-2
votes
1answer
67 views

What's the best way to sync folders across 03 or more webservers? [closed]

I have 03 servers and I want to sync some folders across them. I'm using DRBD + OCFS2 for a year or so, but it doesn't support more than 02 servers right now. I read about GlusterFS and CEPH, but ...
0
votes
0answers
29 views

Repair tables after pacemaker + drbd migration/failover

I have a master/slave pacemaker/drbd cluster that handles mysql, apache, and some other stuff. I'd like to have mysql automatically repair tables (mysqlcheck -A --auto-repair or similar) after ...
0
votes
2answers
98 views

Why does DRBD infrastructure resyncs whole partition several times a day

I have a Primary/Secondary 2 nodes DRBD setting as shown global { usage-count no; } common { syncer { rate 4M; } } resource r0 { protocol B; startup { wfc-timeout 15; ...
0
votes
2answers
293 views

Using DRBD with 100mbit uplink

we are planing to use drbd to sync two servers (different hardware) to get kind of HA in case the master server dies. The servers are hosted physically in the same datacenter (Hetzner in germany) and ...
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 ...
2
votes
0answers
852 views

LVM DRBD Shared between nodes proxmox

Context : I have proxmox cluster with the volume group shared with drbd for the VM - KVM. I have a problem with drbd. Indeed, when a node disconnect, the associate link between the differents nodes ...
5
votes
1answer
3k views

mount.ocfs2: Transport endpoint is not connected while mounting…?

I have replaced a dead node that was running in dual-primary mode with OCFS2. All the steps work: /proc/drbd version: 8.3.13 (api:88/proto:86-96) GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 ...
1
vote
2answers
369 views

Drbd Primary/Primary + iSCSI: accessing to different files avoids split brain?

I have a question / curiosity about split-brain on a Drbd Primary/Primary configuration. Supposing two nodes (hosts), host1 and host2 configured with Drbd Primary/Primary and two different shares ...
6
votes
2answers
3k views

Can not switch drbd to secondary

I'm running drbd83 with ocfs2 in centos 5 and planning to use packemaker with them. Afer some time, I'm facing drbd split brain problem. version: 8.3.13 (api:88/proto:86-96) GIT-hash: ...
4
votes
2answers
9k views

How to setup STONITH in a 2-node active/passive linux HA pacemaker cluster?

I am trying to setup an active/passive (2 nodes) Linux-HA cluster with corosync and pacemaker to hold a PostgreSQL-Database up and running. It works via DRBD and a service-ip. If node1 fails, node2 ...
2
votes
1answer
448 views

Ganeti and automatic failover

I'm building a simple 2-node cluster with Ganeti+DRBD... What is the recommended way to setup automatic failover? I'm used to Heartbeat, but they say it should be avoided with my setup.
1
vote
1answer
723 views

Best RAID setup for DRBD

I would like to setup a two nodes PROXMOX cluster with DRBD storage. The nodes will be connected by gigabit ethernet. What would be the best storage setup in terms of reliability, performance and ...
1
vote
1answer
1k views

Cheap, reliable high availability solution?

We're looking for a way to improve the reliability of one of our servers (Apache/MySQL/Virtualmin setup). So far, we've had every possible kind of clusterfuck with that server in the past six months ...
0
votes
0answers
297 views

Failover clustering without losing client connections

I need to deploy an FTP server in a high-availability configuration. So far I've used Windows Failover clustering (using Win 2k8 Enterprise) and DRBD in Linux. Both do enable me to develop a failover ...
0
votes
1answer
631 views

after split brain recovery filesystem not mounted

I have an active/passive high availability cluster with pacemaker+split brain. After split brain condition I use automatic split-brain recovery to recover my systems. The problem is that since file ...
1
vote
1answer
128 views

Predict the number of primaries after a split-brain situation

I am trying to avoid a split brain situation using automatic split brain recovery policies explained at http://www.drbd.org/users-guide/s-configure-split-brain-behavior.html How to predict which ...
1
vote
1answer
665 views

Snapshot/rollback in Kvm using DRBD

I want to use the HA on a virtual machine on two server using KVM/libvirt. I placed the image on a partition using DRBD. I'm using the qcow2 format and i'm taking the snapshot, using virsh ...
1
vote
1answer
668 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 ...
0
votes
1answer
446 views

DRBD Replication failure

A couple of weeks ago I setup a 2 nodes CRM system with one of the resources managed being MySQL over DRBD. Today for maintenance reasons I restarted both nodes but now they can't connect to each ...
1
vote
3answers
821 views

When to use MySQL replication or DRBD for HA on Xen VM?

I'm setting up a database which needs to be needs to provide High Availabilty. My primary concern is high performance and robustness (I don't want something that will fail fast and badly). The ...
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 ...
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 ...