availability

I've started reading about ceph and have a question. We have a 6 nodes cluster with 2 servers with the same specs like so: A-A B-B C-C I understand that ceph need 3 nodes but would it be possible to use it in our setup so that A-A , for example are replicated together ? That would look like...

Hello, i've added these settings to CT config: lxc.cgroup.devices.allow: c 10:200 rwm lxc.hook.autodev: sh -c "modprobe tun; cd ${LXC_ROOTFS_MOUNT}/dev; mkdir net; mknod net/tun c 10 200; chmod 0666 net/tun" now when i do pct shutdown <ctid>; pct start <ctid> then tun driver (and openvpn)...