Show pods in "transition" mode

show_kube_status.sh

#!/usr/bin/env bash

# Expected input can be one of the following types:
#   CTX        # Just the context - shows "transition mode" for this cluster and all kube masters/nodes
#   CTX NS     # The context, a space, and the namespace - shows all pods in that NS and only kube nodes
TYPE=${1-none}
CTX=${TYPE}
NS=${2-$TYPE}
# Extract instance types, AZ, and kops instance group name
SED_FILTER_LABELS="-e 's/beta.kubernetes.*instance-type=/type=/' -e 's#beta.kubernetes.io/##g' -e 's#kubernetes.io/##g' -e 's#,arch=\w*##' -e 's#,os=\w*##'"
shift
SLEEP=${SLEEP-1}

case "$CTX" in
  context1|context2|context3|context4|context5|context6|context7|context8|context9)
    NUMNODES=$(kubectl --context $CTX get nodes | grep -v NAME | wc -l)
    if [ -z "$NODES" -a "$NUMNODES" -le 15 ]; then
      NODES=1
    fi
    if [ "$CTX" = "$NS" ]; then
      # Transition mode - Didn't request specific namespace, just show non healthy pods and all masters/nodes
      watch -n $SLEEP "[ -n \"$NODES\" ] && kubectl --context $CTX get nodes --show-labels | \
                         sed ${SED_FILTER_LABELS} | \
                         sort -k 6; \
                       echo;\
                       kubectl --context $CTX get pods --all-namespaces $@ -o wide | \
                         grep -vE 'Completed|Error' | \
                         grep -vE '(1/1|2/2|3/3|4/4|5/5|6/6)\s*Running'"
    else
      shift
      # Only show pods in the requested namespace, and only nodes (not masters)
      watch -n $SLEEP "[ -n \"$NODES\" ] && kubectl --context $CTX get nodes --show-labels | \
                         grep -v master | \
                         sed ${SED_FILTER_LABELS} | \
                         sort -t , -k 3; \
                       echo; \
                       kubectl --context $CTX -n $NS get pods $@ -o wide"
    fi
    ;;
  *)
    echo "Usage: $(basename $0)  target [namespace]"
    echo "Valid targets:"
    echo "  Specify the 'context', shows nodes and pods with errors:"
    echo "    context1 context2 context3 context4 context5 context6 context7 context8 context9"
    echo "  Specify 'context namespace', shows nodes and pods in that NS"
    echo "    Best to use k9s for that, unless also want node output"
    ;;
esac