Which ports must be opened in EC2 Security Group to access Docker apps?
Application port (e.g. 80, 443, 8080)
SSH (22)
How do you expose a Docker container port on EC2?
docker run -p 8080:80 nginx
What happens if Docker service is not running?
Containers won’t start
Docker commands will fail
CI/CD pipelines break
How do you start/stop Docker service on EC2?
sudo systemctl start docker
sudo systemctl stop docker
sudo systemctl restart docker
How do you uninstall Docker from EC2?
sudo systemctl stop docker
sudo systemctl disable docker
sudo yum remove -y docker docker-client docker-client-latest \
docker-common docker-latest docker-latest-logrotate docker-logrotate \
docker-engine containerd.io runc
sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd
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