TODO

live disk resize

• https://serverfault.com/questions/122042/kvm-online-disk-resize

• https://serverfault.com/questions/378086/how-to-extend-a-linux-pv-partition-online-after-virtual-disk-growth

seems to work

• https://eioki.eu/2013/07/02/live-resize-libvirt-disk-lvm-multipath

• http://www.unixarena.com/2015/12/linux-kvm-how-to-addresize-virtual-disk-on-fly.html

• apt-get install libguestfs-tools to get virt-resize

• https://forum.proxmox.com/threads/extend-rescan-virtio-disk-in-guest-vm.7989/

• debug io trouble: sysstat package + iosat -x 2 5 http://bencane.com/2012/08/06/troubleshooting-high-io-wait-in-linux/ do a page on debugging iostat and how to solve

misc

This is all that has no yet been done or documented.

• mailserver
• firewall
• monitoring diskspace
• disable saving .debs af download
• configure apt to remove .deb files after download /var/cache/apt/archives/
• network planning
• keyscript should try thrice

Space used on vanilla
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg1-root  1,9G  791M  954M   46% /
/dev/md0              243M   53M  162M   25% /boot

mail we will configure this system with a mail server this server will later be configured to forward its mails to another mail account

* write a ssection about spice and TLS, check this to set up the TLS certificates on kvm02 /etc/libvirt/qemu.conf

* btrfs read speed is low, make a kernel package from a recent kernel and test again. it may have been fixed already. this should be done on all glusterfs servers, but starting testing in on iotest01 before moving to glusterfs.

http://thomasmullaly.com/2014/11/16/the-list-of-os-variants-in-kvm/

take a look at this package : osinfo-db

read /usr/share/doc/apt/NEWS.Debian.gz --
Binary::apt-get::APT::Keep-Downloaded-Packages should be set to 'false'
APT::Keep-Downloaded-Packages to "false"