GET http://localhost:8080/actuator/health
cache-control: no-cache

---
{"status":"UP"}
  

management:
  endpoint:
    health:
      show-details: always
  

@Component
public class ServiceAHealthIndicator implements HealthIndicator {
        private final String message_key = "Service A";
    @Override
    public Health health() {
        if (!isRunningServiceA()) {
            return Health.down().withDetail(message_key, "Not Available").build();
        }
        return Health.up().withDetail(message_key, "Available").build();
    }

    private Boolean isRunningServiceA() {
        Boolean isRunning = true;
        // Logic Skipped

        return isRunning;
    }
}
  

@Override
public Health health() {
    // check cache is available
    Cache cache = cacheManager.getCache("mycache");
    if (cache == null) {
        LOG.warn("Cache not available");
        return Health.down().withDetail("smoke test", "cache not available").build();
    }

    // check db available
    try (Connection connection = dataSource.getConnection()) {
    } catch (SQLException e) {
        LOG.warn("DB not available");
        return Health.down().withDetail("smoke test", e.getMessage()).build();
    }

    // check some service url is reachable
    try {
        URL url = new URL(resUrl);
        int port = url.getPort();
        if (port == -1) {
            port = url.getDefaultPort();
        }

        try (Socket socket = new Socket(url.getHost(), port)) {
        } catch (IOException e) {
            LOG.warn("Failed to open socket to " + resUrl);
            return Health.down().withDetail("smoke test", e.getMessage()).build();
        }
    } catch (MalformedURLException e1) {
        LOG.warn("Malformed URL: " + resUrl);
        return Health.down().withDetail("smoke test", e1.getMessage()).build();
    }

    return Health.up().build();
}
  

package com.alibaba.cloud.nacos.endpoint;

import com.alibaba.nacos.api.config.ConfigService;

import org.springframework.boot.actuate.health.AbstractHealthIndicator;
import org.springframework.boot.actuate.health.Health;

/**
 * @author xiaojing
 */
public class NacosConfigHealthIndicator extends AbstractHealthIndicator {

    private final ConfigService configService;

    public NacosConfigHealthIndicator(ConfigService configService) {
        this.configService = configService;
    }

    @Override
    protected void doHealthCheck(Health.Builder builder) throws Exception {
        builder.up();

        String status = configService.getServerStatus();
        builder.status(status);
    }
}
  

{
    "status": "UP",
    "components": {
        "nacosConfig": {
            "status": "UP"
        }
    }
}
  

{
    "status": "DOWN",
    "components": {
        "nacosConfig": {
            "status": "DOWN"
        }
    }
}