mirror of
https://gitee.com/iresty/apisix.git
synced 2024-12-14 17:01:20 +08:00
104 lines
4.5 KiB
Markdown
104 lines
4.5 KiB
Markdown
<!--
|
||
#
|
||
# 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.
|
||
#
|
||
-->
|
||
|
||
# [English](../health-check.md)
|
||
|
||
## Upstream的健康检查
|
||
|
||
APISIX的健康检查使用[lua-resty-healthcheck](https://github.com/Kong/lua-resty-healthcheck)实现，你可以在upstream中使用它。
|
||
|
||
下面是一个检查检查的例子：
|
||
|
||
```shell
|
||
curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
|
||
{
|
||
"uri": "/index.html",
|
||
"plugins": {
|
||
"limit-count": {
|
||
"count": 2,
|
||
"time_window": 60,
|
||
"rejected_code": 503,
|
||
"key": "remote_addr"
|
||
}
|
||
},
|
||
"upstream": {
|
||
"nodes": {
|
||
"127.0.0.1:1980": 1,
|
||
"127.0.0.1:1970": 1
|
||
},
|
||
"type": "roundrobin",
|
||
"retries": 2,
|
||
"checks": {
|
||
"active": {
|
||
"http_path": "/status",
|
||
"host": "foo.com",
|
||
"healthy": {
|
||
"interval": 2,
|
||
"successes": 1
|
||
},
|
||
"unhealthy": {
|
||
"interval": 1,
|
||
"http_failures": 2
|
||
},
|
||
"req_headers": ["User-Agent: curl/7.29.0"]
|
||
},
|
||
"passive": {
|
||
"healthy": {
|
||
"http_statuses": [200, 201],
|
||
"successes": 3
|
||
},
|
||
"unhealthy": {
|
||
"http_statuses": [500],
|
||
"http_failures": 3,
|
||
"tcp_failures": 3
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}'
|
||
```
|
||
|
||
监控检查的配置内容在`checks`中，`checks`包含两个类型：`active` 和 `passive`，详情如下
|
||
|
||
* `active`: 要启动探活健康检查，需要在upstream配置中的 `checks.active` 添加如下配置项。
|
||
|
||
* `active.http_path`: 用于发现upstream节点健康可用的HTTP GET请求路径。
|
||
* `active.host`: 用于发现upstream节点健康可用的HTTP请求主机名。
|
||
|
||
`healthy`的阀值字段：
|
||
* `active.healthy.interval`: 健康的目标节点的健康检查间隔时间（以秒为单位），最小值为1。
|
||
* `active.healthy.successes`: 确定目标是否健康的成功次数，最小值为1。
|
||
|
||
`unhealthy`的阀值字段：
|
||
* `active.unhealthy.interval`: 针对不健康目标节点的健康检查之间的间隔（以秒为单位），最小值为1。
|
||
* `active.unhealthy.http_failures`: 确定目标节点不健康的http请求失败次数，最小值为1。
|
||
* `active.req_headers`: 其他请求标头。数组格式，可以填写多个标题。
|
||
|
||
* `passive`: 要启用被动健康检查，需要在upstream配置中的 `checks.passive` 添加如下配置项。
|
||
|
||
`healthy`的阀值字段：
|
||
* `passive.healthy.http_statuses`: 如果当前HTTP响应状态码是其中任何一个，则将upstream节点设置为 `healthy` 状态。否则，请忽略此请求。
|
||
* `passive.healthy.successes`: 如果upstream节点被检测成功（由 `passive.healthy.http_statuses` 定义）的次数超过 `successes` 次，则将该节点设置为 `healthy` 状态。
|
||
|
||
`unhealthy`的阀值字段：
|
||
* `passive.unhealthy.http_statuses`: 如果当前HTTP响应状态码是其中任何一个，则将upstream节点设置为 `unhealthy` 状态。否则，请忽略此请求。
|
||
* `passive.unhealthy.tcp_failures`: 如果TCP通讯失败次数超过 `tcp_failures` 次，则将upstream节点设置为 `unhealthy` 状态。
|
||
* `passive.unhealthy.timeouts`: 如果被动健康检查超时次数超过 `timeouts` 次，则将upstream节点设置为 `unhealthy` 状态。
|
||
* `passive.unhealthy.http_failures`: 如果被动健康检查的HTTP请求失败（由 `passive.unhealthy.http_statuses` 定义）的次数超过 `http_failures`次，则将upstream节点设置为 `unhealthy` 状态。
|