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Changing a Host Name or IP Address on the Solaris OS
Ross Moffatt, August 2007.
Contents
- Overview
- Option 1: Using
sys-unconfig
- Option 2: Editing Files
- About the Author
Overview
This tech tip shows how to change the host name or IP address of a system running the Solaris OS.
This information is sourced in part from Sun InfoDoc 21252, "How to Change the hostname and/or IP Address Without Runningsys-unconfig
Command ". (Editor's note: For more information, please see SunSolve; content is available to registered users with a Sun Service Plan .)
Option 1:Usingsys-unconfig
Usingsys-unconfig
Resets a number of files back to default, then shuts down the host. what isn't pointed out in the man page is that on reboot, you are asked configuration questions to populate the files. the questions are the same as when a new server is delivered, or when you load the operating system from scratch.
So on boot you will get something like this:
Select the language you want to use: <select your language>
Select a Locale,
Please make a choice (0 - 59), or press h or ? for help:
<select your location>
What type of terminal are you using?
Type the number of your choice and press Return:
<select your terminal type, I use a DEC VT100>
F2 continue, F2 continue
Network Connectivity
Networked [X] Yes
DHCP
Use DHCP [X] No
Primary Network Interface
Primary network interface [X] eri0
Host Name
IP Address <ipaddress>
Subnets
System part of a subnet [X] Yes
Netmask
<netmask>
IPv6
Enable IPv6 [X] No
Set a default Route
[X] Specify one
Default Route IP Address
Router IP Address: <defaultrouter>
Confirm Information
F2 continue
Configure Security Policy:
Configure Kerberos Security [X] No
Confirm Information
F2 continue
Name Service
Name service [X] DNS
Domain Name
<dnsdomain>
DNS Server Address
Servers IP Address: <nameserver1>
Servers IP Address: <nameserver2>
Servers IP Address:
DNS Search List
Search Domain: <dnsdomain>
Search Domain:
Search Domain:
Search Domain:
Search Domain:
Confirm Information
F2 continue
Time Zone
Regions [X] <select your region>
Time Zone
Time zones [X] <select your time zone>
Date and Time
> Accept the default date and time or enter new values.
Option 2: Editing Files
Host Name Change
Before Solaris 7, check/edit:
/etc/inet/hosts
/etc/nodename
/etc/hostname.<interface>
Where<interface>
Is the name of the primary interface, e.g. bge0.
/etc/net/ticlts/hosts
/etc/net/ticots/hosts
/etc/net/ticotsord/hosts
Then reboot the system.
Solaris 7 to 9, check/edit:
/etc/inet/hosts
/etc/nodename
/etc/hostname.<interface>
Where<interface>
Is the name of the primary interface, e.g. bge0.
/etc/net/ticlts/hosts
/etc/net/ticots/hosts
/etc/net/ticotsord/hosts
/etc/inet/ipnodes
Then reboot the system.
Solaris 10, check/edit:
/etc/inet/hosts
/etc/nodename
/etc/hostname.<interface>
Where<interface>
Is the name of the primary interface, e.g. bge0.
/etc/inet/ipnodes
Then reboot the system.
IP Address Change
Before Solaris 7, check/edit:
/etc/inet/hosts
/etc/hostname.<interfaces>
Where<interfaces>
Are the names of the interfaces, e.g. bge0, bge1, eri0.
/etc/net/ticlts/hosts
/etc/net/ticots/hosts
/etc/net/ticotsord/hosts
If you are moving to a new subnet, check/edit:
/etc/inet/netmasks
/etc/defaultrouter
/etc/resolv.conf
Then reboot the system.
Solaris 7 to 9, check/edit:
/etc/inet/hosts
/etc/hostname.<interfaces>
Where<interfaces>
Are the names of the interface, e.g. bge0, bge1, eri0.
/etc/net/ticlts/hosts
/etc/net/ticots/hosts
/etc/net/ticotsord/hosts
/etc/inet/ipnodes
If you are moving to a new subnet, check/edit:
/etc/inet/netmasks
/etc/defaultrouter
/etc/resolv.conf
Then reboot the system.
Solaris 10, check/edit:
/etc/inet/hosts
/etc/hostname.<interfaces>
Where<interfaces>
Are the names of the interface, e.g. bge0, bge1, eri0.
/etc/inet/ipnodes
If you are moving to a new subnet, check/edit:
/etc/inet/netmasks
/etc/defaultrouter
/etc/resolv.conf
Then reboot the system.
About the Author
Ross Moffatt has been a UNIX System Administrator for more than 10 years and can be contacted at ross. stuff [at] telstra.com.
Unless otherwise licensed, code in all technical manuals herein (including articles, FAQs, samples) is provided under this License.