Poller Group 0 - Poller #1
config.php:
$config['distributed_poller_name']           = 'librenms-phx-01 - Group 0, Poller 1';
$config['distributed_poller_group']          = '0';
$config['distributed_poller_memcached_host'] = "localhost";
$config['distributed_poller_memcached_port'] = 11211;
$config['distributed_poller']                = true;

/opt/librenms/.env:
APP_KEY=base64:h47Ov5wA[...]]NCn9jmqAN90=

DB_HOST=localhost
DB_DATABASE=librenms
DB_USERNAME=librenms
DB_PASSWORD=

NODE_ID=5d24dd39a859d
DB_PORT=3306
LIBRENMS_USER=librenms

$ php ./validate.php
====================================
Component | Version
--------- | -------
LibreNMS  | 1.67-21-g59bc379a3
DB Schema | 2020_08_28_212054_drop_uptime_column_outages (173)
PHP       | 7.3.19-1~deb10u1
Python    | 3.7.3
MySQL     | 10.3.23-MariaDB-0+deb10u1-log
RRDTool   | 1.7.1
SNMP      | NET-SNMP 5.7.3
====================================

[OK]    Composer Version: 1.10.13
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct

Poller Group 0 - Poller #2
config.php:
$config['distributed_poller_name']           = 'librenms-phx-02 - Group 0, Poller 2';
$config['distributed_poller_group']          = '0';
$config['distributed_poller_memcached_host'] = "10.32.8.88";
$config['distributed_poller_memcached_port'] = 11211;
$config['distributed_poller']                = true;

/opt/librenms/.env:
APP_KEY=base64:h47Ov5wA[...]]NCn9jmqAN90=

DB_HOST=10.32.8.88
DB_DATABASE=librenms
DB_USERNAME=librenms
DB_PASSWORD=

NODE_ID=5f5818d5b8de5
DB_PORT=3306
LIBRENMS_USER=librenms

$ php ./validate.php
====================================
Component | Version
--------- | -------
LibreNMS  | 1.67-21-g59bc379a3
DB Schema | 2020_08_28_212054_drop_uptime_column_outages (173)
PHP       | 7.3.19-1~deb10u1
Python    | 3.7.3
MySQL     | 10.3.23-MariaDB-0+deb10u1-log
RRDTool   | 1.7.1
SNMP      | NET-SNMP 5.7.3
====================================

[OK]    Composer Version: 1.10.13
[OK]    Dependencies up-to-date.
[OK]    Database connection successful
[OK]    Database schema correct