Crewmen - Multi-Constrained Container Orchestrator

Official Web Site - Crewmen

Installation

1. Install Go lang in your device
2. Open the command line in the project directory and execute go run main.go

Components

Task

• Specify metadata related to memory, CPU, disk etc.
• Restart policy - Orchestrator will take an action when a task fails according to the restart policy
• Specify metadata telated to container such as image.

Job

Scheduler

• Determine a set of candidate workers that can run a task
• Score the candidate workers from best to worst
• Pick the worker with the best score

Manager

• Accept user request to start/stop tasks
• Schedule tasks onto worker machines
• Monitor tasks, their states and worker machines which they run

Worker

• Run tasks as Docker containers.
• Accepting tasks to run from manager.
• Provide statistics to manager for task scheduling.
• Monitor the associated tasks and their states.

Cluster

CLI

Debug Docker

• Docker Image Pull Permissions - Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.40/containers/json: dial unix /var/run/docker.sock: connect: permission denied sudo chmod 666 /var/run/docker.sock

Go Helpers

How to download and import a new go module? go get MODULE_NAME