getHealth

​

参数

​

响应

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代码示例

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基本请求

curl https://fra.rpc.orbitflare.com?api_key=YOUR-API-KEY -X POST -H "Content-Type: application/json" -d '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "getHealth"
}'

​

替代 HTTP GET 请求

curl https://fra.rpc.orbitflare.com?api_key=YOUR-API-KEY/health

​

使用 web3.js

import { Connection } from '@solana/web3.js';

const connection = new Connection('https://fra.rpc.orbitflare.com?api_key=YOUR-API-KEY');

const health = await connection.getHealth();
console.log('Node health:', health);

// Example: Check if node is healthy
const isHealthy = health === 'ok';
if (!isHealthy) {
  console.warn('Node is not healthy:', health);
}

​

注意事项

1. 此方法通常用于负载均衡器健康检查
2. HTTP GET 端点 /health 提供相同的信息
3. 如果节点落后于最新集群 slot 超过 HEALTH_CHECK_SLOT_DISTANCE 个 slot，则被视为 “behind”
4. “unknown” 状态通常表示节点正在启动或遇到问题

​

最佳实践

1. 使用此端点进行基本健康监控
2. 基于健康状态实现熔断器
3. 考虑使用更详细的方法获取特定健康指标：
   • getVersion 获取软件版本
   • getSlot 获取 slot 进度
   • getBlockHeight 获取区块高度
4. 为健康检查设置适当的超时
5. 处理所有可能的响应值

​

常见错误

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用例

1. 负载均衡器配置
   location /health {
     proxy_pass http://backend;
     proxy_next_upstream error timeout http_503;
   }
   
2. 健康监控
   async function monitorHealth(endpoint: string) {
     const connection = new Connection(endpoint);
     try {
       const health = await connection.getHealth();
       if (health !== 'ok') {
         alertNodeUnhealthy(endpoint, health);
       }
     } catch (error) {
       alertNodeError(endpoint, error);
     }
   }
   
3. 客户端负载均衡
   async function getHealthyEndpoint(endpoints: string[]) {
     for (const endpoint of endpoints) {
       const connection = new Connection(endpoint);
       try {
         const health = await connection.getHealth();
         if (health === 'ok') {
           return endpoint;
         }
       } catch (error) {
         continue;
       }
     }
     throw new Error('No healthy endpoints available');
   }
   
4. 系统状态仪表板
   interface NodeStatus {
     endpoint: string;
     health: string;
     lastChecked: Date;
   }
   
   async function updateDashboard(nodes: NodeStatus[]) {
     for (const node of nodes) {
       const connection = new Connection(node.endpoint);
       try {
         node.health = await connection.getHealth();
       } catch (error) {
         node.health = 'error';
       }
       node.lastChecked = new Date();
     }
     renderDashboard(nodes);
   }