通过registrator自动发现容器内的服务，注册到consul，通过consul -template动态修改nginx配置文件实现动态负载。
docker-compose.yml:
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| version: '3'
services:
consul:
image: consul
environment:
SERVICE_8500_NAME: "consul-ui"
SERVICE_8500_TAGS: "consul,http,ui"
ports:
- 8500:8500
network_mode: host
volumes:
- /data/consul/data:/consul/data
- ./conf.d:/consul/config
command: "agent -server -bootstrap-expect 1 -ui -disable-host-node-id -client 0.0.0.0 -bind 172.17.0.13"
registrator:
image: gliderlabs/registrator
depends_on:
- consul
volumes:
- /var/run/docker.sock:/tmp/docker.sock
network_mode: host
environment:
CONSUL_HTTP_TOKEN: ${CONSUL_HTTP_TOKEN}
command: -internal consul://127.0.0.1:8500
nginx-consul:
image: nginx-consul:alpine
build: .
depends_on:
- consul
- registrator
ports:
- 80:80
network_mode: host
volumes:
- ./files/nginx.conf.ctmpl:/etc/nginx/nginx.conf.ctmpl
environment:
HOST_TYPE: ${HOST_TYPE}
CONSUL_HTTP_TOKEN: ${CONSUL_HTTP_TOKEN}
command: -consul-addr=127.0.0.1:8500 -wait=5s -template /etc/nginx/nginx.conf.ctmpl:/etc/nginx/conf.d/app.conf:/etc/nginx/nginx.sh
|
Dockerfile:
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| FROM nginx:alpine
RUN apk update && \
apk add --no-cache unzip
ENV PACKAGE consul-template_0.20.0_linux_amd64.zip
ADD files/nginx.conf files/nginx.conf.ctmpl files/nginx.sh files/${PACKAGE} /etc/nginx/
RUN unzip /etc/nginx/${PACKAGE} -d /usr/bin && \
chmod +x /usr/bin/consul-template && \
rm -f /etc/nginx/${PACKAGE} && \
chmod +x /etc/nginx/nginx.sh && \
apk del unzip
WORKDIR /etc/nginx
ENTRYPOINT ["/usr/bin/consul-template"]
|
conf.d/acl.json:
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| [root@VM_0_13_centos nginx-consul]
{
"acl_datacenter": "dc1",
"acl_master_token": "xxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"acl_agent_token": "xxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxxx",
"acl_default_policy": "deny",
"acl_down_policy": "extend-cache"
}
|
