Wenn ihr eure #dev Umgebung (#proxmox / LB / Firewall / #coder / #nomad / #iscsi ..) von eurem Büro und eigener #Hardware in eine europäische "#cloud" Umgebung schieben wolltet, was würde ihr für einen #hoster nehmen ?
Ist es sowas wie #Hetzner , #ovh .. oder #stackit (die scheinbar nirgends Preise haben) etc. pp.
Eure Meinungen sind gefragt ! :-)
On today's episode of knit-picking #SystemD;
Obviously, we'd need all the #ZFS storage to be fully set-up, running, and /dev/zvol/ populated, 1st. Only then, can we start our #iSCSI target service.
How do YOU do it? (please reply, *splaining)
The first two options might get evaluated to the same result by the systemd "magic" - either option should make sure the storage is ready for services, right?
Hmm, unser selbstgebautes #ISCSI beherbergt unsere gesamte Test Umgebung, sprich Platten für die VMs unter #proxmox. Das muss dringend ersetzt werden, weil ich jedesmal die Luft anhalten muss, ob es nach Problem X (Strom / HW / Reboot) wieder hochkommt. Nach dem das Prod Ceph ausgetauscht wurde, konnte ich mein Test #Ceph endlich fertigstellen, aber die Ceph #Performance ist wirklich mies. Rados bench liegt im 3 stelligen Bereich für MB/s .
Как работать с сетевыми дисками для выделенных серверов
Привет, Хабр! На связи Владимир Иванов, системный администратор
Nächstes Wochenende spreche ich bei den Chemnitzer Linux-Tagen #clt2025 über das Backup-Programm #rsnapshot. Titel: Alles backupen mit Rsnapshot
Welche Fragen habt ihr? Welche Aspekte interessieren euch besonders? Gerne kann ich noch einzelne Punkte in den Talk einbauen.
https://chemnitzer.linux-tage.de/2025/de/programm/beitrag/337
Tipp: @clt_news hat für Samstag einen Track mit 3 Vorträgen zum Thema #Backup in Saal V1 geplant. Tim Oberschulte zeigt eine Lösung mit #iSCSI und @Kaffee_Junkie42 & @ascherbaum stellen @restic vor.
@dalias @eniko Personally, I'll sooner or later have to engange the whole #ARMv5 / #ARM11r7 / #RaspberryPi architecture anyway with OS/1337.
But I know a #readonly - OS isn't practical and where it is people already use #iPXE & #iSCSI for #diskless setups!
/boot on an SD card, and the rest could be on any USB mass storage device (i.e. SSD or even HDD)...That being said Raspberry Pi do have the key advantage of being by far the best in terms of #documentation.
Also most corp/org/edu networks only backup the $HOME directory and sometimes even allow syncing them across distros & keep them across version updates, so all the settings, addons and stuff remaib where they are: in said /home/ subfolders!
In fact most places with a sizeable #Linux-#Desktop landscape will just keep the /home/ directory on a redundant, #iSCSI-SAN and #netboot their #DisklessWorkstation|s via #iPXE, as this way burglars stealing devices most likely end up with a locked-down machine (anything but booting the preset network targets won't work without admin password!) that is a paperweight to them and espechally no data, which is crucial when it comes to #ITsec, #InfoSec, #OpSec & #ComSec.
Cuz it's way easier to secure 1-5 server rooms than thousands of publicly accessible machines on multiple campuses.
Bon, ça me rend fou.
Sur #proxmox lorsque j'ai une coupure du réseau (pour X ou Y raison), mes montages #iscsi passent en lecture seule.
OK, je veux bien, j'essaie de le remonter en lecture / ecriture donc
Je peux pas les umount / mount.
root@proxmox:/mnt/pve# umount /mnt/pve/ISCSI-5400
umount: /mnt/pve/ISCSI-5400: target is busy.
root@proxmox:/mnt/pve# mount -o remount,rw /mnt/pve/ISCSI-5400
mount: /mnt/pve/ISCSI-5400: cannot remount /dev/sdh1 read-write, is write-protected.
dmesg(1) may have more information after failed mount system call.My new #NixOS #NAS:
- An Intel server motherboard I bought in January of 2012
- A Celeron G530 I bought then too
- 16GB of RAM for $16 off Amazon
- 2 x 128GB SSD drive for the OS
- 2 x 2TB 3D NAND QLC drive for storage
- 2 x dual 2.5” SSDs in a 3.5” bay bracket
- a PCIe card with SATA 3 ports
- the small case & power supply I bought in 2012
- some cables
All that adds up to a mirrored #ZFS root pool and a mirrored ZFS pool for storage that I’ll export over #iSCSI to #Proxmox for my #HomeLab
Thinking about getting another NAS before tarrifs kick in.
Does #iSCSI work like I think it does? Treats anotjer Nas as a second hard drive over network?
@uastronomer it's something I.did implement in the past (abeit #KVM + #Proxmox, but the steps are similar enough):
You can seperate #Storage and #Compute given you have a Storage-LAN that is fast enough (and does at least 9k if not 64k Jumbo Frames) and have the "Compute Nodes" entirely #diskless (booting via #iPXE from the #SAN) and then mount the storage via #iSCSI or #Ceph.
Did a bigger project (easily 8-digits in hardware, as per MSRP) where a Employer/Client did #CloudExit amidst escalating costs and #ROI being within quarters (if not months at the predicted growth rate)...
@uastronomer now if you seperate the compute and storage layer with diskless compute nodes accessing the filesystem via #iSCSI or #Ceph, you can even do superfast updates by merely rebooting the jail/host...
Le numéro novembre-décembre de Linux Pratique (disponible en kiosque le 25 octobre) contient un article dont je suis l'auteur parlant de la mise en place d'un partage #iSCSI.
#editionsdiamond #linuxpratique #publication
When adding a #iscsi initiator that will access to a common LUN, always, I say ALWAYS make sure that you set a unique initiator ID before running it.
Another weird idea, i'd like to try:
adding a 3rd member to my #zfs mirror, but it's #iSCSI over fast ethernet over #powerline 
- put it in the cellar, 3 storeys down, see what happens.
I've got everything i'd need for a test setup - that little Wyse 3040 thin client has 1 USB3 port…
*record scratch, rewind*
I think #virtio NICs can be manually throttled to a fraction of "fast ethernet".
Hmm, virtualised, the test would exclude the weird old powerline bridges, though.
Back to Plan A, then!
@SweetAIBelle @OS1337
So instead of relying on some non-#reproduceable system images for cheap SBCs, why not make something like #OS1337 that is compact enough that one can easily build everything one wants for it to get at least started with something.
Sometimes one just needs to bood a system, check it's hardware and #ddrescue something off the internal harddrive because one doesn't have any other system that can run it...
