It looks like cp1089 ran out of FDs:
Mar 27 23:00:14 cp1089 traffic_manager[27021]: [Mar 27 23:00:14.216] [LOG_FLUSH] ERROR: Error opening logging directory /srv/trafficserver/tls/var/log to perform a space check: Too many open files.
and on the next reload to refresh OCSP data ats-tls show errors initialing the SSL context, accessing host.db and reloading the tls.lua script:
Mar 27 23:35:53 cp1089 traffic_manager[27021]: [Mar 27 17:50:07.069] [ET_TASK 1] NOTE: ssl_multicert.config done reloading! Mar 27 23:35:53 cp1089 traffic_manager[27021]: [Mar 27 22:56:32.353] [ACCEPT 0:443] WARNING: accept thread received transient error: errno = 24 Mar 27 23:35:53 cp1089 traffic_manager[27021]: [Mar 27 23:05:52.570] [ET_TASK 0] WARNING: Unable to finalize sync of cache to disk /srv/trafficserver/tls/var/run/host.db: Bad file descriptor [...] Mar 28 05:50:03 cp1089 traffic_manager[27021]: [Mar 28 05:50:03.226] [ET_TASK 1] ERROR: [ts_lua][ts_lua_reload_module] luaL_loadfile /srv/trafficserver/tls/etc/lua/tls.lua failed: cannot open /srv/trafficserver/tls/etc/lua/tls.lua: Too many open files [...] Mar 28 06:57:53 cp1089 traffic_manager[27021]: [Mar 28 06:57:52.916] [ET_NET 7] ERROR: failed to create SSL server session
