Hi Karsten, I notice that some errors are in intervals of 1 minute: 13:43 13:44 13:45 Maybe the connection to Redis of that thread are idle and the Redis server close the connection. More information here: https://redis.io/topics/clients#client-timeouts I hope it helps. *Alexandre Abreu* Voice Application Engineer & Team Leader __________________________ *BySide* (+351) 931 111 544 Rua Visconde Bóbeda, 70 4000-108 Porto __________________________ Advertência/Warning Este correio electrónico contém informação privada e estritamente confidencial. Qualquer leitura, retenção, distribuição ou cópia desta mensagem por qualquer pessoa que não seja o destinatário da presente mensagem é proibida. This e-mail is privileged, confidential and contains private information. Any reading, retention, distribution or copying of this communication by any person other than its intended recipient is prohibited. On Wed, Jul 22, 2020 at 1:26 PM Karsten Horsmann &lt;khorsmann(a)gmail.com <mailto:khorsmann@gmail.com>> wrote: Hi everyone, I get some strange errors from nbd_redis but my setup is working. kamailio 5.3.5 on CentOS 7.7.1908. Redis-Server is an haproxy frontend that pushed the stuff to an redis-sentinel cluster (with and really old version redis-3.2.1-2.el7.remi.x86_64). Any ideas on that?  Jul 22 13:42:52 siptrunk5 kamailio[112377]: ERROR: ndb_redis [redis_client.c:1083]: redisc_exec_argv(): Redis error: Server closed the connection Jul 22 13:43:34 siptrunk5 kamailio[112359]: ERROR: ndb_redis [redis_client.c:1083]: redisc_exec_argv(): Redis error: Server closed the connection Jul 22 13:43:34 siptrunk5 kamailio[112378]: ERROR: ndb_redis [redis_client.c:1083]: redisc_exec_argv(): Redis error: Server closed the connection Jul 22 13:44:33 siptrunk5 kamailio[112363]: ERROR: ndb_redis [redis_client.c:1083]: redisc_exec_argv(): Redis error: Server closed the connection Jul 22 13:45:03 siptrunk5 kamailio[112362]: ERROR: ndb_redis [redis_client.c:1083]: redisc_exec_argv(): Redis error: Server closed the connection Jul 22 14:00:01 siptrunk5 kamailio[112381]: ERROR: ndb_redis [redis_client.c:1083]: redisc_exec_argv(): Redis error: Server closed the connection Jul 22 14:00:01 siptrunk5 kamailio[112365]: ERROR: {24519 CANCEL 59644df6-68ac-4dd6-9fa5-1a9c2eda3b59} ndb_redis [redis_client.c:1083]: redisc_exec_argv(): Redis error: Server closed the connection # grep redis /etc/kamailio/kamailio.cfg loadmodule "ndb_redis.so" loadmodule "topos_redis.so" modparam("ndb_redis", "server", "name=CFG_REDIS_NAME;addr=CFG_REDIS_ADDR;port=6379;db=CFG_REDIS_DB") modparam("ndb_redis", "connect_timeout", 1500) # default 1000ms/1sec modparam("ndb_redis", "cmd_timeout", 1500) # default 1000ms/1sec modparam("topos", "storage", "redis") modparam("topos_redis", "serverid", "CFG_REDIS_NAME") --  Cheers *Karsten Horsmann* _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org <mailto:sr-users@lists.kamailio.org> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users