These stack files were presented during the DevOps Congress in Wrocław, October 19th, 2019. During this event I gave a talk entitiled:
The deployment scenario is straightforward. I assume that you already have a working Docker Swarm cluster and you can easily execute docker node ls command to get list of nodes consiting the cluster.
toxdjn5jle3cd15f9m1jdwapw vmname9qwey76t Ready Active 19.03.3
wd0ljmqto337s9257k6fhv2zm vmname53mf3tp2 Ready Active Reachable 19.03.3
rzygxa2u1q6xaiijjxext4uuh * vmnameemyh88xp Ready Active Leader 19.03.3
jo55zm923572hi068athu8aai vmnameoxe4v89o Ready Active Reachable 19.03.3
If so, you can deploy a stack file containing two services: Traefik and Visualizer. However, before deploying the stack you should add label to any of your node or nodes to indicate where Traefik should be deployed. Due to the fact, that in the latest version of Traefk (2.0) integration with Consul is removed I recommend to add the label to the only one node. You can have a look on my previous example when I integrated Traefik with 3 nodes Consul cluster where SSL certificates:
You can add label by executing this command.
docker node update vmname53mf3tp2 --label-add traefik=true
Than you can verify it by inspecting the node: docker node inspect vmname53mf3tp2 --pretty
The stack file can be deployed in following way:
docker stack deploy -c stack-traefik.yml proxy --with-registry-auth --prune
You can see what services have been deployed by executing command:
docker service ls
you should recieve following output:
rl7hooijmy0h proxy_traefik replicated 1/1 traefik:2.0.2 *:80->80/tcp, *:443->443/tcp
vs5yduxcmlq9 proxy_visualizer replicated 1/1 dockersamples/visualizer:latest
Than you can deploy application stack containing these two simple services: Nginx and a simple backend written in NodeJs.
docker stack deploy -c stack-app.yml app --with-registry-auth --prune
Listing of the running services should looks as it follows:
xcmz8522e5pk app_backend replicated 2/2 jakubhajek/nodejs-backend:latest
wiaag9k5azd6 app_frontend replicated 2/2 nginx:1.17-alpine
rl7hooijmy0h proxy_traefik replicated 1/1 traefik:2.0.2 *:80->80/tcp, *:443->443/tcp
vs5yduxcmlq9 proxy_visualizer replicated 1/1 dockersamples/visualizer:latest
In my example I use following urls which can be probably updated in your use case:
traefik.labs.cometari.eu,viz.labs.cometari.eu,node-app.labs.cometari.eu
The login credentails to the protected sites are: admin/admin.
I use also Slapper to generate network traffic and test zero downtime depoyment which is more complex aspects. The tool use the endpoint url from file node-app.target. Here is the command I use to challenge my stack and generate some network traffic:
docker run -it -v${PWD}:/app jakubhajek/slapper:1 slapper -targets /app/node-app.target -minY 30ms -maxY 200ms -timeout 30s -rate 50
You can try to scale up e.g. frontend application by:
docker service scale app_frontend=8
and then try to scale it down by simulating any issue with a container:
docker servie scale app_frontend=7
Have fun with Traefik and container orchestration tools!
These stack files were presented during the DevOps Congress in Wrocław, October 19th, 2019. During this event I gave a talk entitiled:
The deployment scenario is straightforward. I assume that you already have a working Docker Swarm cluster and you can easily execute docker node ls command to get list of nodes consiting the cluster.
toxdjn5jle3cd15f9m1jdwapw vmname9qwey76t Ready Active 19.03.3
wd0ljmqto337s9257k6fhv2zm vmname53mf3tp2 Ready Active Reachable 19.03.3
rzygxa2u1q6xaiijjxext4uuh * vmnameemyh88xp Ready Active Leader 19.03.3
jo55zm923572hi068athu8aai vmnameoxe4v89o Ready Active Reachable 19.03.3
If so, you can deploy a stack file containing two services: Traefik and Visualizer. However, before deploying the stack you should add label to any of your node or nodes to indicate where Traefik should be deployed. Due to the fact, that in the latest version of Traefk (2.0) integration with Consul is removed I recommend to add the label to the only one node. You can have a look on my previous example when I integrated Traefik with 3 nodes Consul cluster where SSL certificates:
You can add label by executing this command.
docker node update vmname53mf3tp2 --label-add traefik=true
Than you can verify it by inspecting the node: docker node inspect vmname53mf3tp2 --pretty
The stack file can be deployed in following way:
docker stack deploy -c stack-traefik.yml proxy --with-registry-auth --prune
You can see what services have been deployed by executing command:
docker service ls
you should recieve following output:
rl7hooijmy0h proxy_traefik replicated 1/1 traefik:2.0.2 *:80->80/tcp, *:443->443/tcp
vs5yduxcmlq9 proxy_visualizer replicated 1/1 dockersamples/visualizer:latest
Than you can deploy application stack containing these two simple services: Nginx and a simple backend written in NodeJs.
docker stack deploy -c stack-app.yml app --with-registry-auth --prune
Listing of the running services should looks as it follows:
xcmz8522e5pk app_backend replicated 2/2 jakubhajek/nodejs-backend:latest
wiaag9k5azd6 app_frontend replicated 2/2 nginx:1.17-alpine
rl7hooijmy0h proxy_traefik replicated 1/1 traefik:2.0.2 *:80->80/tcp, *:443->443/tcp
vs5yduxcmlq9 proxy_visualizer replicated 1/1 dockersamples/visualizer:latest
In my example I use following urls which can be probably updated in your use case:
traefik.labs.cometari.eu,viz.labs.cometari.eu,node-app.labs.cometari.eu
The login credentails to the protected sites are: admin/admin.
I use also Slapper to generate network traffic and test zero downtime depoyment which is more complex aspects. The tool use the endpoint url from file node-app.target. Here is the command I use to challenge my stack and generate some network traffic:
docker run -it -v${PWD}:/app jakubhajek/slapper:1 slapper -targets /app/node-app.target -minY 30ms -maxY 200ms -timeout 30s -rate 50
You can try to scale up e.g. frontend application by:
docker service scale app_frontend=8
and then try to scale it down by simulating any issue with a container:
docker servie scale app_frontend=7
Have fun with Traefik and container orchestration tools!