62 questions
0
votes
0
answers
61
views
Pacemaker dynamic location constraint with expression
I am experimenting with storage clusters using RHEL9.3 and GFS2 with DRBD replication.
So far I found a stable solution by using 3 nodes for main (one is DRBD Primary and mounts the DRBD disk, while ...
- 11
0
votes
1
answer
1k
views
Initializing meta-data on drbd resource wipes existing data?
I upgraded centos 6.4 to 6.10 on 1 node and after that installed drbd package(listed below) stopped working
drbd-km-2.6.32_358.11.1.el6.x86_64-8.4.3-2.el6.x86_64
drbd-km-2.6.32_358.6.2.el6.x86_64-8.4....
- 21
0
votes
1
answer
217
views
Is DRBD split-brain handler called only when after-sb-Xpri is set to disconnect?
I wanted to run a script if a split brain is detected. In the documentation, it is mentioned that we can do that by providing the path of the script like
resource <resource>
handlers {
...
0
votes
0
answers
128
views
Anyone follow this highly-available-mysql-cluster guide witch success?
I am following this guide [Deploying a highly available MySQL 5.6 cluster with DRBD on Compute Engine]2
Although the guide is written for ubuntu-1604-lts, the GCP doesn't have any the image more (I ...
- 135
1
vote
1
answer
632
views
How to calculate progress rate of DRBD?
WinDRBD's progress is only visible when syncing. But I'd like to know how far has gone if the out-of-sync remains.
drbdsetup status foo --v --s
Through the detail view command, the following ...
- 15
0
votes
1
answer
124
views
DRBD ownership issue
I have two cluster nodes server1 and sever2 running on CENTOS7 and I configured DRBD. I have DRBD running on both servers and data is being replicated. The issue is when I perform a test failover the ...
0
votes
1
answer
721
views
MongoDB HA with DRBD ( Active-Standby)
I am working on MongoDB HA. Don't want to go with the HA approach mentioned in mongo official docs due to resource limitation.
I have done the MySQL (Active-Active) HA with DRBD, corosync & ...
- 163
-1
votes
2
answers
2k
views
Failed to install DRBD9 in debian-9 [closed]
I need to upgrade drbd8 to drbd9. for that I following this documentation.
https://www.linbit.com/drbd-user-guide/drbd-guide-9_0-en/#s-upgrading-drbd
step 1
root@oreo:~# add-apt-repository ppa:linbit/...
- 123
0
votes
1
answer
293
views
Geo cluster with pacemaker - quorum vs booth
I configured a geo cluster using pacemaker and DRBD.
The cluster has 3 different nodes, each node is in a different geographic location.
The locations are pretty close to one another and the ...
- 5,003
2
votes
1
answer
2k
views
What's the step to change DRBD IP
How do I change the node IP of DRBD?
This is my config:
resource data {
protocol C;
on server1 {
device /dev/drbd0;
disk /dev/sdb1;
address ...
- 97
0
votes
1
answer
1k
views
Ping constraint not moving DRBD primary
I have a two node cluster (CentOS7-based), intended to be active/passive with DRBD resources and app resources dependant on them and a cluster ip dependant on the apps through ordering constraints. I ...
- 571
0
votes
1
answer
808
views
DRBD Parse error: got 'incon-degr-cmd' (TK 282) on CentOS
Setup
I currently have two NFS servers. And the plan is that they mirror their data to each other in realtime using DRBD and monitor each other using heartbeat.
This is my current /etc/drbd.d/t0.res ...
- 1
1
vote
1
answer
1k
views
Making Windows legacy driver non-stoppable programmatically
I am working on WinDRBD: https://github.com/LINBIT/windrbd
This driver is stoppable (so sc stop windrbd works). However at some points (when there are DRBD devices configured) I want to prevent the ...
- 1,086
1
vote
1
answer
181
views
Is the DRBD configuration-file format a standard one?
Is the configuration-file format that DRBD uses a somewhat standard one with existing parsers in Python or is it not which would require me to write my own parser?
Example:
resource server42 {
...
- 3,174
0
votes
1
answer
500
views
DRBD Split Brain best scenario
I have 2 drbd node (primary/secondary) and I try to solve split brain without any lost data.
Running : Drbd(8.9.10-2), Pacemaker, Corosync, Postgresql
My auto solve config:
net {
after-sb-0pri ...
- 145
0
votes
1
answer
1k
views
DRBD with temprorary hostname change
I have set-up a test 2-node HA cluster for an application which writes data to local disk. DRBD has been set up for this to sync the data onto the 2nd node. My application is having dependency on the ...
- 13
1
vote
1
answer
3k
views
An explanation of DRBD Protocol C
What protocol does DRBD employ to guarantee that it can maintain 2 disks in sync with each other?
Does it use 2-phase commits (or a variant similar to 2PC)?
Does DRBD have an asynchronous/offline ...
- 121
0
votes
1
answer
1k
views
GitLab High Availability (Active - Passive)
My client asked me for a high availability solution for GitLab using two data center. After to read documentation and to use google, I´m very very lost.
The GitLab documentation for High Availability ...
- 1,116
2
votes
1
answer
3k
views
DRBD - automatic recover after disconnect
I have High availability cluster that configured with DRBD resource.
Master/Slave Set: RVClone01 [RV_data01]
Masters: [ rvpcmk01-cr ]
Slaves: [ rvpcmk02-cr ]
I perform a test that ...
- 91
0
votes
1
answer
723
views
loading drbd module in centos 6.7
[root@NAS1 ~]# yum install -y kmod-drbd84 drbd84-utils
Loaded plugins: fastestmirror, refresh-packagekit, security
Setting up Install Process
Loading mirror speeds from cached hostfile
**--> ...
- 140
0
votes
1
answer
2k
views
drbd sync fails with ProtocolError
I currently have a pair of drbd servers that have decided to stop syncing and I can't seem to do anything to get them to sync up again. The sync process occurs over a dedicated crossover cable (1gbps ...
1
vote
1
answer
6k
views
Can't mount DRBD device to directory
I installed drbd for replicate data on two host. After installing successed, I check status drbd:
root@host3:~# cat /proc/drbd
version: 8.3.13 (api:88/proto:86-96)
GIT-hash: ...
- 306
1
vote
1
answer
771
views
Pacemaker and DRBD on Hyper-V
I need to setup two-node Web cluster for Apache web site. I have Hyper-V infrastructure and only two nodes.
The points are load-balancing and high availability.
I installed and configured two VMs ...
- 724
1
vote
0
answers
3k
views
Ideal configuration for two Proxmox 4.1 nodes cluster
The Situation: I have two identical Supermicro servers with a lot of RAM and storage capacity. The servers got an Adaptec RAID Controller, which was used to create a RAID 1 for the OS and a RAID 50 ...
- 11
0
votes
1
answer
1k
views
How to sync configuration files in Tomcat cluster?
I have a Tomcat cluster (Apache httpd front-end, proxying a Tomcat cluster), with 2 nodes in the backend, everything on Windows server 2008. The Tomcat nodes serve a webapp, which has some ...
- 768