Projects

unbalanced

Problem: You have a small cluster of machines (2+), on which you wish to load-balance one or more services (such as HTTP or DNS). There is not enough budget/need for dedicated loadbalancers, yet you want something more robust than simple round-robin DNS for distributing the work. Solution: ... [More] Install unbalanced on each machine in the cluster. Configure the (same) cluster address and list of ports in /etc/unbalanced/unbalanced.conf. [Less]

VRRP -Virtual Router Redundancy Protocol

VRRPd is an implementation of Virtual Router Redundancy Protocol as specified in rfc2338. VRRPd is interoperable with other RFC-based VRRP implementations, including Cisco and Juniper, and is included as a standard feature on ImageStream routers.

opencarp

Implementation of Common Address Redundancy Protocol for Linux, sharing as many features of OpenBSD's carp implementation as possible in userspace.

python-hatools

python-HAtoolsSummaryPython-HAtools is a set of python modules and scripts designed to help you dynamically configure and manage resources commonly associated with high-availability applications on Linux. (Note: python-HAtools doesn't attempt to add any new HA resources to your environment, it ... [More] just makes management of those resources simpler and more flexible) The first release of python-HAtools will focus on block-level storage, and will include tools for managing: iSCSI IET/iscsi-target (http://iscsitarget.sourceforge.net/) Open-iSCSI (http://www.open-iscsi.org) Volume management LVM2 (http://sourceware.org/lvm2/) Replication DRBD (http://www.drbd.org/) Future versions may allow management of additional functions: Heartbeat (http://linux-ha.org/Heartbeat) Multipath IO (http://christophe.varoqui.free.fr/) NFS (client and server configuration) Cluster filesystems GFS2 (http://sources.redhat.com/cluster/gfs/) Lustre (http://lustre.org) OCFS2 (http://oss.oracle.com/projects/ocfs2/) Monitoring Nagios (http://www.nagios.org) Cacti (http://www.cacti.net/) OpenIPMI (http://openipmi.sourceforge.net/) GoalsOne of the goals of python-HAtools is to accomplish its work using the command-line configuration interfaces of the resources it manages. Where it makes sense, we also use status information from the /proc filesystem. We believe this approach has some advantages over library-API integration: Code that's easy for system administrators to follow Compile-free, portable installation The main disadvantage to this approach is performance. It's assumed, however, that the tasks performed by python-HAtools will not greatly benefit from the memory or speed increases to be gained by library-API integration, and that the users of python-HAtools will more greatly value convenience and familiarity. Another goal is to make the tools highly dynamic by storing as little internal state information as possible. We read the state information from the underlying system as often as possible to be sure that information is up-to-date and decisions are made on current state. StatusDevelopment on python-HAtools is just getting started. The iSCSI.Target (IET) module is functional, but is being reworked to conform to the project's goals. The next module to be completed will be iSCSI.Initiator, the client compliment to iSCSI.Target. [Less]

Shadow VRRPd

Virtual Router Redundancy Protocol (VRRP) daemon for Solaris. It uses a GateD style configuration file. This software isn't functional yet.