gentoo-overlay/sys-cluster/ceph/files

1) We'd suggest you to install following packages

   sys-block/parted		to manage disk partions

   sys-fs/btrfs-progs	to use btrfs filesytem

   sys-fs/cryptsetup		to use encrypted devices with dm-crypt



2) To start several daemons of one specific type, create your own scripts

   cd /etc/init.d

   for dmn in mds.a mon.a osd.0 osd.1 osd.2; do

     ln -s ceph ceph-${dmn};

     rc-update add ceph-${dmn} default;

   done



3) If you spread ceph daemons over several different machines,

 We'd highly recommend you to start ntp-client to keep the system time sync.

 Try to choose one of following ntp client to install and add into runlevel.

   net-misc/ntp

   net-misc/openntpd

   net-misc/chrony



4) Starting from version 9.0.x, Ceph daemons run as user 'ceph' instead of 'root'.

   In order to solve this, we recommand to stop ceph daemons, and fix the ownership



    # chown -R ceph:ceph /var/lib/ceph



    or



    Add the following line to ceph.conf on all hosts:

    " setuser match path = /var/lib/ceph/$type/$cluster-$id "



    https://ceph.com/releases/v9-2-0-infernalis-released/