Docker Swarm by Victor Vieux
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Transcript of Docker Swarm by Victor Vieux
Docker Swarm!
@aluzzardi - @vieux!
Demo!
us-west! us-east!
Docker!CLI!
Docker!CLI!
Docker!CLI!
=! RAM: 2GB!CPU: 1core!
Demo!
us-west! us-east!
=! RAM: 2GB!CPU: 1core!
Docker!CLI!
Docker!CLI!
Setup!
• Create a cluster:! $ swarm create
• Add nodes to a cluster:! $ swarm join --token=<token> --addr=<node_ip>
• List nodes in a cluster! $ swarm list --token=<token>
• Start Swarm!
$ swarm manage --token=<token> --addr=<swarm_ip> !!!!
Resource Management!
• Memory!" "$ docker run -m 1g …
• CPU!" "$ docker run -c 1 …
• Ports!" "$ docker run -p 80:80 …
• More to come, ex: network interfaces!!!!
Constraints!
• Standard constraints induced from docker info! docker run -e “constraint:operatingsystem=fedora” … " "docker run -e “constraint:storagedriver=aufs” …
• Custom constraints with host labels!" "docker -d --label “region=us-east” " "docker run -e “constraint:region=us-east” …
• Pin a container to a specific host!" "docker run –e “constraint:node=ubuntu-2” …
• More to come, ex: affinity!!!!
Rescheduling!
• Rescheduling policies; similar to `--restart`!
• Pending status!
!!!
Swarm scheduler!
2 steps:!!• 1- Apply filters to exclude nodes!
" "- ports!" "- labels!" "- health!
• 2- Use a strategy to pick the best node!" "- bin packing!" "- random!
!!
!!Contributions are welcome ☺ :!
!!!
http://github.com/docker/swarm!
@aluzzardi - @vieux!
Thank You.!