Recent content by selund

Hello, I'm trying to migrate from vlan to vxlan, and I'm trying to figure out how to best bridge between a vxlan and a vlan. My initial thought was to use a linux vm and just bridge between two interfaces. While this will work, I'm wondering if there is a better way to do this? I know that it's...

Unfortunately that's not how the real world always works. Linux is actually made to use swap when actually needed. Adding more ram won't be the correct way to solve problems in all cases. Nor is it always an option. One of the situations I've experienced this in was on a database server with max...

There are actually a lot of situations where having enough swap space available is cruicial. Yes, having everything in ram usually sems best, but that's not always the case. If you have a workload that allocates and deallocates a lot of memory continiously you might find that having swap...

I've seen a lot people doing the migration using scp, ovftool etc. However, there are a much faster way to do this. In my opinion it's also easier than most other methods. Also the downtime can be made to be as short as a single reboot. Only thing you need is a nfs storage that you can share...

The company i work for currently have hosts scattered in tens (probably in the hundreds by end of this year) of networks where we don't control how the firewalls are configured, so yes some of them probably just drops the packages. My problem isn't that this happens, but my worry is that Proxmox...

I'm working in a environment where we don't have internett access, and I noticed that process of setting up pve-manager takes a long time, so I went digging in the logs. It seems that the proces tries to download from download.proxmox.com and releases.turnkeylinux.org I suspect that this is a...

It's a home lab setup, and I have other methods to backup the firewall. That being said, I think that the problem here is a task order problem that should be fixed just to avoid other similar problems.

A fun small catch 22 situation I managed to create. I've set up a PBS outside my network, and tried to backup my firewall which is running in a vm on PVE. That ended up with a 1 minute timeout trying to connect to the PBS....

Ran into the same problem. The problem running backups seems to be related to the lack of locking on nfs.

I don't think it's disk related, but for what it's worth, we used lvm for all and no cache set for kvm. For our part, we are not going to do anything more whit this, and will end up running one kvm instance on each physical server.

We haven't found the root cause, and it seems to only have an effect when you use Elasticsearch inside a kvm and use percolation. Other usecases of Elasticseach don't show the same behaviour. My suspicion is that we are seeing a bug in Elasticsearch or java that only manifests it self on...

Just to some extent close this issue. LXC isn't the problem here. What we actually see here is that elasticsearch (might even be java) runs about 60% faster in a kvm than on native hardware in our case. Running on bare metal or in lxc has the same performance, while running in a kvm boosts the...

The cpu usage is almost 100% in both cases. The elasticsearch instances are running percolator, so its a bit different from normal elasticsearch usage. We have run the testes on the same set of physical servers, and they are not running anything else during the tests.

I my mind LXC should always be much more efficient than kvm. However I've got a customer who try to run a large elasticsearch clust, and the the tests they have run show almost double performance running on kvm vs lxc. Going forward the elasticsearch cluster will be moved to bare metal, but I...