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gcp gcloud cheat sheet
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gcloud_cheat_sheet.md

Table of Contents

0.1. References

0.2. Other cheatsheets

0.3. Manage multiple gcloud config configurations

gcloud config configurations create pythonrocks
gcloud config configurations list
gcloud config configurations activate pythonrocks
gcloud config set core/account [email protected]
gcloud projects list
gcloud config set project mygcp-demo

0.3.1. Switch gcloud context with gcloud config

gcloud config list
gcloud config set account [email protected] 
gcloud config set project mygcp-demo
gcloud config set compute/region us-west1
gcloud config set compute/zone us-west1-a
alias demo='gcloud config set account [email protected] && gcloud config set project mygcp-demo && gcloud config set compute/region us-west1 && gcloud config set compute/zone us-west1-a'

cluster=$(gcloud config get-value container/cluster 2> /dev/null)
zone=$(gcloud config get-value compute/zone 2> /dev/null)
project=$(gcloud config get-value core/project 2> /dev/null)

#switch project based on the name
gcloud config set project $(gcloud projects list --filter='name:wordpress-dev' --format='value(project_id)')

command -v gcloud >/dev/null 2>&1 || { \
 echo >&2 "I require gcloud but it's not installed.  Aborting."; exit 1; }

REGION=$(gcloud config get-value compute/region)
if [[ -z "${REGION}" ]]; then
    echo "https://cloud.google.com/compute/docs/regions-zones/changing-default-zone-region" 1>&2
    echo "gcloud cli must be configured with a default region." 1>&2
    echo "run 'gcloud config set compute/region REGION'." 1>&2
    echo "replace 'REGION' with the region name like us-west1." 1>&2
    exit 1;
fi

0.4. Auth

gcloud auth list
# to authenticate with a user identity (via web flow) which then authorizes gcloud and other SDK tools to access Google Cloud Platform.
gcloud auth login
# Service Account: to authenticate with a user identity (via a web flow) but using the credentials as a proxy for a service account.
gcloud auth application-default login 
gcloud auth activate-service-account --key-file=sa_key.json
# use GOOGLE_APPLICATION_CREDENTIALS pointing to JSON key

kubectl uses OAuth token generated by

  • gcloud config config-helper --format json
  • gcloud config config-helper --format='value(credential.access_token)'
  • gcloud auth print-access-token generates new token

0.5. info

gcloud info --format flattened
export PROJECT=$(gcloud info --format='value(config.project)')

0.6. projects

# various way to get project_id
PROJECT_ID=$(gcloud config get-value core/project 2>/dev/null)
PROJECT_ID=$(gcloud config list project --format='value(core.project)')
PROJECT_ID=$(gcloud info --format='value(config.project)')

# get project_number
PROJECT_NUMBER=$(gcloud projects list --filter="project_id:${PROJECT_ID}"  --format='value(project_number)')
PROJECT_NUMBER=$(gcloud projects describe ${PROJECT_ID} --format="value(projectNumber)")
PROJECT_NUMBER=$(gcloud projects list --filter="name:${project_name}"  --format='value(project_number)')

0.7. zones & regions

To return a list of zones given a region

gcloud compute zones list --filter=region:us-central1

# list regions
gcloud compute regions list

0.8. organization

ORG_ID=$(gcloud organizations list --format 'value(ID)')
# list top level folders
gcloud resource-manager folders list --organization=$ORG_ID
# list sub folders given upper level folder id
gcloud resource-manager folders list --folder=$FOLDER_ID
# get iam policy for the folder
gcloud resource-manager folders get-iam-policy $FOLDER_ID

# grant roles to a user
ORGANIZATION_ADMIN_ADDRESS='user:[email protected]'
gcloud resource-manager folders add-iam-policy-binding ${folder_id} \
  --member=${ORGANIZATION_ADMIN_ADDRESS} \
  --role=roles/resourcemanager.folderAdmin
gcloud resource-manager folders add-iam-policy-binding ${folder_id} \
  --member=${ORGANIZATION_ADMIN_ADDRESS} \
  --role=roles/storage.admin
gcloud resource-manager folders add-iam-policy-binding ${folder_id} \
  --member=${ORGANIZATION_ADMIN_ADDRESS} \
  --role=roles/billing.projectManager

0.9. billing

gcloud organizations list
gcloud beta billing accounts list
# link a billing account with a project, assuming the user or service account has "Billing Account User" role. 
gcloud beta billing projects link ${project_id} \
            --billing-account ${ORGANIZATION_BILLING_ACCOUNT}

0.10. IAM


gcloud iam roles describe roles/container.admin

gcloud iam list-testable-permissions <uri>
e.g gcloud iam list-testable-permissions //cloudresourcemanager.googleapis.com/projects/$PROJECT_ID

gcloud iam list-grantable-roles <uri>
e.g. 
gcloud iam list-grantable-roles //cloudresourcemanager.googleapis.com/projects/$PROJECT_ID
gcloud iam list-grantable-roles https://www.googleapis.com/compute/v1/projects/$PROJECT_ID/zones/us-central1-a/instances/iowa1

# get uri e.g.
gcloud projects list --uri

0.11. service account

0.11.1. as an identity

export SA_EMAIL=$(gcloud iam service-accounts list \
    --filter="displayName:jenkins" --format='value(email)')
export PROJECT=$(gcloud info --format='value(config.project)')

# creaate and list sa
gcloud iam service-accounts create jenkins --display-name jenkins
gcloud iam service-accounts list
gcloud iam service-accounts list   --filter='email ~ [0-9]*-compute@.*'   --format='table(email)'

# create & list sa key  
gcloud iam service-accounts keys create jenkins-sa.json --iam-account $SA_EMAIL    
gcloud iam service-accounts keys list --iam-account=vault-admin@<project_id>.iam.gserviceaccount.com
gcloud iam service-accounts keys create connect-sa-key.json \
   --iam-account=connect-sa@${PROJECT_ID}.iam.gserviceaccount.com

gcloud projects get-iam-policy ${PROJECT} --flatten="bindings[].members" --filter="bindings.members:serviceAccount:terraform@${PROJECT_ID}.iam.gserviceaccount.com"

gcloud projects get-iam-policy ${PROJECT} \
    --flatten="bindings[].members" \
    --filter="bindings.members:user:$(gcloud config get-value core/account 2>/dev/null)"

gcloud projects add-iam-policy-binding $PROJECT  --role roles/storage.admin \
    --member serviceAccount:$SA_EMAIL
gcloud projects add-iam-policy-binding $PROJECT --role roles/compute.instanceAdmin.v1 \
    --member serviceAccount:$SA_EMAIL
gcloud projects add-iam-policy-binding $PROJECT --role roles/compute.networkAdmin \
    --member serviceAccount:$SA_EMAIL
gcloud projects add-iam-policy-binding $PROJECT --role roles/compute.securityAdmin \
    --member serviceAccount:$SA_EMAIL
gcloud projects add-iam-policy-binding $PROJECT --role roles/iam.serviceAccountActor \
    --member serviceAccount:$SA_EMAIL

# for Anthos GKE on prem
gcloud projects add-iam-policy-binding ${PROJECT} \
 --member="serviceAccount:connect-sa@${PROJECT}.iam.gserviceaccount.com" \
 --role="roles/gkehub.connect"

0.11.2. service account as a resource

# ansible impersonate as a svc account terraform@${PROJECT_ID}.iam.gserviceaccount.com
# ${SA_PROJECT_ID} is the global project storing all the service accounts
TF_SA_EMAIL=terraform@${SA_PROJECT_ID}.iam.gserviceaccount.com
ANSIBLE_SA_EMAIL="ansible@${SA_PROJECT_ID}.iam.gserviceaccount.com"
gcloud iam service-accounts add-iam-policy-binding ${TF_SA_EMAIL} \
    --project ${SA_PROJECT_ID} \
    --member "serviceAccount:$ANSIBLE_SA_EMAIL" \
    --role roles/iam.serviceAccountTokenCreator
# create a gcp project $A_PROJECT_ID under $A_FOLDER_ID
gcloud projects --impersonate-service-account=$TF_SA_EMAIL create $A_PROJECT_ID --name=$A_PROJECT_NAME --folder=$A_FOLDER_ID

# user:[email protected] impersonate as a svc account terraform@${PROJECT_ID}.iam.gserviceaccount.com
TF_SA_EMAIL=terraform@your-service-account-project.iam.gserviceaccount.com
gcloud iam service-accounts add-iam-policy-binding  $TF_SA_EMAIL --member=user:[email protected] \
--role roles/iam.serviceAccountTokenCreator

gcloud container clusters list --impersonate-service-account=terraform@${PROJECT_ID}.iam.gserviceaccount.com

gcloud iam service-accounts get-iam-policy <sa_email>, eg. 
gcloud iam service-accounts get-iam-policy secret-accessor-dev@$PROJECT_ID.iam.gserviceaccount.com --project $PROJECT_ID
bindings:
- members:
  - serviceAccount:<project-id>.svc.id.goog[default/secret-accessor-dev]
  role: roles/iam.workloadIdentityUser
etag: BwWhFqqv9aQ=
version: 1

gcloud iam service-accounts add-iam-policy-binding [email protected] --member='serviceAccount:[email protected]' --role='roles/iam.serviceAccountActor'

0.11.3. GCS bucket level

gsutil iam get gs://${BUCKET_NAME}  -p ${PROJECT_ID}
COMPUTE_ENGINE_SA_EMAIL=$(gcloud iam service-accounts list --filter="name:Compute Engine default service account" --format "value(email)")
gsutil iam ch serviceAccount:${COMPUTE_ENGINE_SA_EMAIL}:objectViewer gs://${BUCKET_NAME}

0.11.4. Custom Roles

# list predefined roles
gcloud iam roles list
# list custom roles
gcloud iam roles list --project $PROJECT_ID

# create custom role in the following 2 ways, either on project level (--project [PROJECT_ID]) or org level (--organization [ORGANIZATION_ID])
1. gcloud iam roles create editor --project $PROJECT_ID --file role-definition.yaml
2. gcloud iam roles create viewer --project $PROJECT_ID --title "Role Viewer" --description "Custom role description." --permissions compute.instances.get,compu
te.instances.list --stage ALPHA

0.12. App engine

0.13. Cloud build

# user defined
gcloud builds submit --config=cloudbuild.yaml --substitutions=_BRANCH_NAME=foo,_BUILD_NUMBER=1 .

# override built in TAG_NAME
gcloud builds submit --config=cloudbuild.yaml --substitutions=TAG_NAME=v1.0.1

0.13.1. Cloud build trigger GCE rolling replace/start

steps:
- name: 'gcr.io/cloud-builders/docker'
  args: [ 'build', '-t', 'gcr.io/$PROJECT_ID/gcp-cloudbuild-gce-angular', '.' ]
- name: 'gcr.io/cloud-builders/gcloud'
  args: [ 'beta', 'compute', 'instance-groups', 'managed', 'rolling-action', 'restart', 'gce-angular-instance-group', '--zone=us-east1-b' ]
images:
- 'gcr.io/$PROJECT_ID/gcp-cloudbuild-gce-angular'

0.14. KMS

# list all keyrings 
gcloud kms keyrings list --location global
# list all keys in my_key_ring
gcloud kms keys list --keyring my_key_ring --location global

# grant KMS IAM permission to a sv account $USER_EMAIL 
gcloud kms keyrings add-iam-policy-binding $KEYRING_NAME \
    --location global \
    --member user:$USER_EMAIL \
    --role roles/cloudkms.admin
gcloud kms keyrings add-iam-policy-binding $KEYRING_NAME \
    --location global \
    --member user:$USER_EMAIL \
    --role roles/cloudkms.cryptoKeyEncrypterDecrypter
    
# Encrypt and Decrypt in REST API
curl -v "https://cloudkms.googleapis.com/v1/projects/$DEVSHELL_PROJECT_ID/locations/global/keyRings/$KEYRING_NAME/cryptoKeys/$CRYPTOKEY_NAME:encrypt" \
  -d "{\"plaintext\":\"$PLAINTEXT\"}" \
  -H "Authorization:Bearer $(gcloud auth application-default print-access-token)"\
  -H "Content-Type:application/json" \
| jq .ciphertext -r > 1.encrypted

curl -v "https://cloudkms.googleapis.com/v1/projects/$DEVSHELL_PROJECT_ID/locations/global/keyRings/$KEYRING_NAME/cryptoKeys/$CRYPTOKEY_NAME:decrypt" \
  -d "{\"ciphertext\":\"$(cat 1.encrypted)\"}" \
  -H "Authorization:Bearer $(gcloud auth application-default print-access-token)"\
  -H "Content-Type:application/json" \
| jq .plaintext -r | base64 -d

0.15. Secret Manager

# create a secret
gcloud secrets create SECRET_NAME --replication-policy="automatic"
#create a secret version
gcloud secrets versions add "SECRET_NAME" --data-file="/path/to/file.txt"
# list
gcloud secrets list
# read
gcloud secrets versions access latest --secret=my_ssh_private_key
#update the labels (metadata) of a secret
gcloud secrets update SECRET_NAME --update-labels=KEY=VALUE

0.16. Compute Engine

0.16.1. gcloud command for creating an instance?

from web console

gcloud compute instances create [INSTANCE_NAME] \
  --image-family [IMAGE_FAMILY] \
  --image-project [IMAGE_PROJECT] \
  --create-disk image=[DISK_IMAGE],image-project=[DISK_IMAGE_PROJECT],size=[SIZE_GB],type=[DISK_TYPE]
  
gcloud compute instances create micro1 --zone=us-west1-a --machine-type=f1-micro --subnet=default --network-tier=PREMIUM --maintenance-policy=MIGRATE --service-account=398028291895-compute@developer.gserviceaccount.com --scopes=https://www.googleapis.com/auth/devstorage.read_only,https://www.googleapis.com/auth/logging.write,https://www.googleapis.com/auth/monitoring.write,https://www.googleapis.com/auth/servicecontrol,https://www.googleapis.com/auth/service.management.readonly,https://www.googleapis.com/auth/trace.append --min-cpu-platform=Automatic --image=debian-9-stretch-v20180510 --image-project=debian-cloud --boot-disk-size=10GB --boot-disk-type=pd-standard --boot-disk-device-name=micro1

0.16.2. list compute images

gcloud compute images list --filter=name:debian --uri
https://www.googleapis.com/compute/v1/projects/debian-cloud/global/images/debian-8-jessie-v20180109
https://www.googleapis.com/compute/v1/projects/debian-cloud/global/images/debian-9-stretch-v20180105

# Use the following command to see available non-Shielded VM Windows Server images
gcloud compute images list --project windows-cloud --no-standard-images
# Use the following command to see a list of available Shielded VM images, including Windows images
gcloud compute images list --project gce-uefi-images --no-standard-images

0.16.3. list an instance

gcloud compute instances list --filter="zone:us-central1-a"
gcloud compute instances list --project=dev --filter="name~^es"
gcloud compute instances list --project=dev --filter=name:kafka --format="value(name,INTERNAL_IP)"
gcloud compute instances list --filter=tags:kafka-node
gcloud compute instances list --filter='machineType:g1-small'

# list gke instances with an autogenerated tag from GKE 
gcloud compute instances list --filter='tags.items:(gke-whatever)'

0.16.4. move instance

gcloud compute instances move <instance_wanna_move> --destination-zone=us-central1-a --zone=us-central1-c

0.16.5. ssh & scp

#--verbosity=debug is great for debugging, showing the SSH command 
# the following is a real word example for running a bastion server that talks to a GKE cluster (master authorized network)
gcloud compute ssh --verbosity=debug <instance_name> --command "kubectl get nodes"

gcloud compute scp  --recurse ../manifest <instance_name>:

0.16.6. SSH via IAP

# find out access-config-name's name
gcloud compute instances describe oregon1
# remove the external IP
gcloud compute instances delete-access-config  oregon1 --access-config-name "External NAT"
# connect via IAP, assuming the IAP is granted to the account used for login. 
gcloud beta compute ssh oregon1 --tunnel-through-iap

0.16.7. ssh port forwarding for elasticsearch

gcloud compute --project "foo" ssh --zone "us-central1-c" "elasticsearch-1"  --ssh-flag="-L localhost:9200:localhost:9200"

The 2nd localhost is relative to elasticsearch-1`

0.16.8. ssh reverse port forwarding

for example, how to connect to home server's flask server (tcp port 5000) for a demo or a local game server in development

GOOGLE_CLOUD_PROJECT=$(gcloud config get-value project)
gcloud compute --project "${GOOGLE_CLOUD_PROJECT}" ssh --zone "us-west1-c" --ssh-flag="-v -N -R :5000:localhost:5000" "google_cloud_bastion_server"

0.16.9. generate ssh config

gcloud compute config-ssh

0.16.10. Windows RDP reset windows password

returns the IP and password for creating the RDP connection.

gcloud compute reset-windows-password instance --user=jdoe

ip_address: 104.199.119.166
password:   Ks(;_gx7Bf2d.NP
username:   jode

0.16.11. debugging

0.16.12. instance level metadata

curl -s "http://metadata.google.internal/computeMetadata/v1/instance/?recursive=true&alt=text" -H "Metadata-Flavor: Google"
leader=$(curl -s "http://metadata.google.internal/computeMetadata/v1/instance/attributes/leader" -H "Metadata-Flavor: Google")

0.16.13. project level metadata

gcloud compute project-info describe
gcloud compute project-info describe --flatten="commonInstanceMetadata[]"

0.16.14. instances, template, target-pool and instance group

cat << EOF > startup.sh
#! /bin/bash
apt-get update
apt-get install -y nginx
service nginx start
sed -i -- 's/nginx/Google Cloud Platform - '"\$HOSTNAME"'/' /var/www/html/index.nginx-debian.html
EOF

gcloud compute instance-templates create nginx-template  --metadata-from-file startup-script=startup.sh
gcloud compute target-pools create nginx-pool
gcloud compute instance-groups managed create nginx-group \
         --base-instance-name nginx \
         --size 2 \
         --template nginx-template \
         --target-pool nginx-pool

0.16.15. MIG with startup and shutdown scripts

https://cloud.google.com/vpc/docs/special-configurations#multiple-natgateways

gsutil cp gs://nat-gw-template/startup.sh .

gcloud compute instance-templates create nat-1 \
    --machine-type n1-standard-2 --can-ip-forward --tags natgw \
    --metadata-from-file=startup-script=startup.sh --address $nat_1_ip

gcloud compute instance-templates create nat-2 \
    --machine-type n1-standard-2 --can-ip-forward --tags natgw \
    --metadata-from-file=startup-script=startup.sh  --address $nat_2_ip

0.16.16. disk snapshot

gcloud compute disks snapshot kafka-data1-1 --async --snapshot-names=kafka-data-1 --project project_a --zone us-west1-a
Use [gcloud compute operations describe URI] command to check the status of the operation(s).

0.16.17. regional disk

 gcloud beta compute instance attach-disk micro1 --disk pd-west1 --disk-scope regional

0.17. Networking

0.17.1. network and subnets

 gcloud compute networks create privatenet --subnet-mode=custom
 gcloud compute networks subnets create privatesubnet-us --network=privatenet --region=us-central1 --range=172.16.0.0/24
 gcloud compute networks subnets create privatesubnet-eu --network=privatenet --region=europe-west1 --range=172.20.0.0/20
 gcloud compute networks subnets list --sort-by=NETWORK

0.17.2. route

tag the instances with no-ip

gcloud compute instances add-tags existing-instance --tags no-ip
gcloud compute routes create no-ip-internet-route \
    --network custom-network1 \
    --destination-range 0.0.0.0/0 \
    --next-hop-instance nat-gateway \
    --next-hop-instance-zone us-central1-a \
    --tags no-ip --priority 800

0.17.3. firewall rules

# allow SSH, RDP and ICMP for the given network
gcloud compute firewall-rules create managementnet-allow-icmp-ssh-rdp --direction=INGRESS --priority=1000 --network=managementnet --action=ALLOW --rules=tcp:22,3389,icmp --source-ranges=0.0.0.0/0
# allow internal from given source range
gcloud compute firewall-rules create mynetwork-allow-internal --network \
mynetwork --action ALLOW --direction INGRESS --rules all \
--source-ranges 10.128.0.0/9
gcloud compute firewall-rules list --filter="network:mynetwork"

## DENY
gcloud compute firewall-rules create mynetwork-deny-icmp \
--network mynetwork --action DENY --direction EGRESS --rules icmp \
--destination-ranges 10.132.0.2 --priority 500
gcloud compute firewall-rules list \
--filter="network:mynetwork AND name=mynetwork-deny-icmp"

# sort-by
gcloud compute firewall-rules list --sort-by=NETWORK

0.17.4. layer 4 network lb

gcloud compute firewall-rules create www-firewall --allow tcp:80
gcloud compute forwarding-rules create nginx-lb \
         --region us-central1 \
         --ports=80 \
         --target-pool nginx-pool
         
gcloud compute firewall-rules list --sort-by=NETWORK

0.17.5. layer 7 http lb

gcloud compute http-health-checks create http-basic-check
gcloud compute instance-groups managed \
       set-named-ports nginx-group \
       --named-ports http:80

gcloud compute backend-services create nginx-backend \
      --protocol HTTP --http-health-checks http-basic-check --global
      
gcloud compute backend-services add-backend nginx-backend \
    --instance-group nginx-group \
    --instance-group-zone us-central1-a \
    --global  

gcloud compute url-maps create web-map \
    --default-service nginx-backend

gcloud compute target-http-proxies create http-lb-proxy \
    --url-map web-map
    
gcloud compute forwarding-rules create http-content-rule \
        --global \
        --target-http-proxy http-lb-proxy \
        --ports 80
gcloud compute forwarding-rules list

0.17.6. forwarding-rules

gcloud compute forwarding-rules list --filter=$(dig +short <dns_name>)
gcloud compute forwarding-rules describe my-forwardingrule --region us-central1
gcloud compute forwarding-rules describe my-http-forwardingrule --global

0.17.7. address

# get the external IP address of the instance
gcloud compute instances describe single-node \
     --format='value(networkInterfaces.accessConfigs[0].natIP)
     
gcloud compute addresses describe https-lb --global --format json

# list all IP addresses
gcloud projects list --format='value(project_id)' | xargs -I {} gcloud compute addresses list --format='value(address)' --project {}  2>/dev/null | sort | uniq -c

0.18. interconnect

# list Google Compute Engine interconnect locations
gcloud compute interconnects locations list

0.19. GCP managed ssl certificate

gcloud beta compute ssl-certificates create example-mydomain --domains example.mydomain.com
gcloud beta compute ssl-certificates list
gcloud beta compute ssl-certificates describe example-mydomain
# It takes 30mins+ to provision the TLS, one of conditions is the target-https-proxies needs to be associated with the cert.
gcloud beta compute target-https-proxies list

0.20. StackDriver logging

gcloud logging read "timestamp >= \"2018-04-19T00:30:00Z\"  and logName=projects/${project_id}/logs/requests and resource.type=http_load_balancer" --format="csv(httpRequest.remoteIp,httpRequest.requestUrl,timestamp)" --project=${project_id}

0.21. Service

0.21.1. list service available

gcloud services list --available

0.21.2. Enable Service

# chain 
gcloud services enable cloudapis.googleapis.com && \
cloudresourcemanager.googleapis.com && \
compute.googleapis.com 

# or not chain
gcloud services enable container.googleapis.com
gcloud services enable containerregistry.googleapis.com
gcloud services enable cloudbuild.googleapis.com
gcloud services enable iam.googleapis.com
gcloud services enable logging.googleapis.com
gcloud services enable monitoring.googleapis.com
gcloud services enable storage-api.googleapis.com
gcloud services enable storage-component.googleapis.com
gcloud services enable sourcerepo.googleapis.com

function enable-service() {
  SERVICE=$1
  if [[ $(gcloud services list --format="value(serviceConfig.name)" \
                                --filter="serviceConfig.name:$SERVICE" 2>&1) != \
                                "$SERVICE" ]]; then
    echo "Enabling $SERVICE"
    gcloud services enable $SERVICE
  else
    echo "$SERVICE is already enabled"
  fi
}

enable-service container.googleapis.com

0.22. Client libraries you can use to connect to Google APIs

0.23. chaining gcloud commands

gcloud compute forwarding-rules list --format 'value(NAME)' \
| xargs -I {}  gcloud compute forwarding-rules delete {}  --region us-west1 -q

gcloud projects list --format='value(project_id)' \
| xargs -I {} gcloud compute addresses list --format='value(address)' --project {}  2>/dev/null | sort | uniq -c

gcloud compute instances list --filter=elasticsearch --format='value(NAME)' \
| xargs -I {} -p gcloud compute instances stop {}
gcloud compute instances list --filter=elasticsearch --format='value(INTERNAL_IP)' \
| xargs -I {} ssh {} "sudo chef-client"

# delete non default routes
gcloud compute routes list --filter="NOT network=default" --format='value(NAME)' \
| xargs -I {} gcloud compute routes delete -q {}

0.24. one liner to purge GCR images given a date

DATE=2018-10-01
IMAGE=<project_id>/<image_name>
gcloud container images list-tags gcr.io/$IMAGE --limit=unlimited --sort-by=TIMESTAMP   \
--filter="NOT tags:* AND timestamp.datetime < '${DATE}'" --format='get(digest)' | \
while read digest;do gcloud container images delete -q --force-delete-tags gcr.io/$IMAGE@$digest ;done

0.25. GKE

# create a private cluster
gcloud beta container clusters create private-cluster \
    --private-cluster \
    --master-ipv4-cidr 172.16.0.16/28 \
    --enable-ip-alias \
    --create-subnetwork ""


gcloud compute networks subnets create my-subnet \
    --network default \
    --range 10.0.4.0/22 \
    --enable-private-ip-google-access \
    --region us-central1 \
    --secondary-range my-svc-range=10.0.32.0/20,my-pod-range=10.4.0.0/14

gcloud beta container clusters create private-cluster2 \
    --private-cluster \
    --enable-ip-alias \
    --master-ipv4-cidr 172.16.0.32/28 \
    --subnetwork my-subnet \
    --services-secondary-range-name my-svc-range \
    --cluster-secondary-range-name my-pod-range
 
 gcloud container clusters update private-cluster2 \
    --enable-master-authorized-networks \
    --master-authorized-networks <external_ip_of_kubectl_instance>

# create a GKE cluster with CloudRun,Istio, HPA enabled
gcloud beta container clusters create run-gke \
  --addons HorizontalPodAutoscaling,HttpLoadBalancing,Istio,CloudRun \
  --scopes cloud-platform \
  --zone us-central1-a \
  --machine-type n1-standard-4 \
  --enable-stackdriver-kubernetes \
  --no-enable-ip-alias

export WORKLOAD_POOL=${PROJECT_ID}.svc.id.goog
export MESH_ID="proj-${PROJECT_NUMBER}"
gcloud bea contoner clusters create ${CLUSTER_NAME} \
    --machine-type=n1-standard-4 \
    --num-nodes=4 \
    --workload-pool=${WORKLOAD_POOL} \
    --enable-stackdriver-kubernetes \
    --subnetwork=default  \
    --labels mesh_id=${MESH_ID}

# create a VPC native cluster
gcloud container clusters create k1 \
--network custom-ip-vpc --subnetwork subnet-alias \
--enable-ip-alias --cluster-ipv4-cidr=/16   --services-ipv4-cidr=/22

# get the GKE endpoint
gcloud container clusters describe mycluster --format='get(endpoint)'

# generate a ~/.kube/config for private cluster with private endpoint
gcloud container clusters get-credentials private-cluster --zone us-central1-a --internal-ip

0.25.1. create a GKE cluster with label and query it later

gcloud container clusters create example-cluster --labels env=dev
gcloud container clusters list --filter resourceLabels.env=dev

0.26. SQL

gcloud sql instances create flights \
    --tier=db-n1-standard-1 --activation-policy=ALWAYS
gcloud sql users set-password root --host % --instance flights \
 --password Passw0rd

# authorizes the IP
export ADDRESS=$(wget -qO - http://ipecho.net/plain)/32
gcloud sql instances patch flights --authorized-networks $ADDRESS

## mysql cli to creat table
MYSQLIP=$(gcloud sql instances describe \
flights --format="value(ipAddresses.ipAddress)")
mysql --host=$MYSQLIP --user=root \
      --password --verbose < create_table.sql
## import data in csv
mysqlimport --local --host=$MYSQLIP --user=root --password \
--ignore-lines=1 --fields-terminated-by=',' bts flights.csv-*
mysql --host=$MYSQLIP --user=root  --p

0.27. Cloud Run

# deploy a service on Cloud Run in us-central1 and allow unauthenticated user
gcloud beta run deploy --image gcr.io/${PROJECT-ID}/helloworld --platform managed --region us-central1 --allow-unauthenticated

# list services
gcloud beta run services list
# get endpoint url for a service
gcloud beta run services describe <service_name> --format="get(status.url)"

export SERVICE_URL="$(gcloud run services list --platform managed --filter=${SERVICE_NAME} --format='value(URL)')"

# Give service account permission to invoke the Cloud Run service
export SERVICE_ACCOUNT=cloudrun-scheduler-sa
gcloud iam service-accounts create ${SERVICE_ACCOUNT} \
   --display-name "Cloud Run Scheduler Service Account"
gcloud run services add-iam-policy-binding event-display-scheduled \
   --member=serviceAccount:${SERVICE_ACCOUNT}@${PROJECT_ID}.iam.gserviceaccount.com \
   --role=roles/run.invoker

0.28. Machine Learning

brew install bat
gcloud ml language analyze-entities --content="Michelangelo Caravaggio, Italian painter, is known for 'The Calling of Saint Matthew'." | bat  -l json

0.29. Deployment Manager

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