snapshots for windows

Author: Nils K

05_windows/30_create_snapshot_windows.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+# Create snapshot of Compute Engine persistent boot disk
+
+################################################################################
+# INCLUDE FUNCTIONS
+################################################################################
+
+MY_INCLUDE='../inc/include.sh'
+# ignore SC1090
+# shellcheck source=/dev/null
+if ! source "$MY_INCLUDE"; then
+	ME=$(basename "$0")
+	BASE_PATH=$(dirname "$0")
+	echo;echo "× Can not read required include file '$MY_INCLUDE'";echo
+	echo      "  Please start the script directly in the directory:"
+	echo      "    cd $BASE_PATH && bash $ME";echo
+	exit 9
+fi
+
+################################################################################
+# MAIN
+################################################################################
+
+# Create snapshot of Compute Engine persistent boot disk
+# In:
+#    MY_GCP_GCE_DISK_BOOT_NAME
+#    MY_GCP_REGION
+#    MY_GCP_ZONE
+#    MY_GCP_PROJECT
+create_snapshot
+
+# Check MY_WARNING and exit with echo_success or echo_failure
+# In: MY_WARNING
+check_warning_and_exit "Compute Engine disk snapshot created successfully"

05_windows/31_create_from_snapshot_windows.sh

@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+
+# Create Compute Engine persistent boot disk from last snapshot and
+# create virtual machine instance with created disk
+
+################################################################################
+# INCLUDE FUNCTIONS
+################################################################################
+
+MY_INCLUDE='../inc/include.sh'
+# ignore SC1090
+# shellcheck source=/dev/null
+if ! source "$MY_INCLUDE"; then
+	ME=$(basename "$0")
+	BASE_PATH=$(dirname "$0")
+	echo;echo "× Can not read required include file '$MY_INCLUDE'";echo
+	echo      "  Please start the script directly in the directory:"
+	echo      "    cd $BASE_PATH && bash $ME";echo
+	exit 9
+fi
+
+################################################################################
+# MAIN
+################################################################################
+
+# Get last Compute Engine boot disk snapshot from specific instance
+# In: MY_GCP_GCE_NAME
+# Out: MY_GCE_SNAPSHOT_NAME
+get_last_snapshot_vm
+
+# Use snapshot to create a new boot disk
+# In: MY_GCE_SNAPSHOT_NAME, MY_GCP_GCE_DISK_BOOT_NAME, MY_GCP_GCE_DISK_BOOT_TYPE
+create_disk_from_snapshot
+
+# Create service account for virtual machine
+# In: MY_GCP_SA_NAME, MY_GCP_SA_DISPLAY_NAME, MY_GCP_SA_DESCRIPTION
+create_service_account
+# Get service account identifier or exit_with_failure
+# In: MY_GCP_SA_NAME
+# Out: MY_GCP_SA_ID
+get_service_account_identifier
+
+# Add IAM roles (policy binding) to service account
+# In: MY_GCP_SA_ID, MY_GCP_SA_ROLES
+add_projects_policy_binding
+
+# Add service account read access to storage bucket
+# In: MY_GCP_SA_ID, MY_GCP_STORAGE
+add_read_access_storage
+
+# Create GCE virtual machine instance with already created disk
+# In:
+#    MY_GCP_GCE_NAME
+#    MY_GCP_ZONE
+#    MY_GCP_GCE_TYPE
+#    MY_GCP_SUBNET
+#    MY_GCP_SA_ID
+#    MY_GCP_GCE_DISK_BOOT_NAME
+create_disk_vm
+
+# Check MY_WARNING and exit with echo_success or echo_failure
+# In: MY_WARNING
+check_warning_and_exit "Compute Engine virtual machine instance set up successfully"

05_windows/39_delete_snapshots_windows.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+# Delete all Compute Engine boot disk snapshots from specific instance
+
+################################################################################
+# INCLUDE FUNCTIONS
+################################################################################
+
+MY_INCLUDE='../inc/include.sh'
+# ignore SC1090
+# shellcheck source=/dev/null
+if ! source "$MY_INCLUDE"; then
+	ME=$(basename "$0")
+	BASE_PATH=$(dirname "$0")
+	echo;echo "× Can not read required include file '$MY_INCLUDE'";echo
+	echo      "  Please start the script directly in the directory:"
+	echo      "    cd $BASE_PATH && bash $ME";echo
+	exit 9
+fi
+
+################################################################################
+# MAIN
+################################################################################
+
+# Get last Compute Engine boot disk snapshot from specific instance
+# In: MY_GCP_GCE_NAME
+delete_all_snapshots_vm
+
+# Check MY_WARNING and exit with echo_success or echo_failure
+# In: MY_WARNING
+check_warning_and_exit "All snapshots successfully deleted"

05_windows/README.md

@@ -49,6 +49,34 @@ Information without guarantee.
 * `99_delete_windows.sh`         : Delete Compute Engine virtual machine instance and service account
 * `ZZ_debug.sh`                  : For debugging only
 
+### Snapshots
+
+If you don't need your VM for a long time you can make a snapshot from the disk.
+You can then delete the VM and the disk (`99_delete_windows.sh`).
+If you need the VM with the data again, you can create a new fresh VM from the snapshot.
+
+* `30_create_snapshot_windows.sh`      : Create snapshot of Compute Engine persistent boot disk
+* `31_create_from_snapshot_windows.sh` : Create Compute Engine persistent boot disk from last snapshot and create virtual machine instance with created disk
+* `39_delete_snapshots_windows.sh`     : Delete all Compute Engine boot disk snapshots from specific instance
+
+You will then save the [disk cost](https://cloud.google.com/compute/all-pricing#disk) and pay only the very cheap [snapshot price](https://cloud.google.com/compute/all-pricing#disk).
+
+* Regional snapshot storage $0.029 per GB in `europe-north1` (Finland)
+* Multi-regional snapshot storage $0.0286 per GB in `eu` (European Union) [DEFAULT]
+
+Example:
+
+```shell
+# Create snapshot
+bash 30_create_snapshot_windows.sh
+# Delete SA, Disk and VM
+bash 99_delete_windows.sh
+# Later, create new VM from snapshot
+bash 31_create_from_snapshot_windows.sh
+# Delete all snapshots
+bash 39_delete_snapshots_windows.sh
+```
+
 ## RDP
 
 Connect to Windows Server via RDP.