availability, mysql •
Comments: 1 How To Set Up MySQL Database Replication With SSL Encryption On Debian Squeeze This tutorial describes how to set up database replication in MySQL using an SSL connection for encryption (to make it impossible for hackers to sniff out passwords and data transferred between the master and slave). MySQL replication allows you to have an exact copy of a database from a master server on another server (slave), and all updates to the database on the master server are immediately replicated to the database on the slave server so that both databases are in sync. This is not a backup policy because an accidentally issued DELETE command will also be carried out on the slave; but replication can help protect against hardware failures though.
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Openfiler 2.3 Active/Passive Cluster (heartbeat,DRBD) With Offsite Replication Node
Author: wayner • Tags: linux, high-availability, storage • Comments: 5Openfiler 2.3 Active/Passive Cluster (Heartbeat, DRBD) With Offsite Replication Node Openfiler is a Linux based NAS/SAN application which can deliver storage over nfs/smb/iscsi and ftp. It has a web interface over that you can control these services. The cluster we build will consist of two nodes replicating each other and taking over services and storage in case of emergency. Furthermore we have an Offsite Replication Server, which ideally stands in a physically different position and replicates the configurations/storage from which ever node is active. In case of emergency this Offsite Replication Server can be used to restore the cluster and to deliver the services.
