In order to check the logs for the pod you will need to know the pod name, run this command to see the pod name:
kubectl logs -n services -l app.kubernetes.io/instance=cray-dhcp-kea -c cray-dhcp-kea
Example:
kubectl logs -n services -l app.kubernetes.io/instance=cray-dhcp-kea -c cray-dhcp-kea
2020-08-03 21:47:50.580 INFO [kea-dhcp4.dhcpsrv/10] DHCPSRV_MEMFILE_LEASE_FILE_LOAD loading leases from file /cray-dhcp-kea-socket/dhcp4.leases
2020-08-03 21:47:50.580 INFO [kea-dhcp4.dhcpsrv/10] DHCPSRV_MEMFILE_LFC_SETUP setting up the Lease File Cleanup interval to 3600 sec
2020-08-03 21:47:50.580 WARN [kea-dhcp4.dhcpsrv/10] DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: the interface eth0 has no usable IPv4 addresses configured
2020-08-03 21:47:50.580 WARN [kea-dhcp4.dhcpsrv/10] DHCPSRV_NO_SOCKETS_OPEN no interface configured to listen to DHCP traffic
2020-08-03 21:48:00.602 INFO [kea-dhcp4.commands/10] COMMAND_RECEIVED Received command 'lease4-get-all'
{"Dhcp4": {"control-socket": {"socket-name": "/cray-dhcp-kea-socket/cray-dhcp-kea.socket", "socket-type": "unix"}, "hooks-libraries": [{"library": "/usr/local/lib/kea/hooks/libdhcp_lease_cmds.so"},
...SNIP...
waiting 10 seconds for any leases to be given out...
[{'arguments': {'leases': []}, 'result': 3, 'text': '0 IPv4 lease(s) found.'}]
2020-08-03 21:48:22.734 INFO [kea-dhcp4.commands/10] COMMAND_RECEIVED Received command 'config-get'
This command will output kea logs:
kubectl logs -n services -l app.kubernetes.io/instance=cray-dhcp-kea -c cray-dhcp-kea | grep -i error
Shell into a Kea Pod
kubectl exec -n services -it pod/$(kubectl get -n services pods | grep kea | head -n 1) -c cray-dhcp-kea -- /bin/bash