Onlyoffice 9.10 whit haproxy, redisClient error Error: Socket closed unexpectedly

Hello
i’ve 3 node whit
nginx-1.28.0-1.el8.ngx.x86_64
onlyoffice-documentserver-ee-9.1.0-168.el7.x86_64
erlang-26.2.5.4-1.el8.x86_64
redis-8.2.2-3.module_redis.8.2.el8.remi.x86_64
haproxy-1.8.27-5.el8_10.1.x86_64

the redis has confiugured whi 2 slave and 1 master, haproxy loadbalancer. before patching to 7.2 to 9.10 no error messages after that:

Nov 05 08:58:28 lcmdsonlyoff02 sh[106469]: [2025-11-05T08:58:28.829] [ERROR] [localhost] [docId] [userId] nodeJS - redisClient error Error: Socket closed unexpectedly
Nov 05 08:58:28 lcmdsonlyoff02 sh[106469]: at Socket. (/snapshot/server/DocService/node_modules/@redis/client/dist/lib/client/socket.js:194:118)
Nov 05 08:58:28 lcmdsonlyoff02 sh[106469]: at Object.onceWrapper (node:events:642:26)
Nov 05 08:58:28 lcmdsonlyoff02 sh[106469]: at Socket.emit (node:events:527:28)
Nov 05 08:58:28 lcmdsonlyoff02 sh[106469]: at TCP. (node:net:709:12)

haproxy.cfg

#---------------------------------------------------------------------
# Example configuration for a possible web application.  See the
# full configuration options online.
#
#   https://www.haproxy.org/download/1.8/doc/configuration.txt
#
#---------------------------------------------------------------------

#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
    log         127.0.0.1 local2
    chroot      /var/lib/haproxy
    pidfile     /var/run/haproxy.pid
    maxconn     4000
    user        haproxy
    group       haproxy
    daemon
    stats socket /var/lib/haproxy/stats
    ssl-default-bind-ciphers PROFILE=SYSTEM
    ssl-default-server-ciphers PROFILE=SYSTEM

#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
    mode                    http
    log                     global
    option                  httplog
    option                  dontlognull
    option http-server-close
    option forwardfor       except 127.0.0.0/8
    option                  redispatch
    retries                 3
    timeout http-request    10s
    timeout queue           1m
    timeout connect         10s
    timeout client          1m
    timeout server          1m
    timeout http-keep-alive 10s
    timeout check           10s
    maxconn                 3000

#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
frontend main
    bind *:5000
    acl url_static       path_beg       -i /static /images /javascript /stylesheets
    acl url_static       path_end       -i .jpg .gif .png .css .js
    use_backend static          if url_static
    default_backend             app

#---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such
#---------------------------------------------------------------------
backend static
    balance     roundrobin
    server      static 127.0.0.1:4331 check

#---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend app
    balance     roundrobin
    server  app1 127.0.0.1:5001 check
    server  app2 127.0.0.1:5002 check
    server  app3 127.0.0.1:5003 check
    server  app4 127.0.0.1:5004 check

# Config custom per OnlyOffice
# rif:
#   GPT22C22_MdS_documento_architetturale_installazione_opensource.pdf
defaults REDIS
    mode tcp
    timeout connect 10s
    timeout server 3600s
    timeout client 3600s
    timeout tunnel 3600s
    timeout check 5s
frontend f_redis
    bind *:6379 name redis
    default_backend bk_redis

backend bk_redis
    balance first
    option tcp-check
    tcp-check connect
    tcp-check send PING\r\n
    tcp-check expect string +PONG
    tcp-check send info\ replication\r\n
    tcp-check expect string role:master
    tcp-check send QUIT\r\n
    tcp-check expect string +OK
    server R1 10.175.0.80:6380 check inter 5s fall 3 rise 2
    server R2 10.175.0.81:6380 check inter 5s fall 3 rise 2
    server R3 10.175.0.82:6380 check inter 5s fall 3 rise 2

local.jason

{
“services”: {
“CoAuthoring”: {
“sql”: {
“dbHost”: “127.0.0.1”,
“dbName”: “onlyoffice”,
“dbUser”: “onlyoffice”,
“dbPass”: “test123”,
“type”: “mysql”,
“dbPort”: “6446”
},
“redis”: {
“host”: “127.0.0.1”,
“port”: “6379”
},
“token”: {
“enable”: {
“request”: {
“inbox”: true,
“outbox”: true
},
“browser”: true
},
“inbox”: {
“header”: “Authorization”
},
“outbox”: {
“header”: “Authorization”
}
},
“secret”: {
“inbox”: {
“string”: “test123”
},
“outbox”: {
“string”: “test123”
},
“session”: {
“string”: “test123”
},
“browser”: {
“string”: “test123”
}
}
}
},
“queue”: {
“type”: “rabbitmq”
},
“rabbitmq”: {
“url”: “amqp://guest:guest@127.0.0.1”
},
“storage”: {
“fs”: {
“secretString”: “BZCKaBOwgNxMJ456NnOX”
}
},
“wopi”: {
“enable”: false,
etc etccccc
}
}