Lab
A Cloud Guru

Using Storage Volumes with Docker Swarm

Storage volumes provide a powerful and flexible way to add persistent storage to your containers, but what if you need to share storage volumes across multiple Docker hosts, such as a Swarm cluster? In this lab, you will have the opportunity to work with a simple method of creating shared volumes usable across multiple swarm nodes using the `sshfs` volume driver.

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Path Info

Level

Intermediate

Duration

45m

Published

Jun 06, 2019

Challenge

Set up the external storage location.
1. On the storage server, create the storage directory.
```
sudo mkdir -p /etc/docker/storage
sudo chown cloud_user:cloud_user /etc/docker/storage
```
1. Copy the nginx configuration file into the storage directory.
```
cp /home/cloud_user/nginx.conf /etc/docker/storage
```
Challenge

Install the vieux/sshfs plugin.
1. Install the vieux/sshfs plugin on the swarm manager and worker node.
```
docker plugin install --grant-all-permissions vieux/sshfs
```
Challenge

Create the nginx service that uses the shared volume.
1. Create the nginx-web service.
Create the container. Be sure to replace <cloud_user password> with the actual password.
```
docker service create -d 
   --replicas=3 
   --name nginx-web 
   -p 8080:9773 
   --mount volume-driver=vieux/sshfs,source=nginx-config-vol,target=/etc/nginx/,[email protected]:/etc/docker/storage,volume-opt=password="<cloud_user password>" nginx:latest
```
1. Verify that the service is working properly.
```
curl localhost:8080
```
If everything is set up correctly, you should see HTML from the nginx Welcome page.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.