This little script is used to resize and repartition disks in GKE.
Configure gcloud if you haven't yet. You also need to define a zone inside your config.
./dke-disk-resizer <diskName> <newDiskSizeInGb>
Example:
./dke-disk-resizer my-disk 500
You can also use it directly without saving:
curl -s -L http://bit.ly/2oTgiwP | bash /dev/stdin <diskName> <diskSize>
| #! /bin/bash | |
| # | |
| # Script to clone a vm to another project by creating a snapshot, a new disk and a new vm. | |
| # does only copy the bootdisk | |
| # check below for parameters | |
| SOURCE_PROJECT=$1 | |
| SOURCE_ZONE=$2 | |
| SOURCE_VM_NAME=$3 | |
| TARGET_PROJECT=$4 | |
| TARGET_ZONE=$5 | |
| TARGET_VM_NAME=${6:SOURCE_VM_NAME} | |
| random-string() | |
| { | |
| cat /dev/urandom | tr -dc 'a-z0-9' | fold -w ${1:-5} | head -n 1 | |
| } | |
| SOURCE_MACHINE_SETTINGS=$(gcloud --project=$SOURCE_PROJECT compute instances list --filter="name=($SOURCE_VM_NAME)" --zones=$SOURCE_ZONE --format=json) | |
| SOURCE_DISK_NAME=$(echo $SOURCE_MACHINE_SETTINGS|jq -r '.[0].disks[0].deviceName') | |
| MACHINE_TYPE=$(echo $SOURCE_MACHINE_SETTINGS|jq -r '.[0].machineType') | |
| echo "Found source disk: $SOURCE_DISK_NAME" | |
| SNAPSHOT_NAME="$SOURCE_DISK_NAME-$(date --iso-8601)-$(random-string)" | |
| echo "Creating snapshot: $SNAPSHOT_NAME" | |
| # create snapshot | |
| gcloud --project=$SOURCE_PROJECT compute disks snapshot $SOURCE_DISK_NAME --zone=$SOURCE_ZONE --snapshot-names $SNAPSHOT_NAME | |
| # get snapshot settings | |
| SOURCE_SNAPSHOT_PATH=$(gcloud --project=$SOURCE_PROJECT compute snapshots list --filter="name=($SNAPSHOT_NAME)" --format=json |jq -r '.[0].selfLink') | |
| #create disk from snapshot in other project | |
| echo "Creating new disk in project=$TARGET_PROJECT from snapshot: $SNAPSHOT_NAME. This can take a while..." | |
| gcloud compute disks create $SOURCE_DISK_NAME --source-snapshot="$SOURCE_SNAPSHOT_PATH" --project=$TARGET_PROJECT --zone=$TARGET_ZONE | |
| echo "Spinning up vm with new disk..." | |
| gcloud --project=$TARGET_PROJECT compute instances create --zone=$TARGET_ZONE --boot-disk-device-name=$SOURCE_DISK_NAME --machine-type=$MACHINE_TYPE | |
| # delete snapshot | |
| echo "You can delete the snapshot now" | |
| gcloud --project=$SOURCE_PROJECT compute snapshots delete $SNAPSHOT_NAME |
| #! /bin/bash | |
| # | |
| # Usage: | |
| # ./gke-disk-resizer <diskName> <newDiskSize> | |
| # | |
| # gcloud must be configured to the right project and must have a zone specified! | |
| # | |
| set -e | |
| DISK_NAME=$1 | |
| DISK_SIZE=$2 | |
| ZONE=$(gcloud config get-value compute/zone) | |
| PROJECT=$(gcloud config get-value project) | |
| NODE_NAME=$(gcloud compute disks list --filter "selfLink=https://www.googleapis.com/compute/v1/projects/${PROJECT}/zones/${ZONE}/disks/${DISK_NAME}" --format flattened |grep users | awk '{print $2}' | awk -F'/' '{print $(NF)}') | |
| echo "Disk ${DISK_NAME} is attached to node ${NODE_NAME}" | |
| echo "Resizing disk ..." | |
| gcloud compute disks resize ${DISK_NAME} --size ${DISK_SIZE} | |
| DEV=$(gcloud compute ssh ${NODE_NAME} --command="sudo df -h |grep ${DISK_NAME} ") | |
| DEV=$(echo ${DEV}| awk '{print $1}') | |
| echo "Device is: ${DEV}" | |
| echo "Resizing partition" | |
| gcloud compute ssh ${NODE_NAME} --command="sudo resize2fs ${DEV}" | |
| gcloud compute ssh ${NODE_NAME} --command="sudo df -h | grep ${DISK_NAME}" | |
| echo "Done" |