Sds-hd kerberos: Difference between revisions
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#REDIRECT [[SDS@hd]] |
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== Kerberos Environment for SDS@hd == |
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=== Prerequisites === |
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* For Kerberos authentication to work, a correctly synchronized system time must be set on each nfs client (e.g. via [https://linux.die.net/man/8/ntpdate ntpdate] ntp01.urz.uni-heidelberg.de or [https://chrony.tuxfamily.org chrony]) |
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The following parameters of kerberos tickets are set on server side: |
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* max. Lifetime of a Serviceticket: 10 hours |
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* max. Lifetime of a Userticket: 24 hours |
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* max. Renewaltime for Usertickets: 10 days |
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The properties (e.g. lifetimes, encryption, ...) of the kerberos tickets can be changed on client site with different kinit parameters (see manpages of kinit) or via ''/etc/krb5.conf''. |
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First you have to install kerberos packages in your system to provide a working kerberos environment. The exact names of the packages depending on you linux distribution (see examples below). |
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''Example RedHat/CentOS'' |
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<pre>yum install krb5-workstation</pre> |
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''Example debian/ubuntu'' |
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<pre>apt install krb5-user</pre> |
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On ubuntu server: nfs-kernel-server |
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After installing the packages you have to use the following kerberos parameters for connecting to SDS@hd: |
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* Default Realm = BWSERVICES.UNI-HEIDELBERG.DE |
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* KDC = bwservices.uni-heidelberg.de |
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So your kerberos configuration file (/etc/krb5.conf) should contain the following entries: |
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<pre> |
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[libdefaults] |
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default_realm = BWSERVICES.UNI-HEIDELBERG.DE |
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[realms] |
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BWSERVICES.UNI-HEIDELBERG.DE= { |
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kdc = bwservices.uni-heidelberg.de |
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admin_server = bwservices.uni-heidelberg.de |
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} |
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[domain_realm] |
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.uni-heidelberg.de = BWSERVICES.UNI-HEIDELBERG.DE |
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uni-heidelberg.de = BWSERVICES.UNI-HEIDELBERG.DE |
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</pre> |
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The keytab file of the machine, which you get from the [mailto:sds-hd-support@urz.uni-heidelberg.de SDS@hd Team], has to be stored as ''/etc/krb5.keytab'' in the system. |
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Latest revision as of 17:10, 19 August 2022
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