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Decide what you want to do: application-independent and more "general" network security done by iptables on the NFS server application-specific security done by nfsd on the NFS server or both. In NFS, you share a directory read-only to a specific client as follows: echo "/mynfs clt.xmpl.com(sync)" >> /etc/exports.d/my-ro.exports exportfs -r


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You are not suppose to mount the disk with any filesystem format; In Ubuntu, using gparted I specified the /dev/xvda2 to "Cleared" partition. and running the same command removes the above error.


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The answer is no, pygrub does not alter the dom0 grub, all credits goes to PryMar56 from #xen channel on freenode. As I understand correct then pygrub is tool that can extract the boot loader from given image and start that image, so there is no need to specify bootloader or kernel/ramdisk. The image must be of course prepared for this e.g. www.stacklet.com ...


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Solved this one, there was an errant POSTROUTING MASQUERADE rule in the iptables unrelated to the OpenVPN installation. I removed the rule with: iptables -t nat -D POSTROUTING 1 Where 1 is the rule number retrieved from service iptables status.


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Your question provides the answer - "no GUI installed". If there's no GUI installed (no X libraries), then there's no display for graphical programs to connect to.


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Did you have memory ballooning in place? If so, the "missing" memory should be the memory reclaimed by the balloon driver. Can you post the output cat /proc/meminfo on the machine with the "missing" memory? EDIT From your /proc/meminfo output, it seems that balloon is at work indeed. Have a look at "DirectMap4k" value: it reports that about 200 GB of RAM ...



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