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@KILLERTX955 ай бұрын
Hey Christian. Just so you know, you don't need a dedicated "nic" for proxmox clustering. Just a dedicated network, a vlan works more than fine. Using a vlan also means you can bond your NICs giving you overall better performance and redundancy. I recommend in your case, bonding the SFP ports, then bonding the bond with the inbuilt ethernet for fail over. At that point you can vlan out to your hearts content :). This is also how I handle my ceph network. (My team and I manage a proxmox cluster at work, I only watched this video because I really enjoy your content)
@jttech445 ай бұрын
I run proxmox at work, with a big cluster, multiple shared storage devices. It works great, and, I'm happy to see you added a qdev to your cluster, because it really is needed to maintain cluster integrity. As far as shared storage goes, any cheap NAS will work. I'd recommend something that has NFS shares. For homelab, gigabit is mostly fine unless you have a ton of storage. The price jump networking wise to 10gbps isn't bad, but, the storage price jump that can actually utilize that network speed can be quite expensive.
@shephusted27145 ай бұрын
I just went to 2.5 - it was unimpressive but going to jumbo frames adds 35% boost
@kristopherleslie83435 ай бұрын
A 10 gig card is dirt cheap
@jttech445 ай бұрын
@@kristopherleslie8343 Yes, as I said, networking isn't too bad, getting storage fast enough to actually use it is fairly expensive.
@jonathandavis47115 ай бұрын
Isn't any cheap NAS a massive failure point that can take out the entire cluster?
@kristopherleslie83435 ай бұрын
@@jonathandavis4711 depends how you build things. Just saying you have something doesn’t imply it works or is bad. How was it setup and engineered? It’s people with raspberri pies as nas. You can use the synology os on x86.
@wstrater5 ай бұрын
I vote for a CEPH cluster! I would love to see you set up a CEPH Object Store and File System on your 3 ProxMox servers instead of relying on a TrueNAS server or other NAS. I understand that KZbin content creators have a need for a lot of storage and high speed networking but not the average person running a home lab. Having a “local” file system for your work load that is mirrored to other servers would be very appealing.
@solverz40785 ай бұрын
FYI, check your VM CPU type is not "Host" as both PVE hosts will definitely need the same CPU if "Host" is choose but should be fine with most of the other CPU Types.
@joost007195 ай бұрын
This is what I do. I can migrate a vm from an Intel based node to an amd based node
@solverz40785 ай бұрын
@@joost00719 *Live migrate*
@Darkk69695 ай бұрын
@@joost00719 Same here and works fine. I also have a mix Intel and AMD CPUs.
@zyghom5 ай бұрын
I am wondering: I have 2 machines, one is Ryzen 7 and another is Ryzen 9 - would in this case "host" be ok or not? I understand it is abouch architecture nor really the CPU type
@joost007195 ай бұрын
@@zyghom Just use kvm64
@jkotran5 ай бұрын
Christian, you can do a poor man's HA with local disk by scheduling replication of your VM's. That way a copy of your VM is standing by on the failover node. Also, I didn't have luck with SSD RAID for hosting VM's. The cost was exorbitant, the capacity was too low for my purposes, and the i/o wasn't much better. I went with more HDD's and an SSD ZFS read/write cache. P.S. You're doing great work. Thank you for sharing and for your joyful presentation style.
@lensherm5 ай бұрын
Exactly! I used to have a 3rd server running TrueNAS Scale with NVME shared storage. Eventually I retired it, since I got a little tired of the extra high-pitched 1U noise. Now I just have NVMEs in the two ProxMox servers for VM storage and have set up replication for every 5 minutes. Works fine for my needs.
@ivanmaglica2645 ай бұрын
I run two node Proxmox cluster at home with one of VMs being a router. Nothing beats migrating router to second node, while performing upgrades on first one 😀
@ryuzakisama5 ай бұрын
Agree. I have the same setup
@zyghom5 ай бұрын
nothing beats router to be on ... dedicated machine ;-)
@Carlos-Rodrigues5 ай бұрын
Agree. Same setup here too.
@scockman5 ай бұрын
Christian, I have been running Proxmox for ~3 years now in my home lab and used a TrueNAS shared storage solution. But mid-year last year I decided to add a 3rd node to my setup and implemented an all SSD Ceph Storage. So far it has been flawless.
@JonatanCastro5 ай бұрын
@christianlempa I recently created my Proxmox node and had the same problem when migrating VMs, but I fixed it by selecting on the VM configuration > Hardware > Processors > Type > x86-64-v2-AES. This works flawlessly between my Intel N100 and my i7 6700T
@mistakek5 ай бұрын
I was going to mention this also but you beat me to it. This is the way for different CPU's. Just find out the common instruction sets and use the highest x86-64-Vx so your cpu's can use those instruction sets.
@christianlempa5 ай бұрын
Thanks! That's a good tip, I will try that :)
@joshuakunz53685 ай бұрын
Christian during a Stream: "you know energy is realy expensive here, i was thinking about downscaling" Also Chsiatian: "wanna se my new 2 node pve cluster"😂😂😂 Ps. Love your content
@christianlempa5 ай бұрын
:D :D :D
@AlexOlivieruk5 ай бұрын
You can do HA with two nodes by setting up a replication job of the VM between the two nodes. That way there is an (older) copy of the disks on the other node so HA will be able to start up on the 2nd node.
@solverz40785 ай бұрын
ALL cluster nodes need to have the latest live data for it to be classed as HA. Otherwise you could run into some nasty split brain situations depending on what you are running in the VMs.
@ivanmaglica2645 ай бұрын
For HA you definitely have to assess what you want vs. what you actually need. Having HA cluster with only single node shared storage, you are back to square one on being fully redundant.
@christianlempa5 ай бұрын
True! That's why I see HA in a Homelab only as a fun/hobby/testing project, not really a prod environment.
@KingsOfNerdonia5 ай бұрын
I have successfully running a Proxmox cluster with 2 nodes and a quorum device in my small home lab with a simple storage sharing solution without external network shares. Both nodes have a dedicated SSD with the same size just for this purpose. How to set it up? On the first node you go to disks, create ZFS, select the disk and give a name (this name should be a general name, not dedicated to a node, like 'pve-data' or something similar), select add storage, everything else on default and check the box on the disk you want to have as storage in the device list, click on create. The first node now have a new storage. On node 2 do the same, go to disk, create zfs, now important use the same name like on node 1 (in my example 'pve-data') and also it is very important to deselect the checkbox 'Add Storage', select the disk from the device list and click on create. After that you can go to Datacenter -> Storage, select the ZFS storage 'pve-cluster' and click on Edit. In the dialog you select all nodes in the dropdown menu named Nodes. After that the nodes will be come the storage listed as local storage on each node. With replication tasks for each VM or LXC you can set how often a storage of an VM or LXC will be synchronized between the nodes. In HA you can also set the list of containers or VMs you want to have migrated live between the nodes. You have to do this for each VM or LXC container, but it works very well for me. Thank you for covering this Proxmox topic. Hope to see more of this.
@DustinShort5 ай бұрын
You should also be able to set the "CPU TYPE" under your VM hardware to a version supported by both processors (like x86-64-v2/3/4 processors) to improve live migration compatibility. PVE has a ton of options for each generation of chips going back to 486, so you can really tune in the instruction sets made available to the VM this way. Might be worth testing if you have a mixed cluster environment.
@christianlempa5 ай бұрын
Thanks! good tip!
@romayojr5 ай бұрын
i’ve been running proxmox 3 node cluster with ceph ha for over 6 months now and it’s been stable so far. i even upgraded to proxmox 8.1 from pve 7 without any issues. curious why you decided not to go this route. maybe an opportunity to make this topic a 2 part series? 😅
@Darkk69695 ай бұрын
Probably due to cost in electricity and hardware. He might pick up another AMD motherboard to run as third node in the future. He's also thinking of what home lab users would do. For us home labs we tend to reuse what we can find. I use mostly old Enterprise hardware from work as it was going to be e-wasted anyway. Figure I give it a second lease on life. Plus I source old gear from e-bay.
@Angyrr5 ай бұрын
Been following your vids for a while and they just keep getting better. Finally have the confidence to press forward with my homelab thanks to you. Rock on brutha!
@christianlempa5 ай бұрын
Thank you so much for your support 👊 bro! Glad it helps you with your homelab 🫶
@johannesspace38795 ай бұрын
You should definitely set the shutdown_policy to "migrate". If you try to shutdown one Node, it will automagicly copy all VMs to to remaining Nodes based on your HA-group prioritys. I've never used the VM replication in my prod environment because it's running ceph, but maybe it would solve your Problem with the missing disk after shutdown.
@christianlempa5 ай бұрын
Thanks, that's a good tip!
@royborgen5 ай бұрын
Currently I am not running a cluster, but have plan for this in future. I was planing on failing services over, but I see that is going to take more than initially expected. At least I can do like you are doing now.
@fedefede8435 ай бұрын
Nice work. Proxmox is such a nice project. I came here attrscted by the 2 nodes tittle. I imagened the voting issue and the qdevice to help out. HA is really nice. As you said a 3rd fully cspable node allows you Ceph among other things. And that is another rabbit hole. Regards Christian!
@christianlempa5 ай бұрын
THank you! :D
@TheInfinitiGuy5 ай бұрын
Great video as always. To address your shared disk with 2 nodes issue you could use Stormagic SvSAN which takes local drives from each node and presents it as a iSCSI shared disk to the cluster. They also directly support Proxmox. Give it a try.
@ehink27165 ай бұрын
Do they have a free/community edition?
@danilfun5 ай бұрын
What are the advantages compared to CEPH?
@ehink27165 ай бұрын
@@danilfun I currently run CEPH on proxmox and my VM's are slow, I am using all ssd disk and think it maybe the 1gig network and how CEPH replicates the data. Reads are fine but writes are really slow get like 25meg writes.
@TheInfinitiGuy5 ай бұрын
@@danilfun I'm pretty sure you need 3 nodes to use ceph
@christianlempa5 ай бұрын
Thank you! Great tip :D
@djcmike5 ай бұрын
Got a cluster and am quite happy with it. I've changed hostnames on them as well, without much trouble, so it can be done.
@tomegb5 ай бұрын
You don't necessarily need a shared storage for HA. You can also replicate the VM disk on both nodes. Nevertheless, a very nice video for beginners!
@ewenchan12395 ай бұрын
You don't actually NEED a super fast storage for the CTs/VMs for migration. It can help when/if you are booting up/shutting them down regularly, but if they're running pretty much 24/7, once the CT/VM is booted up, it doesn't really need much (unless you are doing I/O intensive tasks). I have three N95 Mini PCs and run Ceph between them over GbE, and it works just fine. If the CT/VM disks are actually on the shared storage, I have live-migrated my CTs/VMs between the nodes in as little as 8 seconds (because it doesn't need to move the CT/VM disks around since it is already on shared storage).
@bumblingwelshman5 ай бұрын
I was running a 3 node cluster but have put them back to standalone nopw, after ~12months it ate through the alwayson nodes OS ssd to around 97% wearout, this was a cheap consumer SSD so would deff recommend either a enterprise ssd for the OS or a hdd and configure it as a mount point for the logs and quorum db to write to.
@mistakek5 ай бұрын
Yes, there are some quirks with a 2 node proxmox cluster. I run the same, but no qdevice. I just have a direct 10Gb connection between them. I did it for a similar reason as you, I wanted fast migration between the servers. Fun fact, I'm running PBS in HA with the virtual disk running on a 1Gb link to my Synology NAS, and the PBS datastore is on the Synology also. It works quite well considering it's going over 1Gb. I've backed and waiting on the Zima Cube Pro to arrive as that will become my 3rd Proxmox node running TrueNas VM configured for my HA storage with a 10Gb link and NVME storage available.
@stum9y8675 ай бұрын
Hi @ChristianLempa one note i made was when you used qdevice when running HA you need to ensure that the q device has root access which I had to do to get my cluster working but great video I use 1 dell 5090 & lenovo in my ha setup pm cluster & have a raspberry pi 4 (which also runs 24/7/365) as my q device but great content
@PhilMalle5 ай бұрын
Thanks for the video. I have a proxmox cluster running, but I need to reinstall proxmox on the cluster. There are a few things I didn’t take care at the first time. Hopefully with your video it will be better :)
@christianlempa5 ай бұрын
You're welcome! Hope it helps :)
@MarcBehar5 ай бұрын
I was just looking at this case, glad to see it in use
@christianlempa5 ай бұрын
Cool :D
@paul31515 ай бұрын
You can use the Replication Service. So e.g. every 5min the Disk ist mirrored
@EBlom6665 ай бұрын
Came here to say the same. But it requires ZFS on your Proxmox hosts.
@gilfreund5 ай бұрын
@@EBlom666 and the storage names should be the same, link the network bridges
@xandrios5 ай бұрын
@@gilfreund That applies to any storage type. The name of the storage that was saved in the VM config is what the hypervisor will be looking for to load the disk image from. That applies to local, shared or replicated storage.
@mistakek5 ай бұрын
Yes this works well for static type VM's where the data isn't changing very often.
@christianlempa5 ай бұрын
Don't have zfs 🤷♂️
@dmkanter5 ай бұрын
very fun! Thanks for the great video! have a beelink mini pc (intel) as primary, and an old 2012 MacBook Air (intel) that I recently put in a cluster. They are sharing storage for backups. Migration works great so far, even with the CPUs being different models. Looking forward to your SSD NAS storage in the next 1/2 of the year.
@christianlempa5 ай бұрын
Awesome! Thanks, and stay tuned for the storage server video :D
@mzaferyahsi5 ай бұрын
I am using the cloning to make sure that my vms/containers are migrated automatically if one of the nodes are down. That way, I don’t have to deal with the network storage which brings its own problems. Also you can change the votes in corosync config. That’s how I ran my cluster for a while where my main node had 2 votes and slave had 1 votes.
@shephusted27145 ай бұрын
really good content - take this to its ultimate conclusion is all i would say - think about 2 node 25 or 40g cluster - no switch needed - you could use the 56g dual port cards (40gbe) for cluster and then a 10g management network - the netfs is a good one to dig into - ceph/nfs/zfs/gluster? i think you are going to have to experiment - maybe try some nvme arrays? thanks for the content!
@ThatNateGuy5 ай бұрын
That's so cool! I enjoy seeing your setup grow. I'm considering building such a cluster myself. Given the date/time synchronization requirement, I wonder if it would be worth implementing PTP with something like a Time Card.
@christianlempa5 ай бұрын
Awesome!
@blinkitogaming5 ай бұрын
You should give CEPH a try. GO for a couple of sata SSDs, install each one on each node and configure it. You'll see the difference on HA.
@kevinneufeld31955 ай бұрын
How if you need 3 Nodes for Ceph ?
@blinkitogaming5 ай бұрын
As well as for HA
@jeanpierresaldana57945 ай бұрын
@@kevinneufeld3195 if it is for services that dont't need top performance (IOPS), setting ceph in VM's is more than enough. You can also have almost bare-metal performance is you passthrough the sdd's or nvme's instead of virtual disks.
@NianNordic5 ай бұрын
Haven't seen the video... Already "LIKED" it! You KNOW it's good stuff when mr. Lempa uploads! THX for the TOP QUALITY content, as always!! 👌💯
@christianlempa5 ай бұрын
Haha thanks :D
@Shirosak15 ай бұрын
I'm running a truenas cm with 4x4TB NVMe drives just for VM migration. Works very for VM migration and very quickly. If you can, it's definitely worthwhile to have a look
@cbaservs5 ай бұрын
so many good pointers Christian. thank you so much for this valuable information
@christianlempa5 ай бұрын
Thank you so much! :D
@fossdom55685 ай бұрын
Even I will be rebuilding my Proxmox with the hardware I recently got from work , Nutanix nodes G6 3.8TB RAM 60 Cores 120TB Storage Will be epic homelab
@zyghom5 ай бұрын
bloody hell: 3.8TB RAM....;-)
@Paul-bm8og5 ай бұрын
8:17 It is still possible to change the IP address of the server. You just have to be very careful because you have to change many different things, not just one file or one adapter!
@JohnDoe500475 ай бұрын
One more thing that will bite you is that your storage has to be the same on both machines. If a VM is on local-zfs on one node, you have to have a local-zfs on the second node in order to migrate.
@armoredstarfish9215 ай бұрын
so I run a two node cluster, one machine is a custom build that is used for things like media streaming / home lab and NAS (TrueNAS Scale VM with SSD's passed directly into it) and is only powered on when I need it (WOL), the second is on a Zimaboard that runs a Docker LXC for my 24-7 services and PiHole DNS LXC which is all working great. As I didn't need (or want!) HA services on Proxmox (I disabled them as they seem to wear SSD's out super fast for some reason?) and one of the nodes would be switched off most of the time I looked into getting a qdev but found out you don't need one if you set "two_node: 1" & "wait_for_all: 0" in the "quorum" section of "/etc/pve/corosync.conf". If one of the nodes is down the VMs will all boot like normal and can edit the VM configs, backups run, etc.
@MRPtech4 ай бұрын
My home lab is simple 3x N100 mini PCs in Proxmox HA config. Synology DS423+ (NFS) used as shared storage. This HA thing save me so many times when one node goes down. Even with my local 1Gbps network everything feels snappy.
@christianlempa4 ай бұрын
Wow, that is awesome to head! I didn't know if the 10G would be fast enough, :D Do you use an SSD on your NAS btw?
@dominick2535 ай бұрын
Two nodes plus a q device (pi 5) seems perfect for me. They can each backup to the other node. I tried ceph but my ssds were too slow. So i just have redundant services on each node. So a pihole lxc and a tailscale lxc on each one.
@rogertan11305 ай бұрын
hi, how can you test or tell if your ssd was too slow to support ceph?
@hugevibez5 ай бұрын
@@rogertan1130 you want IOPS, but also consumer SSDs typically slow down as the drive fills up which is not ideal for ceph (initially a nand cell operates in SLC mode, when the drive fills up it divides that cell in to smaller chunks) and due to the way write caching works write performance falls off a cliff as well. However, a lot of people misconfigure ceph as well. You can have a ceph cluster with HDDs that performs well enough as long as you have enough OSDs, but you also actually need the network speeds and latency to support this. 10gbit is often recommended, but I see it more of a minimum to get any decent sort of performance with ceph. Getting ceph on it's own network should help a lot with this as well.
@VoklavTube5 ай бұрын
ssd or network interface? a typical SSD has a speed of 3500MB/s 1 gigabit network has 1gbps = 1000 mbps = 125 mb/s 10 gigabit network has 10gbps = 10 000 Mbps = 1250 mb/s with is ~1/3 of the typical SSD speed...
@Glitch_8605 ай бұрын
Nice Video! How about a 5 NODE Proxmox cluster!!! Using an NAS for VM backups!
@christianlempa5 ай бұрын
That would be a little... crazy :D
@smolicek905 ай бұрын
You can try running DRBD Linstor on your cluster for online replicated storage (block devices). Im running few clusters this way ;)
@Darkk69695 ай бұрын
I've tried CEPH. So looking into using Linstor.
@Erllz5 ай бұрын
I am running a similair setup in my homelab. 2 nucs, 1 pi zero with ethernet hat as qdevice. Also configured HA. Ive setup ZFS on the nucs with replication. Therefore not requiring a shared Storage. The nucs are connected to 1gbps connection but thats fast enough for my lightweight vms and containers.
@BrunodeSouzaLino5 ай бұрын
Don't think I haven't noticed you installed the motherboard without the I/O shield plate despite your efforts to hide it.
@NiceDevil5 ай бұрын
Hey Chris, take a look at CEPH and maybe you can build a network over USB4 thunderbolt? ;) at least this is what I run on a 3 node cluster with NUCs 13ths gen. But even then: it takes around 2-3 min after a Node dies to run the HA migration. But not because of slow network 😂 getting around 20-30 gbit over the TB4 ports
@christianlempa5 ай бұрын
Sounds nice! Maybe i'll do ;)
@ChrisCebelenskiАй бұрын
(A bit late to the party but...) My experience is that I went to three nodes immediately since two nodes requires a bit of work to keep quorum, and now I'm at 11 nodes, including 5 pi 4b's to try some lightweight ARM images. Others have mentioned ceph as a storage fabric and yeah, I recommend that highly - I have three nodes dedicated to just a ceph cluster, and they operate in HA to keep my pihole running nicely. So 5 pi's, three lower power Xeon D's with 128GB RAM for ceph and HA, an MS-01 because, an older NUC as a low power Docker home, and a mega server with dual Xeon E's and some GPU's for AI playing and also because it's an I/O monster with 8 10GB ports and 16 2.5GB ports. Outside of that I have a proxmox backup server (Do this!) and some NAS boxes for NFS storage and local windows shares. You could run the backup server as a VM on the NAS too, which I do - it's not the best performances, but it runs pretty well.
@christianlempaАй бұрын
Wow that is a crazy setup!!! :D I’d love to build a 3 node cluster but I’m a bit worried about the power usage even with the Minisforum, but maybe that’s a good one for a future project :)
@ChrisCebelenskiАй бұрын
@@christianlempa the ceph cluster is three Xeon D servers and 11 SSD’s for about 30TB storage which of course is 1/3 usable due to three copies of data - total power consumption is 40W per or 120W total - three minisforum would be about 14W idle each with three NvmE drives each, or about half that based on my measurements here. Hardware costs would be similar too and performance better but maximum RAM about half too, which is why I went with the Xeons plus I wanted supermicro IPMI control.
@RalfP-v3s5 ай бұрын
try a vm based cluster for first steps with separate virtual netwerk segment. Works fine as a teaser.
@dbuko35 ай бұрын
You dont need shared storage or ceph for HA... It can be done like you have it now, but you need enabe VM replication for example to replicate vm every minute... Im not sure if you can do it only on ZFS for this because I have done it only on ZFS... Maybe also check HA groups because if you plan turning off one node periodicly you can make 2 ha groups and set in which host you preffer run VM for example grop run_on_pve1 and run_on_pve2 then you set in ha which vm use which group and select for pve1 group that it use pve1 host and pve2 group use pve2 host. Then when you want turn off or maintenance host pve2 you edit ha group run_on_pve2 and instead of selected pve2 host select pve1 and save. System will online migrate all VMs which run on pve2 host to pve1 host and you can turn off pve2 host when it finish... I think that this can be done also with api calls(edit ha group), check if vms are migrated and then turn off host on schedule(cronjob) on your zuma board... After host is turned off you can edit run_on_pve2 ha group and select thqt group use pve2 host and when host will be turned back VMs will be migrated back to pve 2 host...
@trungnguyen67085 ай бұрын
with 2 node+Qdevice, we can run HA using replicate function that buildin proxmox, set time to sync VM disk.
@pquodling4 ай бұрын
Doing similar at the moment - Just with Intel NUCs a pair of NUC6i7 with a smaller NUC as the third node, all using my Synology NAS for NFS Storage...
@christianlempa4 ай бұрын
Nice! Do you have any performance problems over network? And do you use 10G?
@sku20075 ай бұрын
to get live migration work more reliably this can help: pve8 has cpu types which wheren't available before. sth like x64_x86_v3 is for example intel skylake and newer and amd epyc (i assume zen1). just klick help in cpu menu of a VM and as others pointed out, with replication HA is possible. but loose data up to migration interval. otherwise do a bulk migration before shutdown?
@christianlempa5 ай бұрын
Thanks! Good tip with the cpu type
@asunder19805 ай бұрын
I use replication with HA and have different sync schedules depending on the VM importance. All of my hosts have storage pools with the same name and I’ve been able to fail over pretty effortlessly. The main issue I have with HA is when I do a switch update, I have do disable HA otherwise all of my HA hosts will shutdown when a total loss of connectivity is detected bring down my whole lab even tho I have fail over connections on a separate switch. Still trying to figure that out. lol.
@Excited-IT-Architect5 ай бұрын
Hi Christian, thanks a lot - another great video! 👍 - Would you please also share which NIC you installed and if you are satisfied with it (for Proxmox usage)? Thank you.
@casey10275 ай бұрын
I am running a 3 node cluster which shared NFS storage on a NAS
@serdalo50355 ай бұрын
You dont “need” a separate device for shared storage. You “could” use CephFS or GlusterFS to create a shared storage pool from the disks/partitions in you servers. Im using quotes because its possible, but a seperate device is probably still beter.
@posalab5 ай бұрын
If you use a 3 node with ceph/gluster or a network filesystem, the migration is happena almost instantly cause only ram e config file need to migrate from nodes.
@dukeseb5 ай бұрын
You don’t need shared storage, you can also setup replication to run ever 15 mins…or less if you want then you don’t have to worry about HA failing when you pull the plug
@zanewebb18534 ай бұрын
My first foray with proxmox has been less than fun, I migrated from esxi, first few days were great then my truenas vm started doing some weird stuff, like randomly rebooting, seriously considering fgoing back to esxi
@kirksteinklauber2605 ай бұрын
Just add dedicated HDDs to both Proxmox nodes just for VMs and then format those using ZFS. Then you can mount those drives as shared and have ZFS doing replication every XX minutes from node to the other. No need for external storage. Craft computing YT channel has a nice tutorial
@Darkk69695 ай бұрын
Yep, that is currently what I do for home and at work. Yes I could have used CEPH for work but I don't have time to troubleshoot cluster issues. ZFS is easier to deal with and fix.
@kirksteinklauber2605 ай бұрын
@@Darkk6969 I started with ZFS but I am planning to test at home Ceph and see if it worth to switch
@FreddieDK5 ай бұрын
To make HA work. You can use replication of the VM's if the storage-name of both nodes are the same.
@FrontLineNerd2 ай бұрын
Minimum of 3 nodes + ceph cluster with 3 OSD’s = Happy high availability Proxmox manager.
@VitePapa4 ай бұрын
I don't know why I feel Mr Lempa is Lex Luthor.
@bryanpedini5 ай бұрын
I use application high availability btw I mean, I have three pfSense virtual firewalls in HA (not the recommended scenario, they go with 2 but, meh, works) I have three VMs running mariadb galera in a cluster, HA database I'm learning kubernetes just for this reason (will have 3 master nodes and 6 worker nodes, 3 VMs for each of my proxmox hosts) I don't need a shared storage, LOL I also containerize everything so, kube it is
@RockTheCage555 ай бұрын
FYI I tried to do a qdevice inside of a docker container & it was a mess. I end up messing up my entire cluster. I got it added to the cluster but it was non-voting. While messing around with it i borked my entire cluster so i probably won't be doing that again.
@parrybedi-du5vf2 ай бұрын
Hi @Christian Lempa, would you mind sharing the model of Be Quite power supply you used in this build and confirm if you used 120mm fan on top of the CPU heating? Would greatly appreciate 😊
@tvojejbabkydedko4 ай бұрын
how did you manage to access the cluster domain directly? where you were able to choose on which node to log in?
@Glatze6035 ай бұрын
Using a Proxmox-Cluster with 3 Nodes and Ceph as a common Storage-Pool for real HA.
@chrisumali98415 ай бұрын
Thanks for the demo and info, have a great day
@christianlempa5 ай бұрын
Thanks for watching :)
@FrancescoCarucci5 ай бұрын
If you set the CPU type to QEMU64, live migration tends to work "most of the times". Not 100% though.
@fasti89935 ай бұрын
I don’t understand why you would want to go for a 2U case instead of a 3U case especially if you are planning to use an ATX PSU. That’s still gonna occupy 3U in your rack because you can’t put another server directly above as the PSU needs to suck in air from above. You could put a full height PCIe card in the 3U case without additional riser cables and you get proper front to back airflow…
@christianlempa5 ай бұрын
I wanted to have a little more space in the rack, and since Silverstone doesn't have a 3U case, I went with 2U instead of 4. But yeah it has some concerns about airflow that I didn't thought about in the first place.
@scubeedu25 ай бұрын
So I've been wanting to give this a try, but after reading some of the comments below regarding hardware requirements, I'm thinking it may not be worth the effort. For the average home-lab guy who has a windows SFF pc (NTFS file sharing / WSL2 for linux docker stuff), an HP micro-mini pc (Proxmox) and a raspberry pi4 (docker) all making up the environment, do you think this is something that is workable or possible by adding an additional Proxmox node running on a capable Dell laptop?
@declanmcardle5 ай бұрын
First things first: Do not create VMs or LXCs on node #2 _before_ it joins the cluster! 🙂
@Darkk69695 ай бұрын
Correct! It also states that in the cluster docs.
@christianlempa5 ай бұрын
True, just keep in mind prx-prod-2 is the first node in the cluster, due to historical reasons
@kapkanfps36943 ай бұрын
Dude you NEED HIGH AVAILABILITY Christian! 😂 maybe Next video tutorial?
@christianlempa3 ай бұрын
Not the next one, but I'm thinking about it :D
@VladyslavKudlai4 ай бұрын
Das ist ein gutes T-Shirt Mandalorian!
@christianlempa4 ай бұрын
Danke :D
@The-Weekend-Warrior5 ай бұрын
Errrm... venting for a power supply on THE TOP OF A RACKMOUNTED case, where the unit above will obviously obstruct the fan?? Hmmmm, I'm not sure this is well thought out.... not at all. Looks cool, but this should be a serious argument against a full size ATX power supply in there...
@christianlempa5 ай бұрын
Yeah, that's indeed a problem I haven't thought about :D I'll do some tests if it still works or if it gets too hot in the summer
@The-Weekend-Warrior5 ай бұрын
@@christianlempa No issues, it's always easier to play football from the viewing area than the field :D:D:D You can always count on the comment section to point out things :D Much love.
@Ekosusiloharjo5 ай бұрын
Hi Christ nice tutorial, but i have question how about the case is migrate and shut down the master after migrate it
@kareemschultz5 ай бұрын
Proxmox has glusterfs built in to solve the shared storage issue
@cruxwire3 ай бұрын
You need your own university called "Christian Lempa University".
@Labombab5 ай бұрын
Nice video's, is it just me, or do the latest video's have a small ms audio lagg? Could be wrong, but I always get that feeling when watching them.
@christianlempa5 ай бұрын
Maybe, I still have audio probs with my recording setup sometimes 🙈
@Yehok175 ай бұрын
Quick question: I have 2 hosts as well, I dont really want to get a 3rd either for HA to work better. Can a Raspberry Pi 5 per your video be used also as a Voting member and it would work a bit better spinning up the VMs on the other host with the Pi being up? The one I was gonna get is the 8GB ram and 128GB storage micro sd card. Thanks, just looking for general feedback on this idea.
@JirkaHarcarik5 ай бұрын
I tried two nodes proxmox cluster too a couple of months ago, but I ran into some weird unstable situation when one of the nodes goes off, I think the second node frees until the first goes online or something like that, so I noticed that is not a good idea.
@Toparlak1235 ай бұрын
@christianlempa are you still using the same Terraform provider "Telmate" that you used before in PVE 7?
@christianlempa5 ай бұрын
Yes
@HisLoveArmy3 ай бұрын
If you don't have shared storage do you still need a cluster to migrate to another node? Seems like a cluster should always have shared storage
@christianlempa3 ай бұрын
I think it makes a lot of sense, but it's not a requirement.
@im_not_marcel5 ай бұрын
@christianlempa can you add a 120mm fan on top of the heat sink? Is there enough room in the case?
@christianlempa5 ай бұрын
Yes, I just did that, but it's very little space, so I'm not sure how much it will make a difference. I have also added 2x 80mm fans at the front of the case and I believe that helps much more than the cpu fan...
@Olgerd965 ай бұрын
Please tell about SDN for whole cluster
@lennartjoswig62835 ай бұрын
why you don't use the replication feature from proxmox
@christianlempa5 ай бұрын
I don't have zfs
@GundamExia884 ай бұрын
So... if my two Proxmox versions are the same, but the kernel is different, might run into issues then?
@tunglamhp5 ай бұрын
It will going bigger i can ensure that more clusters. I am that hole too :(
@reneb52225 ай бұрын
One Tip do not run it on a SD Card because it writes alot of data for the Q DB. I blew up an expensive SD Card within 2 wks. You can also use a cheap OrangePi as long as it can run a linux derivate preferable Debian because Proxmox is Debian based.1 GB LAN Port works fine as well.
@christianlempa5 ай бұрын
Thanks for sharing!
@andydtoma5 ай бұрын
For the network aspect, I prefer configuring the bridge as a Ovs (open virtual switch) and then creating a separate vlan for the corosync link.
@solverz40785 ай бұрын
Linux bridge interfaces fully support VLANs, you don't need to use OVS for something so simple.
@christianlempa5 ай бұрын
No I don't use OVS
@VoklavTube5 ай бұрын
7:00 not sure which would be better... direct connection between the two nodes? Or bound interface from the two 10 gigabit ports. through switch. Quick question I can think of: If you decide to add a third node? What do you do with direct links? btw you should look at the new settings for v8 for vlans in the datacenter/network/
@John-777775 ай бұрын
Which network card did you choose?
@christianlempa5 ай бұрын
It's an Intel X520-DA2 chip
@zyghom5 ай бұрын
the dedicated network between 2 proxmox machines: why did you set it /16 instead i.e. /31 or /30 - there are only 2 IPs there, right?
@christianlempa5 ай бұрын
Good question, I've done it because in the future I might use a switch or another network instead of a direct link, but yea... it doesn't have to be that big :D
@zyghom5 ай бұрын
@@christianlempa your confirmation means 1 thing for me: I am getting better in these THINGIS ;-) - thank you ;-)
@christianlempa5 ай бұрын
@@zyghom awesome :D
@DuncanUnderwood15 ай бұрын
Which low profile dual SFP card have you found to work well with proxmox?
@christianlempa5 ай бұрын
I'm using an Intelx X520-Da2
@DuncanUnderwood15 ай бұрын
Kool. Thanks. Will check to see if they are available in my area.
@christianlempa5 ай бұрын
@@DuncanUnderwood1 check out ebay, or even amazon ;)
@DuncanUnderwood15 ай бұрын
@@christianlempa will do. Thank you
@ryanmalone26815 ай бұрын
I've been thinking about doing something similar but have been struggling with shared storage since I don't want to use the slow HDD on my NAS and don't want to build a SAN. I didn't catch what you decided to use for shared storage. Do you mind clarifying?
@xConundrumx5 ай бұрын
NAS with iSCSI or NFS?
@ryanmalone26815 ай бұрын
@@xConundrumx iSCSI seems a bit dated at this point and there is very little used gear available on ebay that isn't ancient. I'm trying to avoid using my NAS because I'm using Unraid and it's not really fast enough without the right RAID configuration for a target.
@solverz40785 ай бұрын
@@ryanmalone2681 Literally every SAN uses iSCSI, not dated at all.
@ClaytonMileto5 ай бұрын
recommend 3 nodes at minimum, though you can get away with 2 and a qdevice.... Even for a local cluster you need 3 nodes, or a QDevice running outside the nodes. 2-node clusters are only for home-labs and experiments... If one node in this cluster goes down, the other will be in R/O mode or will fence itself. Cluster must have quorum, in a two node cluster - quorum is 2. In 3 node its also 2, so either one node + vote survives, or both prod nodes (if vote is down).
@Cucaracha_5125 ай бұрын
You forgot to tell about very annoying problem: if even 1 node of a cluster is done, DO NOT REBOOT ANY OTHER!!! Rebooting a node that can't see full cluster will give you an error and no one VM on this node will be started until cluster is healthy
@TrungNguyen-ul9qoАй бұрын
Hi all, I want to purchase Asus NUC Intel for homelab, my concern is about to run the box 24/7. Is it stable and long lasting for ths Asus nuc to run all the time. Appreciate for all your feedback.
@christianlempaАй бұрын
Hm, that's a good question. So technically industry built devices are more robust and work better in 24/7 scenarios, but honestly, I'm running all my home servers based on Desktop PC components, and never got any issues with it. Even the SSDs are consumer quality. Maybe they don't last as long as industry quality devices, but if you take backups, if you replace your setup from time to time, I personally can't say anything "bad" about consumer products in a homelab.