Examples of com.netflix.eureka.util.EIPManager

com.netflix.eureka.util.EIPManager

An AWS specific elastic ip binding utility for binding eureka servers for a well known IP address.

Eureka clients talk to Eureka servers bound with well known IP addresses since that is the most reliable mechanism to discover the Eureka servers. When Eureka servers come up they bind themselves to a well known elastic ip

This binding mechanism gravitates towards one eureka server per zone for resilience.Atleast one elastic ip should be slotted for each eureka server in a zone. If more than eureka server is launched per zone and there are not enough elastic ips slotted, the server tries to pick a free EIP slotted for other zones and if it still cannot find a free EIP, waits and keeps trying.

@author Karthik Ranganathan, Greg Kim

    private void handleEIPBinding(PeerAwareInstanceRegistry registry)
    throws InterruptedException {
        EurekaServerConfig eurekaServerConfig = EurekaServerConfigurationManager.getInstance().getConfiguration();
        int retries = eurekaServerConfig.getEIPBindRebindRetries();
         // Bind to EIP if needed
        EIPManager eipManager = EIPManager.getInstance();
        for (int i = 0; i < retries; i++) {
               try {
                    if (eipManager.isEIPBound()) {
                        break;
                    } else {
                        eipManager.bindEIP();
                    }
                } catch (Throwable e) {
                    logger.error("Cannot bind to EIP", e);
                    Thread.sleep(EIP_BIND_SLEEP_TIME_MS);
                }

            public void run() {
                try {
                    // If the EIP is not bound, the registry could  be stale
                    // First sync up the registry from the neighboring node before
                    // trying to bind the EIP
                    EIPManager eipManager = EIPManager.getInstance();
                    if (!eipManager.isEIPBound()) {
                        registry.clearRegistry();
                        int count = registry.syncUp();
                        registry.openForTraffic(count);
                    } else {
                        // An EIP is already bound
                        return;
                    }
                    eipManager.bindEIP();
                } catch (Throwable e) {
                    logger.error("Could not bind to EIP", e);
                }
            }
        }, eurekaServerConfig.getEIPBindingRetryIntervalMs(),

Examples of com.netflix.eureka.util.EIPManager

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