Red Hat Summit第8章 Adjusting the performance of the KDC
To optimize the performance of Kerberos Key Distribution Center (KDC), which is responsible for authenticating users, hosts, and services, adjust key parameters based on your deployment’s traffic patterns.
8.1. Adjusting the length of the KDC listen queue
You can adjust the size of the listen queue length for the KDC daemon by setting the kdc_tcp_listen_backlog option in the [kdcdefaults] section of the /var/kerberos/krb5kdc/kdc.conf file. The default value of 5 may be too low for some IdM deployments that experience high amounts of Kerberos traffic, but setting this value too high degrades performance.
| Default value |
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| Valid range |
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Procedure
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Open the
/var/kerberos/krb5kdc/kdc.conffile in a text editor. Set the TCP listen backlog to your desired value, such as
7.[kdcdefaults] ... kdc_tcp_listen_backlog = 7-
Save and close the
/var/kerberos/krb5kdc/kdc.conffile. - Restart the KDC to load the new settings.
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