Proxmox is unquestionably popular – but how do the Viennese manage to compete against virtualization heavyweights such as VMware, Microsoft and Red Hat? The regular and reliable updates – after all, the new Virtual Environment (VE) 7.0 appeared just two months after version 6.4 – are only part of the answer. Rather, the attractiveness of the package is to be sought in its flexibility.
Proxmox Virtual Environment, Proxmox VE for short, is a cluster and HA (high availability) platform for the simultaneous provision of kernel-based VMs via KVM / QEMU and containers via LXC. The entire administration – even entire clusters – takes place via a central web interface or the command line. The new version 7.0 offers all storage options that are also available under Debian GNU / Linux. LVM groups, ZFS pools or simple directories on any file system can be used locally, iSCSI targets or LUNs, CIFS / SMB or NFS shares, but also GlusterFS or Ceph can be used in the network. All virtual machines and containers can be created and used on local and network-based storage devices.
If the images of the virtual machines are in the network, virtual machines can be migrated live, i.e. with almost no downtime, within the cluster. A local migration also works live, local ZFS accelerates this even more. The internal DRDB storage plug-in was removed in version 7.0 because it is out of date – the manufacturer Linbit offers its own Linstor implementation directly. There are many small improvements in the storage area of the web GUI, such as the option to completely delete drives or ISO- und Appliance-Images directly via the admin workstation from a URL to the storage system.
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