Red Hat ENTERPRISE LINUX WS 2.1 - Guia de Instalação descarregar pdf (Página 194)

c) Check the file /etc/hosts

- at least the following entries have to exist

for spectrometer control:

127.0.0.1 localhost.localdomain localhost

149.236.99.1 ASP_ST2

149.236.99.99 spect

If the ethernet card for the laboratory network is not configured as DHCP,

also the name of the own PC has to be listed

xyz.xyz.xyz.xyz name_of_own_pc.domain name_of_own_pc

Does this entry exists?

Yes? No problem, continue with the next step.

No? You found the problem. Add the name of the PC as described in chap-

ter 10.5. Then reboot the PC and check if the spectrometer now boots cor-

rectly.

d) Check if the hostname and IP address of the PC is correctly available in the

nameserver.

• open a Linux shell

•type in su - to become superuser

•type in hostname -fv

You will get an answer like this:

gethostname()=‘name_of_own_pc‘

Resolving ‘name_of_own_pc‘ ...

Result: h_name=‘name_of_own_pc.domain‘

Result: h_addr_list=149.236.13.65

‘name_of_own_pc.domain‘

• take the IP address listed at h_addr_list and type in the command:

host <IP-address>

is the answer like this:

<IP-address>.in.addr.arpa. domain name pointer <name_of_own_pc.domain>

The answer contains only one line and this line shows the same name

1. It is also possible to use the graphical tool for checking / configuring the entry, see chapter

10.5

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Red Hat ENTERPRISE LINUX WS 2.1 - Guia de Instalação Página 194