Portainer

To quote Portainer themselves:
Quote
Portainer is the most versatile container management software that simplifies your secure adoption of containers with remarkable speed.
I use portainer (and portainer agent) to give me a quick and easy cursory overview of all of my containers and their status.

My main Portainer instance is installed on my primary server, Titan, as part of a stack with Traefik
I install portainer agent on my other server that are running docker and connect them using the main portainer instance on titan.
docker-compose
networks:
phobos-network:
external: true
services:
agent:
ports:
- 9001:9001
container_name: portainer_agent
networks:
phobos-network:
ipv4_address: "172.20.0.2"
restart: unless-stopped
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- /var/lib/docker/volumes:/var/lib/docker/volumes
image: portainer/agent:lts
networks:
tethys-network
external: true
services:
agent:
ports:
- 9001:9001
container_name: portainer_agent
networks:
tethys-network:
ipv4_address: "172.21.0.2"
restart: unless-stopped
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- /var/lib/docker/volumes:/var/lib/docker/volumes
image: portainer/agent:lts
networks:
pihole1-network:
external: true
services:
agent:
ports:
- 9001:9001
container_name: portainer_agent
networks:
pihole1-network:
ipv4_address: "172.22.0.2"
restart: unless-stopped
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- /var/lib/docker/volumes:/var/lib/docker/volumes
image: portainer/agent:lts