5
votes
Running a cluster 24x7 at full load. Possible damages?
how long will it be able to sustain without any physical damage?
If you buy decent production-quality servers then no, you shouldn't see any damage. In fact there's an argument that you'd see less ...
- 101k
4
votes
Corosync/Pacemaker/DRBD Resilience Tuning
It's a misconfigured fencing or quorum pick-up issue. It's a very typical DRBD behavior which works when it works but fails miserably with a split-brain or replicated volumes stuck in a wrong state at ...
- 5,445
4
votes
There is no replication in a HA Cluster
Only one server will work with a data set at a time, while keeping the other server as a backup with realtime data updates. See:
https://syslint.com/blog/tutorial/drbd-%E2%80%93-heartbeat-...
- 606
4
votes
Errors about Making Failover-Cluster on Hyper-V with Win-Server-19 on Powershell
What is the purpose of nesting Hyper-V clusters inside each other? Nested virtualization may be extremely tricky, especially in the networking part. Also, Hyper-V is not the best option for that kind ...
- 6,169
3
votes
Accepted
Windows Server quorum concept and split-brain issue prevention
You've pretty much answered your own question here, but just to confirm, yes - that shouldn't ever be a situation which could arise if you're following the best practices on implementation of such a ...
- 2,667
2
votes
Accepted
Heterogeneous Cluster Solution for R&D
Agree with @NikitaKipriyanov that you cannot combine resources from multiple systems into a single image, although there have been commercial products that did this in the past and they relied on ...
- 861
2
votes
Heterogeneous Cluster Solution for R&D
It's not possible.
Different CPUs means instructions may differ. This is a nightmare if you want to migrate code between CPUs.
Memory latency is in nanoseconds, network latency in tens of ...
- 6,785
2
votes
Can I run a Select query on an SQL dump?
Is there a way to check if the sqldump really has the most up-to-date data in it
Short answer: No.
Longer answer: Yes ...
... but only after restoring it into a running mysql instance.
Unless, of ...
- 1,489
2
votes
"CrashLoopBackOff" while deploying mysql on multi-node cluster
This is half an answer for you:
PS: I also like to know why it shows READY 1/2?
The READY x/y output is telling you how many containers in your pod are "ready". In your Cassandra ...
- 43.7k
2
votes
Accepted
How to parse and filter on dict values on Ansible?
I think you could use the selectattr filter along with map
You could retrieve the UUID of the VLAN like that:
- name: Find VLAN UUID for Cluster01
set_fact:
vlan_uuid: "{{ result....
- 1,112
2
votes
Accepted
Proxmox on Ceph performance & stability issues / Configuration doubts
The issues have been fixed.
There were actually two separate problems:
The upstream switches had configuration issues which caused the network to go nuts (managed by our datacenter partner).
We had ...
- 203
1
vote
Accepted
MaxScale doesn't connect to Galera Cluster
I have just found the solution for my problem. I have checked the full log of MaxScale with docker exec -it <container_id> cat var/log/maxscale/maxscale.log where the root-cause can be found (I ...
- 131
1
vote
Accepted
Howto: Block or File replication across 3+ nodes without a SAN
The SAN model supposes that you have a highly available block storage service - you could implement the same at file level - but this would mean adding more nodes (or putting additional workload on ...
- 21.3k
1
vote
Failover Cluster Manager - Location of the stored clusters
Cluster names are stored in Active Directory, similar to how computer and server names are registered in AD.
- 11
1
vote
Accepted
ceph-deploy install command fails with [ceph_deploy][ERROR ] RuntimeError: configparser.NoSectionError: No section: 'main'
The deployment tool ceph-deploy has been deprecated in favor if cephadm a couple of releases ago. Although this doesn't really answer your question it's gonna be difficult to keep ceph-deploy ...
- 432
1
vote
Accepted
Can Auto-Scaling be considered an advanced concept of Clustering?
No. Auto scaling by itself, the compute instances are not required to be any type of cluster. Rather, it is a capacity management feature. An optional component of an infrastructure.
Cluster is a ...
- 32.1k
1
vote
How to create shared folder with Linux Samba Cluster that is accessible by Windows? (Two PCs in cluster with one IP)
I have Windows Server cluster and it needs a witness. Two types are available – shared folder and shared disk. Having only one witness is pretty dangerous, so a high available witness is needed.
You'...
- 1,240
Only top scored, non community-wiki answers of a minimum length are eligible