do you have anything in

cattle-system

namespace on the cluster being imported?

INFO: Environment: CATTLE_ADDRESS=x.x.x.x CATTLE_CA_CHECKSUM=6fc340ec1b9d7c4c6042fc18cfc047e587cedba97ee872a0a7dc277f08e0d394 CATTLE_CLUSTER=true CATTLE_CLUSTER_AGENT_PORT=tcp://x.x.x.x:80 CATTLE_CLUSTER_AGENT_PORT_443_TCP=tcp://x.x.x.x:443 CATTLE_CLUSTER_AGENT_PORT_443_TCP_ADDR=x.x.x.x CATTLE_CLUSTER_AGENT_PORT_443_TCP_PORT=443 CATTLE_CLUSTER_AGENT_PORT_443_TCP_PROTO=tcp CATTLE_CLUSTER_AGENT_PORT_80_TCP=tcp://x.x.x.x:80 CATTLE_CLUSTER_AGENT_PORT_80_TCP_ADDR=10.43.135.33 CATTLE_CLUSTER_AGENT_PORT_80_TCP_PORT=80 CATTLE_CLUSTER_AGENT_PORT_80_TCP_PROTO=tcp CATTLE_CLUSTER_AGENT_SERVICE_HOST=x.x.x.x CATTLE_CLUSTER_AGENT_SERVICE_PORT=80 CATTLE_CLUSTER_AGENT_SERVICE_PORT_HTTP=80 CATTLE_CLUSTER_AGENT_SERVICE_PORT_HTTPS_INTERNAL=443 CATTLE_CLUSTER_REGISTRY= CATTLE_INGRESS_IP_DOMAIN=sslip.io CATTLE_INSTALL_UUID=d63dbfcc-a21a-4be5-80a9-5395e0abea12 CATTLE_INTERNAL_ADDRESS= CATTLE_IS_RKE=false CATTLE_K8S_MANAGED=true CATTLE_NODE_NAME=cattle-cluster-agent-b5c5d56d7-rclf6 CATTLE_SERVER=https://x.x.x.x CATTLE_SERVER_VERSION=v2.6.7 INFO: Using resolv.conf: nameserver x.x.x.x search cattle-system.svc.cluster.local svc.cluster.local cluster.local us-east4-c.c.xxxxxx.internal c.xxxxxx.internal google.internal options ndots:5 ERROR: https://x.x.x.x/ping is not accessible (Could not resolve host: x.x.x.x.nip.io)

there you go:

ERROR: <https://x.x.x.x/ping> is not accessible (Could not resolve host: <http://x.x.x.x.nip.io|x.x.x.x.nip.io>)

Can you ping your host

<http://x.x.x.x.nip.io|x.x.x.x.nip.io>

from command line of the cluster being imported?