Pod keeps restarting and is in a CrashLoopBackOff state

One of our pods won't start and is constantly restarting and is in a CrashLoopBackOff state:

NAME READY STATUS RESTARTS AGE

quasar-api-staging-14c385ccaff2519688add0c2cb0144b2-3r7v4   0/1      
CrashLoopBackOff   72         5h

Describing the pod looks this (just the events):

FirstSeen LastSeen Count From SubobjectPath Reason Message

  57m       57m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 7515ced7f49c
  57m       57m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 7515ced7f49c
  52m       52m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 2efe8885ad49
  52m       52m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 2efe8885ad49
  46m       46m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id a4361ebc3c06
  46m       46m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id a4361ebc3c06
  41m       41m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 99bc3a8b01ad
  41m       41m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 99bc3a8b01ad
  36m       36m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 3e873c664cde
  36m       36m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 3e873c664cde
  31m       31m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 97680dac2e12
  31m       31m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 97680dac2e12
  26m       26m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 42ef4b0eea73
  26m       26m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 42ef4b0eea73
  21m       21m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 7dbd65668733
  21m       21m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 7dbd65668733
  15m       15m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id d372cb279fff
  15m       15m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id d372cb279fff
  10m       10m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id bc7f5a0fe5d4
  10m       10m     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id bc7f5a0fe5d4
  5m        5m      1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id b545a71af1d2
  5m        5m      1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id b545a71af1d2
  3h        25s     43  {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Pulled  Container image "us.gcr.io/skywatch-app/quasar-api-staging:15.0" already present on machine
  25s       25s     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Started Started with docker id 3e4087281881
  25s       25s     1   {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Created Created with docker id 3e4087281881
  3h        5s      1143    {kubelet gke-skywatch-cf86c224-node-21bm}   spec.containers{quasar-api-staging} Backoff Back-off restarting failed docker container

The log for the pod doesn't show much either:

Pod "quasar-api-staging-14c385ccaff2519688add0c2cb0144b2-3r7v4" in namespace "default": container "quasar-api-staging" is in waiting state.

I've been able to run the pod locally, and it seems to work. I'm not sure what else to check or try. Any help or troubleshooting steps would be greatly appreciated!

You might try running kubectl logs <podid> --previous to see the logs from the previous instance of the container.