Couldn't connect to host, port: imap.mail.<region>.awsapps.com,<port>; timeout -1
java.net .SocketTimeoutException: connect timed out
Connection could not be created to jdbc:postgresql://<hostname>.<region>.rds.amazonaws.com:5432/
<URL>.<region>.rds.amazonaws.com (<IPaddress>:3306): Operation timed out
Error : java.sql.SQLNonTransientConnectionException: Could not connect to address=(host=<hostname>.<region>.rds.amazonaws.com)(port=3306)(type=master) : Socket fail to connect to host:<hostname>.<region>.rds.amazonaws.com , port:3306. connect timed out***
o.apache.kafka.clients.NetworkClient -[Producer clientId=producer-1] Connection to node -1 (<hostname>.c3.kafka.<region>.amazonaws.com/<IPaddress>:9092) could not be established. Broker may not be available.
You get these errors because of network connection problems that might be caused by an incorrect Amazon Virtual Private Cloud (Amazon VPC) configuration. To resolve these issues, check the security groups and network access control lists (ACLs) that are associated with the following:
Worker node instances
Services that the pods are trying to connect to
You get connection timeout errors typically when the security group rules or network ACLs explicitly deny the required permissions.
To resolve these errors, check that your environment is set up correctly by confirming the following:
Your security groups meet the Amazon EKS requirements.
Your security groups for pods allow pods to communicate with each other.
The network ACL doesn't deny the connection.
Your subnet has a local route for communicating within your Amazon VPC.
Your pods are scheduled and in the RUNNING state.
You have the latest available version of the Amazon VPC Container Network Interface (CNI) plugin for Kubernetes.
Your cluster's VPC subnets have a VPC interface endpoint for AWS services that your pods need to access.
Your security groups meet the Amazon EKS requirements
Be sure that the inbound and outbound rules allow traffic on protocols and ports that your worker nodes use for communicating with other services. It's a best practice to allow all traffic to flow between your cluster and nodes and allow all outbound traffic to any destination. You don't need to change security group rules every time a new pod with a new port is created. For more information, see Amazon EKS security group requirements and considerations.
Your security groups for pods allow pods to communicate with each other
AWS Security Token Service (AWS STS) (required when you use IAM roles for service accounts)
AWS App Mesh The App Mesh controller for Kubernetes isn't supported. For more information, see App Mesh controller on the GitHub website. Cluster Autoscaler is supported. When deploying Cluster Autoscaler pods, make sure that the command line includes --aws-use-static-instance-list=true. For more information, see Use Static Instance List on the GitHub website. The worker node VPC must also include the AWS STS VPC endpoint and Amazon EC2 Auto Scaling endpoint.