At this point in time (May 2002), we estimate there are a few thousand HA clusters in production using heartbeat. Below are a few sample success stories.
http://www6.adc.com/ecom/hier?NODE=OND48067
This is a Cable Modem Termination System (CMTS) which uses Linux for service provisioning and network management. From the web page:
Contains integrated service provisioning and element/network management functions eliminating the need for separate systems while capitalizing on the high availability Linux-based management module.
The second product is the FastFlow Broadband Provisioning Manager.
http://www6.adc.com/ecom/hier?NODE=OND48857
The FBPM provides the same provisioning services that are available on the Cuda 12000 on a stand alone Linux platform.
Hello Alan.
I am using Heartbeat 0.4.9 in a commercial situation.
I work for a company (Lujsansoft) which sells Linux based badgereader systems. I am using VNC so that a. the customers can access it from whatever kind of computer they are using and b. Comtrol rocket port serial hubs so we don't have to deal with the headaches associated with long streches of RS232 or RS485 cabling.
I am using heartbeat to run the badge reader program, the driver for the serial hubs and VNC and it all works beautifully. The installation where I installed my two node cluster is a linear accelerator in Los Alamos NM USA and the badge reader system MUST stay up while the "beam" is running, it is a matter of health and safety.
Setting up heartbeat was cake and pie (piece of cake, easy as pie) I can't believe how easy it is to set up and use. Oh yeah it works perfectly too.
That's my story.
Thanks for maintaining the site. I appreciate it.
From my experience, I was extremely impressed with the ease of installation/compilation on linux, and the stability of the cluster. This cluster has been running for approximately eight months (with forced manual failovers for updates and maintenance), and heartbeat has been running solid with virtually no interruptions in service.
Thanks, Alan, for maintaining this site!
We use Heartbeat together with LVS for redundant load balancing of the webservers on Levonline AB, a webhosting company in Stockholm Sweden.
We also use Heartbeat for redundant MySQL (data is written to two servers and read from the active one), DNS and routing on the same machines.
Here is a simple illustration of our setup.
http://www.levonline.com/support/#lvs
The machines running Heartbeat are two Dell PowerEdge 2300.
Thank you for great software.
One of the leading Bagel quick service restaurant chains in the country has a Mandrake 7.2 cluster running hearbeat and DRBD/ ReiserFS. It serves as the Intranet/ SMTP gateway system for the entire organization (4000+ employees). It also runs an internal website that takes critical data from a legacy DOS system in the stores and imports it via a series of PHP pages and SQL*Plus scripts into the company's Oracle database. That site is also served by the HA cluster, and the data that gets imported is replicated between the systems.
A small independent Cable Television company in Northfield, Vermont
(http://www.trans-video.net -
name used with permission)
HA cluster that runs all of the client/ user services for their High
Speed Cable Internet Service:
DHCP (failover configuration) for provisioning both Cable modems and
Customer systems
TFTP (boot file for cable modems)
WWW site / home pages for users (Apache)
FTP from internal addresses for users to update their sites
SMTP for users mail
All of the above services are managed by Heartbeat for high availability. A slightly outdated description of the installation is documented at http://www.completeconnection.com/?target=/projects/tvcable.php
2 IBM Netfinity 5500 (M10 and M20, 256 Mb RAM, ~18 Gb Hot Swap, etc...). Using Conectiva Linux 6.0 (up to date).
Gives service to ~200 Internal Users, and access to their website (internal webmail and external content) to the Internet.
Gerfor SA: High Available Application servers (xdmcp, vnc) Giving access to applications such as StarOffice, Browsers, and clients of their mission critical system.
2 Compaq ML 350 servers (933 Mhz, 1Gb, 18Gb available to the OS after hw raid, 3 NICs) using Conectiva Linux 6.0 (up to date).
It gives service to 90 "thin clients" (old PCs) normally each server has the half of the clients ("load balancing").
All these implementations were made by Conectiva Colombia (www.conectiva.com.co)
We are currently in the process of developing webSentry, a web site monitoring and service management application, which will be offered as a service. The application is not yet publically available.
High availability was a requirement of webSentry. It includes both batch and online elements that are managed by heartbeat . HA was also beneficial to the other virtual web sites supported by these clustered servers.
Our application infrastructure consists of the following components:
RH Linux
MySQL (with two-way replication between the clustered servers)
Apache (including perl cgi, mod_perl, mod_jk, and mod_ssl)
Tomcat
Resources under heartbeat control:
production VIP
serviceNanny.pl
webSentry Collectors (batch)
serviceNanny.pl is a perl script which (1) starts Tomcat, (2) monitors the health of important online resources (Apache, Tomcat, MySQL, DNS, and gateway access), and (3) takes appropriate remedial action (e.g. restarts Tomcat, initiates heartbeat failover, and reboots the system) to ensure online availability.
we utilize heartbeat in an LVS cluster with mon & ldirectord. future plans for linux clusters include file servers & various other projects, non definite yet. great product :)
We have 4 HA pairs running here at Motorola in Swindon, UK.
Pair1:
HP Netvectras (PII 233MHz), 3GB HD, 96MB RAM, 2x 3com 905, SuSE
Serves SMB front for NFS mounted data on EMC Celerras
Pair2:
HP Netvectras (PII 233MHz), 3GB HD, 64MB RAM, 2x 3com 905, SuSE
Serves site Anonymous FTP front for NFS mounted data on EMC Celerras
Pair3:
HP Netvectras (PII 233MHz), 3GB HD, 96MB RAM, 2x 3com 905, SuSE
Serves SMB front for NFS mounted data on EMC Celerras
Pair4:
HP Netvectras (PII 233MHz), 3GB HD, 64MB RAM, 2x 3com 905, SuSE
Serves SMB front for NFS mounted data on EMC Celerras
All machines are reclaimed - obsoleted from the desktop when we moved to Win2K.
We moved to Linux for this service becuase SMB on Solaris is flaky as hell (our experience) andon HP-UX is slow slow slow.
Another benefit we've found is that we can take the servers down during the day for maintenance without impact to the customer - just failover and get started!
Thanks for a great app.
Damian
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