1.K5LOGIN(5) File Formats Manual .K5LOGIN(5)
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6 .k5identity - Kerberos V5 client principal selection rules
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9 The .k5identity file, which resides in a user's home directory, con‐
10 tains a list of rules for selecting a client principals based on the
11 server being accessed. These rules are used to choose a credential
12 cache within the cache collection when possible.
13 Blank lines and lines beginning with '#' are ignored. Each line has
15 the form:
16 principal field=value ...
18 If the server principal meets all of the field constraints, then prin‐
20 cipal is chosen as the client principal. The following fields are rec‐
21 ognized:
22 realm If the realm of the server principal is known, it is matched
24 against value, which may be a pattern using shell wildcards.
25 For host-based server principals, the realm will generally only
26 be known if there is a domain_realm section in krb5.conf with a
27 mapping for the hostname.
28 service
30 If the server principal is a host-based principal, its service
31 component is matched against value, which may be a pattern using
32 shell wildcards.
33 host If the server principal is a host-based principal, its hostname
35 component is converted to lower case and matched against value,
36 which may be a pattern using shell wildcards.
37 If the server principal matches the constraints of multiple lines in
39 the .k5identity file, the principal from the first matching line is
40 used. If no line matches, credentials will be selected some other way,
41 such as the realm heuristic or the current primary cache.
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44 The following example .k5identity file selects the client principal
45 alice@KRBTEST.COM if the server principal is within that realm, the
46 principal alice/root@EXAMPLE.COM if the server host is within a servers
47 subdomain, and the principal alice/mail@EXAMPLE.COM when accessing the
48 IMAP service on mail.example.com.
49 alice@KRBTEST.COM realm=KRBTEST.COM
51 alice/root@EXAMPLE.COM host=*.servers.example.com
52 alice/mail@EXAMPLE.COM host=mail.example.com service=imap
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55 kerberos(1), krb5.conf(5)
56 .K5LOGIN(5)