How do I run a consul docker image?
By following this tutorial you will learn how to:
- Get the Docker image for Consul.
- Configure and run a Consul server.
- Configure and run a Consul client.
- Interact with the Consul agents.
- Perform maintenance operations (backup your Consul data, stop a Consul agent, etc.)
How does docker overlay work?
The overlay network driver creates a distributed network among multiple Docker daemon hosts. This network sits on top of (overlays) the host-specific networks, allowing containers connected to it (including swarm service containers) to communicate securely when encryption is enabled.
How do I join a Consul server?
From the new server, you can join any member of the existing datacenter: $ consul join Successfully joined cluster by contacting 1 nodes. $ consul join Successfully joined cluster by contacting 1 nodes.
How do you run a Consul?
Start the Consul agent in development mode.
- $ consul agent -dev.
- $ consul members.
- $ curl localhost:8500/v1/catalog/nodes.
- $ dig @127.0.0.1 -p 8600 Judiths-MBP.node.consul.
- $ consul leaveGraceful leave complete.
How overlay network works in Kubernetes?
Overlay networks such as vxlan or ipsec (which you might be familiar with from setting up secure VPNs) encapsulate the packet into another packet. This makes entities addressable which are outside of the scope of another machine.
How does consul work in a docker image?
Note, the Consul Docker image sets up the Consul configuration directory at /consul/config by default. The agent will load any configuration files placed in that directory. The configuration directory is not exposed as a volume and will not persist data. Consul uses it only during startup and does not store any state there.
How many consul agents do I need for Docker Hub?
Typically, you’ll run a single Consul agent container on each host, running alongside the Docker daemon. You’ll also need to configure some of the agents as servers (at least 3 for a basic HA setup).
How can I run consul in a container?
You can access a containerized Consul datacenter in several different ways. You can execute Consul commands directly inside of your Consul containers using docker exec. You can also issue commands inside of your container by opening an interactive shell and using the Consul binary included in the container.
How do I stop a container in Docker?
To stop a container, run docker stop. To start a container, run docker start. To do an in-memory reload, send a SIGHUP to the container. As long as there are enough servers in the datacenter to maintain quorum, Consul’s autopilot feature will handle removing servers whose containers were stopped.