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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/
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