如何通过Consul Connect将Wordpress服务连接到MariaDB服务？

问题描述

通过Consul Connect连接到MariaDB时遇到严重问题。

我使用的是游牧到创建与代理服务，具有下列作业定义：

job "wordpress" {
  type = "service"
  datacenters = ["dc1"]

  group "server" {
    network {
      mode = "bridge"
      port "http" {
        static = 8080
        to = 80
      }
    }

    task "server" {
      driver = "docker"

      config {
        image = "wordpress"
      }
      
      env {
        WORDPRESS_DB_HOST       = "${NOMAD_UPSTREAM_ADDR_database}"
        WORDPRESS_DB_USER       = "exampleuser"
        WORDPRESS_DB_PASSWORD   = "examplepass"
        WORDPRESS_DB_NAME       = "exampledb"
      }

      resources {
        cpu     = 100
        memory  = 64
        network {
          mbits = 10
        }
      }
    }

    service {
      name = "wordpress"
      tags = ["production","wordpress"]
      port = "http"

      connect {
        sidecar_service {
          proxy {
            upstreams {
              destination_name  = "database"
              local_bind_port   = 3306
            }
          }
        }
      }
    }
  }

  group "database" {
    network {
      mode = "bridge"
      port "db" {
        to = 3306
      }
    }

    task "database" {
      driver = "docker"

      config {
        image = "mariadb"
      }

      env {
        MYSQL_RANDOM_ROOT_PASSWORD  = "yes"
        MYSQL_INITDB_SKIP_TZINFO    = "yes"
        MYSQL_DATABASE              = "exampledb"
        MYSQL_USER                  = "exampleuser"
        MYSQL_PASSWORD              = "examplepass"
      }

      resources {
        cpu     = 100
        memory  = 128
        network {
          mbits = 10
        }
      }
    }

    service {
      name = "database"
      tags = ["production","mariadb"]
      port = "db"

      connect {
        sidecar_service {}
      }
    }
  }
}

但是，服务器似乎无法访问数据库。

MySQL Connection Error: (2006) MySQL server has gone away
[25-Aug-2020 10:46:53 UTC] PHP Warning:  mysqli::__construct(): Error while reading greeting packet. PID=187 in Standard input code on line 22
[25-Aug-2020 10:46:53 UTC] PHP Warning:  mysqli::__construct(): (HY000/2006): MySQL server has gone away in Standard input code on line 22

MySQL Connection Error: (2006) MySQL server has gone away

WARNING: unable to establish a database connection to '127.0.0.1:3306'
  continuing anyways (which might have unexpected results)

服务器和数据库代理的日志表明正在发生某种TLS问题，但是我不知道如何解决此问题。

服务器代理日志

[2020-08-25 12:20:35.841][18][debug][filter] [source/common/tcp_proxy/tcp_proxy.cc:344] [C1229] Creating connection to cluster database.default.dc1.internal.0198bec5-d0b4-332c-973e-372808379192.consul
[2020-08-25 12:20:35.841][18][debug][pool] [source/common/tcp/conn_pool.cc:82] creating a new connection
[2020-08-25 12:20:35.841][18][debug][pool] [source/common/tcp/conn_pool.cc:362] [C1230] connecting
[2020-08-25 12:20:35.841][18][debug][connection] [source/common/network/connection_impl.cc:704] [C1230] connecting to 172.29.168.233:29307
[2020-08-25 12:20:35.841][18][debug][connection] [source/common/network/connection_impl.cc:713] [C1230] connection in progress
[2020-08-25 12:20:35.841][18][debug][pool] [source/common/tcp/conn_pool.cc:108] queueing request due to no available connections
[2020-08-25 12:20:35.841][18][debug][main] [source/server/connection_handler_impl.cc:280] [C1229] new connection
[2020-08-25 12:20:35.841][18][trace][connection] [source/common/network/connection_impl.cc:458] [C1229] socket event: 2
[2020-08-25 12:20:35.841][18][trace][connection] [source/common/network/connection_impl.cc:543] [C1229] write ready
[2020-08-25 12:20:35.841][18][trace][connection] [source/common/network/connection_impl.cc:458] [C1230] socket event: 2
[2020-08-25 12:20:35.841][18][trace][connection] [source/common/network/connection_impl.cc:543] [C1230] write ready
[2020-08-25 12:20:35.841][18][debug][connection] [source/common/network/connection_impl.cc:552] [C1230] connected
[2020-08-25 12:20:35.841][18][debug][connection] [source/extensions/transport_sockets/tls/ssl_socket.cc:168] [C1230] handshake error: 2
[2020-08-25 12:20:35.842][18][trace][connection] [source/common/network/connection_impl.cc:458] [C1230] socket event: 3
[2020-08-25 12:20:35.842][18][trace][connection] [source/common/network/connection_impl.cc:543] [C1230] write ready
[2020-08-25 12:20:35.842][18][debug][connection] [source/extensions/transport_sockets/tls/ssl_socket.cc:168] [C1230] handshake error: 5
[2020-08-25 12:20:35.842][18][debug][connection] [source/extensions/transport_sockets/tls/ssl_socket.cc:201] [C1230] 
[2020-08-25 12:20:35.842][18][debug][connection] [source/common/network/connection_impl.cc:190] [C1230] closing socket: 0
[2020-08-25 12:20:35.842][18][debug][pool] [source/common/tcp/conn_pool.cc:123] [C1230] client disconnected

数据库代理日志

[2020-08-25 12:26:07.093][15][debug][filter] [source/common/tcp_proxy/tcp_proxy.cc:201] [C927] new tcp proxy session
[2020-08-25 12:26:07.093][15][trace][connection] [source/common/network/connection_impl.cc:290] [C927] readDisable: enabled=true disable=true
[2020-08-25 12:26:07.093][15][debug][filter] [source/common/tcp_proxy/tcp_proxy.cc:344] [C927] Creating connection to cluster local_app
[2020-08-25 12:26:07.093][15][debug][pool] [source/common/tcp/conn_pool.cc:82] creating a new connection
[2020-08-25 12:26:07.093][15][debug][pool] [source/common/tcp/conn_pool.cc:362] [C928] connecting
[2020-08-25 12:26:07.093][15][debug][connection] [source/common/network/connection_impl.cc:704] [C928] connecting to 127.0.0.1:26344
[2020-08-25 12:26:07.093][15][debug][connection] [source/common/network/connection_impl.cc:713] [C928] connection in progress
[2020-08-25 12:26:07.093][15][debug][pool] [source/common/tcp/conn_pool.cc:108] queueing request due to no available connections
[2020-08-25 12:26:07.093][15][debug][main] [source/server/connection_handler_impl.cc:280] [C927] new connection
[2020-08-25 12:26:07.093][15][trace][connection] [source/common/network/connection_impl.cc:458] [C927] socket event: 2
[2020-08-25 12:26:07.093][15][trace][connection] [source/common/network/connection_impl.cc:543] [C927] write ready
[2020-08-25 12:26:07.093][15][debug][connection] [source/extensions/transport_sockets/tls/ssl_socket.cc:168] [C927] handshake error: 5
[2020-08-25 12:26:07.093][15][debug][connection] [source/extensions/transport_sockets/tls/ssl_socket.cc:201] [C927] 
[2020-08-25 12:26:07.093][15][debug][connection] [source/common/network/connection_impl.cc:190] [C927] closing socket: 0
[2020-08-25 12:26:07.093][15][debug][pool] [source/common/tcp/conn_pool.cc:204] canceling pending request
[2020-08-25 12:26:07.093][15][debug][pool] [source/common/tcp/conn_pool.cc:212] canceling pending connection
[2020-08-25 12:26:07.093][15][debug][connection] [source/common/network/connection_impl.cc:101] [C928] closing data_to_write=0 type=1
[2020-08-25 12:26:07.093][15][debug][connection] [source/common/network/connection_impl.cc:190] [C928] closing socket: 1
[2020-08-25 12:26:07.093][15][debug][pool] [source/common/tcp/conn_pool.cc:123] [C928] client disconnected
[2020-08-25 12:26:07.093][15][trace][main] [source/common/event/dispatcher_impl.cc:158] item added to deferred deletion list (size=1)
[2020-08-25 12:26:07.093][15][debug][main] [source/server/connection_handler_impl.cc:80] [C927] adding to cleanup list
[2020-08-25 12:26:07.093][15][trace][main] [source/common/event/dispatcher_impl.cc:158] item added to deferred deletion list (size=2)
[2020-08-25 12:26:07.093][15][trace][main] [source/common/event/dispatcher_impl.cc:76] clearing deferred deletion list (size=2)
[2020-08-25 12:26:07.093][15][debug][pool] [source/common/tcp/conn_pool.cc:236] [C928] connection destroyed

解决方法

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