Prior Art
- FreeBSD jails (2000)
- Solaris Containers (2004)
- OpenVZ (2005)
- LXC (?)
Presenter Notes
What's Old
- libvirt
- LXC
- systemd-nspawn
Presenter Notes
What's New
- UFS (brought in)
- API
- Version Management(Dockerfile, Registry)
Presenter Notes
Image
- aufs、devicemapper、btrfs
- /var/lib/docker/
Presenter Notes
Container
- Running 'image' with writable layer.
Presenter Notes
Repository
- Store images, like Git Repo.
Presenter Notes
CoreOS
Based on Chrome OS, a minimal Linux-based operating system aimed at large-scale server deployments.
- Low resource requirement (114 MB)
- Consistent update
- Every program in single container
Presenter Notes
Etcd
A highly available, distributed key value store.
- Simple, curl-able API (HTTP + JSON)
- Optional SSL client cert authentication
- Benchmarked 1000s of writes/s per instance
- Properly distributed using Raft protocol
- Keys support TTL
- Atomic test and set
- Easily listen for changes to a prefix via HTTP long-polling
Presenter Notes
consul
Tool for service discovery, monitoring and configuration.
- Service Discovery
- Health Checking
- Key/Value Storage
- Multi-Datacenter
Presenter Notes
Fleet
CoreOS's cluster management system. On top of systemd, to manage services on server in cluster transparently.
1 [Unit]
2 Description=My Service
3 Requires=docker.service
4 After=docker.service
5
6 [Service]
7 ExecStart=/usr/bin/docker run busybox /bin/sh -c "while true; do echo Hello World; sleep 1; done"
8
9 [Install]
10 WantedBy=multi-user.target
Presenter Notes
Fig
Fast, isolated development environments using Docker.
1 web:
2 build: .
3 command: python app.py
4 links:
5 - db
6 ports:
7 - "8000:8000"
8 db:
9 image: postgres
Presenter Notes
Libswarm
- A toolkit for composing network services.
- Or a communication middleware