ref: adjust GCP instances resources to better fit requirements (#8986)

Previously, most of our deployed instances needed to sync the whole blockchain from genesis, but after implementing the mounting of cached states for the release instances, this is no longer required.

Main changes:
- Reduce the boot disk size for CD images to 10GB (in CI Zebra might need to rebuild based on test flags, requiring more disk space)
- Use `pd-standard` instead of `pd-ssd` for the boot disk
- Use `pd-balanced` instead of `pd-ssd` for the mounted disk (where most of the reads and writes happens)
- Change our `GCP_SMALL_MACHINE` from `c2-standard-4` (vCPUs: 4, RAM: 16 GiB) to `c2d-standard-2` (vCPUs: 2, RAM: 8 GiB)
- Keep long running tests `is_long_test` with `GCP_LARGE_MACHINE` (`c2d-standard-16`) and other with the new `GCP_SMALL_MACHINE`  configuration (`c2d-standard-2`)

.github/workflows/cd-deploy-nodes-gcp.yml

@@ -276,7 +276,7 @@ jobs:
       - name: Create instance template for ${{ matrix.network }}
         run: |
           DISK_NAME="zebrad-cache-${{ env.GITHUB_HEAD_REF_SLUG_URL || env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }}-${NETWORK}"
-          DISK_PARAMS="name=${DISK_NAME},device-name=${DISK_NAME},size=400GB,type=pd-ssd"
+          DISK_PARAMS="name=${DISK_NAME},device-name=${DISK_NAME},size=400GB,type=pd-balanced"
           if [ -n "${{ env.CACHED_DISK_NAME }}" ]; then
             DISK_PARAMS+=",image=${{ env.CACHED_DISK_NAME }}"
           elif [ ${{ inputs.no_cached_disk && github.event_name == 'workflow_dispatch' }} ]; then
@@ -287,8 +287,8 @@ jobs:
           fi
           gcloud compute instance-templates create-with-container zebrad-${{ needs.versioning.outputs.major_version || env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }}-${NETWORK} \
           --machine-type ${{ vars.GCP_SMALL_MACHINE }} \
-          --boot-disk-size 50GB \
-          --boot-disk-type=pd-ssd \
+          --boot-disk-size=10GB \
+          --boot-disk-type=pd-standard \
           --image-project=cos-cloud \
           --image-family=cos-stable \
           --network-interface=subnet=${{ vars.GCP_SUBNETWORK }} \
@@ -388,7 +388,7 @@ jobs:
       - name: Manual deploy of a single ${{ inputs.network }} instance running zebrad
         run: |
           DISK_NAME="zebrad-cache-${{ env.GITHUB_HEAD_REF_SLUG_URL || env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }}-${NETWORK}"
-          DISK_PARAMS="name=${DISK_NAME},device-name=${DISK_NAME},size=400GB,type=pd-ssd"
+          DISK_PARAMS="name=${DISK_NAME},device-name=${DISK_NAME},size=400GB,type=pd-balanced"
           if [ -n "${{ env.CACHED_DISK_NAME }}" ]; then
             DISK_PARAMS+=",image=${{ env.CACHED_DISK_NAME }}"
           elif [ ${{ inputs.no_cached_disk && github.event_name == 'workflow_dispatch' }} ]; then
@@ -399,8 +399,8 @@ jobs:
           fi
           gcloud compute instances create-with-container "zebrad-${{ env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }}-${NETWORK}" \
           --machine-type ${{ vars.GCP_SMALL_MACHINE }} \
-          --boot-disk-size 50GB \
-          --boot-disk-type=pd-ssd \
+          --boot-disk-size=10GB \
+          --boot-disk-type=pd-standard \
           --image-project=cos-cloud \
           --image-family=cos-stable \
           --network-interface=subnet=${{ vars.GCP_SUBNETWORK }} \

.github/workflows/manual-zcashd-deploy.yml

@@ -64,8 +64,8 @@ jobs:
       - name: Create instance template
         run: |
           gcloud compute instance-templates create-with-container zcashd-${{ env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }} \
-          --boot-disk-size 10GB \
-          --boot-disk-type=pd-ssd \
+          --boot-disk-size=10GB \
+          --boot-disk-type=pd-standard \
           --image-project=cos-cloud \
           --image-family=cos-stable \
           --container-stdin \

.github/workflows/sub-deploy-integration-tests-gcp.yml

@@ -188,18 +188,18 @@ jobs:
         shell: /usr/bin/bash -x {0}
         run: |
           NAME="${{ inputs.test_id }}-${{ env.GITHUB_SHA_SHORT }}"
-          DISK_PARAMS="size=400GB,type=pd-ssd,name=${NAME},device-name=${NAME}"
+          DISK_PARAMS="size=400GB,type=pd-balanced,name=${NAME},device-name=${NAME}"
           if [ -n "${{ env.CACHED_DISK_NAME }}" ]; then
             DISK_PARAMS+=",image=${{ env.CACHED_DISK_NAME }}"
           fi
           gcloud compute instances create-with-container "${{ inputs.test_id }}-${{ env.GITHUB_REF_SLUG_URL }}-${{ env.GITHUB_SHA_SHORT }}" \
-          --boot-disk-size 50GB \
-          --boot-disk-type pd-ssd \
+          --boot-disk-size=50GB \
+          --boot-disk-type=pd-ssd \
           --image-project=cos-cloud \
           --image-family=cos-stable \
           --create-disk="${DISK_PARAMS}" \
           --container-image=gcr.io/google-containers/busybox \
-          --machine-type ${{ vars.GCP_LARGE_MACHINE }} \
+          --machine-type ${{ inputs.is_long_test && vars.GCP_LARGE_MACHINE || vars.GCP_SMALL_MACHINE }} \
           --network-interface=subnet=${{ vars.GCP_SUBNETWORK }} \
           --scopes cloud-platform \
           --metadata=google-monitoring-enabled=TRUE,google-logging-enabled=TRUE \