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| ubuntu:bind:configure_bind9 [2020/12/09 14:04] – [Configuration Options] peter | ubuntu:bind:configure_bind9 [2020/12/09 16:06] (current) – peter |
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| BIND9 can be configured in many different ways, mostly: | BIND9 can be configured in many different ways, mostly: |
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| * **Caching nameserver:** BIND9 will find the answer to name queries and remember the answer when the domain is queried again. | * **[[Ubuntu:Bind:Configure Bind9:Caching Nameserver|Caching Nameserver]]:** BIND9 will find the answer to name queries and remember the answer when the domain is queried again. |
| * **Primary nameserver:** BIND9 reads the data for a zone from a file on its host and is authoritative for that zone. | * **[[Ubuntu:Bind:Configure Bind9:Primary Nameserver|Primary Nameserver]]:** BIND9 reads the data for a zone from a file on its host and is authoritative for that zone. |
| * **Secondary nameserver** BIND9 gets the zone data from another nameserver that is authoritative for the zone. | * **[[Ubuntu:Bind:Configure Bind9:Secondary Nameserver|Secondary Nameserver]]:** BIND9 gets the zone data from another nameserver that is authoritative for the zone. |
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| ---- | ---- |
| ===== Configuration Files ===== | ===== Configuration Files ===== |
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| The DNS configuration files are stored in /etc/bind. | The DNS configuration files are stored in **/etc/bind**. |
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| The primary configuration file is /etc/bind/named.conf, which in the layout provided by the package just includes these files. | The primary configuration file is **/etc/bind/named.conf**, which in the layout provided by the package just includes these files. |
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| * /etc/bind/named.conf.options: global DNS options. | * **/etc/bind/named.conf.options:** Global DNS options. |
| * /etc/bind/named.conf.local: for your zones. | * **/etc/bind/named.conf.local:** For your zones. |
| * /etc/bind/named.conf.default-zones: default zones such as localhost, its reverse, and the root hints. | * **/etc/bind/named.conf.default-zones:** Default zones such as localhost, its reverse, and the root hints. |
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| <WRAP info> | <WRAP info> |
| **NOTE:** The root nameservers used to be described in the file /etc/bind/db.root. | **NOTE:** The root nameservers used to be described in the file **/etc/bind/db.root**. |
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| This is now provided instead by the /usr/share/dns/root.hints file shipped with the dns-root-data package, and is referenced in the **named.conf.default-zones** configuration file mentioned above. | This is now provided instead by the **/usr/share/dns/root.hints** file shipped with the dns-root-data package, and is referenced in the **named.conf.default-zones** configuration file mentioned above. |
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| </WRAP> | </WRAP> |
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| It is possible to configure the same server to be a caching name server, primary, and secondary: it all depends on the zones it is serving. A server can be the Start of Authority (SOA) for one zone, while providing secondary service for another zone. All the while providing caching services for hosts on the local LAN. | <WRAP info> |
| | **NOTE:** BIND9 can be configured to be a caching name server, primary, and secondary at the same time: it all depends on the zones it is serving. |
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| | A server can be the **Start of Authority (SOA)** for one zone, while providing secondary service for another zone. |
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| | All the while providing caching services for hosts on the local LAN. |
| | </WRAP> |
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