gnt-dal: disk, network setup (team#40971)

howto/ganeti.md

@@ -2664,6 +2664,23 @@ the SSH `known_hosts` file, see [SSH key verification failures](#ssh-key-verific
 This procedure replaces the `gnt-node add` step in the initial setup
 of the first Ganeti node when the `gnt-chi` cluster was setup:
 
+First, we need to partition the disks. Normally, this would have been
+done in the `setup-storage` configuration, but we were in a rush:
+
+    mdadm --create --verbose --level=10 --metadata=1.2 --raid-devices=6 /dev/md2 /dev/sd[abcdef] &&
+    cryptsetup luksFormat --key-file=/etc/luks/crypt_dev_md2 /dev/md2 &&
+    cryptsetup luksOpen --key-file=/etc/luks/crypt_dev_md2 /dev/md2 crypt_dev_md2 &&
+    pvcreate /dev/mapper/crypt_dev_md2 &&
+    vgcreate vg_ganeti /dev/mapper/crypt_dev_md2 &&
+    echo crypt_dev_md2 UUID=$(lsblk -n -o UUID /dev/md2 | head -1) /etc/luks/crypt_dev_md2 luks,discard >> /etc/crypttab &&
+    update-initramfs -u
+
+Reboot to test the LUKS configuration:
+
+    reboot
+
+Initialize the ganeti cluster:
+
     gnt-cluster init \
         --master-netdev eth1 \
         --nic-parameters link=br0 \
@@ -2717,7 +2734,7 @@ The [network configuration](#network-configuration) (below) must also be perform
 address blocks reserved in the cluster. This is the actual initial
 configuration performed:
 
-    gnt-network add --network 204.8.99.128/25 --gateway 204.8.99.254 --network6 2620:7:6002::/64 --gateway6 2620:7:6002:1 gnt-dal-01
+    gnt-network add --network 204.8.99.128/25 --gateway 204.8.99.254 --network6 2620:7:6002::/64 --gateway6 2620:7:6002::1 gnt-dal-01
     gnt-network connect --nic-parameters=link=br0 gnt-dal-01 default
 
 Note that we reserve the first `/25` (209.44.8.99.0/25) for future
@@ -2725,12 +2742,9 @@ use. The above only uses the second half of the network in case we
 need the rest of the network for other operations. A new network will
 need to be added if we run out of IPs in the second half. This also 
 
-The following IPs were reserved:
-
-    gnt-network modify --add-reserved-ips=204.8.99.254 gnt-dal-01
-
-This is just for the gateway. The node's public addresses are in the
-other /25 and do not need to be reserved in this allocation.
+No IP was reserved as the gateway is already automatically reserved by
+Ganeti. The node's public addresses are in the other /25 and also do
+not need to be reserved in this allocation.
 
 ### Network configuration