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e121c14405
This improves Samba AD DC performance as a DNS server dramatically, because NS records do not need to be looked up and there is less risk the response will have to fall back to TCP, doubling the cost again. Signed-off-by: Andrew Bartlett <abartlet@samba.org> Reviewed-by: Gary Lockyer <gary@catalyst.net.nz> Autobuild-User(master): Andrew Bartlett <abartlet@samba.org> Autobuild-Date(master): Fri Jun 21 00:52:19 UTC 2019 on sn-devel-184
50 lines
2.0 KiB
Plaintext
50 lines
2.0 KiB
Plaintext
# Additional information for DNS setup using BIND
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# You must make the following configuration changes to BIND to support
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# Samba's AD DC:
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#
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# Steps for BIND 9.8.x and 9.9.x -----------------------------------------
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#
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# 1. Insert following lines into the options {} section of your named.conf
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# file:
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tkey-gssapi-keytab "${DNS_KEYTAB_ABS}";
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minimal-responses yes;
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# 2. If SELinux is enabled, ensure that all files have the appropriate
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# SELinux file contexts. The ${DNS_KEYTAB} file must be accessible by the
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# BIND daemon and should have a SELinux type of named_conf_t. This can be
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# set with the following command:
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chcon -t named_conf_t ${DNS_KEYTAB_ABS}
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# Even if not using SELinux, do confirm (only) BIND can access this file as the
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# user it becomes (generally not root).
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#
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# Steps for BIND 9.x.x using BIND9_DLZ ------------------------------
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#
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# 3. Disable chroot support in BIND.
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# BIND is often configured to run in a chroot, but this is not
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# compatible with access to the dns/sam.ldb files that database
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# access and updates require. Additionally, the DLZ plugin is
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# linked to a large number of Samba shared libraries and loads
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# additonal plugins.
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#
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# Steps for BIND 9.x.x using BIND9_FLATFILE ------------------------------
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#
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# 3. Ensure the BIND zone file(s) that will be dynamically updated are in
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# a directory where the BIND daemon can write. When BIND performs
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# dynamic updates, it not only needs to update the zone file itself but
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# it must also create a journal (.jnl) file to track the dynamic updates
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# as they occur. Under Fedora 9, the /var/named directory can not be
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# written to by the "named" user. However, the directory /var/named/dynamic
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# directory does provide write access. Therefore the zone files were
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# placed under the /var/named/dynamic directory. The file directives in
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# both example zone statements at the beginning of this file were changed
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# by prepending the directory "dynamic/".
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