Distributed poller not joining cluster

Help
4

Now I understood that distributed polling would be the case if I had both pollers in group 0, balancing the load. But that is not the case. What I want at this point is 2 independent pollers with only RRD/Frontend. Please find below the .env:

Server1:

APP_KEY=base64:xxx

DB_HOST=server1
DB_DATABASE=librenms
DB_USERNAME=librenms
DB_PASSWORD=password

#APP_URL=
NODE_ID=5f520982290d2
DB_PORT=3306
LIBRENMS_USER=librenms
REDIS_HOST=10.0.0.51
REDIS_PORT=6379
# OR
# REDIS_SENTINEL=192.0.2.1:26379
# REDIS_SENTINEL_SERVICE=myservice

Server2:

APP_KEY=base64:xxx
DB_HOST=localhost
DB_DATABASE=librenms
DB_USERNAME=librenms
DB_PASSWORD=password

#APP_URL=
NODE_ID=5f51ff0da3811
DB_PORT=3306
DB_SOCKET=/database/mariadb/mysql/mysql.sock
LIBRENMS_USER=librenms
REDIS_HOST=10.0.0.51
REDIS_PORT=6379
# OR
# REDIS_SENTINEL=192.0.2.1:26379
# REDIS_SENTINEL_SERVICE=myservice

REDIS_DB=0
#REDIS_PASSWORD=
#REDIS_TIMEOUT=60