一、安装 Docker

yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum -y install docker-ce
systemctl daemon-reload && systemctl restart docker

二、安装 Httpbin

port: 80

docker run -itd -p 8081:80 --name httpbin-1 kennethreitz/httpbin

docker run -itd -p 8082:80 --name httpbin-2 kennethreitz/httpbin

docker run -itd -p 8083:80 --name httpbin-3 kennethreitz/httpbin

三、安装 Kong

sudo yum install -y wget jq
wget https://bintray.com/kong/kong-rpm/rpm -O bintray-kong-kong-rpm.repo
export major_version=`grep -oE '[0-9]+\.[0-9]+' /etc/redhat-release | cut -d "." -f1`
sed -i -e 's/baseurl.*/&\/centos\/'$major_version''/ bintray-kong-kong-rpm.repo
sudo mv bintray-kong-kong-rpm.repo /etc/yum.repos.d/
sudo yum install -y kong

四、配置 routes&services&plugins

cat > /tmp/apis.yaml <<EOF
_format_version: '1.1'

routes:
- name: route-httpbin
  protocols:
  - http
  paths:
  - /httpbin
  strip_path: true
  preserve_host: false
  regex_priority: 1
  service: service-httpbin

services:
- name: service-httpbin
  host: upstream-httpbin
  protocol: http
  port: 80
  connect_timeout: 60000
  read_timeout: 60000
  write_timeout: 60000
  retries: 5

upstreams:
- name: upstream-httpbin
  algorithm: round-robin
  algorithm: round-robin
  algorithm: round-robin
  healthchecks:
    active:
      https_verify_certificate: false
      type: http
      http_path: "/status/500"
      timeout: 30
      concurrency: 3
      healthy:
        http_statuses:
        - 200
        - 302
        - 301
        successes: 3
        interval: 0
      unhealthy:
        tcp_failures: 3
        timeouts: 3
        http_failures: 3
        http_statuses:
        - 429
        - 404
        - 500
        - 501
        - 502
        - 503
        - 504
        - 505
        interval: 0
    passive:
      type: http
      healthy:
        successes: 3
        http_statuses:
        - 200
        - 201
        - 202
        - 203
        - 204
        - 205
        - 206
        - 207
        - 208
        - 226
        - 300
        - 301
        - 302
        - 303
        - 304
        - 305
        - 306
        - 307
        - 308
      unhealthy:
        http_failures: 3
        tcp_failures: 3
        timeouts: 3
        http_statuses:
        - 429
        - 500
        - 503
    threshold: 0
  tags:
  - user-level
  - low-priority

targets:
- upstream: upstream-httpbin
  target: 127.0.0.1:8081
  weight: 100
- upstream: upstream-httpbin
  target: 127.0.0.1:8082
  weight: 100
- upstream: upstream-httpbin
  target: 127.0.0.1:8083
  weight: 100

EOF

五、启动 Kong

# 配置
cp /etc/kong/kong.conf.default /etc/kong/kong.conf

# 使用db-lessmode
sed -i "/^#database/i\database = off" /etc/kong/kong.conf
sed -i "/^#declarative_config/i\declarative_config = /tmp/apis.yaml" /etc/kong/kong.conf

# 启动
kong start

# 验证

curl http://127.0.0.1:8001 2>/dev/null | jq .configuration.database

curl http://127.0.0.1:8000/httpbin/ip

curl http://127.0.0.1:8000/httpbin/status/500

curl http://127.0.0.1:8000/httpbin/delay/80000


# 查看upstream健康状态
curl http://127.0.0.1:8001/upstreams/f348e902-7c2e-5cf7-a8d7-f30ec5e6b12d/health