Disable/enable webhooks

Signed-off-by: Marcus Noble <github@marcusnoble.co.uk>

home/.bin/.utils

@@ -0,0 +1,39 @@
+END_CHARS="\e[0m\n"
+tput colors &>/dev/null
+if [ $? -eq 0 ]; then
+    bold() {
+      printf "\e[1m$@${END_CHARS}"
+    }
+
+    italic() {
+      printf "\e[3m$@${END_CHARS}"
+    }
+
+    underline() {
+      printf "\e[4m$@${END_CHARS}"
+    }
+
+    orange() {
+      printf "\e[38;5;208m$@${END_CHARS}"
+    }
+
+    blue() {
+      printf "\e[38;5;75m$@${END_CHARS}"
+    }
+else
+    bold() {
+      echo $@
+    }
+
+    italic() {
+      echo $@
+    }
+
+    underline() {
+      echo $@
+    }
+
+    orange() {
+      echo $@
+    }
+fi

home/.bin/gs-aws

@@ -1,17 +1,20 @@
 #!/usr/bin/env bash
 
+source .utils
+
 ACCOUNT_ID=${AWS_ACCOUNTID}
 ROLE=GiantSwarmAdmin
 MFA=
 MFA_ARN=arn:aws:iam::${AWS_ACCOUNTID}:mfa/marcus@giantswarm.io
 
 print_usage() {
-  echo "gs-aws - set up AWS credentials"
+  orange "gs-aws - set up AWS credentials"
   echo " "
+  underline "Usage:"
   echo "gs-aws"
   echo " "
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-a, --account         the AWS account number (default: \$AWS_ACCOUNTID)"
   echo "-r, --role            the role to assume (default: GiantSwarmAdmin)"

home/.bin/gs-create-cluster

@@ -1,17 +1,20 @@
 #!/usr/bin/env bash
 
+source .utils
+
 NAMESPACE="org-giantswarm"
 RELEASE="20.0.0-alpha1"
 PROVIDER="aws"
 AZS="eu-west-1a"
 
 print_usage() {
-  echo "gs-create-cluster - create a Giant Swarm managed workload cluster"
+  orange "gs-create-cluster - create a Giant Swarm managed workload cluster"
   echo " "
+  underline "Usage:"
   echo "gs-create-cluster [cluster-name]"
   echo " "
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the cluster is in (default: org-giantswarm)"
   echo "-r, --release         the namespace the cluster is in (default: 20.0.0-alpha1)"

home/.bin/gs-get-cluster

@@ -1,16 +1,19 @@
 #!/usr/bin/env bash
 
+source .utils
+
 set -e
 
 NAMESPACE="org-giantswarm"
 
 print_usage() {
-  echo "gs-get-cluster - get a Giant Swarm managed workload cluster"
+  orange "gs-get-cluster - get a Giant Swarm managed workload cluster"
   echo " "
+  underline "Usage:"
   echo "gs-get-cluster [cluster-name]"
   echo " "
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the cluster is in (default: org-giantswarm)"
 }

home/.bin/gs-login

@@ -1,17 +1,20 @@
 #!/usr/bin/env bash
 
+source .utils
+
 DEBUG=""
 
 print_usage() {
-  echo "gs-login - login to Giant Swarm managed clusters"
+  orange "gs-login - login to Giant Swarm managed clusters"
   echo " "
+  underline "Usage:"
   echo "gs-login [INSTALLATION] [WORKLOAD CLUSTER] [ORGANISATION]"
   echo " "
-  echo "Examples:"
+  underline "Examples:"
   echo "> gs-login gauss"
   echo "> gs-login gauss mywc1"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help                show this help text"
 }
 

home/.bin/gs-open

@@ -1,21 +1,27 @@
 #!/usr/bin/env bash
 
+source .utils
+
 DEBUG=""
 
-SUPPORTED_APPS="alertmanager argocd grafana happa kibana kyverno prometheus"
+SUPPORTED_APPS="alertmanager cloudprovider grafana happa kibana kyverno prometheus"
 
 print_usage() {
-  echo "gs-open - open apps on Giant Swarm clusters"
+  orange "gs-open - open apps on Giant Swarm clusters"
   echo " "
+  underline "Usage:"
   echo "gs-open [APP] [INSTALLATION] [WORKLOAD CLUSTER] "
   echo " "
-  echo "Examples:"
+  underline "Supported apps:"
+  italic "${SUPPORTED_APPS}"
+  echo " "
+  underline "Examples:"
   echo "> gs-open prometheus gauss"
   echo "> gs-open alertmanager gauss mywc1"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help                show this help text"
-  echo "--debug                   show debug log output"
+  echo "    --debug               show debug log output"
 }
 
 POS_ARGS=()
@@ -48,17 +54,25 @@ if [ ${#POS_ARGS[@]} -eq 1 ]; then
   POS_ARGS+=(`opsctl list installations --short | tr ' ' '\n' | fzf`)
 fi
 
+APP=${POS_ARGS[0]}
+if [[ "${APP}" == "cloud" ]]; then
+  APP=cloudprovider
+fi
+if [[ "${APP}" == "prom" ]]; then
+  APP=prometheus
+fi
+
 case ${#POS_ARGS[@]} in
   0)
     print_usage
     exit 1
     ;;
   2)
-    echo "✨  Opening ${POS_ARGS[0]} on ${POS_ARGS[1]}"
+    echo "✨  Opening ${APP} on ${POS_ARGS[1]}"
-    opsctl open ${DEBUG} --app ${POS_ARGS[0]} --installation ${POS_ARGS[1]}
+    opsctl open ${DEBUG} --app ${APP} --installation ${POS_ARGS[1]}
     ;;
   3)
-    echo "✨  Opening ${POS_ARGS[0]} on ${POS_ARGS[1]}/${POS_ARGS[2]}"
+    echo "✨  Opening ${APP} on ${POS_ARGS[1]} / ${POS_ARGS[2]}"
-    opsctl open ${DEBUG} --app ${POS_ARGS[0]} --installation ${POS_ARGS[1]} --workload-cluster ${POS_ARGS[2]}
+    opsctl open ${DEBUG} --app ${APP} --installation ${POS_ARGS[1]} --workload-cluster ${POS_ARGS[2]}
     ;;
 esac

home/.bin/gs-release

@@ -1,14 +1,17 @@
 #!/usr/bin/env bash
 
+source .utils
+
 set -e
 
 print_usage() {
-  echo "gs-release - create a new release of a Giant Swarm repo"
+  orange "gs-release - create a new release of a Giant Swarm repo"
   echo " "
+  underline "Usage:"
   echo "gs-release [SEMVER LEVEL]"
   echo " "
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help      show this help text"
 }
 

home/.bin/kube-all

@@ -1,18 +1,20 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
 NAMESPACE=${NAMESPACE:-default}
 LABEL=""
 ALL_NAMESPACES=false
 
 print_usage() {
-  echo "kube-all - A better 'kubectl get all' - actually get all Kubernetes resources, including custom resources"
+  blue "kube-all - A better 'kubectl get all' - actually get all Kubernetes resources, including custom resources"
   echo " "
+  underline "Usage:"
   echo "kube-all [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the to search in"
   echo "-l, --selector        the label selector to match on"

home/.bin/kube-clean-replicasets

@@ -1,17 +1,20 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
+NAMESPACE=${NAMESPACE:-default}
 LABEL=""
 ALL_NAMESPACES=false
 
 print_usage() {
-  echo "kube-clean-replicasets - Remove all olf ReplicaSets with 0 desired pods"
+  blue "kube-clean-replicasets - Remove all olf ReplicaSets with 0 desired pods"
   echo " "
+  underline "Usage:"
   echo "kube-clean-replicasets [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the to search in"
   echo "-l, --selector        the label selector to match on"

home/.bin/kube-disable-webhook

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+source .utils
+
+set -e
+WEBHOOK_TYPE="mutating"
+
+print_usage() {
+  blue "kube-disable-webhook - Disabled a webhook by modifying the namespace selector"
+  echo " "
+  underline "Usage:"
+  echo "kube-disable-webhook [options] NAME"
+  echo " "
+  underline "Options:"
+  echo "-h, --help            show this help text"
+  echo "-t, --type            the type of webhook [mutating (default), validating]"
+}
+
+while test $# -gt 0; do
+  case "$1" in
+    -t|--type)
+      shift
+      WEBHOOK_TYPE=$1
+      shift
+      ;;
+    -h|--help)
+      print_usage
+      exit 0
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+NAME=${1}
+
+FAKE_SELECTOR='"namespaceSelector":{"matchExpressions":[{"key":"disabled","operator":"In","values":["webhook"]}]}'
+
+if [[ "${WEBHOOK_TYPE}" == "mutating" ]]; then
+  printf "🚫 Disabling mutating webhook ${NAME}..."
+  kubectl annotate mutatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} previous-state='kubectl get mutatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -o json'
+  HOOKS=$(kubectl get mutatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -o go-template='{{range .webhooks}}{{.name}}{{"\n"}}{{end}}')
+  for HOOK in ${HOOKS}
+  do
+    kubectl patch mutatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -p '{"webhooks": [{"name": "'${HOOK}'", '${FAKE_SELECTOR}'}]}' 1>/dev/null
+  done
+  printf " ✅  Done"
+elif [[ "${WEBHOOK_TYPE}" == "validating" ]]; then
+  printf "🚫 Disabling validating webhook ${NAME}..."
+  kubectl annotate validatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} previous-state='kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -o json'
+  HOOKS=$(kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -o go-template='{{range .webhooks}}{{.name}}{{"\n"}}{{end}}')
+  for HOOK in ${HOOKS}
+  do
+    kubectl patch validatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -p '{"webhooks": [{"name": "'${HOOK}'", '${FAKE_SELECTOR}'}]}' 1>/dev/null
+  done
+  printf " ✅  Done"
+else
+  echo "Unknown webhook type"
+  exit 1
+fi

home/.bin/kube-exec

@@ -1,17 +1,20 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
+NAMESPACE=${NAMESPACE:-default}
 POD=""
 CMD="sh"
 
 print_usage() {
-  echo "kube-exec - execute commands within a pod"
+  blue "kube-exec - execute commands within a pod"
   echo " "
+  underline "Usage:"
   echo "kube-exec [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the pod is in"
   echo "-p, --pod             the name of the pod"

home/.bin/kube-force-delete

@@ -1,16 +1,18 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
 NAMESPACE=${NAMESPACE:-default}
 
 print_usage() {
-  echo "kube-force-delete - Force delete resources, even those with finalizers"
+  blue "kube-force-delete - Force delete resources, even those with finalizers"
   echo " "
+  underline "Usage:"
   echo "kube-force-delete [RESOURCE_TYPE] [RESOURCE_NAME]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the resource is in (default: current namespace)"
 }

home/.bin/kube-forward-all

@@ -1,16 +1,20 @@
 #!/usr/bin/env bash
 
-set -e
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+source .utils
+
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
+NAMESPACE=${NAMESPACE:-default}
 HOST_PORT=10001
 
 print_usage() {
-  echo "kube-forward-all - create port-forwards for all pods in the given namespace"
+  blue "kube-forward-all - create port-forwards for all pods in the given namespace"
   echo " "
+  underline "Usage:"
   echo "kube-forward-all [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace to launch the pod in"
   echo "-p, --port            the port to start at (and increment from for each service) (default: 10001)"

home/.bin/kube-logs

@@ -1,17 +1,20 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
+NAMESPACE=${NAMESPACE:-default}
 POD=""
 ARGS=""
 
 print_usage() {
-  echo "kube-logs - tail logs from a pod"
+  blue "kube-logs - tail logs from a pod"
   echo " "
+  underline "Usage:"
   echo "kube-logs [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the pod is in"
   echo "-p, --pod             the name of the pod to get logs for"

home/.bin/kube-reenable-webhook

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+
+source .utils
+
+set -e
+WEBHOOK_TYPE="mutating"
+
+print_usage() {
+  blue "kube-reenable-webhook - Re-enable a previously disabled webhook"
+  echo " "
+  underline "Usage:"
+  echo "kube-reenable-webhook [options] NAME"
+  echo " "
+  underline "Options:"
+  echo "-h, --help            show this help text"
+  echo "-t, --type            the type of webhook [mutating (default), validating]"
+}
+
+while test $# -gt 0; do
+  case "$1" in
+    -t|--type)
+      shift
+      WEBHOOK_TYPE=$1
+      shift
+      ;;
+    -h|--help)
+      print_usage
+      exit 0
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+NAME=${1}
+
+FAKE_SELECTOR='"namespaceSelector":{"matchExpressions":[{"key":"disabled","operator":"In","values":["webhook"]}]}'
+
+if [[ "${WEBHOOK_TYPE}" == "mutating" ]]; then
+  printf "🔌 Re-enabling mutating webhook ${NAME}..."
+  kubectl get mutatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -o custom-columns="prev:.metadata.annotations.previous-state" --no-headers | kubectl apply -f -
+  printf " ✅  Done"
+elif [[ "${WEBHOOK_TYPE}" == "validating" ]]; then
+  printf "🔌 Re-enabling validating webhook ${NAME}..."
+  kubectl get validatingwebhookconfigurations.admissionregistration.k8s.io ${NAME} -o custom-columns="prev:.metadata.annotations.previous-state" --no-headers | kubectl apply -f -
+  printf " ✅  Done"
+else
+  echo "Unknown webhook type"
+  exit 1
+fi

home/.bin/kube-restarting

@@ -1,16 +1,19 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
+NAMESPACE=${NAMESPACE:-default}
 NAMESPACE="-A"
 
 print_usage() {
-  echo "kube-restarting - Show all pods with restarts"
+  blue "kube-restarting - Show all pods with restarts"
   echo " "
+  underline "Usage:"
   echo "kube-restarting [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the to search in (searches all if not set)"
 }

home/.bin/kube-shell

@@ -1,18 +1,21 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
+NAMESPACE=${NAMESPACE:-default}
 POD="shell"
 IMAGE="bash"
 CMD="sh"
 
 print_usage() {
-  echo "kube-shell - create a new pod and exec into it's shell"
+  blue "kube-shell - create a new pod and exec into it's shell"
   echo " "
+  underline "Usage:"
   echo "kube-shell [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the pod should launch in"
   echo "-p, --pod             the name of the pod to get logs for (default: shell)"

home/.bin/kube-ssh

@@ -1,18 +1,20 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
 NAMESPACE=${NAMESPACE:-default}
 POD="kube-ssh"
 NODE=""
 
 print_usage() {
-  echo "kube-ssh - gain access to a Kubernetes host node (ssh-like for when a host doesn't have ssh)"
+  blue "kube-ssh - gain access to a Kubernetes host node (ssh-like for when a host doesn't have ssh)"
   echo " "
+  underline "Usage:"
   echo "kube-ssh [options]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace to launch the pod in"
   echo "-p, --pod             the name of the pod to launch (default: kube-ssh)"

home/.bin/kube-template

@@ -1,15 +1,18 @@
 #!/usr/bin/env bash
 
-NAMESPACE=""
+source .utils
 
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
 set -e
+NAMESPACE=${NAMESPACE:-default}
 
 print_usage() {
-  echo "kube-template - Quickly template up kubernetes resources"
+  blue "kube-template - Quickly template up kubernetes resources"
   echo " "
+  underline "Usage:"
   echo "kube-template [options] RESOURCE_KIND NAME [extra arguments]"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the to search in"
 }

home/.bin/kube-trigger-cronjob

@@ -1,16 +1,18 @@
 #!/usr/bin/env bash
 
-set -e
+source .utils
 
-NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}' &>/dev/null)"
+set -e
 NAMESPACE=${NAMESPACE:-default}
 
 print_usage() {
-  echo "kube-trigger-cronjob - Triggers a CronJob by creating a new job based on it"
+  blue "kube-trigger-cronjob - Triggers a CronJob by creating a new job based on it"
   echo " "
+  underline "Usage:"
   echo "kube-trigger-cronjob [options] CRONJOB_NAME"
   echo " "
-  echo "Options:"
+  underline "Options:"
   echo "-h, --help            show this help text"
   echo "-n, --namespace       the namespace the to search in"
 }