GCP notes

content/docs/devops/gcp/gcloud.md

@@ -40,8 +40,8 @@ gcloud config configurations list
 
 ```sh
 gcloud components list
-gcloud components install COMPONENT  # COMPONENT: compute, appengine or kubernetes etc..
-gcloud components remove COMPONENT  # remove a component from the installation, e.g., gcloud compute
+gcloud components install COMPONENT
+gcloud components remove COMPONENT
 gcloud components update
 ```
 
@@ -50,5 +50,83 @@ gcloud components update
 ```sh
 gcloud projects list
 gcloud config get-value project
-gcloud config set project PROJECT_ID  # replace with your Project ID.
+gcloud config set project PROJECT_ID
+```
+
+## Switch account
+
+```sh
+gcloud config configurations list
+gcloud config configurations activate ACCOUNT
+ls ~/.config/gcloud/configurations
+gcloud config configurations describe ACCOUNT
+# you can delete non-active configuration
+gcloud config configurations delete ACCOUNT
+```
+
+## Connect to Cloud Shell
+
+```sh
+# create key-pair and connect
+gcloud alpha cloud-shell ssh
+```
+
+## Create a VPC
+
+In Google Cloud VPC is global, it spans multiple regions.
+Subnets are regional and span multiple zones within a region.
+This is different from AWS.
+
+Subnets have unique names across all VPCs.
+You need to allow access to the subnet by creating firewall rules.
+
+```sh
+gcloud compute networks create vpc-1 --description "Testing" --subnet-mode custom
+gcloud compute firewall-rules create vpc1-fw-allow-ssh --network vpc-1 --allow tcp:22
+gcloud compute networks subnets create vpc1-euw2-1 --network vpc-1 --region europe-west2 --range 10.0.1.0/24
+
+gcloud compute networks list
+gcloud compute networks subnets list
+gcloud compute networks subnets list --network vpc-1
+```
+
+Subnets and networks can be deleted if there are no resources running in them.
+
+```sh
+gcloud compute networks subnets delete vpc1-euw2-1 --region europe-west2
+gcloud compute firewall-rules delete vpc1-fw-allow-ssh
+gcloud compute networks delete vpc-1
+```
+
+## Virtual machines
+
+Connect to the VM:
+
+```sh
+gcloud compute instances list
+gcloud compute ssh vm-1
+```
+
+Stop the VM before creating a disk snapshot.
+
+```sh
+# todo
+```
+
+## Managed instance groups
+
+- create instance template
+- create instance groups and add instances to it
+
+```sh
+# todo
+# gcloud compute instance-templates create my-template --image-family centos-7 --machine-type f2-micro
+# gcloud compute target-pools create MY_POOL --target-http-proxies PROXY
+# gcloud compute instance-groups managed create my-ig --zone us-central1-a —target-size TARGET_SIZE
+```
+
+## Instance group autoscaling
+
+```sh
+# todo
 ```