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84 lines
2.0 KiB
XML
84 lines
2.0 KiB
XML
<sect1 id="ch09-hosts">
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<title>Creating the /etc/hosts file</title>
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<para>
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If you want to configure a network card, 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:
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</para>
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<blockquote><literallayout>
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<my-IP> myhost.mydomain.org aliases
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</literallayout></blockquote>
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<para>
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Make sure the IP-address is in the private network IP-address range.
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Valid ranges are:
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</para>
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<blockquote><literallayout>
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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
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</literallayout></blockquote>
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<para>
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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
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</para>
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<para>
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If you're not going to use a network card, you still need to come up with a
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FQDN. This is necessary for programs like Sendmail to operate correctly (in
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fact; Sendmail won't run when it can't determine the FQDN).
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</para>
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<para>
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If you don't configure a network card, create a new file
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<filename>/etc/hosts</filename> by running:
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</para>
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<literallayout>
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<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>
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</literallayout>
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<para>
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If you do configure a network card, create a new file
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<filename>/etc/hosts</filename> containing:
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</para>
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<literallayout>
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<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>
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</literallayout>
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<para>
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Of course, change the 192.168.1.1 and www.mydomain.org to your own
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liking (or requirements if you are assigned an IP-address by a network/system
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administrator and you plan on connecting this machine to that network).
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</para>
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</sect1>
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