[v16] Improve Teleport's ability to reconnect to LDAP #48008
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If Teleport loses it's connection to the LDAP server, it will attempt to initiate a new condition when: 1. The user tries to connect to a desktop and Teleport fails to obtain the user's SID. 2. The periodic desktop discovery routine attempts to search LDAP for desktops. In some circumstances, #2 never gets the chance to apply, since discovery is skipped when LDAP is not ready. Additionally, if LDAP is not ready, then you can't connect to a desktop, so #1 can't happen either, which means Teleport won't connect again until it is restarted.
If LDAP-based discovery is not enabled then we may go long periods of time without trying to use the LDAP connection, which prevents us from detecting disconnects (and restoring the connection) in a timely manner. When discovery is disabled, perform a read every 5 minutes and reconnect if we detect a connection problem.
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I'm going to hold this one open until the v17 test plan completes. |
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In #36281 we made some improvements to the LDAP reconnect behavior. These changes considered the case where we had a connection to the LDAP server but then got disconnected. They did not consider the case where we never succesfully established a connection at all.
rosstimothy
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Nov 14, 2024
espadolini
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Nov 18, 2024
gzdunek
approved these changes
Nov 18, 2024
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Backport #36281 to branch/v16
Backport #48041 to branch/v16
changelog: ensure that Teleport can re-establish broken LDAP connections.