We can use the fence_pve agent to fence/stonith peers in Pacemaker cluster running on VM’s in Proxmox PVE host(s). This works and has been tested on Ubuntu-14.04 with Pacemaker-1.1.12 from Hastexo PPA repository. Use: $ sudo add-apt-repository ppa:hastexo/ha to add…
For quite some time I’ve been using certificate issued by StartSSL CA for my personal website. It’s for free and the recent refresh of their web portal they had (finally) done looked and felt really good. The things were going…
[serialposts] OpenATTIC is an opensource converged storage that I think has a great potential to become a unified SDS for virtualization platforms. It offers features like CIFS, NFS, iSCSI and CEPH storage backends, mirrored volumes via DRBD and support for…
[serialposts] Setting up PostgreSQL synchronous or asynchronous replication cluster with Pacemaker is described in couple of resources like the official Pacemaker site PgSQL Replicated Cluster and the GitHub wiki of the OCF agent creator Resource Agent for PostgreSQL 9.1 streaming…
This should be pretty straightforward, adding: hotplug: 1 to the /etc/pve/qemu-server/VMID.conf file might work and that is for all types of devices ie network, disk, cpu etc. In case the hot-plugging still doesn’t work when device is being added from…
At the end, some testing of the High Availability fatures in PVE 4.2 on node and VM/LXC level. Instance Migration Migrating (moving) LXC and VM instances from one node to the other when the instance is stopped works without any…
This is probably the most complex part of the setup. It involves network configuration of the cluster in a way that the instances running on different nodes can still talk to each other. This is needed in order to provide…
PVE-4.2 has built in support for ZFS over iSCSI for several targets among which is Solaris COMSTAR. I built a ZFS VM appliance based on OmniOS (Solaris) and napp-it, see ZFS storage with OmniOS and iSCSI, and managed to create…
There is a 3 node CEPH cluster running on the office virtualization server that is external to PVE. The latest PVE though has built in support for CEPH using pveceph package so in case we have PVE cluster of 3…
We will use Multipath for link HA and improved performance. Install the needed packages first: root@proxmox01:~# apt-get install open-iscsi multipath-tools Then we discover the target and login: root@proxmox01:~# systemctl start open-iscsi.service root@proxmox01:~# iscsiadm -m discovery -t st -p 192.168.0.180 192.168.0.180:3260,1…