mirror of https://github.com/tLDP/LDP
56 lines
2.0 KiB
XML
56 lines
2.0 KiB
XML
<sect1 id="ch07-hosts">
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<title>Creating the /etc/hosts file</title>
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<?dbhtml filename="hosts.html" dir="chapter07"?>
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<para>If a network card is to be configured, you have to decide on the
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IP-address, FQDN and possible aliases for use in the /etc/hosts file. An
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example is:</para>
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<para><screen><my-IP> myhost.mydomain.org aliases</screen></para>
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<para>You should made sure that the IP-address is in the private network
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IP-address range. Valid ranges are:</para>
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<para><screen> Class Networks
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A 10.0.0.0
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B 172.16.0.0 through 172.31.0.0
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C 192.168.0.0 through 192.168.255.0</screen></para>
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<para>A valid IP address could be 192.168.1.1. A valid FQDN for this IP could
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be www.linuxfromscratch.org</para>
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<para>If you aren't going to use a network card, you still need to
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come up with a FQDN. This is necessary for programs like Sendmail to operate
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correctly (in fact; Sendmail won't run when it can't determine the FQDN).</para>
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<para>If a network card is not going to be configured, a new file
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<filename>/etc/hosts</filename> is created by running:</para>
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<para><screen><userinput>cat > /etc/hosts << "EOF"</userinput>
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# Begin /etc/hosts (no network card version)
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127.0.0.1 www.mydomain.com <value of HOSTNAME> localhost
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# End /etc/hosts (no network card version)
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<userinput>EOF</userinput></screen></para>
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<para>If a network card is to be configured, a new file
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<filename>/etc/hosts</filename> is created by running:</para>
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<para><screen><userinput>cat > /etc/hosts << "EOF"</userinput>
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# Begin /etc/hosts (network card version)
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127.0.0.1 localhost.localdomain localhost
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192.168.1.1 www.mydomain.org <value of HOSTNAME>
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# End /etc/hosts (network card version)
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<userinput>EOF</userinput></screen></para>
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<para>Of course, the 192.168.1.1 and www.mydomain.org have to be changed
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to your liking (or requirements if assigned an IP-address by a network/system
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administrator and this machine is planned to be connected to that
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network).</para>
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</sect1>
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