| --- |
| title: tcp-logger |
| keywords: |
| - Apache APISIX |
| - API 网关 |
| - Plugin |
| - TCP Logger |
| description: 本文介绍了 API 网关 Apache APISIX 如何使用 tcp-logger 插件将日志数据发送到 TCP 服务器。 |
| --- |
| |
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| |
| ## 描述 |
| |
| `tcp-logger` 插件可用于将日志数据发送到 TCP 服务器。 |
| |
| 该插件还实现了将日志数据以 JSON 格式发送到监控工具或其它 TCP 服务的能力。 |
| |
| ## 属性 |
| |
| | 名称 | 类型 | 必选项 | 默认值 | 有效值 | 描述 | |
| | ---------------- | ------- | ------ | ------ | ------- | ------------------------------------------------ | |
| | host | string | 是 | | | TCP 服务器的 IP 地址或主机名。 | |
| | port | integer | 是 | | [0,...] | 目标端口。 | |
| | timeout | integer | 否 | 1000 | [1,...] | 发送数据超时间。 | |
| | log_format | object | 否 | | | 以 JSON 格式的键值对来声明日志格式。对于值部分,仅支持字符串。如果是以 `$` 开头,则表明是要获取 [APISIX 变量](../apisix-variable.md) 或 [NGINX 内置变量](http://nginx.org/en/docs/varindex.html)。 | |
| | tls | boolean | 否 | false | | 用于控制是否执行 SSL 验证。 | |
| | tls_options | string | 否 | | | TLS 选项。 | |
| | include_req_body | boolean | 否 | | [false, true] | 当设置为 `true` 时,日志中将包含请求体。 | |
| | include_req_body_expr | array | 否 | | | 当 `include_req_body` 属性设置为 `true` 时的过滤器。只有当此处设置的表达式求值为 `true` 时,才会记录请求体。有关更多信息,请参阅 [lua-resty-expr](https://github.com/api7/lua-resty-expr) 。 | |
| | include_resp_body | boolean | 否 | false | [false, true]| 当设置为 `true` 时,日志中将包含响应体。 | |
| | include_resp_body_expr | array | 否 | | | 当 `include_resp_body` 属性设置为 `true` 时进行过滤响应体,并且只有当此处设置的表达式计算结果为 `true` 时,才会记录响应体。更多信息,请参考 [lua-resty-expr](https://github.com/api7/lua-resty-expr)。 | |
| |
| 该插件支持使用批处理器来聚合并批量处理条目(日志/数据)。这样可以避免插件频繁地提交数据,默认情况下批处理器每 `5` 秒钟或队列中的数据达到 `1000` 条时提交数据,如需了解批处理器相关参数设置,请参考 [Batch-Processor](../batch-processor.md#配置)。 |
| |
| ### 默认日志格式示例 |
| |
| ```json |
| { |
| "response": { |
| "status": 200, |
| "headers": { |
| "server": "APISIX/3.7.0", |
| "content-type": "text/plain", |
| "content-length": "12", |
| "connection": "close" |
| }, |
| "size": 118 |
| }, |
| "server": { |
| "version": "3.7.0", |
| "hostname": "localhost" |
| }, |
| "start_time": 1704527628474, |
| "client_ip": "127.0.0.1", |
| "service_id": "", |
| "latency": 102.9999256134, |
| "apisix_latency": 100.9999256134, |
| "upstream_latency": 2, |
| "request": { |
| "headers": { |
| "connection": "close", |
| "host": "localhost" |
| }, |
| "size": 59, |
| "method": "GET", |
| "uri": "/hello", |
| "url": "http://localhost:1984/hello", |
| "querystring": {} |
| }, |
| "upstream": "127.0.0.1:1980", |
| "route_id": "1" |
| } |
| ``` |
| |
| ## 插件元数据 |
| |
| | 名称 | 类型 | 必选项 | 默认值 | 有效值 | 描述 | |
| | ---------------- | ------- | ------ | ------------- | ------- | ------------------------------------------------ | |
| | log_format | object | 否 | | | 以 JSON 格式的键值对来声明日志格式。对于值部分,仅支持字符串。如果是以 `$` 开头。则表明获取 [APISIX 变量](../apisix-variable.md) 或 [NGINX 内置变量](http://nginx.org/en/docs/varindex.html)。 | |
| |
| :::info 注意 |
| |
| 该设置全局生效。如果指定了 `log_format`,则所有绑定 `tcp-logger` 的路由或服务都将使用该日志格式。 |
| |
| ::: |
| |
| 以下示例展示了如何通过 Admin API 配置插件元数据: |
| |
| :::note |
| |
| 您可以这样从 `config.yaml` 中获取 `admin_key` 并存入环境变量: |
| |
| ```bash |
| admin_key=$(yq '.deployment.admin.admin_key[0].key' conf/config.yaml | sed 's/"//g') |
| ``` |
| |
| ::: |
| |
| ```shell |
| curl http://127.0.0.1:9180/apisix/admin/plugin_metadata/tcp-logger \ |
| -H "X-API-KEY: $admin_key" -X PUT -d ' |
| { |
| "log_format": { |
| "host": "$host", |
| "@timestamp": "$time_iso8601", |
| "client_ip": "$remote_addr" |
| } |
| }' |
| ``` |
| |
| 配置完成后,你将在日志系统中看到如下类似日志: |
| |
| ```json |
| {"@timestamp":"2023-01-09T14:47:25+08:00","route_id":"1","host":"localhost","client_ip":"127.0.0.1"} |
| ``` |
| |
| ## 启用插件 |
| |
| 你可以通过以下命令在指定路由中启用该插件: |
| |
| ```shell |
| curl http://127.0.0.1:9180/apisix/admin/routes/1 \ |
| -H "X-API-KEY: $admin_key" -X PUT -d ' |
| { |
| "plugins": { |
| "tcp-logger": { |
| "host": "127.0.0.1", |
| "port": 5044, |
| "tls": false, |
| "batch_max_size": 1, |
| "name": "tcp logger" |
| } |
| }, |
| "upstream": { |
| "type": "roundrobin", |
| "nodes": { |
| "127.0.0.1:1980": 1 |
| } |
| }, |
| "uri": "/hello" |
| }' |
| ``` |
| |
| ## 测试插件 |
| |
| 现在你可以向 APISIX 发起请求: |
| |
| ```shell |
| curl -i http://127.0.0.1:9080/hello |
| ``` |
| |
| ``` |
| HTTP/1.1 200 OK |
| ... |
| hello, world |
| ``` |
| |
| ## 删除插件 |
| |
| 当你需要删除该插件时,可通过以下命令删除相应的 JSON 配置,APISIX 将会自动重新加载相关配置,无需重启服务: |
| |
| ```shell |
| curl http://127.0.0.1:9180/apisix/admin/routes/1 \ |
| -H "X-API-KEY: $admin_key" -X PUT -d ' |
| { |
| "methods": ["GET"], |
| "uri": "/hello", |
| "plugins": {}, |
| "upstream": { |
| "type": "roundrobin", |
| "nodes": { |
| "127.0.0.1:1980": 1 |
| } |
| } |
| }' |
| ``` |