Migrating Proxmox LVM-Thin Volumes to another Proxmox Host

Introduction In an earlier post, i've discribed how to migrate VMWare ESXi Virtual Machines (or mostly their disks) to a new Proxmox KVM machine. This time i had to move a Proxmox VM to another Proxmox host. Both hosts using LVM-Thin Logical Volumes to store guest data instead of disk…

Proxmox 4Gbit/s HA Networking with two Dual-Port NICs and VLAN-enabled Bonding to distinct Switches

Lately we've setup a new Proxmox 4.4 Server. For this we upgraded our former ESXi 5.5 Host with more RAM, a RAID-10 Array (from RAID-1 w. Hot-Spare) and two Dual-Port 1Gbit/s NICs (therefore 4x 1Gbit/s in 2 PCIe Cards with Intel I350 Chipset) from two Single-Port…

Run a NTP server for the pool.ntp.org project with Debian

Update 2: I've changed the 5 source servers to 3 other's that are on the same continent as our NTP Server so the offset and jitter are much better. This helped this server to be more "stable". The server now uses clock.isc.org, clock.uregina.ca and subitaneous.cpsc.…

User Story: Migrating Debian Squeeze from a Dell PowerEdge R310 to R320

...or how to get new hardware working on the old system by only using a linux live-cd, chroot and a new kernel. Introduction Some weeks ago, i had to change a complete Debian Squeeze System which ran on a Dell PowerEdge R310 to a newer R320 System with a new…

Hetzner Root-Server with Debian/KVM IPv4 and IPv6 Networking

Introduction Since the IPv4 address space is almost completely used up, the future protocol is IPv6 which has been around for lots of years already and it is highly recommended to at least enable it for your machines and use it in dual-stack mode - so your service or website…

Encrypted iRedmail Backups on Hetzner Backup-Space with SSHFS/EncFS

Introduction You may know that you get 100GB of free Backup-Space from Hetzner when ordering a Root- or Managed-Server. If you have other offers like Webspace or vServers you can also order the Backup-Space for a small fee. The nice thing about this Backup-Space is, that you don't have to…

Debian/Ubuntu 2TB+ GPT-HDD, RAID & encrypted LVM

Introduction Not just as a reminder for myself but for everyone having troubles setting up a crypted LVM on top of a Linux Software-RAID ON TOP of two or more 2TB+ Hard-Disks. The tricky part here is the hard disks which need to have a GPT Partition Table. Another issue…