add namespace management and add functions

kubectl_aliases

@@ -1,57 +1,158 @@
-#!/bin/bash
+##!/bin/bash
+
+## apply default namestace
+## kn namespace-name (will set amespace-name as fefault for all commands)
+## kn (will clear default namespace)
+function kn() {
+  if [ -n "$1" ]; then
+    export KUBECTL_NAMESPACE=$1
+    echo "k implicit namespace set to $1"
+  else
+    unset KUBECTL_NAMESPACE
+    echo "k implicit namespace cleared for"
+  fi
+}
+
+function k() {
+  local kubens
+  if [ -n "$KUBECTL_NAMESPACE" ]; then
+    local kubens="-n=$KUBECTL_NAMESPACE"
+  fi
+  kubectl $kubens $@
+}
+
+## search pod by short name
+function kf() {
+  local name=$(kgp -o custom-columns=NAME:.metadata.name | grep "$1" | head -1 | cut -d" " -f1)
+  echo "$name"
+}
+
+function klog() {
+  if [[ -z ${2:-} ]] ; then
+    local pod_name=$(kf $1)
+    k logs -f --tail=500 $pod_name
+  else
+    k logs -f --tail=500 $@
+  fi
+}
+
+function kgp() {
+  if [ -n "$1" ] ; then
+    k get pod $@
+  else
+    k get pod -o wide --sort-by=.metadata.creationTimestamp
+  fi
+}
+
+function kx() {
+  local pod_name=$(kf $1)
+  shift
+  if [[ -z ${1:-} ]] ; then args_pass="bash" ; else args_pass=$@ fi
+  k exec -ti $pod_name -- $args_pass
+}
+
+# port forward to service
+function kpf() {
+  if [[ $(k get svc $1 2>/dev/null) ]] ; then
+    local service_name=$1
+    shift
+    if [[ -z ${1:-} ]] ; then
+      local port_number=$(k get svc $service_name -o=jsonpath='{.spec.ports[0].port}' | grep -v "Applying implicit namespace")
+      k port-forward svc/$service_name "${port_number}:${port_number}"
+    else
+      k port-forward svc/$service_name $@
+    fi
+  else
+    k port-forward $@
+  fi
+}
+
+## get list of secret and show values of secrets if specified
+function ksec() {
+  if [ -n "$1" ] ; then
+    k get secret $1 -o json | jq '.data | map_values(@base64d)'
+  else
+    k get secret | grep -v 'sh.helm.release' | grep -v 'kubernetes.io/service-account-token'
+  fi
+}
 
 # other
-alias k='kubectl'
-alias kl='kubectl logs'
-alias kexec='kubectl exec -it'
-alias kpf='kubectl port-forward'
-alias kaci='kubectl auth can-i'
-alias kat='kubectl attach'
+alias kl='k logs'
+alias kexec='k exec -it'
+alias kaci='k auth can-i'
+alias kat='k attach'
+alias ktopall='k top pod --all-namespaces --no-headers --sort-by=cpu | head -20'
+alias ktop='k top pod --no-headers --sort-by=cpu | head -20'
+alias kev="k get events --sort-by='.metadata.creationTimestamp' | tail -100"
 
 # get
-alias kg='kubectl get'
-alias kgns='kubectl get ns'
-alias kgp='kubectl get pods'
-alias kgd='kubectl get deployments'
-alias kgrs='kubectl get rs'
-alias kgss='kubectl get ss'
-alias kgds='kubectl get ds'
-alias kgs='kubectl get svc -o wide'
-alias kgn='kubectl get nodes -o wide'
+alias kg='k get'
+alias kgns='k get ns'
+alias kgd='k get deployments'
+alias kgpa='k get po --all-namespaces -o wide --sort-by=.metadata.creationTimestamp'
+alias kgrs='k get rs'
+alias kgss='k get ss'
+alias kgds='k get ds'
+alias kgs='k get svc -o wide'
+alias kgn='k get nodes -o wide'
 
 # describe
-alias kdes='kubectl describe'
-alias kdesns='kubectl describe ns'
-alias kdesp='kubectl describe pod'
-alias kdesd='kubectl describe deployment'
-alias kdesrs='kubectl describe rs'
-alias kdesss='kubectl describe ss'
-alias kdesds='kubectl describe ds'
-alias kdess='kubectl describe svc'
+alias kdes='k describe'
+alias kdesns='k describe ns'
+alias kdesp='k describe pod'
+alias kdesd='k describe deployment'
+alias kdesrs='k describe rs'
+alias kdesss='k describe ss'
+alias kdesds='k describe ds'
+alias kdess='k describe svc'
 
 # delete
-alias kd='kubectl delete'
-alias kdns='kubectl delete ns'
-alias kdp='kubectl delete pod'
-alias kdd='kubectl delete deployment'
-alias kdrs='kubectl delete rs'
-alias kdss='kubectl delete ss'
-alias kdds='kubectl delete ds'
-alias kds='kubectl delete svc'
+alias kd='k delete'
+alias kdns='k delete ns'
+alias kdp='k delete pod'
+alias kdd='k delete deployment'
+alias kdrs='k delete rs'
+alias kdss='k delete ss'
+alias kdds='k delete ds'
+alias kds='k delete svc'
 
 # edit
-alias ke='kubectl edit'
-alias kens='kubectl edit ns'
-alias ked='kubectl edit deployment'
-alias kers='kubectl edit rs'
-alias kess='kubectl edit ss'
-alias keds='kubectl edit ds'
-alias kes='kubectl edit svc'
+alias ke='k edit'
+alias kens='k edit ns'
+alias ked='k edit deployment'
+alias kers='k edit rs'
+alias kess='k edit ss'
+alias keds='k edit ds'
+alias kes='k edit svc'
 
 # config
-alias kcfg='kubectl config'
-alias kcfgns='kubectl config set-context --current --namespace'
-alias kcfgcurrent='kubectl config current-context'
-alias kcfggc='kubectl config get-contexts'
-alias kcfgsc='kubectl config set-context'
-alias kcfguc='kubectl config use-context'
+alias kcfg='k config'
+alias kcfgns='k config set-context --current --namespace'
+alias kcfgcurrent='k config current-context'
+alias kcfggc='k config get-contexts'
+alias kcfgsc='k config set-context'
+alias kcfguc='k config use-context'
+
+# select from available context
+function kctx
+{
+  local PS3="Please select a context: "
+  local COLUMNS=20
+  local CONTEXTS=`k config view | grep -e "^- name: " | sed -n -e 's/- name: \(.*\)/\1/p'`
+  local CURRENT=`k config current-context`
+
+  select CTX in `echo $CONTEXTS`;
+  do
+    case $CTX in
+      $CURRENT)
+        echo "Already on that context: $CURRENT"
+        break
+        ;;
+      *)
+        echo "Switching context: $CTX ($REPLY)"
+        k config use-context $CTX
+        break
+        ;;
+    esac
+  done
+}