add tcp-logger-cn.md (#1293)

* add tcp-logger-cn.md

* fix

doc/plugins/tcp-logger-cn.md

@@ -0,0 +1,101 @@
+<!--
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+-->
+
+# 摘要
+- [**定义**](#name)
+- [**属性列表**](#attributes)
+- [**如何开启**](#how-to-enable)
+- [**测试插件**](#test-plugin)
+- [**禁用插件**](#disable-plugin)
+
+
+## 定义
+
+`tcp-logger` 是用于将日志数据发送到TCP服务的插件。
+
+以实现将日志数据以JSON格式发送到监控工具或其它TCP服务的能力。
+
+## 属性列表
+
+|属性名称          |必选项  |描述|
+|---------     |--------|-----------|
+| host |必要的| TCP 服务的IP地址或主机名。|
+| port |必要的| 目标端口。|
+| timeout |可选的|发送数据超时间。|
+| tls |可选的|布尔值，用于控制是否执行SSL验证。|
+| tls_options |可选的|TLS 选项|
+
+
+## 如何开启
+
+1. 下面例子展示了如何为指定路由开启 `tcp-logger` 插件的。
+
+```shell
+curl http://127.0.0.1:9080/apisix/admin/consumers -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
+{
+    "username": "foo",
+    "plugins": {
+          "plugins": {
+                "tcp-logger": {
+                     "host": "127.0.0.1",
+                     "port": 5044,
+                     "tls": false
+                }
+           },
+          "upstream": {
+               "type": "roundrobin",
+               "nodes": {
+                   "127.0.0.1:1980": 1
+               }
+          },
+          "uri": "/hello"
+    }
+}'
+```
+
+## 测试插件
+
+* 成功的情况:
+
+```shell
+$ curl -i http://127.0.0.1:9080/hello
+HTTP/1.1 200 OK
+...
+hello, world
+```
+
+## 禁用插件
+
+
+想要禁用“tcp-logger”插件，是非常简单的，将对应的插件配置从json配置删除，就会立即生效，不需要重新启动服务：
+
+```shell
+$ curl http://127.0.0.1:2379/apisix/admin/routes/1 -X PUT -d value='
+{
+    "methods": ["GET"],
+    "uri": "/hello",
+    "plugins": {},
+    "upstream": {
+        "type": "roundrobin",
+        "nodes": {
+            "127.0.0.1:1980": 1
+        }
+    }
+}'
+```