Red Hat ENTERPRISE LINUX WS 2.1 - Guia de Instalação descarregar pdf (Página 180)

180 Troubleshooting TopSpin

DONE

INDEX

e) Check the output of the command hostname -f

Is the output of this command:

a hostname.domainname? No problem, continue with step 9.

a plain hostname? You found the problem. Change the hostname as de-

scribed in chapter 10.3. Then continue with step 7h.

f) 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 step 9.

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

ter 10.5. Then continue with step 8h.

g) Check if the ethernet card for the laboratory network is configured as DHCP

(see chapter 10.4). If so check if the DHCP server is still active:

• open a Linux shell

•type in su - to become superuser

•type in ifconfig

you will get a description of the configurations of the ethernet cards.

Check the IP address of the PC, this is the number behind inet addr: , typ-

ically of eth0

• take the IP address and type in host <IP-address>

is the answer like this:

<IP-address>.in.addr.arpa. domain name pointer <PC-Name.domainname>

Yes? No problem, continue with step 9.

No? You found the problem. Contact your network administrator to check

1. It is also possible to use the graphical tool for checking / configuring the entry, see chapter10.5

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Red Hat ENTERPRISE LINUX WS 2.1 - Guia de Instalação Página 180