Change the Host Name of the configured Solaris server, IP (Solaris7, 10)

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Changing a Host Name or IP Address on the Solaris OS

Ross Moffatt, August 2007.

Contents

• Overview
• Option 1: Usingsys-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-unconfigCommand ". (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-unconfigResets 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.

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