| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="ch-network-resolv">
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| 9 | <?dbhtml filename="resolv.html"?>
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| 10 |
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| 11 | <title>Creating the /etc/resolv.conf File</title>
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| 12 |
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| 13 | <indexterm zone="ch-network-resolv">
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| 14 | <primary sortas="e-/etc/resolv.conf">/etc/resolv.conf</primary>
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| 15 | </indexterm>
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| 16 |
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| 17 | <para>If the system is going to be connected to the Internet, it will
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| 18 | need some means of Domain Name Service (DNS) name resolution to
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| 19 | resolve Internet domain names to IP addresses, and vice versa. This is
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| 20 | best achieved by placing the IP address of the DNS server, available
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| 21 | from the ISP or network administrator, into
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| 22 | <filename>/etc/resolv.conf</filename>. If at least one of your network
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| 23 | interfaces is going to be configured by DHCP then you may not need to
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| 24 | create this file. By default DHCPCD will overwrite this file when it gets
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| 25 | a new lease from the DHCP server. If you wish to manually configure your
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| 26 | network interfaces or manually set your DNS using DHCP then create the
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| 27 | file by running the following:</para>
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| 28 |
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| 29 | <screen><userinput>cat > /etc/resolv.conf << "EOF"
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| 30 | <literal># Begin /etc/resolv.conf
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| 31 |
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| 32 | domain <replaceable>[Your Domain Name]</replaceable>
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| 33 | nameserver <replaceable>[IP address of your primary nameserver]</replaceable>
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| 34 | nameserver <replaceable>[IP address of your secondary nameserver]</replaceable>
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| 35 |
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| 36 | # End /etc/resolv.conf</literal>
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| 37 | EOF</userinput></screen>
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| 38 |
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| 39 | <para>The <replaceable>domain</replaceable> statement can be omitted or
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| 40 | replaced with a <replaceable>search</replaceable> statement. See the man
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| 41 | page for resolv.conf for more details.</para>
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| 42 |
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| 43 | <para>Replace <replaceable>[IP address of the nameserver]</replaceable>
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| 44 | with the IP address of the DNS most appropriate for the setup. There will
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| 45 | often be more than one entry (requirements demand secondary servers for
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| 46 | fallback capability). If you only need or want one DNS server, remove the
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| 47 | second <emphasis>nameserver</emphasis> line from the file. The IP address
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| 48 | may also be a router on the local network.</para>
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| 49 |
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| 50 | </sect1>
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