Revision as of 23:30, 11 May 2019

Stage descriptions

BCCD goes through the following network configuration stages:

Live mode
1. Initial boot:
  1. Try to obtain an IP address from a BCCD DHCP server
  2. If no BCCD DHCP servers are available, obtain an IP address from any DHCP server
2. Head node: Upon user request, start DHCP server that will answer requests only from other BCCD systems
Liberated mode
1. Initial boot:
  1. Try to obtain an IP address from a BCCD DHCP server
  2. If no BCCD DHCP servers are available, obtain an IP address from any DHCP server
2. Diskless boot: Upon user request, start DHCP server that will answer requests from diskless BCCD systems on only a given interface

If you get an error like this:

RTNETLINK answers: File exists
Failed to bring up eth1.

Try flushing that interface and replumbing it:

$ sudo ip addr flush dev eth1

@@ Line 4: / Line 4: @@
 # Live mode
-## Initial boot: Obtain IP address from any available DHCP server
+## Initial boot:
+### Try to obtain an IP address from a BCCD DHCP server
+### If no BCCD DHCP servers are available, obtain an IP address from any DHCP server
 ## Head node: Upon user request, start DHCP server that will answer requests '''only''' from other BCCD systems
 # Liberated mode
-## Initial boot: Obtain IP address from any available DHCP server
+## Initial boot:
+### Try to obtain an IP address from a BCCD DHCP server
+### If no BCCD DHCP servers are available, obtain an IP address from any DHCP server
 ## Diskless boot: Upon user request, start DHCP server that will answer requests from diskless BCCD systems on '''only''' a given interface