AWS EMR 连接到主节点：连接被拒绝
AWS EMR connect to Master Node: Connection Refused
我在 AWS 上设置了一个新的 EMR 实例。我已经复制了主节点的ssh连接命令。
ssh -i -vvv ~/.ssh/xxxx.pem hadoop@ec2-xx-xxx-xxx-xx.us-east-2.compute.amazonaws.com
我的 pem 文件位于正确的位置。我已经使用
更改了文件的权限
chmod 400 ~/.ssh/xxxx.pem
我仍然收到以下错误：
debug1: Connecting to ec2-18-219-186-80.us-east-2.compute.amazonaws.com port 22.
非常感谢任何帮助。
我明白了。您必须将 SSH 权限添加到您希望通过 SSH 连接到的计算机上的安全组。转到 EC2，然后向下转到安全组，然后在主节点上，为 SSH 添加规则。
来自亚马逊：
Security groups are restrictive by default. They reject all traffic. You can add a rule to allow traffic on a particular port to your custom or additional security groups. If there is more than one rule for a specific port in two security groups that apply to the same instances, the most permissive rule is applied. For example, if you have a rule that allows SSH access via TCP port 22 from IP address 203.0.113.1 and another rule that allows access to TCP port 22 from any IP address (0.0.0.0/0), the rule allowing access by any IP address takes precedence.
https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-additional-sec-groups.html
我在 AWS 上设置了一个新的 EMR 实例。我已经复制了主节点的ssh连接命令。
ssh -i -vvv ~/.ssh/xxxx.pem hadoop@ec2-xx-xxx-xxx-xx.us-east-2.compute.amazonaws.com
我的 pem 文件位于正确的位置。我已经使用
更改了文件的权限chmod 400 ~/.ssh/xxxx.pem
我仍然收到以下错误：
debug1: Connecting to ec2-18-219-186-80.us-east-2.compute.amazonaws.com port 22.
非常感谢任何帮助。
我明白了。您必须将 SSH 权限添加到您希望通过 SSH 连接到的计算机上的安全组。转到 EC2，然后向下转到安全组，然后在主节点上，为 SSH 添加规则。
来自亚马逊：
Security groups are restrictive by default. They reject all traffic. You can add a rule to allow traffic on a particular port to your custom or additional security groups. If there is more than one rule for a specific port in two security groups that apply to the same instances, the most permissive rule is applied. For example, if you have a rule that allows SSH access via TCP port 22 from IP address 203.0.113.1 and another rule that allows access to TCP port 22 from any IP address (0.0.0.0/0), the rule allowing access by any IP address takes precedence.
https://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-additional-sec-groups.html