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Diffstat (limited to 'docs-xml/Samba3-HOWTO')
| -rw-r--r-- | docs-xml/Samba3-HOWTO/TOSHARG-TDBFiles.xml | 152 | ||||
| -rw-r--r-- | docs-xml/Samba3-HOWTO/index.xml | 2 |
2 files changed, 154 insertions, 0 deletions
diff --git a/docs-xml/Samba3-HOWTO/TOSHARG-TDBFiles.xml b/docs-xml/Samba3-HOWTO/TOSHARG-TDBFiles.xml new file mode 100644 index 0000000000..2c9cefcfda --- /dev/null +++ b/docs-xml/Samba3-HOWTO/TOSHARG-TDBFiles.xml @@ -0,0 +1,152 @@ +<?xml version="1.0" encoding="iso-8859-1"?> +<!DOCTYPE chapter PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc"> +<chapter id="msdfs"> + +<chapterinfo> + &author.jht; + + <pubdate>21 May 2008</pubdate> +</chapterinfo> + +<title>Managing TDB Files</title> + +<sect1> +<title>Features and Benefits</title> + + <para> +<indexterm><primary>tdb</primary></indexterm> +<indexterm><primary>Trivial Database</primary></indexterm> + Samba uses a lightweight database called Trivial Database (tdb) in which it stores persistent and transient data. + Some tdb files can be disposed of before restarting Samba, but others are used to store information that is vital + to Samba configuration and behavior. The following information is provided to help administrators who are seeking + to better manage their Samba installations. + </para> + + <para> +<indexterm><primary>tdb</primary></indexterm> +<indexterm><primary>currupted</primary></indexterm> +<indexterm><primary>backup</primary></indexterm> +<indexterm><primary>restore</primary></indexterm> + Those who package Samba for commercial distribution with operating systems and appliances would do well to take + note that tdb files can get corrupted, and for this reason ought to be backed up regularly. An appropriate time + is at system shutdown (backup) and startup (restore from backup). + </para> + +<table frame="all" id="TOSH-TDB"> + <title>Samba's Trivial Database Files</title> + <tgroup align="center" cols="2"> + <thead> + <row><entry>File name</entry><entry>Preserve</entry><entry>Description</entry></row> + </thead> + + <tbody> + <row><entry>account_policy.tdb</entry><entry>Y</entry> + <entry><para>NT account policy settings such as pw expiration, etc...</para></entry></row> + <row><entry>brlock.tdb</entry><entry>N</entry> + <entry><para>Byte range locks.</para></entry></row> + <row><entry>browse.dat</entry><entry>N</entry> + <entry><para>Browse lists - gets rebuilt automatically.</para></entry></row> + <row><entry>connections.tdb</entry><entry>N</entry> + <entry><para>Share connections. Used to enforce max connections, etc.</para></entry></row> + <row><entry>gencache.tdb</entry><entry>N</entry> + <entry><para>Generic caching database.</para></entry></row> + <row><entry>group_mapping.tdb</entry><entry>Y</entry> + <entry><para>Stores group mapping information. Not used when using LDAP backend.</para></entry></row> + <row><entry> lang_en.tdb</entry><entry>Y</entry> + <entry><para>Stores language encoding information.</para></entry></row> + <row><entry>locking.tdb</entry><entry>N</entry> + <entry><para>Stores share mode and oplock information.</para></entry></row> + <row><entry>login_cache.tdb</entry><entry>N</entry> + <entry><para>Keeps a log of bad pw attempts.</para></entry></row> + <row><entry>messages.tdb</entry><entry>N</entry> + <entry><para>Used to keep track of Samba internal messaging.</para></entry></row> + <row><entry>netsamlogon_cache.tdb</entry><entry>Y</entry> + <entry><para> + Cache of user net_info_3 struct from <emphasis>net_samlogon()</emphasis> + requests from domain member machines. + </para></entry></row> + <row><entry>ntdrivers.tdb</entry><entry>Y</entry> + <entry><para>Stores installed printer driver information.</para></entry></row> + <row><entry>ntforms.tdb</entry><entry>Y</entry> + <entry><para>Stores installed printer forms information.</para></entry></row> + <row><entry>ntprinters.tdb</entry><entry>Y</entry> + <entry><para>Stores installed printers information.</para></entry></row> + <row><entry>printing directory</entry><entry>Y</entry> + <entry><para>Directory containing tdb per print queue of cached lpq output.</para></entry></row> + <row><entry>registry.tdb</entry><entry>Y</entry> + <entry><para>Windows registry skeleton (connect via regedit.exe).</para></entry></row> + <row><entry>sessionid.tdb</entry><entry>N</entry> + <entry><para>Session information to support <literal>utmp = yes</literal> capabilities.</para></entry></row> + <row><entry>share_info.tdb</entry><entry>Y</entry> + <entry><para>Stores share-level ACL configuration settings. + Default ACL is <emphasis>Everyone - Full Control</emphasis>. + </para></entry></row> + <row><entry>unexpected.tdb</entry><entry>N</entry> + <entry><para> + Unexpected packet queue needed to support windows clients that respond on a + different port that the originating reques. + </para></entry></row> + <row><entry>winbindd_cache.tdb</entry><entry>N</entry> + <entry><para>Winbind's cache of user lists.</para></entry></row> + <row><entry>winbindd_idmap.tdb</entry><entry>Y</entry> + <entry><para>Winbind's local IDMAP database.</para></entry></row> + <row><entry>wins.dat</entry><entry>N</entry> + <entry><para> + WINS database iused only when <parameter>wins support = yes</parameter> + has been set. This gets rebuilt or updated at every restart. + </para></entry></row> + <row><entry>wins.tdb</entry><entry>Y</entry> + <entry><para> + The working permanent storage for all WINS data. This database is used only + when <parameter>wins support = yes</parameter> has been set in the &smb.conf; file. + Note: This retains all manually configured WINS entries. Manual setting can be done use the net utility. + </para></entry></row> + <row><entry>secrets.tdb</entry><entry>Y</entry> + <entry><para> + This tdb file stores internal settings such as the machine and the domain SID, secret passwords + that are used with LDAP, the machine secret token, etc. This is an essential file that is stored + in a secure area. Vendors locate this in various folders. Check <command>smbd -b</command> to + find its location on your system. + </para></entry></row> + <row><entry>schannel_store.tdb</entry><entry>Y</entry> + <entry><para> + This stores secure channel access token information used with SMB signing. + </para></entry></row> + <row><entry>passdb.tdb</entry><entry>Y</entry> + <entry><para> + This stores the Samba SAM account information when using a tdbsam password backend. + </para></entry></row> + </tbody> + </tgroup> + </table> + +</sect1> + +<sect1> +<title>Managing TDB Files</title> + + <para> + The <command>tdbbackup</command> utility is a tool that may be used to backup samba tdb files. + This tool may also be used to verify the integrity of the tdb files prior to Samba startup or + during normal operation. If it finds file damage it will search for a prior backup the backup + file from which the damaged tdb file will be restored. The <command>tdbbackup</command> + utility can safely be run at any time. It was designed so that it can be used at any time to + validate the integrity of tdb files, even during Samba operation. + </para> + + <para> + It is recommended to backup all tdb files as part of the Samba start-up scripts on a Samba + server. The following command syntax can be used: + </para> +<screen> +myserver# > cd /var/lib/samba +myserver@ > tdbbackup *.tdb +</screen> + <para> + The default extension is <filename>.bak</filename>. Any alternate extension can be specified + by executing <literal>tdbbackup -s 'new_extension' *.tdb</literal> as part of your startup script. + </para> + +</sect1> + +</chapter> diff --git a/docs-xml/Samba3-HOWTO/index.xml b/docs-xml/Samba3-HOWTO/index.xml index 1253b0352e..87b07951c7 100644 --- a/docs-xml/Samba3-HOWTO/index.xml +++ b/docs-xml/Samba3-HOWTO/index.xml @@ -193,6 +193,8 @@ The chapters in this part each cover specific Samba features. <?latex \cleardoublepage ?> <xi:include href="TOSHARG-Bugs.xml"/> <?latex \cleardoublepage ?> + <xi:include href="TOSHARG-TDBFiles.xml"/> + <?latex \cleardoublepage ?> </part> |