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158 lines
3.7 KiB
Markdown
158 lines
3.7 KiB
Markdown
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# limitations under the License.
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[English](stand-alone.md)
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## Stand-alone mode
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开启 Stand-alone 模式的 APISIX 节点，将不再使用默认的 etcd 作为配置中心。
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这种方式比较适合两类用户：
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1. kubernetes(k8s)：声明式 API 场景，通过全量 yaml 配置来动态更新修改路由规则。
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2. 不同配置中心：配置中心的实现有很多，比如 Consule 等，使用全量 yaml 做中间转换桥梁。
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APISIX 节点服务启动后会立刻加载 `conf/apisix.yaml` 文件中的路由规则到内存，并且每间隔一定时间
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（默认 1 秒钟），都会尝试检测文件内容是否有更新，如果有更新则重新加载规则。
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*注意*：重新加载规则并更新时，均是内存热更新，不会有工作进程的替换过程，是个热更新过程。
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通过设置 `conf/config.yaml` 中的 `apisix.config_center` 选项为 `yaml` 表示启
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用 Stand-alone 模式。
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参考下面示例：
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```yaml
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apisix:
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# ...
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config_center: yaml # etcd: use etcd to store the config value
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# yaml: fetch the config value from local yaml file `/your_path/conf/apisix.yaml`
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# ...
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```
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此外由于目前 Admin API 都是基于 etcd 配置中心解决方案，当开启 Stand-alone 模式后，
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Admin API 实际将不起作用。
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## 如何配置规则
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所有的路由规则均存放在 `conf/apisix.yaml` 这一个文件中，APISIX 会以每秒（默认）频率检查文件是否有变化，如果有变化，则会检查文件末尾是否能找到 `#END` 结尾，找到后则重新加载文件更新到内存。
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下面就是个最小的示例：
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```yaml
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routes:
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-
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uri: /hello
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upstream:
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nodes:
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"127.0.0.1:1980": 1
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type: roundrobin
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#END
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```
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*注意*：如果`conf/apisix.yaml`末尾不能找到 `#END`，那么 APISIX 将不会加载这个文件规则到内存。
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#### 配置 Router
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单个 Router：
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```yaml
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routes:
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-
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uri: /hello
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upstream:
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nodes:
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"127.0.0.1:1980": 1
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type: roundrobin
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#END
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```
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多个 Router：
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```yaml
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routes:
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-
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uri: /hello
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upstream:
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nodes:
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"127.0.0.1:1980": 1
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type: roundrobin
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-
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uri: /hello2
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upstream:
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nodes:
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"127.0.0.1:1981": 1
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type: roundrobin
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#END
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```
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#### 配置 Router + Service
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```yml
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routes:
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-
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uri: /hello
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service_id: 1
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services:
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-
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id: 1
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upstream:
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nodes:
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"127.0.0.1:1980": 1
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type: roundrobin
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#END
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```
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#### 配置 Router + Upstream
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```yml
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routes:
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-
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uri: /hello
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upstream_id: 1
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upstreams:
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-
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id: 1
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nodes:
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"127.0.0.1:1980": 1
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type: roundrobin
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#END
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```
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#### 配置 Router + Service + Upstream
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```yml
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routes:
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-
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uri: /hello
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service_id: 1
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services:
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-
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id: 1
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upstream_id: 2
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upstreams:
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-
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id: 2
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nodes:
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"127.0.0.1:1980": 1
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type: roundrobin
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#END
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```
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