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Inspired by the Xen Orchestra Team https://xen-orchestra.com/blog/migrate-from-xenserver-6-2-to-6-5/ I wanted to upgrade my hosts to the latest Alpha for testing, but I didn’t want to mess around with burning a DVD and boot off it. Now this solution is not necessary faster than booting off a local DVD depending on network speed and the NFS server, and also that the upgrade is running sequential host by host. However I could kick it off and leave it alone for some while and when I came back it was all done. NOTE: This is not a strict online Upgrade. If you have HA configured the upgrade will try to move the VMs around to the available hosts before upgrading and rebooting, if not several weird behavior will occur. What do you need: From http://xenserver.org/overview-xenserver-open-source-virtualization/prerelease.html The XenServer 6.6 Alpha3 ISO (or latest) XenCenter Windows Management Console (The latest version belonging to the Xenserver version to be […]

Situation: For whatsoever reason neither NFS nor SMB/CIFS are a runner on the environment. However I need to get permanent access to a shared filesystem. Solution: sshfs http://en.wikipedia.org/wiki/SSHFS It is more than likely that ssh is running and any kind of authentication is setup. Sshfs is an userspace filesystem (fuse) mounting a remote directory over ssh using sftp. In fuse  every user could mount his own filesystem through sshfs without the need of being root. In the below example I do it as root and share it with other users but it could be any other user. Note: This is a quick and dirty proof of concept. For further security needs please use this as a starting point and apply your own security needs (ssh keys, user auth, limited access, etc) With the below how-to I was able to make it fly under CentOS 6.x, Debian 7 and Ubuntu 13.04. […]