envoyをstandaloneで動かしてみる

config.yml

# CentOS7へのインストール
#   https://www.getenvoy.io/install/envoy/centos/
# config参考
#   https://qiita.com/TokyoYoshida/items/8f614dc5051926bda605
#   https://i-beam.org/2019/02/03/envoy-static-load-balancer/
# このコンフィグを、下記コマンドで動かそうとすると、
#   $ envoy --config-yaml  config.yml
#    error initializing configuration '': Unable to convert YAML as JSON: config.yml
# と言われてしまったので、jsonに変換して動かす。
#   $ envoy -c config.json

admin:
  access_log_path: /tmp/admin_access.log
  address:
    socket_address:
      address: 0.0.0.0
      port_value: 9901

static_resources:
  listeners:
    - name: listener_0
      address:
        socket_address:
          address: 0.0.0.0
          port_value: 3306
      filter_chains:
        - filters:
          - name: envoy.filters.network.mysql_proxy
            typed_config:
              "@type": type.googleapis.com/envoy.config.filter.network.mysql_proxy.v1alpha1.MySQLProxy
              stat_prefix: mysql
          - name: envoy.filters.network.tcp_proxy
            typed_config:
              "@type": type.googleapis.com/envoy.config.filter.network.tcp_proxy.v2.TcpProxy
              stat_prefix: tcp
              cluster: mysql
  clusters:
    - name: mysql
      type: strict_dns
      connect_timeout: 1s
      health_checks:
        - healthy_threshold: 3
          interval: 5s
          tcp_health_check: {}
          timeout: 1s
          unhealthy_threshold: 3
      load_assignment:
        cluster_name: mysql
        endpoints:
          - lb_endpoints:
            - endpoint:
                address:
                  socket_address:
                    address: # ここにmysqlのIPアドレスを記載する
                    port_value: 3306