1KRB5KDC(8) System Manager's Manual KRB5KDC(8)
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6 krb5kdc - Kerberos V5 KDC
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9 krb5kdc [ -x db_args ] [ -d dbname ] [ -k keytype ] [ -M mkeyname ] [
10 -p portnum ] [ -m ] [ -r realm ] [ -n ] [ -P pid_file ]
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13 krb5kdc is the Kerberos version 5 Authentication Service and Key Dis‐
14 tribution Center (AS/KDC).
15 The -x db_args option specifies the database specific arguments.
17 Options supported for LDAP database are:
19 -x nconns=<number_of_connections>
21 specifies the number of connections to be maintained per LDAP
22 server.
23 -x host=<ldapuri>
25 specifies the LDAP server to connect to by a LDAP URI.
26 -x binddn=<binddn>
28 specifies the DN of the object used by the KDC server to bind
29 to the LDAP server. This object should have the rights to read
30 the realm container, principal container and the subtree that
31 is referenced by the realm.
32 -x bindpwd=<bind_password>
34 specifies the password for the above mentioned binddn. It is
35 recommended not to use this option. Instead, the password can
36 be stashed using the stashsrvpw command of kdb5_ldap_util.
37 The -r realm option specifies the realm for which the server should
39 provide service; by default the realm returned by
40 krb5_default_local_realm(3) is used.
41 The -d dbname option specifies the name under which the principal data‐
43 base can be found; by default the database is in DEFAULT_DBM_FILE.
44 This option does not apply to the LDAP database.
45 The -k keytype option specifies the key type of the master key to be
47 entered manually as a password when -m is given; the default is
48 "des-cbc-crc".
49 The -M mkeyname option specifies the principal name for the master key
51 in the database; the default is KRB5_KDB_M_NAME (usually "K/M" in the
52 KDC's realm).
53 The -p portnum option specifies the default UDP port number which the
55 KDC should listen on for Kerberos version 5 requests. This value is
56 used when no port is specified in the KDC profile and when no port is
57 specified in the Kerberos configuration file. If no value is avail‐
58 able, then the value in /etc/services for service "kerberos" is used.
59 The -m option specifies that the master database password should be
61 fetched from the keyboard rather than from a file on disk.
62 The -n option specifies that the KDC does not put itself in the back‐
64 ground and does not disassociate itself from the terminal. In normal
65 operation, you should always allow the KDC to place itself in the back‐
66 ground.
67 The -P pid_file option tells the KDC to write its PID (followed by a
69 newline) into pid_file after it starts up. This can be used to iden‐
70 tify whether the KDC is still running and to allow init scripts to stop
71 the correct process.
72 The KDC may service requests for multiple realms (maximum 32 realms).
74 The realms are listed on the command line. Per-realm options that can
75 be specified on the command line pertain for each realm that follows it
76 and are superceded by subsequent definitions of the same option. For
77 example,
78 krb5kdc -p 2001 -r REALM1 -p 2002 -r REALM2 -r REALM3
80 specifies that the KDC listen on port 2001 for REALM1 and on port 2002
82 for REALM2 and REALM3. Additionally, per-realm parameters may be spec‐
83 ified in the kdc.conf file. The location of this file may be specified
84 by the KRB5_KDC_PROFILE environment variable. Parameters specified in
85 this file take precedence over options specified on the command line.
86 See the kdc.conf(5) description for further details.
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89 krb5(3), kdb5_util(8), kdc.conf(5), kdb5_ldap_util(8)
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92 It should fork and go into the background when it finishes reading the
93 master password from the terminal.
94 KRB5KDC(8)