10-07-2014
Node switched itself from static to DHCP on reboot issue
I'm trying to figure out what circumstances would cause an Open Solaris 11.2 host to switch itself from a static to a DHCP ip address upon reboot. This has only happened once but is a cause for some concern as this machine will be part of a web server pool.
Nothing has changed on the LAN that would potentially conflict with the static IP assigned. No adds/mods or changes to any switches and only one DHCP server in use. The OS is a default install with no kernel mods (i.e.: no dual boot. no vm etc). There is only one active I/F device on the machine (net1), Network Profile is Automatic, Location is Automatic and Network Profilers = None.
I am still learning this environment but my google searches and man page requests are not telling where I need to be focussing my attention. It would be very helpful if someone would tell me which log file is most likely to hold the clue and what I should be looking for.
Thank you in advance.
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LEARN ABOUT OSF1
namepool
namepool(4) Kernel Interfaces Manual namepool(4)
NAME
namepool - DHCP server database
DESCRIPTION
The namepool database provides joind with names that are available for dynamic assignment to clients of the DHCP protocol. For each DHCP
server and domain name (NIS or DNS), the database contains a collection of names available for allocation to DHCP clients within those
domains. One name plays a distinguished role - it is used as a prefix when the pool has been exhausted. Names are generated from the pre-
fix by appending a number, 1,2.., and a trailing 'd'. The namepool file is read whenever joind starts. Names within the database must not
be allocated to hosts which are not DHCP clients, and if the administration of a domain is shared between several DHCP servers, the name-
pools that each has must be disjoint. Names may be added and removed from the namepool file. If a name is removed from the file it remains
bound to the client to which it was allocated; if no such binding is in effect the name is excised from the server's pool the next time the
server starts. Once a name is dynamically bound to a host it will never be reused even if that host subsequently acquires a new name, but
there is no need to remove it from namepool.
FORMAT
Blank lines and lines beginning with a number sign (#) are ignored. A new entry must begin in column one and has one of the following for-
mats:
domain server
domain server name_prefix
The domain variable is the domain in which the names which follow are assigned.
The server variable is the name or IP address of the server in charge of allocating these names to clients.
The prefix variable is the prefix that will be used when the pool is exhausted.
Succeeding lines contain one or more names for domains that are to be allocated by the server. Each of these succeeding lines must begin
with at least one white space character.
FILES
/etc/join/namepool
RELATED INFORMATION
joind(8), join.ipaddresses(4) delim off
namepool(4)