stoney cloud: Multi-Node Installation

Specialized Installation

Primary-Master-Node (vm-node-01)

If you configured a additional Backup Volume on the Storage Nodes, you want to mount them now in the VM-Node.

Log into the Primary-Master-Node and execute the node-configuration script as follows:

/usr/sbin/fc-node-configuration --node-type primary-master-node

Manual Steps

In order to be able to migrate a VM from one carrier to another, a special user called transfer will be created. This user is able to open connections to another carrier and fetch a VM's disk file (qcow2 image).

Install a transfer user.

lvcreate -L 60G -n transfer local0

mkfs.xfs -L "OSBD_transfe" /dev/local0/transfer 

cat << EOF >> /etc/fstab

LABEL=OSBD_transfe  /home/transfer    xfs      noatime,nodev,nosuid,noexec  0 2
EOF

mount /home/transfer

useradd --comment "User which is used for VM disk file transfer between carriers" \
        --create-home \
        --system \
        --user-group \
        transfer

passwd transfer

Adjust sshd config to allow password authentication:

$EDITOR /etc/ssh/sshd_config

ListenAddress <ADMIN-IP>
ListenAddress <DATA-IP>

# override default of no subsystems
Subsystem       sftp    internal-sftp

[...]

AllowUsers admin@192.168.16.254 vmmanager vm-transfer@10.16.97.*

Match User vm-transfer
    ChrootDirectory /var/virtualization
    ForceCommand internal-sftp
    AllowTcpForwarding no

To apply the changes above, restart the SSH daemon:

/etc/init.d/sshd restart