启动cassandra后9160端口未打开

Question

我已经在aws vpc中的redhat 6.4 ami上部署了cassandra(1.2.15)和2个节点。两个节点都在私有子网中。种子节点工作正常，但是当我在新节点中启动cassandra时，我的9160端口没有打开。我已经在Listen_addess和rpc_addrss选项中给出了新节点和种子节点的内网ip。rpc_port为9160。现在请告诉我是什么导致了这个问题。提前谢谢。

Answer 1

Creating an EC2 security group页面上的信息可能会对您有所帮助。

找到实例/群集的安全组或从EC2仪表板创建新的安全组: EC2仪表板->网络与安全->安全组

并使用以下信息设置入站端口的规则：

Table 1. Public ports
Port number Source     Description
22          0.0.0.0/0  SSH port
8888        0.0.0.0/0  OpsCenter website. The opscenterd daemon listens on this port for HTTP requests coming directly from the browser.

Table 2. Cassandra inter-node ports
Port number Source     Description
1024-65535  <Your-SG>  JMX reconnection/loopback ports. See description for port 7199.
7000        <Your-SG>  Cassandra inter-node cluster communication.
7199        <Your-SG>  Cassandra JMX monitoring port. After the initial handshake, the JMX protocol requires that the client reconnects on a randomly chosen port (1024+).
9160        <Your-SG>  Cassandra client port (Thrift).

Table 3. Cassandra OpsCenter ports
Port number Source     Description
61620       <Your-SG>  OpsCenter monitoring port. The opscenterd daemon listens on this port for TCP traffic coming from the agent.
61621       <Your-SG>  OpsCenter agent port. The agents listen on this port for SSL traffic initiated by OpsCenter.

对于公共端口(22和8888)，保留Source字段0.0.0.0/0，对于其余端口，输入您的安全组的名称<Your-SG>，这样只有该组中的实例才会参与规则。

Answer 2

您应确保已在分配给EC2实例的安全组中打开端口9160。