20250514-notes

projects/proxmox/thomas-krenn-schlulung-part1/20250514.md

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+## Todo
+
+- [ ] Im forum anmelden 
+- [ ] research about initial toml file for proxmox for unattended confiuration of pve - 'proxmox autoinstaller'
+- [ ] test zraid1 on two ssd's at home with 'turtle' proxmox host
+
+## Introduction
+
+### basis
+
+- Debian stable + Ubuntu Kernel 
+- Virtualisierung mit KVM
+- LXC Container
+- zfs und ceph unterstuetzt
+
+### features
+
+- snapshots
+- kvm virt (windows, linux, bsd)
+- lxc container
+- HA clustering
+- live migration
+- flexible storage-wahlmoeglichkeiten
+- gui management
+- proxmox datacenter manager
+- proxmox backup server
+
+### Support Subscriptions
+
+#### basic 
+
+1cpu pro jahr/ 2cpu pro jahr
+- zugriff auf enterprise-repos
+- stable software updates
+- support ueber das kundenportal
+- drei support tickets
+- reaktionszeit: 1 werktag
+
+#### standard 
+
+1cpu pro jahr/ 2cpu pro jahr
+- alle basic leistungen
+
+**zusaetzlich**
+- 7 support tickets (total 10)
+- remote support (via ssh)
+- offline subscrition keyactivation
+
+#### premium 
+1cpu pro jahr/ 2cpu pro jahr
+
+- alle standard elistungen 
+
+**zusaetzlich**
+- unbegrentzt tickets
+
+## virtualisierungsstack 
+
+![stack](/files/proxmox/2025-05-14.png)
+
+## Ausbau-Varianten
+
+### single node
+
+- storage pool 
+	- raid controller with lvm - ceph and zfs dont support raid controller - if raid controller used change to mode and use zfs
+
+### Clustering ohne HA
+
+- several storage pools
+- pools not shared - individual
+
+### zfs cluster with asynchron replication
+
+- at least two pools
+- in between quorum device which replicates the config between the nodes
+
+### ceph cluster
+
+- at least 3 nodes
+- pool is combined and shared
+
+## Installation
+
+- its possible to provide custom toml files to install proxmox automatically
+- zfs raid1 for boot drive 
+- define correct hostname; not so easy to change later
+- modify update repos as first step!  and update/upgrade the system
+- hardware: always better to have as many interface ports as possible
+	- 2x 1 Gbit for mgmt 
+	- 2x 10 Gbit for VMs (redundant, bond via LACP- \{needs stacked switches\} or backup-mode)
+	- 2x 25 Gbit for Ceph storage clustering
+	- single node at least 4 ports and for clustering at least 6 ports
+- remove ip address of virtual bridge and set it directly on physical interface. Thus the VMs cant see the proxmox ip
+- bond ports for VMs (ideally tow 10 Gbit ports) and setp virtual bridge on bond0 so that it can be used by VMs ( set 'VLAN aware' at bridge)
+- its possible to create a bond for the web ui port
+
+
+## VM creation
+
+- id ranges can be configured in datacenter manager
+- set tags at creation
+- choosing guest os type properly as some features are directly set correctly; otherwise performance issues can arrise
+- qemu agent recommended to install. improves snapshots and other stuff
+- set at disk settings always: 'discard' and 'ssd emulation'. Otherwise ceph or other clustering solutions dont properly about changes on the disks
+- best practice is to use virtio for storage and for network as it is the fastest