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.\" A man page for ipa-join
.\" Copyright (C) 2009 Red Hat, Inc.
.\"
.\" This is free software; you can redistribute it and/or modify it under
.\" the terms of the GNU Library General Public License as published by
.\" the Free Software Foundation; version 2 only
.\"
.\" This program is distributed in the hope that it will be useful, but
.\" WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
.\" General Public License for more details.
.\"
.\" You should have received a copy of the GNU Library General Public
.\" License along with this program; if not, write to the Free Software
.\" Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
.\"
.\" Author: Rob Crittenden <rcritten@redhat.com>
.\"
.TH "ipa-join" "1" "Oct 8 2009" "freeipa" ""
.SH "NAME"
ipa\-join \- Join a machine to an IPA realm and get a keytab for the host service principal
.SH "SYNOPSIS"
ipa\-join [ \fB\-h\fR hostname ] [ \fB\-k\fR keytab\-file ] [ \fB\-s\fR server ] [ \fB\-w\fR bulk\-bind\-password ] [\fB\-u\fR] [ \fB\-d\fR ] [ \fB\-q\fR ]
.SH "DESCRIPTION"
Joins a host to an IPA realm and retrieves a kerberos \fIkeytab\fR for the host service principal, or unenrolls an enrolled host from an IPA server.
Kerberos keytabs are used for services (like sshd) to perform kerberos authentication. A keytab is a file with one or more secrets (or keys) for a kerberos principal.
The ipa\-join command will create and retrieve a service principal for host/foo.example.com@EXAMPLE.COM and place it by default into /etc/krb5.keytab. The location can be overridden with the \-k option.
The IPA server to contact is set in /etc/ipa/default.conf by default and can be overridden using the \-s,\-\-server option.
In order to join the machine needs to be authenticated. This can happen in one of two ways:
* Authenticate using the current kerberos principal
* Provide a password to authenticate with
If a client host has already been joined to the IPA realm the ipa\-join command will fail. The host will need to be removed from the server using `ipa host\-del FQDN` in order to join the client to the realm.
This command is normally executed by the ipa\-client\-install command as part of the enrollment process.
The reverse is unenrollment. Unenrolling a host removes the Kerberos key on the IPA server. This prepares the host to be re\-enrolled. This uses the host principal stored in /etc/krb5.conf to authenticate to the IPA server to perform the unenrollment.
.SH "OPTIONS"
.TP
\fB\-h,\-\-hostname hostname\fR
The hostname of this server (FQDN). By default of nodename from uname(2) is used.
.TP
\fB\-s,\-\-server server\fR
The hostname of this server (FQDN). By default of nodename from uname(2) is used.
.TP
\fB\-k,\-\-keytab keytab\-file\fR
The keytab file where to append the new key (will be created if it does not exist). Default: /etc/krb5.keytab
.TP
\fB\-w,\-\-bindpw password\fR
The password to use if not using kerberos to authenticate
.TP
\fB\-u,\-\-unenroll\fR
Unenroll this host from the IPA server
.TP
\fB\-q,\-\-quiet\fR
Quiet mode. Only errors are displayed.
.TP
\fB\-d,\-\-debug\fR
Debug mode.
.SH "EXAMPLES"
Join IPA domain and retrieve a keytab with kerberos credentials.
# kinit admin
# ipa\-join
Join IPA domain and retrieve a keytab using a one\-time password.
# ipa\-join \-w secret123
Join IPA domain and save the keytab in another location.
# ipa\-join \-k /tmp/host.keytab
.SH "EXIT STATUS"
The exit status is 0 on success, nonzero on error.
0 Success
1 Kerberos context initialization failed
2 Incorrect usage
3 Out of memory
4 Invalid service principal name
5 No Kerberos credentials cache
6 No Kerberos principal and no bind DN and password
7 Failed to open keytab
8 Failed to create key material
9 Setting keytab failed
10 Bind password required when using a bind DN
11 Failed to add key to keytab
12 Failed to close keytab
13 Host is already enrolled
14 LDAP failure
15 Incorrect bulk password
16 Host name must be fully\-qualified
17 XML\-RPC fault
18 Principal not found in host entry
19 Unable to generate Kerberos credentials cache
20 Unenrollment result not in XML\-RPC response
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