Server Fault Stack Exchange
Server Fault Stack Exchange

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

143 questions
27
votes
9 answers

Alternatives to Heartbeat, Pacemaker and CoroSync?

Are there any major alternatives for automatic failover on Linux besides the typical Heartbeat/Pacemaker/CoroSync combinations? In particular, I'm setting up failover on EC2 instances, which only supports unicast - no multicast or broadcast. I'm…
organicveggie
  • 1,061
  • 3
  • 14
  • 27
26
votes
3 answers

How can I deploy a scalable, reliable haproxy cluster on Amazon EC2?

We need some more advanced functionality than ELB provides (mostly L7 inspection), but it's not obvious how to handle things like heartbeat and high availability with something like haproxy using EC2. There's a high likelihood we'd need 3 or more…
Don MacAskill
  • 1,808
  • 3
  • 16
  • 22
21
votes
2 answers

What is the difference between keepalive and heartbeat?

I want to structure a high available server cluster . Now I want to know detail about keepalive and heartbeat, what is the difference between both, and How to choice one.
aboutstudy
  • 957
  • 3
  • 10
  • 10
20
votes
1 answer

Which messaging layer to use, Heartbeat or Corosync?

Just about finished my research into setting up a web server cluster and I'm still undecided as to which messaging layer to use with Pacemaker. The servers I'm using are all Fedora so both layers are available via YUM, both are well documented and…
Jeff Busby
  • 521
  • 1
  • 3
  • 9
19
votes
9 answers

Architecture for highly available MySQL with automatic failover in physically diverse locations

I have been researching high availability (HA) solutions for MySQL between data centers. For servers located in the same physical environment, I have preferred dual master with heartbeat (floating VIP) using an active passive approach. The…
Warner
  • 23,440
  • 2
  • 57
  • 69
12
votes
6 answers

How do you automate failover on EC2?

Of the folks managing their own clusters (i.e. not using/paying for Amazon Autoscale, Rightscale, Scalr, etc.), how are you managing your instances on EC2 and handling (e.g.) failover? I'm wondering if most folks just end up writing their own…
Yang
  • 1,655
  • 6
  • 20
  • 35
11
votes
7 answers

How can I balance incoming web traffic amongst N apache servers?

I am looking to use something like Heartbeat/Squid/Varnish/etc to balance the amount of incoming traffic amongst the internal apache instances. This would have to be software and not hardware as all my stuff is run on VPS. I don't have a lot of…
Jackie
8
votes
3 answers

Is there a way to force heartbeat to add new ip addresses to the system without a full restart?

We utilize heartbeat for High Availability. I'd like to add an additional ip address to the heartbeat cluster, but I don't want to do a full restart of the cluster in the process. Is there a signal I can send to heartbeat that would prompt it to…
Peter Grace
  • 3,446
  • 1
  • 26
  • 42
7
votes
1 answer

Heartbeat meatware STONITH on kernel panic

I have a two node cluster with heartbeat and DRBD managing a mysql resource. The failover works great if I halt the primary, reboot it, or disconnect the network connection. However, if the primary suffers from a kernel panic (simulated by running…
Ethan Hayon
  • 235
  • 1
  • 6
6
votes
2 answers

crm command(cluster managment for pacemaker) not found in latest Centos 6

I have done such setup before, was no any issues. Now i can't do "crm configure" becuase no crm command availible in current package. Am I missing something? Maybe it replaced by other way/command? [root@node1 src]# find / -name crm*|grep…
arheops
  • 708
  • 1
  • 5
  • 13
6
votes
5 answers

Is it "OK" to use a low end NIC for a dedicated heart beat between two servers?

I've got nice big server-grade NICs on my servers busy interfaces. Soon I'll be setting up a cluster that will have a dedicated heat-beat. Do I really need to use an expensive server grade NIC for this? Or will a low-end desktop NIC suffice?
Stu Thompson
  • 3,339
  • 6
  • 30
  • 47
5
votes
2 answers

How to suppress a Heartbeat resource from starting in failover data center?

I have a pair of CentOS Linux servers in each datacenter. They have failover within each datacenter, managed by heartbeat and DRBD (I know these are outdated tools, but they are stable, so there's no desire to change them). They also have the…
Bill Karwin
  • 206
  • 1
  • 7
5
votes
2 answers

Heartbeat/DRBD failover didn't work as expected. How do I make the failover more robust?

I had a scenario where a DRBD-heartbeat set up had a failed node but did not failover. What happened was the primary node had locked up, but didn't go down directly (it was inaccessible via ssh or with the nfs mount, but it could be pinged). The…
Quinn Murphy
  • 443
  • 2
  • 7
4
votes
1 answer

Relation between Heartbeat and Corosync on openSUSE

I'm moving a Heartbeat + Pacemaker setup to openSUSE 12.1. It turns out that Heartbeat isn't supported on this platform anymore, and therefore it is not available from the official repos. Switching to Corosync isn't really a problem, but I'm…
Szymon Jednac
  • 143
  • 6
4
votes
1 answer

Heartbeat won't successfully start up resources from a cold boot when a failed node is present

I currently have two ubuntu servers running Heartbeat and DRBD. The servers are directly connected with a 1000Mbps crossover cable on eth1 and have access to an IP camera LAN on eth0. Now, let's say that one node is down and the remaining functional…
Matthew
  • 204
  • 6
  • 15
1
2 3
…
9 10