Awesome
Container bundled with utilities for network testing
Run the Node.JS application locally
npm init -y
npm install express
node app.js
The application at the moment does not have any functionality but only serves as a placeholder for potentially adding features later on. Network testing is carried out by connecting a shell into the running container and performing some diagnostic commands as shown in the sections below.
Connect to the Cloud Platform AWS EKS cluster
Login to https://login.live.cloud-platform.service.justice.gov.uk and download the ~/.kube/config file.
Minimize the permissions on the file
chmod 600 ~/.kube/config
Tell kubectl to use this config
kubectl config use-context live.cloud-platform.service.justice.gov.uk
Connect a shell into the running container
kubectl config set-context --current --namespace=nettest
kubectl get pods
kubectl exec --stdin --tty nettest-5948d76c47-g56s2 -- bash
Example tests to run from within the running container
Check if the container has access to the internet
curl ipinfo.io
Check if the container can access port 1521 at the IP address 10.26.12.202
curl --connect-timeout 5 10.26.12.202:1521
In the above
curl: (28) Connection timed out after 5001 millisecondsmeans NOcurl: (56) Recv failure: Connection reset by peermeans YES
Run a speed test
iperf3 -c ping.online.net -p 5209
How to redeploy the container into the Cloud Platform
Change the application code and/or the Dockerfile
Build the docker image
docker build -t nettest .
Retrieve ECR info
cloud-platform decode-secret -n nettest -s ecr-repo-nettest
Configure the AWS profile
~/.aws/config
[profile nettest]
region = eu-west-2
output=json
aws_access_key_id=<refer to the ECR info above>
aws_secret_access_key=<refer to the ECR info above>
Login to the repository
aws ecr get-login-password --region eu-west-2 --profile nettest \
| docker login --username AWS --password-stdin \
754256621582.dkr.ecr.eu-west-2.amazonaws.com
Tag the image and push it to your ECR
docker tag nettest 754256621582.dkr.ecr.eu-west-2.amazonaws.com/modernisation-platform/nettest-ecr:1.2
Push
docker push 754256621582.dkr.ecr.eu-west-2.amazonaws.com/modernisation-platform/nettest-ecr:1.2
Update the image in kubectl_deploy/deployment.yaml, then deploy
kubectl -n nettest apply -f kubectl_deploy
Open https://nettest.apps.live.cloud-platform.service.justice.gov.uk
Additional useful commands
kubectl delete pod nettest-76bfd79fd9-9xfr6
kubectl describe pod nettest-76bfd79fd9-9xfr6