Commits on Apr 19, 2023

1. Collect more info about Amazon VPC CNI …

   When troubleshooting with Amazon VPC CNI, it is very depends on how Envs
   pass into container, if we could get Envs that would be helpful.
   
   ```
       Environment:
         ADDITIONAL_ENI_TAGS:                    {}
         AWS_VPC_CNI_NODE_PORT_SUPPORT:          true
         AWS_VPC_ENI_MTU:                        9001
         AWS_VPC_K8S_CNI_CUSTOM_NETWORK_CFG:     false
         AWS_VPC_K8S_CNI_EXTERNALSNAT:           false
         AWS_VPC_K8S_CNI_LOGLEVEL:               DEBUG
         AWS_VPC_K8S_CNI_LOG_FILE:               /host/var/log/aws-routed-eni/ipamd.log
         AWS_VPC_K8S_CNI_RANDOMIZESNAT:          prng
         AWS_VPC_K8S_CNI_VETHPREFIX:             eni
         AWS_VPC_K8S_PLUGIN_LOG_FILE:            /var/log/aws-routed-eni/plugin.log
         AWS_VPC_K8S_PLUGIN_LOG_LEVEL:           DEBUG
         DISABLE_INTROSPECTION:                  false
         DISABLE_METRICS:                        false
         DISABLE_NETWORK_RESOURCE_PROVISIONING:  false
         ENABLE_IPv4:                            true
         ENABLE_IPv6:                            false
         ENABLE_POD_ENI:                         false
         ENABLE_PREFIX_DELEGATION:               false
         WARM_ENI_TARGET:                        1
         WARM_PREFIX_TARGET:                     1
         MY_NODE_NAME:                            (v1:spec.nodeName)
   ```
   
   besides from these, with detailed info output, we can also tell if
   aws-node is running with a Service Account, and if IRSA is properly
   conofigured, which should benifits a lot for troubleshooting.

   

   guessi committed Apr 19, 2023
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