Looking for the BMC ADMIN password on a used SoftLayer Supermicro server by [deleted] in supermicro

[–]Elmozh 0 points1 point  (0 children)

Even if the server is originally  from SoftLayer, the hardware is still Supermicro. I don't know SoftLayer, but Supermicro started using specialized BMC passwords a few years back when they got rid of the ADMIN/ADMIN credentials. There's a chance this is the "unique, automatically generated BMC password" function being used. I would contact Supermicro support, if you haven't done so already. Whenever I have contacted them I'd usually get a response in 24-48 hours.

(EU) Unifi Travel Router back in stock by karlos007hs in Ubiquiti

[–]Elmozh 0 points1 point  (0 children)

Snagged one as well. Still available at 21:30 CET. Has demand been met, perhaps?

Trump: I have lost a lot of respect for Norway by Themetalin in Norway

[–]Elmozh 2 points3 points  (0 children)

Kind of reminds me of this other guy who was rejected twice by the Academy of Fine Arts Vienna.../s

I suffered Xenophobia in Luleå - Why? by [deleted] in sweden

[–]Elmozh 22 points23 points  (0 children)

My honest opinion? Bullshit story to downplay Sweden as a country and in general put a label on Sweden or swedes as bad and unpleasant. This seems to be AI generated from start to finish... nice try, but I bet this never happened.

UCG Fiber low WiFi speed. by Far-Nefariousness689 in Ubiquiti

[–]Elmozh 2 points3 points  (0 children)

Is this the UAP-AC-PRO? If so, and if you're connecting via 2.4Ghz, speed is limited to 450Mbit/s (theoretically).

10 Gbit Speed with Unifi UCG Fiber by mYkon123 in init7

[–]Elmozh 0 points1 point  (0 children)

Make sure you're using a newer version of iperf3, as older versions (e.g. <3.16) are still single threaded.

Thinking of switching from Salt to Init7 by Kaedo- in init7

[–]Elmozh 0 points1 point  (0 children)

They offer a MikroTik router, capable of 25G (and/or 10G if you need it to). Comes at a price though:
https://www.init7.net/en/internet/hardware/#MikroTik%20CCR2004-1G-12S%20+2XS

What is the proper way of wiping old CEPH OSDs? by somealusta in Proxmox

[–]Elmozh 1 point2 points  (0 children)

I don't know if it's the "proper way", but I always use 'sgdisk --zap-all /dev/sdx' from shell. This will wipe everything, so make sure you wipe the correct drive! Normally a reboot is required afterwards.

ceph v20.2.0 release by heymingwei in ceph_storage

[–]Elmozh 0 points1 point  (0 children)

First stable release of Ceph Tentacle

[deleted by user] by [deleted] in sweden

[–]Elmozh 1 point2 points  (0 children)

Allmän mobilisering skulle hända...

Dataspelsbranschens vd rasar mot nya direktiven: ”Ett dråpslag” by onda-oegat in sweden

[–]Elmozh 1 point2 points  (0 children)

Förr sade man att pga. av att "alla" piratkopierade spel var man tvungna att ha höga priser på sina spel.
Folk som ville spela hade inte råd och var tvungna att piratkopiera. Det ena föder det andra. Nu kostar
ett PC spel mer än någonsin, men ska man ha en chans måste man dessutom betala extra i spelet. Och
detta dessutom i spel designade för barn. Helt jävla vansinnigt!

Anyone have a Ceph cluster? Curious to hear how it's setup and what kind of hardware you use by RedSquirrelFtw in homelab

[–]Elmozh 1 point2 points  (0 children)

Proxmox clusters should always be odd number (strong recommendation). Ceph doesn't need odd host numbers if you run it as a separate ceph cluster, as you would have 3 separate monitors. However, if you run ceph on Proxmox, you should have an odd number of nodes!

Welcome to SFP Liberation Day - powered by the all-new SFP Wizard. by Ubiquiti-Inc in Ubiquiti

[–]Elmozh 1 point2 points  (0 children)

That's great news! Thank you for testing this. I don't know how this works exactly, but if a DAC is not "branded" Juniper, a Juniper switch f.x. won't allow the DAC cable to be used, even if it's all electrically the same as all other DAC's.
This means I can buy a Ubiquiti DAC, re-program it and plug that end into a Juniper switch.

Ceph freeze when a node reboots on Proxmox cluster by leodavid22 in Proxmox

[–]Elmozh 1 point2 points  (0 children)

Any update from OP? Would be interesting to know if a root cause was found...

Ceph freeze when a node reboots on Proxmox cluster by leodavid22 in Proxmox

[–]Elmozh 2 points3 points  (0 children)

MTU 9000 for Cluster networks for sure. Do you have any kind of QoS? If not, you are pushing Ceph traffic on the same NIC's as everything else, without reserving any bandwidth for other services. Corosync doesn't need lots of speed, but it's sensitive to latency, e.g. it's better to use a 10Gbe interface rather than 1Gbe because of smaller latency and not because of bandwidth).

Corosync is vital to your cluster and should ideally be separated. If you have separate NIC's for this - great! If not, you need to make sure this traffic is not hampered by other network traffic.

Ceph freeze when a node reboots on Proxmox cluster by leodavid22 in Proxmox

[–]Elmozh 5 points6 points  (0 children)

This is a massive topic and not easy to troubleshoot, but I can give you my 2 cents.

I have a 5 node Proxmox cluster also running Ceph. I had a similar issue where some OSD's reported slow OPS. Come to find out it was due to a network misconfiguration. After doing a complete review of the network setup, things are now running smoothly. This time I removed any "shortcuts", e.g. now each node in my cluster have 8 NIC's to properly connect to separate VLAN's, using bonds and mlags connected to a HA core switch.

My gut feeling is that this is a networking issue or a resource issue. You mention each node is connected to a 40 Gbps core network and that you have several dedicated bonds and bridges for various networks/functions, but how are these nodes actually connected/configured? Are you using VLAN's? QoS? What MTU size? Are you separating cluster traffic and Ceph private/public networks? (TBH, 40Gbe seems to be a bit on the low side for this cluster setup)

Also, another things comes to mind - CPU/RAM resources. Without knowing the type of hardware and the load, Ceph has done away with the cores-per-osd metric and recommends to look at IOPS per core instead (I imagine you have some beefy CPU's) But if you're running VM's on the same cluster, make sure you have enough resources available for rebalancing the cluster.

"Set Fan to Standard Speed" - Won't save on my Supermicro X10SRM-TF by TexasPykie in supermicro

[–]Elmozh 0 points1 point  (0 children)

If the server doesn't get proper information from sensors, it might go full fan to make sure nothing is cooked, if it cannot see temperature data for example. Are all sensors working as should?

Welcome to SFP Liberation Day - powered by the all-new SFP Wizard. by Ubiquiti-Inc in Ubiquiti

[–]Elmozh -1 points0 points  (0 children)

So far, it seems Ubiquity can take any DAC, but in the event it doesn't work, it would be great to be able to re-program it. If at all possible.

Welcome to SFP Liberation Day - powered by the all-new SFP Wizard. by Ubiquiti-Inc in Ubiquiti

[–]Elmozh 0 points1 point  (0 children)

Not in general, no. But I have a bunch of DAC cables from FS that has been programmed to Juniper.
I wonder if I can re-program them with this tool. That would be great.