0
votes
0answers
19 views

HA - Heartbeat / Pacemaker - CentOS - Manual Symlinks

I have a MySQL Master <> Master pair setup for HA. I would like to setup automatic failover not just if the node hosting the current write mysql instance goes down, but also if the mysql instance ...
1
vote
1answer
319 views

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 ...
0
votes
0answers
47 views

DRBD mount randomly unmounts itself

We have setup setup an NFS HA "cluster" using drbd/heartbeat. Everything works as expected when tested... If the instance nfs1 goes down, nfs2 picks up and everything seems to be fine. On both ...
0
votes
0answers
126 views

configure heartbeat HA on Amazon VPC instance

I'm trying to implement HA with Heartbeat (and monit) on two Amazon VPC instances. I read many articles about it and I tried all possible options I can think of. few articles I read (don't work for ...
1
vote
1answer
204 views

SSL Session Persistence - HA Heartbeat

I have two servers, let's call them Milo and Otis. Now Milo and Otis are setup to be an active-passive pair of highly available servers where Milo is usually the master and Otis stands-by waiting for ...
0
votes
1answer
427 views

Howto setup 3-node heartbeat cluster?

I want to set up a virtual IP on three nodes using heartbeat. Currently, I have this: ha.cf: # Facility to use for syslog()/logger (alternative to log/debugfile) logfacility local0 # ...
2
votes
1answer
367 views

Linux HA Heartbeat Virtual IP Switching with domain name linked to it

I have heartbeat set up on two servers like so: Master: 10.15.1.50 Backup: 10.15.1.51 (Virtual IP: 10.15.1.52) So, the master always has 10.15.1.52 as well, but if it goes down, the backup will ...
1
vote
1answer
311 views

could heartbeat v3 monitor service/resource status without pacemaker?

I am trying to setup a HA system based on CentOS, I want to use heartbeat v3 for the "heartbeat" mechanism, resource start/stop, looks heartbeat can get it done. But about the resource status, ...
0
votes
1answer
39 views

Heartbeat external plugin configuration format

I have developed an external Heartbeat v1 plugin, which expects its configuration by means of environment variables. AFAIK, this is what Heartbeat provides when configuring the plugin using the ...
1
vote
1answer
484 views

How to setup heartbeat for IP fail over on SSH failure

I wonder if anyone can help me, I am trying to setup heartbeat on a redhat 5 to failover an IP address when ssh stops responding on a server. So basically you ssh to a VIP and then get put through ...
1
vote
1answer
369 views

IP failover on different subnets

I have two real servers, on different subnets, each one with a permanent IP, and with a failover IP that can be used by either server. The hoster provides an API with which I can assign the failover ...
1
vote
2answers
278 views

Linux High Availability

I have two Linux Active/Passive nodes on which i have the same simple processing application(not webapp). I just need to have a HA cluster when one machine is down the application on the second takes ...
6
votes
3answers
2k views

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 ...
6
votes
2answers
5k views

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.
0
votes
2answers
2k views

heartbeat: find out machine's status within a cluster?

I'm trying to do some heartbeat debugging. Is there a simple way to ask a machine whether it thinks it's part of a cluster, and whether it's the master or the slave? I've tried $ heartbeat -s ...
2
votes
1answer
1k views

heartbeat: Bad nodename in /etc/ha.d//haresources [node1]

I'm trying to start heartbeat on Ubuntu 10.04 with service heartbeat start, but getting the following errors: heartbeat[24829]: 2011/11/22_19:31:07 ERROR: Bad nodename in /etc/ha.d//haresources ...
0
votes
1answer
554 views

Heartbeat (without ldirectord etc) for a floating IP address?

I have two load-balancing servers running mod_proxy_balancer. Each server balances between two web servers. Now I'd like to find a way to share a single IP address between those two load-balancing ...
2
votes
1answer
473 views

Heartbeat is giving me a heartache

I have 2 Ubuntu 11.04 VM's on which i have installed Heartbeat + apache2 to achieve a "high availability" setup. Heartbeat is up and running on both but im not able to ping the Virtual IP (cluster ip) ...
0
votes
1answer
223 views

Is there a good resource file for heartbeat/pacemaker to control Varnish?

We use the Varnish HTTP accelerator, and heartbeat. It would be good to have heartbeat aware of varnish so it can handle moving IPs and starting up varnish as one service and ensure that the route ...
0
votes
1answer
1k views

Pacemaker complex resource colocation

I am working on a pacemaker project for our master and slave databases to perform IP based failover. There will be two IP resources, one for the master, and one for the slave that have to move ...
0
votes
2answers
73 views

Checking if server is alive and taking action if it isn't [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? I am looking for a monitoring solution for a server farm. It should resolve following issues: Detect if the host has ...
2
votes
1answer
272 views

Change hostname on linux ha failover case

I have configured two machines to do a warm standby so that machine 2 can take the ip of machine 1 if that should fail and become its replacement. sadly, thats not enough, i need to change the ...
0
votes
3answers
2k views

Pinging Virtual IP for Linux HA cluster from a different subnet does not work

I have setup a Linux cluster with Corosync/Pacemaker, and the two cluster nodes are within the same subnet sharing a virtual IP. For machines within the same subnet, they can ping the virtual IP ...
14
votes
7answers
16k views

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 ...
2
votes
1answer
2k views

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 ...
2
votes
3answers
1k views

Varnish & Heartbeat as loadbalancers

Here is the set up I am trying to accomplish So, what I'm trying to accomplish is: a user goes to 10.0.0.1 it passes it to whichever loadbalancer is managing the requests. I then want varnish ...
1
vote
1answer
655 views

Replacement command for hb_takeover

I recently installed the latest DRBD on Ubuntu 10.04 and would like to issue a one-step command to test failover to demonstrate to the powers that be the simplicity of failing over. In previous ...
1
vote
1answer
639 views

Heartbeat not taking its resource

So I have heartbeat installed, I followed a config guide where I literally changed the IP's of the guide and it's not working as it should :(. The reason the eth numbers are obviously different. I ...
2
votes
1answer
1k views

Linux heartbeat: which one becomes master?

Suppose I confiugred 2 machines to be active/passive with the linux heartbeat and pacemaker, then I create a resource group in node1, commit it. If I am correct the configuration will be propagated to ...
2
votes
3answers
2k views

Linux Virtual IP Options

There seem to be lots of options in Linux to provide a virtual IP for failover between multiple hosts. Some that I have found are heartbeat, vrrpd, carp, and keepalived. In Linux I only have ...
0
votes
3answers
577 views

Heartbeat (Linux HA) and NetApp?

Does anyone have any experience setting up a high availability two node Linux cluster using heartbeat (linux-ha.org) and NetApp storage (preferably using SnapDrive for Linux)? Basically I would like ...
2
votes
2answers
1k views

Unexpected start of already-primary server processes when heartbeat on secondary is stopped

I've got an active-passive Heartbeat cluster with Apache, MySQL, ActiveMQ and DRBD. Today, I wanted to perform hardware-maintenance on the secondary node (node04), so I stopped the heartbeat service ...
2
votes
1answer
5k views

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.
4
votes
3answers
2k views

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 ...