Have you check authentication source order in nsswitch.conf ? Maybe there it hit some timeout or so.
From: Winfried de Heiden via FreeIPA-users <[email protected]> Sent: dimanche 9 février 2020 13:55 To: [email protected] Cc: Winfried de Heiden <[email protected]> Subject: [Freeipa-users] sss_ssh_authorizedkeys slow on IPA-server Hi all, For some reason, for a particular user, sss_ssh_authorizedkeys is extremely slow on the IPA-server: time /usr/bin/sss_ssh_authorizedkeys <username> ~ real 0m9.520s user 0m0.022s sys 0m0.018s It will return all the public keys, but is is slow, causing SSH-login delays using a ssh-keys. On another CentOS Stream (8.1) IPA-client, using the same IPA-server: time /usr/bin/sss_ssh_authorizedkeys <username> ~ real 0m0.020s user 0m0.005s sys 0m0.003s Some difference... Adding "certificate_verification = no_ocsp" to sssd.conf on the IPA-server will bring back performance, but sound like a poor workaround. Any idea what is happening here? Some more details: CentOS Linux release 8.1.1911 (Core) (stream) ipa-client-4.8.0-13.module_el8.1.0+265+e1e65be4.x86_64 sssd-common-2.2.0-19.el8.x86_64 Winfried
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