I just installed the latest release of docker-ce on CentOS, but I can't reach published ports from a neighboring server and can't reach the outside from the container itself.

CentOS firwalld blocks outgoing docker requests, leading to failing ingress/egress dns resolving.

In my case, disrupted Nextcloud working (since I have external primary object storage configured), as well as outgoing requests from SearX.

Understanding how to combine docker with a microservice architecture - by using event driven setup

Top-like interface for container metrics. top/htop for containers

Git Server in Docker. Contribute to jkarlosb

Minimal forward authentication service that provides Google and OpenID Connect

Enabling SSO with traefik for multiple end-points

Docker Swarm instrumentation with Prometheus, Grafana, cAdvisor, Node Exporter and Alert Manager - stefanprodan

Docker compose for Grafana Loki, like Prometheus but for logs - swarmstack

Explanations for logging containers which do not write to stdout/stderr

Explanations for setting up new driver and flushing nodes

A Docker swarm-based starting point for operating highly-available containerized applications. - swarmstack

When I had this problem, it was a DNS problem. Traefik was trying to connect to the wrong IP address - an IP address that was on a network with no access from traefik.

Setting providers.docker.network solved my problem - but careful, you need to use the full network name as visible with docker network ls (in my case it was pi_traefik-web - for you it should be traefik_proxy).

In theory, you could also set the label traefik.docker.network=traefik_proxy to your nextcloud-app service.

This problem can be diagnosed through the traefik dashboard: look for the network ip a specific service is assigned -- does it show the 'public' network compatible ip?

I am using portainer and am unable to manage remote endpoints. I tried using the command line to connect to remote docker nodes, but got a message Cannot connect to the Docker daemon at tcp:

Awesome traefik 2.0 explanation using docker (compose)

Really good introductory video for kubernetes concepts;

breaks down with simple analogies and really quick history: pods, services, ingress, deployments, resource allocation vs dynamic resource management; rolling update; and probably 1-2 things more

CodiMD - Realtime collaborative markdown notes on all platforms. - codimd

A tiny docker image with a working tectonic latex engine and biber with a primed cache.

Visit my page on docker hub at: https://hub.docker.com/r/dxjoke/tectonic-docker/ \
Visit my page on github at: https://github.com/WtfJoke/tectonic-docker \

Only ~75MB compressed.

A fully working latex engine. Packages that are not in the cache will be downloaded on demand.

I use this container to build my thesis automated. It includes bibtex8 and Glossaries

docker gitlab ssl traefik autodeploy

Various docker tools to learn

especially single-cluster setups like

• minikube
• microk8s
• kind (kubernetes in docker)

and more