Docker commands - Platform - BlueCat Gateway - 21.11.2

Gateway Installation Guide

Product name
BlueCat Gateway

This section contains tables of commonly used Docker commands and flags. For a complete list of Docker commands click here.

Table. Understanding the docker run command
Docker run command:
docker run -d \
-p 80:8000 \
-p 443:44300 \
-v <path_to_workspace>:/bluecat_gateway/ \
-v <path_to_mapped_log_directory>:/logs/ \
-e BAM_IP=<your bam ip> \
--dns=<ip address> \
--name bluecat_gateway<version> 
Code Segment: Function:
docker run Is used to run a command in a new container.
-d The -d flag indicates to run the Docker container in detached mode. This means that the Docker container will run in the background of your terminal and will not receive any input or display output.
-p 80:8000 -p 443:44300 This code segment specifies the allocation of the ports being used:
  • Port 8000 in the container is allocated to port 80 on the Docker host.
  • Port 44300 in the container is allocated to port 443 on the Docker host.
-v <path_to_workspace>:/ bluecat_gateway/ This variable maps a Docker workspace on your local machine. If you are using RHEL-compiled Docker, you must add :Z at the end of the path for any mapped volume.
Note: If using Docker volumes, the command would be: -v <Docker_volume_name>:/bluecat_gateway.
-v <path_to_mapped_log_directory>:/logs/ This variable maps a Docker logs volume (recommended) or a logs directory on your local machine.
-e BAM_IP=<your bam ip> The environment variable is used to specify the IP address of the BAM you wish to integrate with DNS Integrity Gateway. You must enter the BAM IP as an environment variable when running the DNS Integrity Gateway container for the first time.
--dns <ip address> (optional) Sets the IP address of the container's nameserver in the /etc/resolv.conf file. A process in the container, when resolving a hostname that is not included in /etc/hosts, will connect to this IP address on port 53 and search for name resolution services.
Note: If you do not include this option in the docker command, the IP address of the DNS server defaults to
--name bluecat_gateway Indicates the name of the container. By default, the name of the container is bluecat_gateway; however, this can be changed to reflect the needs of your environment.<version> Refers to the DNS Integrity Gateway image tag from which the container will be created. If the image has already been pulled and is available locally, the container will be created from that image. If the image is not available locally, it will be pulled from the cloud registry.
Table. Common Docker commands
Command Description
docker login <repository domain> Specify login credentials for a specific repository.
docker pull image_name Download a particular image (from specified repository sources).
docker images List all images present locally.
docker rmi <image_name|image_id> Remove the image.
docker ps List all running containers.
docker ps -a List all containers
docker run [options] <image_name|image_id> Run the docker image with specified options.
docker stop <container_name|container_id> Stop a running container.
docker rm <container_name|container_id> Remove a stopped container.
docker logs Look at logs for a running or stopped container.
docker kill Kill one or more running containers.
docker cp <container:path_to_file> <dest_path> Copy the file from inside the container to your local host machine.
docker restart <container> Restart the container.
docker rename <container> <new name> Rename the container.
docker exec -it <container name> bash Runs an interactive bash shell on a running container.
Table. Docker Flags
Command Description
docker run -t Allocate a pseudo-tty.
docker run -d Run container in detached mode.
docker run -p Specify port mapping.
docker run -v Map a volume.