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Questions tagged [heartbeat]

heartbeat was initially developed by Alan Robertson. Later SuSE got into as well (Lars Morowski). It started as a simple two-node-cluster with ASCII-configuration files (v1-syntax) and developed into a complex cluster with xml-configuration (v2).

This wikipedia-entry explains it further

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DRBD with MySQL

Question about using DRBD to provide HA for MySQL. I need to be sure that my backup MySQL instance is always going to be in a functional state when the failover occurs. What happens, for example, if the primary dies part way through committing a…
tdimmig
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Monitoring Varnish with Heartbeat and Pacemaker

I have a pair of servers setup as high availability load balancers/reverse proxies. Each runs Ubuntu 12.04 x64 Server, Varnish, Heartbeat and Pacemaker, with Varnish load balancing traffic to back-end servers. If either of the load balancers falls…
jetboy
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relation between heartbeat,openais,corosync

i am planning for high availability on lucid ubuntu, i started with drbd after a simple configuration on drbd I went to heartbeat and had a simple config on it too. on drbd official site a document told me heartbeat is legacy and i should meet…
amin
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Red Hat/CentOS cluster compared to HeartBeat?

What are the main differences (other then UI) between RH/CentOS cluster and heartbeat? I have some experience using heartbeat, but wondered what the RH/CentOS provides, and looking at docs it seems more or less the same, plus shared storage support…
SyRenity
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Do Pacemaker, Heartbeat, etc. make sense for EC2?

Does the Pacemaker ecosystem (Corosync etc.) make sense in the context of EC2? Up till some point, Corosync required IP multicast (not available on EC2), but I think it has broadcast now. Still, are Pacemaker et. al. the right tool for a cluster to…
Yang
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Data loss due to MySQL DRBD Heartbeat failover script

Using DRBD version: 8.2.6 (api:88/proto:86-88) Here is the contents of /etc/ha.d/haresources db1 192.168.100.200/24/eth0 drbddisk::mysql Filesystem::/dev/drbd0::/drbd::ext3::defaults mysql and /etc/ha.d/ha.cf logfile …
Andy
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Reasonably-priced, multiple endpoint heartbeat software

We've got four servers in use for a mission-critical application that all need constant connectivity to each other--six always-up connections in total. I need a way to monitor these connections and fire off, at the very least, an email when any one…
Brennon Bortz
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Heartbeat vs UCarp

Can anyone explain what is the major difference between Heartbeat and UCarp for IP fail-over scenarios? They both seem to provide this functionality, perhaps UCarp simpler to set-up? Thanks.
SyRenity
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DRBD/LVM/Xen Setup not re-syncing/updating

I have a problem with a HA Cluster running on CentOS 5.4 x86_64. Software used: DRBD 8 (kmod-drbd-xen-8.0.16-5.el5_3.x86_64 / drbd-8.0.16-5.el5.centos) Heartbeat LVM2 Xen 3.1.2 My DRBD configuration syncs a logical volume. When I first create the…
SBO
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High Availability/Failover hardware hookup

I'm learning about clustering and high availability techniques, and stumbled upon an article about configuring a network with a pair of servers, using DRBD for replication and heartbeat for monitoring and failover. The article states that I should…
Fractalizer
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Importance of ha.cf file in a heartbeat/pacemaker environment?

I'm having a few issues trying to understand ha.cf and how the cluster picks up on updates. For example, when creating a new cluster, I usually: Set some default options in ha.cf on node 1 - node x Start the cluster. Run crm on any node, configure…
William Hilsum
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multicast address use in corosync

I'm wondering about the purpose of the multicast address in the corosync messaging software : Since we have to bind each net interface with an IP address and a specific port, and each ring communicate through those IP,I don't understand why we have…
Kuruwan
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Force heartbeat change active node

Is there a way to force heartbeat change active node? Or may be force to node to release resources so that one of other node take it. Ubuntu 12.04 Heartbeat
Ahmet Karakaya
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Heartbeat Pacemaker 3 node/ip failover

I have setup two node active/active ip failover with heartbeat and pacemaker following the link at zivtech on the two load balancers for the backend web servers. Two LBs has public ip each which is shared for failover and I checked if the ips are…
user53864
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Start heartbeat automatically on reboot?

Newbie question, sorry - I've been googling 'start automatically on reboot ubuntu' and the like, but I'm not sure I've found the definitive answer. I'm using Ubuntu 10.04 and I would like to make sure that heartbeat starts automatically whenever…
Richard
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