Docker Meetup: Docker Networking 1.11 with Madhu Venugopal
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In this talk, Madhu Venugopal will present Docker Networking & Service Discovery features shipped in 1.11 and new Experimental VLAN network drivers introduced in 1.11.
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Docker Networking: Control plane and Data plane
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Docker 101: Introduction to Docker
Docker 101: Introduction to DockerDocker, Inc. This document provides an introduction to Docker. It discusses why Docker is useful for isolation, being lightweight, simplicity, workflow, and community. It describes the Docker engine, daemon, and CLI. It explains how Docker Hub provides image storage and automated builds. It outlines the Docker installation process and common workflows like finding images, pulling, running, stopping, and removing containers and images. It promotes Docker for building local images and using host volumes.
containerd summit - Deep Dive into containerd
containerd summit - Deep Dive into containerdDocker, Inc. containerd is an industry-standard core container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision, low-level storage and network attachments, etc..
containerd is designed to be embedded into a larger system, rather than being used directly by developers or end-users.
containerd includes a daemon exposing gRPC API over a local UNIX socket. The API is a low-level one designed for higher layers to wrap and extend. It also includes a barebone CLI (ctr) designed specifically for development and debugging purpose. It uses runC to run containers according to the OCI specification. The code can be found on GitHub, and here are the contribution guidelines.
containerd is based on the Docker Engine’s core container runtime to benefit from its maturity and existing contributors.
containerd and CRI
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Driving containerd operations with gRPCDocker, Inc. containerd uses gRPC and protocol buffers to define its API. gRPC provides benefits like code generation, performance, and common standards. The containerd gRPC services include Execution, Shim, and Content, which define methods like Create, Start, and List. Protocol buffer definitions generate client and server code in various languages. Developers can build clients and extend containerd with new services. The containerd API is under active development and aims to stabilize before the 1.0 release while allowing backwards compatibility through gRPC versioning.
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These slides were used during the OpenStack meetup in Auckland in May 2016, hosted by Catalyst IT.
georchestra SDI: Project Status Report
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* how the project moved from tainted to generic artifacts (war files, debian packages, docker images)
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Deploying 3 times a day without a downtime @ Rocket Tech Summit in Berlin
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moscmy2016: Extending Docker
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- Docker plugins allow extending Docker's capabilities by running external processes that communicate with the Docker daemon.
- Examples of plugin types are volumes, networks, authorization. A volume plugin enables integration with external storage, a network plugin supports different networking technologies.
- The document demonstrates setting up an image whitelist Docker plugin that checks images against a whitelist before allowing them to run.
- Implementing the plugin involves creating a client to communicate with Docker's API, parsing a cron
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Introduction to Docker - Learning containerization XP conference 2016
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Docker command
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Deeper Dive in Docker Overlay Networks
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JDO 2019: Tips and Tricks from Docker Captain - Łukasz Lach
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Deeper dive in Docker Overlay Networks
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- 2. Docker 1.9.0 • New top-level UX & API : docker network • Support for multiple micro-segmented networks • Built-in multihost networking using VXLAN based overlay driver • Support for third party network plugins • Ability to dynamically connect containers to multiple networks • Pluggable and user-defined IP address mgmt • Integration with Docker Swarm
- 3. Docker 1.10.0 • Service Discovery using embedded DNS • IP stability using `--ip / --ipv6` option • Network-scoped Alias support • `—link` support in user-defined networks • Network isolation using `--internal` option • Multi-host networking in all supported kernels (3.10+) • Integration with Docker Compose
- 4. Docker 1.11.0 • Built-in load-balancing using DNS-RR • Service Discovery for IPv6 (AAAA Records) • Experimental Macvlan & IPVlan drivers
- 7. eth0 eth0 eth0 docker0 docker0 docker0 C1 eth0 eth0 C2 eth0 C3 C1 eth0 eth0 C2 eth0 C3 C1 eth0 eth0 C2 eth0 C3 ToR switch / Hypervisor switch / … iptables : NAT / port-mapping iptables : NAT / port-mapping iptables : NAT / port-mapping
- 9. Host1 : $ docker network create -d bridge -o com.docker.network.bridge.name=brnet brnet $ docker run --net=brnet -it busybox ifconfig eth0 brnet 172.18.0.1 ToR switch / Hypervisor switch / … eth0 C1 Host1 eth0 C2 eth0 C3 iptables : NAT / port-mapping eth0 brnet 172.18.0.1 eth0 C4 Host2 eth0 C5 eth0 C6 iptables : NAT / port-mapping eth0 brnet 172.18.0.1 eth0 C7 Host3 eth0 C8 eth0 C9 iptables : NAT / port-mapping Host2 : $ docker network create -d bridge -o com.docker.network.bridge.name=brnet brnet $ docker run --net=brnet -it busybox ifconfig Host3 : $ docker network create -d bridge -o com.docker.network.bridge.name=brnet brnet $ docker run --net=brnet -it busybox ifconfig
- 10. Use-case 3 Docker Overlay Network
- 11. eth0 C1 eth1 eth1 C2 eth1 C3 ToR switch / Hypervisor switch / … docker0docker_gw eth0 C1 eth1 eth1 C2 eth1 C3 docker0docker_gw eth0 C1 eth1 eth1 C2 eth1 C3 docker0docker_gw ov-net1 ov-net1 ov-net1 VXLAN-VNI 100 VXLAN-VNI 100 eth0 eth0 eth0 eth0 eth0 eth0 eth0 eth0 eth0 VXLAN-VNI 100 iptables : NAT / port-mapping iptables : NAT / port-mapping iptables : NAT / port-mapping
- 12. Use-case 4 Plumbed to underlay vlan with built-in IPAM Experimental vlan drivers (macvlan & ipvlan) https://github.com/docker/docker/blob/master/experimental/vlan-networks.md
- 13. # vlan 10 (eth0.10) $ docker network create -d macvlan —subnet=10.1.10.0/24 —gateway=10.1.10.1 -o parent=eth0.10 mcvlan10 $ docker run --net=mcvlan10 -it --rm alpine /bin/sh # vlan 20 (eth0.20) $ docker network create -d macvlan —subnet=10.1.20.0/24 —gateway=10.1.20.1 -o parent=eth0.20 mcvlan20 $ docker run --net=mcvlan20 -it --rm alpine /bin/sh # vlan 30 (eth0.30) $ docker network create -d macvlan —subnet=10.1.30.0/24 —gateway=10.1.30.1 -o parent=eth0.30 mcvlan30 $ docker run --net=mcvlan30 -it --rm alpine /bin/sh
- 14. User Guide https://docs.docker.com/engine/userguide/networking/dockernetworks/ Docker overlay networking https://docs.docker.com/engine/userguide/networking/get-started-overlay http://container42.com/2015/10/30/docker-networking-reborn/ Experimental docker vlan drivers : https://github.com/docker/docker/blob/master/experimental/vlan- networks.md Resources