registrator와 confd를 이용한 도커 서비스 연동에 대한 슬라이드입니다.

1. Jan 26, 2015
by @subicura (Chungsub Kim)
Automatic Docker Service Announcement
with registrator and confd

2. before

3. after

4. container is awesome!!
but
update some(like nginx) setting manually

5. Static Configuration

6. how to update
a website running in a docker container
with no downtime
automatically

8. Dynamic Configuration

9. confd
registrator
etcd
CoreOS
Manage local application configuration files using templates
and data from etcd or consul
A highly-available key value store for shared configuration
and service discovery
Service registry bridge for Docker
Minimal, modern operating system.

10. Clustered by defaultOptimized for containers

11. A highly-available key value store
/services/web/web_1 172.17.8.101:49155
valuekey
directory
*watch / TTL

12. confd
written in Go
etcd / Consul support
template resource config (TOML)
source template

13. registrator
automatically register/deregisters services
published ports and metadata
Consul/etcd/SkyDNS2
support TTL
<registry-uri-path>/<service-name>/<service-id> = <ip>:<port>

14. DEMO

15. nginx.conf.tmpl
{{ range $dir := lsdir "/services" }}
upstream backend_{{ base $dir }} {
{{ $custdir := printf "/services/%s/*" $dir }}{{ range getvs $custdir }}
server {{.}};
{{ end }}
}
server {
listen 80;
server_name {{ base $dir }}.sample.com;
location / {
include /etc/nginx/proxy_params;
proxy_pass http://backend_{{base $dir}};
}
}
{{end}}

16. Link
• http://coreos.com
• https://github.com/kelseyhightower/confd
• https://github.com/progrium/registrator
• https://github.com/subicura/nginx-confd

17. THANK YOU