注册配置治理 Eureka协议使用命名空间

介绍
北极星对 Eureka 的 API 进行了全兼容，由于 Eureka 默认不支持命名空间，北极星拓展了一个请求头x-namespace来支持命名空间的隔离。当有客户端的请求到达服务端，服务端将检查这个 header：
如果 header 存在，则使用这个 header 标识的命名空间进行服务注册发现的隔离。
如果 header 不存在或者值为空，则使用默认的命名空间default。
示例
下面通过 eureka 协议的api进行说明。向命名空间ns1下注册服务EUREKA-DEMO-PROVIDER的一个实例，实例端口为18081。
curl -X 'POST' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER' \\
-H "Content-type: application/json" \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-d '{
    "instance": {
        "instanceId": "10.91.80.100:eureka-demo-provider:18081",
        "hostName": "10.91.80.100",
        "app": "EUREKA-DEMO-PROVIDER",
        "ipAddr": "10.91.80.100",
        "status": "UP",
        "overriddenStatus": "UNKNOWN",
        "port": {
            "$": 18081,
            "@enabled": "true"
        },
        "securePort": {
            "$": 443,
            "@enabled": "false"
        },
        "countryId": 1,
        "dataCenterInfo": {
            "@class": "com.netflix.appinfo.InstanceInfo$DefaultDataCenterInfo",
            "name": "MyOwn"
        },
        "leaseInfo": {
            "renewalIntervalInSecs": 30,
            "durationInSecs": 90,
            "registrationTimestamp": 0,
            "lastRenewalTimestamp": 0,
            "evictionTimestamp": 0,
            "serviceUpTimestamp": 0
        },
        "metadata": {
            "management.port": "18081"
        },
        "homePageUrl": "http://10.91.80.100:18081/",
        "statusPageUrl": "http://10.91.80.100:18081/actuator/info",
        "healthCheckUrl": "http://10.91.80.100:18081/actuator/health",
        "vipAddress": "EUREKA-DEMO-PROVIDER",
        "secureVipAddress": "EUREKA-DEMO-PROVIDER",
        "isCoordinatingDiscoveryServer": "false",
        "lastUpdatedTimestamp": "1681266990026",
        "lastDirtyTimestamp": "1681266990889"
    }
}' \\
-v
向命名空间ns2下注册服务EUREKA-DEMO-PROVIDER的一个实例，实例端口为18082。
curl -X 'POST' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER' \\
-H "Content-type: application/json" \\
-H "Accept: application/json" \\
-H "x-namespace: ns2" \\
-d '{
    "instance": {
        "instanceId": "10.91.80.100:eureka-demo-provider:18082",
        "hostName": "10.91.80.100",
        "app": "EUREKA-DEMO-PROVIDER",
        "ipAddr": "10.91.80.100",
        "status": "UP",
        "overriddenStatus": "UNKNOWN",
        "port": {
            "$": 18082,
            "@enabled": "true"
        },
        "securePort": {
            "$": 443,
            "@enabled": "false"
        },
        "countryId": 1,
        "dataCenterInfo": {
            "@class": "com.netflix.appinfo.InstanceInfo$DefaultDataCenterInfo",
            "name": "MyOwn"
        },
        "leaseInfo": {
            "renewalIntervalInSecs": 30,
            "durationInSecs": 90,
            "registrationTimestamp": 0,
            "lastRenewalTimestamp": 0,
            "evictionTimestamp": 0,
            "serviceUpTimestamp": 0
        },
        "metadata": {
            "management.port": "18082"
        },
        "homePageUrl": "http://10.91.80.100:18082/",
        "statusPageUrl": "http://10.91.80.100:18082/actuator/info",
        "healthCheckUrl": "http://10.91.80.100:18082/actuator/health",
        "vipAddress": "EUREKA-DEMO-PROVIDER",
        "secureVipAddress": "EUREKA-DEMO-PROVIDER",
        "isCoordinatingDiscoveryServer": "false",
        "lastUpdatedTimestamp": "1681266990026",
        "lastDirtyTimestamp": "1681266990889"
    }
}' \\
-v
查询ns1下EUREKA-DEMO-PROVIDER的实例。
curl -X 'GET' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER' \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-v
## 返回18081端口实例
查询ns2下EUREKA-DEMO-PROVIDER的实例。
curl -X 'GET' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER' \\
-H "Accept: application/json" \\
-H "x-namespace: ns2" \\
-v
## 返回18082端口实例
如上所见，向不同命名空间下相同的服务名进行服务注册发现，已经通过命名空间进行隔离。
API 支持列表
注册服务实例
请求方法：PUT
路由：/eureka/apps/{appId}
示例：
curl -X 'POST' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER' \\
-H "Content-type: application/json" \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-d '{
    "instance": {
        "instanceId": "10.91.80.100:eureka-demo-provider:18081",
        "hostName": "10.91.80.100",
        "app": "EUREKA-DEMO-PROVIDER",
        "ipAddr": "10.91.80.100",
        "status": "UP",
        "overriddenStatus": "UNKNOWN",
        "port": {
            "$": 18081,
            "@enabled": "true"
        },
        "securePort": {
            "$": 443,
            "@enabled": "false"
        },
        "countryId": 1,
        "dataCenterInfo": {
            "@class": "com.netflix.appinfo.InstanceInfo$DefaultDataCenterInfo",
            "name": "MyOwn"
        },
        "leaseInfo": {
            "renewalIntervalInSecs": 30,
            "durationInSecs": 90,
            "registrationTimestamp": 0,
            "lastRenewalTimestamp": 0,
            "evictionTimestamp": 0,
            "serviceUpTimestamp": 0
        },
        "metadata": {
            "management.port": "18081"
        },
        "homePageUrl": "http://10.91.80.100:18081/",
        "statusPageUrl": "http://10.91.80.100:18081/actuator/info",
        "healthCheckUrl": "http://10.91.80.100:18081/actuator/health",
        "vipAddress": "EUREKA-DEMO-PROVIDER",
        "secureVipAddress": "EUREKA-DEMO-PROVIDER",
        "isCoordinatingDiscoveryServer": "false",
        "lastUpdatedTimestamp": "1681266990026",
        "lastDirtyTimestamp": "1681266990889"
    }
}' \\
-v
健康检查
请求方法：PUT
路由：/eureka/apps/{appId}/{instanceId}
示例：
curl -X 'PUT' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER/10.91.80.100:eureka-demo-provider:18081' \\
-H "x-namespace: ns1" \\
-v
取消注册
请求方法：DELETE
路由：/eureka/apps/{appId}/{instanceId}
示例：
curl -X 'DELETE' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER/10.91.80.100:eureka-demo-provider:18081' \\
-H "x-namespace: ns1" \\
-v
查询所有实例
请求方法：GET
路由：/eureka/apps
示例：
curl -X 'GET' 'http://127.0.0.1:8761/eureka/apps' \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-v
查询 delta 实例
请求方法：GET
路由：/eureka/apps/delta
示例：
curl -X 'GET' 'http://127.0.0.1:8761/eureka/apps/delta' \\
-H "Accept: application/json" \\
-v
查询某个服务下所有实例
请求方法：GET
路由：/eureka/apps/{appId}
示例：
curl -X 'GET' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER' \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-v
查询某个服务下某个实例
请求方法：GET
路由：/eureka/apps/{appId}/{instanceId}
示例：
curl -X 'GET' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER/10.91.80.100:eureka-demo-provider:18081' \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-v
查询某个实例
请求方法：GET
路由：/eureka/instance/{instanceId}
示例：
curl -X 'GET' 'http://127.0.0.1:8761/eureka/instance/10.91.80.100:eureka-demo-provider:18081' \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-v
查询 vip 下的所有实例
请求方法：GET
路由：/eureka/vips/{vip}
示例：
curl -X 'GET' 'http://127.0.0.1:8761/eureka/vips/EUREKA-DEMO-PROVIDER' \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-v
查询 secure vip 下的所有实例
请求方法：GET
路由：/eureka/svips/{svip}
示例
curl -X 'GET' 'http://127.0.0.1:8761/eureka/svips/EUREKA-DEMO-PROVIDER' \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-v
强制隔离实例
请求方法：PUT
路由：/eureka/apps/{appId}/{instanceId}/status
示例
curl -X 'PUT' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER/10.91.80.100:eureka-demo-provider:18081/status' \\
-H "x-namespace: ns1" \\
-v
关闭强制隔离
请求方法：DELETE
路由：/eureka/apps/{appId}/{instanceId}/status
示例
curl -X 'DELETE' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER/10.91.80.100:eureka-demo-provider:18081/status' \\
-H "x-namespace: ns1" \\
-v
更新元数据
请求方法：PUT
路由：/eureka/apps/{appId}/{instanceId}/metadata?{key}={value}
示例
curl -X 'PUT' 'http://127.0.0.1:8761/eureka/apps/EUREKA-DEMO-PROVIDER/10.91.80.100:eureka-demo-provider:18081/metadata?k=v' \\
-H "x-namespace: ns1" \\
-v
批量复制
请求方法：POST
路由：/eureka/peerreplication/batch
示例
curl -X 'POST' 'http://127.0.0.1:8761/eureka/peerreplication/batch' \\
-H "Content-type: application/json" \\
-H "Accept: application/json" \\
-H "x-namespace: ns1" \\
-d '{
    "replicationList":[
        {
            "appName": "EUREKA-DEMO-PROVIDER",
            "id": "10.91.80.100:eureka-demo-provider:18081",
            "lastDirtyTimestamp": 1681266990889,
            "overriddenStatus": "UNKNOWN",
            "status": "UP",
            "instanceInfo": {
                "instanceId": "10.91.80.100:eureka-demo-provider:18081",
                "hostName": "10.91.80.100",
                "app": "EUREKA-DEMO-PROVIDER",
                "ipAddr": "10.91.80.100",
                "status": "UP",
                "overriddenStatus": "UNKNOWN",
                "port": {
                    "$": 18081,
                    "@enabled": "true"
                },
                "securePort": {
                    "$": 443,
                    "@enabled": "false"
                },
                "countryId": 1,
                "dataCenterInfo": {
                    "@class": "com.netflix.appinfo.InstanceInfo$DefaultDataCenterInfo",
                    "name": "MyOwn"
                },
                "leaseInfo": {
                    "renewalIntervalInSecs": 30,
                    "durationInSecs": 90,
                    "registrationTimestamp": 0,
                    "lastRenewalTimestamp": 0,
                    "evictionTimestamp": 0,
                    "serviceUpTimestamp": 0
                },
                "metadata": {
                    "management.port": "18081"
                },
                "homePageUrl": "http://10.91.80.100:18081/",
                "statusPageUrl": "http://10.91.80.100:18081/actuator/info",
                "healthCheckUrl": "http://10.91.80.100:18081/actuator/health",
                "vipAddress": "EUREKA-DEMO-PROVIDER",
                "secureVipAddress": "EUREKA-DEMO-PROVIDER",
                "isCoordinatingDiscoveryServer": "false",
                "lastUpdatedTimestamp": "1681266990026",
                "lastDirtyTimestamp": "1681266990889"
            },
            "action": "Register"
          }
﻿
    ]
}' \\
-v
﻿
﻿
Eureka协议使用命名空间

本页目录：

介绍

示例

API 支持列表

注册服务实例

健康检查

取消注册

查询所有实例

查询 delta 实例

查询某个服务下所有实例

查询某个服务下某个实例

查询某个实例

查询 vip 下的所有实例

查询 secure vip 下的所有实例

强制隔离实例

关闭强制隔离

更新元数据

批量复制
