Host Name Change in Solaris

HOSTNAME CHANGE

Well, we changed all network details of our system, but still we need to change the HOSTNAME,

For changing hostname we need to alter following files…

/etc/hosts

/etc/nodename

/etc/hostname.<name of primary interface>

Rename crash directory under

/var/crash/<hostname>

#mv <old name> <new name>

Use dumpadm to configure save core directory

dumpadm –s <new directory path>

change the Hostname in 

root@sol-test-1:>/#vi /etc/hosts

"/etc/hosts" [Read only] 6 lines, 97 characters

#

# Internet host table

#

::1     localhost

127.0.0.1       localhost

192.168.234.133 machine1        loghost

root@sol-test-1:>/#vi /etc/nodename

machine1

root@sol-test-1:>/#vi /etc/hostname.e1000g0

"/etc/hostname.e1000g0" 1 line, 11 characters

machine1

Going to

root@sol-test-1:>/#cd /var/crash/

root@sol-test-1:>/var/crash#ls -l

total 2

drwx------   2 root     root         512 Apr 25 03:35 sol-test-1

Changing the old name to new one

root@sol-test-1:>/var/crash#mv sol-test-1 machine1

root@sol-test-1:>/var/crash#ls -l

total 2

drwx------   2 root     root         512 Apr 25 03:35 machine1

root@sol-test-1:>/var/crash#cd machine1/

root@sol-test-1:>/var/crash/machine1#pwd

/var/crash/machine1

 Now check what is our DUMP setting,

root@sol-test-1:>/#dumpadm

      Dump content: kernel pages

       Dump device: /dev/dsk/c1t0d0s1 (swap)

Savecore directory: /var/crash/sol-test-1

  Savecore enabled: yes

   Save compressed: on

Well... it is configured with old Hostname, which needs to change

Let's configure the Dump with New Hostname

root@sol-test-1:>/#dumpadm -s /var/crash/machine1

      Dump content: kernel pages

       Dump device: /dev/dsk/c1t0d0s1 (swap)

Savecore directory: /var/crash/machine1

  Savecore enabled: yes

   Save compressed: on

Again verify the configuration

root@sol-test-1:>/#dumpadm

      Dump content: kernel pages

       Dump device: /dev/dsk/c1t0d0s1 (swap)

Savecore directory: /var/crash/machine1

  Savecore enabled: yes

   Save compressed: on

OK… NOW ALL SET,

Rebooted and

root@machine1:>/#who -b

   .       system boot  Oct 10 22:05

root@machine1:>/#hostname

machine1

root@machine1:>/#dumpadm

      Dump content: kernel pages

       Dump device: /dev/dsk/c1t0d0s1 (swap)

Savecore directory: /var/crash/machine1

  Savecore enabled: yes

   Save compressed: on