客户端无法连接到Hazelcast-jet ec2群集

时间：2019-09-26 22:53:04

标签： amazon-ec2 hazelcast-jet

我在instructions here之后在aws ec2上设置了一个Hazelcast-jet集群。我使用了hazelcast-aws模型，以便节点可以自动发现彼此。集群已启动并正在运行：

[2019-09-26 22:26:26.288] [INFO   ] com.hazelcast.config.AbstractConfigLocator - Using configuration file at /home/ec2-user/hazelcast-jet-3.1/config/hazelcast.xml
[2019-09-26 22:26:26.416] [INFO   ] com.hazelcast.instance.AddressPicker - [LOCAL] [jet] [3.1] Interfaces is enabled, trying to pick one address matching to one of: [172.31.*.*]
[2019-09-26 22:26:26.416] [INFO   ] com.hazelcast.instance.AddressPicker - [LOCAL] [jet] [3.1] Prefer IPv4 stack is true, prefer IPv6 addresses is false
[2019-09-26 22:26:26.425] [INFO   ] com.hazelcast.instance.AddressPicker - [LOCAL] [jet] [3.1] Picked [172.31.33.212]:5701, using socket ServerSocket[addr=/0:0:0:0:0:0:0:0,localport=5701], bind any local is true
[2019-09-26 22:26:26.460] [INFO   ] com.hazelcast.system - [172.31.33.212]:5701 [jet] [3.1] Hazelcast Jet 3.1 (20190624 - 000ced7) starting at [172.31.33.212]:5701

它也成功找到了它的同伴：

[2019-09-26 22:26:26.664] [INFO   ] com.hazelcast.spi.impl.operationservice.impl.BackpressureRegulator - [172.31.33.212]:5701 [jet] [3.1] Backpressure is disabled
[2019-09-26 22:26:27.103] [INFO   ] com.hazelcast.instance.Node - [172.31.33.212]:5701 [jet] [3.1] Activating Discovery SPI Joiner
[2019-09-26 22:26:27.297] [INFO   ] com.hazelcast.jet.impl.metrics.JetMetricsService - [172.31.33.212]:5701 [jet] [3.1] Configuring metrics collection, collection interval=5 seconds, retention=5 seconds, publishers=[Management Center Publisher, JMX Publisher]
[2019-09-26 22:26:27.343] [INFO   ] com.hazelcast.jet.impl.JetService - [172.31.33.212]:5701 [jet] [3.1] Setting number of cooperative threads and default parallelism to 36
[2019-09-26 22:26:27.345] [INFO   ] com.hazelcast.spi.impl.operationexecutor.impl.OperationExecutorImpl - [172.31.33.212]:5701 [jet] [3.1] Starting 36 partition threads and 19 generic threads (1 dedicated for priority tasks)
[2019-09-26 22:26:27.354] [INFO   ] com.hazelcast.internal.diagnostics.Diagnostics - [172.31.33.212]:5701 [jet] [3.1] Diagnostics disabled. To enable add -Dhazelcast.diagnostics.enabled=true to the JVM arguments.
[2019-09-26 22:26:27.364] [INFO   ] com.hazelcast.core.LifecycleService - [172.31.33.212]:5701 [jet] [3.1] [172.31.33.212]:5701 is STARTING
[2019-09-26 22:26:27.772] [INFO   ] com.hazelcast.nio.tcp.TcpIpConnector - [172.31.33.212]:5701 [jet] [3.1] Connecting to /172.31.47.40:5701, timeout: 10000, bind-any: true
[2019-09-26 22:26:27.782] [INFO   ] com.hazelcast.nio.tcp.TcpIpConnection - [172.31.33.212]:5701 [jet] [3.1] Initialized new cluster connection between /172.31.33.212:47065 and /172.31.47.40:5701
[2019-09-26 22:26:33.786] [INFO   ] com.hazelcast.internal.cluster.ClusterService - [172.31.33.212]:5701 [jet] [3.1]

Members {size:2, ver:6} [
        Member [172.31.47.40]:5701 - 3ba123c0-e98b-47dc-9bf5-34944d2c53a2
        Member [172.31.33.212]:5701 - 0127e9a7-80b1-4c5d-a122-2da5aa7fa042 this
]

除了我的客户端（不在aws上）无法连接到集群之外，其他所有内容看起来都不错。我正在做的是运行word counting example。唯一的区别是，我不想将客户端和服务器都运行在同一个JVM中，而是想将任务提交给我设置的集群。我将JetInstance jet = Jet.newJetInstance();替换为（instructions之后）：

        ClientConfig clientConfig = new ClientConfig();

        ClientNetworkConfig networkConfig = clientConfig.getNetworkConfig();
        clientConfig.getGroupConfig().setName("jet");
        networkConfig.getAwsConfig().setEnabled(true)
                .setProperty("access-key", "abc")
                .setProperty("secret-key", "cde")
                .setProperty("region", "us-west-2")
                .setProperty("security-group-name", "eee")
                .setProperty("hz-port", "5701")
                .setProperty("use-public-ip", "true");

        JetInstance jet = Jet.newJetClient(clientConfig);

我可以告诉客户正在寻找正确的端点：

INFO: hz.client_0 [jet] [3.0] [3.12] Trying to connect to cluster with name: jet
Sep 26, 2019 3:40:55 PM com.hazelcast.client.connection.nio.ClusterConnectorService
INFO: hz.client_0 [jet] [3.0] [3.12] Trying to connect to [172.31.47.40]:5701 as owner member
Sep 26, 2019 3:41:00 PM com.hazelcast.client.connection.nio.ClusterConnectorService
WARNING: hz.client_0 [jet] [3.0] [3.12] Exception during initial connection to [172.31.47.40]:5701: com.hazelcast.core.HazelcastException: java.net.SocketTimeoutException
Sep 26, 2019 3:41:00 PM com.hazelcast.client.connection.nio.ClusterConnectorService
INFO: hz.client_0 [jet] [3.0] [3.12] Trying to connect to [172.31.33.212]:5701 as owner member
Sep 26, 2019 3:41:05 PM com.hazelcast.client.connection.nio.ClusterConnectorService
WARNING: hz.client_0 [jet] [3.0] [3.12] Exception during initial connection to [172.31.33.212]:5701: com.hazelcast.core.HazelcastException: java.net.SocketTimeoutException

我已经使用两个ec2实例将5701添加到安全组的入站规则中。 为了调试，我运行了一些联网命令，以查看端口5701是否打开：

[ec2-user@ip-172-31-33-212 ~]$ sudo lsof -i -P -n | grep LISTEN
rpcbind   5428      rpc    8u  IPv4  50298      0t0  TCP *:111 (LISTEN)
rpcbind   5428      rpc   11u  IPv6  50301      0t0  TCP *:111 (LISTEN)
master    5897     root   13u  IPv4  40255      0t0  TCP 127.0.0.1:25 (LISTEN)
sshd      6115     root    3u  IPv4  41329      0t0  TCP *:22 (LISTEN)
sshd      6115     root    4u  IPv6  41331      0t0  TCP *:22 (LISTEN)
java     43020 ec2-user   10u  IPv6 118393      0t0  TCP *:5701 (LISTEN)

[ec2-user@ip-172-31-33-212 ~]$ sudo lsof -i:5701
COMMAND   PID     USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
java    43020 ec2-user   10u  IPv6 118393      0t0  TCP *:5701 (LISTEN)
java    43020 ec2-user   45u  IPv6 152973      0t0  TCP ip-172-31-33-212.us-west-2.compute.internal:52599->ip-172-31-47-40.us-west-2.compute.internal:5701 (ESTABLISHED)

我对网络的知识有限。我不知道是什么问题。我注意到的一件事是，当客户端尝试连接到专用ipv4地址时，为ipv6打开了端口。

1 个答案:

答案 0 :(得分：1)

Marko是对的（请看问题的评论）。看起来有些AWS网络约束。我在我的ec2盒之一上使用端口5701设置了netcat服务器。我无法使用nc从笔记本电脑连接到该端口，但可以从同一VPC中的另一个ec2连接到该端口。然后，我对端口80进行了相同的实验。我可以从我的笔记本电脑和ec2实例从同一VPC连接到该端口。看起来有些东西只允许AWS外部的实例连接到ec2实例的几个知名端口。

无论如何，我通过在端口80上运行hazelcast服务器来解除封锁自己。这不是理想的选择，但是相对于将测试代码部署到ec2而言，我更方便地尝试从IDE中尝试一些hazelcast-jet功能。

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