answering to myself:
here is the correct way in CAS 7.3.3:
cas.ticket.registry.redis.cluster.nodes[0].host=cas1.dnsname
cas.ticket.registry.redis.cluster.nodes[0].port=6379
cas.ticket.registry.redis.cluster.nodes[0].type=MASTER
cas.ticket.registry.redis.cluster.nodes[1].host= cas3.dnsname 
cas.ticket.registry.redis.cluster.nodes[1].port=6379
cas.ticket.registry.redis.cluster.nodes[1].type=MASTER
cas.ticket.registry.redis.cluster.nodes[2].host= cas3.dnsname 
cas.ticket.registry.redis.cluster.nodes[2].port=6379
cas.ticket.registry.redis.cluster.nodes[2].type=MASTER

and this but it seems optional (working the same without):
cas.ticket.registry.redis.cluster.nodes[3].host= cas1.dnsname 
cas.ticket.registry.redis.cluster.nodes[3].port=6380
cas.ticket.registry.redis.cluster.nodes[3].type=REPLICA
cas.ticket.registry.redis.cluster.nodes[4].host= cas2.dnsname 
cas.ticket.registry.redis.cluster.nodes[4].port=6380
cas.ticket.registry.redis.cluster.nodes[4].type=REPLICA
cas.ticket.registry.redis.cluster.nodes[5].host= cas3.dnsname 
cas.ticket.registry.redis.cluster.nodes[5].port=6380
cas.ticket.registry.redis.cluster.nodes[5].type=REPLICA


Le mercredi 28 janvier 2026 à 15:39:05 UTC+1, Alexis M a écrit :

> Hello,
> trying to figure out how to configure Redis cluster in cas.properties.
>
> In my build.gradle:
> implementation "org.apereo.cas:cas-server-support-redis-ticket-registry"
>
> In my cas.properties:
> cas.ticket.registry.redis.enabled=true
> cas.ticket.registry.redis.cluster.nodes[0].host=...
> cas.ticket.registry.redis.cluster.nodes[1].host=...
> cas.ticket.registry.redis.cluster.nodes[2].host=...
> cas.ticket.registry.redis.password=<password>
>
> The logs:
> INFO [org.apereo.cas.redis.core.RedisObjectFactory] - <Redis native 
> connection sharing is turned [on]>
> Unsatisfied dependency expressed through method 'ticketRedisTemplate' 
> parameter 1: Error creating bean with name 'redisTicketConnectionFactory' 
> defined in class path resource 
> [org/apereo/cas/config/CasRedisTicketRegistryAutoConfiguration$RedisTicketRegistryCoreConfiguration.class]:
>  
> *RedisURIs must not be empty*
>
> For the  cas.ticket.registry.redis.cluster.nodes[].host  I have tried ip 
> address, CNAME, with "", without, with redis:// ...
>
> Any guess?
>
> Thank you
>

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