ad: use realm renew for keytab renewal #7848
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When calling 3rd party child processes we have no control about how the child sends its output and if the child might trigger a call to SSSD. To avoid a deadlock, SSSD backend waiting for I/O from the child and child waiting for responds from SSSD, SSSD should use non-blocking calls when reading from the child.
alexey-tikhonov
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With the patches SSSD can use
realm/realmdas an alternative toadclito renew the machine account credentials in the host keytab and AD. The main use case is to allow the renewal even if the user SSSD is running as cannot access the keytab. For thisrealmgot a new sub-commandrenew, see https://gitlab.freedesktop.org/sbose/realmd/-/commits/add_renew. To make testing easier a SSSD test build together with a test build of realmd can be found at https://copr.fedorainfracloud.org/coprs/sbose/realm-renew/.