use plugins emqx_auth_redis, After running for a few hours, failed for not_authorized

[imkos]

• EMQ X version (e.g. emqx_ctl status):
• 4.3.3/4.2.12
• OS (e.g. cat /etc/os-release):
• k8s Cluster 1.20

#redis
EMQX_AUTH__REDIS__SERVER: ***
EMQX_AUTH__REDIS__PASSWORD: ***
EMQX_AUTH__REDIS__DATABASE: "1"
EMQX_AUTH__REDIS__PASSWORD_HASH: sha256,salt
EMQX_AUTH__REDIS__AUTH_CMD: HMGET mqtt_user:%u password salt
EMQX_AUTH__REDIS__ACL_CMD: HGETALL mqtt_acl:%u:%c
EMQX_ALLOW_ANONYMOUS: "false"
EMQX_ACL_NOMATCH: deny

[Redis] do_check_acl error: tcp_closed
[Redis] Command: "HMGET mqtt_user:%u password salt" failed: tcp_closed
[Channel] Client *** (Username: '****') login failed for not_authorized

[root@node1 ~]# ipvsadm -lnc|grep 6379
TCP 05:54 ESTABLISHED 10.244.1.131:33307 10.97.106.32:6379 10.244.1.121:6379
TCP 05:54 ESTABLISHED 10.244.1.131:34995 10.97.106.32:6379 10.244.1.121:6379
TCP 13:27 ESTABLISHED 10.244.1.48:40412 10.97.106.32:6379 10.244.1.121:6379
TCP 05:54 ESTABLISHED 10.244.1.131:45147 10.97.106.32:6379 10.244.1.121:6379
TCP 11:16 ESTABLISHED 10.244.1.52:49206 10.97.106.32:6379 10.244.1.121:6379
TCP 11:16 ESTABLISHED 10.244.1.175:47604 10.97.106.32:6379 10.244.1.121:6379
TCP 02:53 ESTABLISHED 10.244.1.129:36549 10.97.106.32:6379 10.244.1.121:6379
TCP 14:27 ESTABLISHED 10.244.1.96:40456 10.97.106.32:6379 10.244.1.121:6379
TCP 02:53 ESTABLISHED 10.244.1.131:43947 10.97.106.32:6379 10.244.1.121:6379

[root@node1 ~]# kubectl get pods -o wide|grep emqx
emqx-0 1/1 Running 0 24h 10.244.1.129 node1
emqx-1 1/1 Running 0 24h 10.244.1.130 node1
emqx-2 1/1 Running 0 24h 10.244.1.131 node1

emqx-0, emqx-1 no redis connection.