HAProxy 3.3

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Docker Swarm 部署模式 ​

HAProxy 可作为 Docker Swarm 的入口负载均衡层。

部署 HAProxy 服务 ​

bash
docker service create     --name haproxy     --publish published=80,target=80     --publish published=443,target=443     --config source=haproxy.cfg,target=/usr/local/etc/haproxy/haproxy.cfg     --constraint 'node.role == manager'     haproxy:latest

Docker Socket 动态发现 ​

lua
-- 动态更新后端服务
local f = io.popen("docker service ps -q web")
local services = f:read("*all")
f:close()

健康检查 ​

bash
docker service create     --health-cmd "curl -f http://localhost:8080/health || exit 1"     --health-interval 5s     --health-retries 3     nginx:alpine

滚动更新 ​

bash
docker service update --image haproxy:2.9 haproxy
docker service rollback haproxy