feat: Adds option "download-only" to llmd-installer.sh #209 #294 (#296)

* feat: Adds option "download-only" to llmd-installer.sh #209 #294

This PR adds a new command line option to llmd-installer.sh, -b or
--download-only.

The rationale behind it is exposed on #295

Signed-off-by: maugustosilva <[email protected]>

* Switched from `--download-only` to `--download-pvc-only`

Signed-off-by: maugustosilva <[email protected]>

---------

Signed-off-by: maugustosilva <[email protected]>

Author: maugustosilva

quickstart/llmd-installer.sh

@@ -19,6 +19,7 @@ VALUES_FILE="values.yaml"
 DEBUG=""
 SKIP_INFRA=false
 INFRA_ONLY=false
+DOWNLOAD_ONLY=false
 DISABLE_METRICS=false
 MONITORING_NAMESPACE="llm-d-monitoring"
 DOWNLOAD_MODEL=""
@@ -46,6 +47,7 @@ Options:
   -d, --debug                      Add debug mode to the helm install
   -i, --skip-infra                 Skip the infrastructure components of the installation
   -e, --infra-only                 Only deploy infrastructure components
+  -b, --download-pvc-only          Only download model to a PVC
   -m, --disable-metrics-collection Disable metrics collection (Prometheus will not be installed)
   -D, --download-model             Download the model to PVC from Hugging Face
   -t, --download-timeout           Timeout for model download job
@@ -128,6 +130,7 @@ parse_args() {
       -d|--debug)                      DEBUG="--debug"; shift;;
       -i|--skip-infra)                 SKIP_INFRA=true; shift;;
       -e|--infra-only)                 INFRA_ONLY=true; shift;;
+      -b|--download-pvc-only)          DOWNLOAD_ONLY=true; shift;;
       -m|--disable-metrics-collection) DISABLE_METRICS=true; shift;;
       -D|--download-model)             DOWNLOAD_MODEL="$2"; shift 2 ;;
       -t|--download-timeout)           DOWNLOAD_TIMEOUT="$2"; shift 2 ;;
@@ -406,6 +409,10 @@ install() {
   log_success "ModelService CRD applied"
 
   create_pvc_and_download_model_if_needed
+  if [[ "${DOWNLOAD_ONLY}" == "true" ]]; then
+    log_info "Option \"-b/--download-pvc-only\" specified, will end execution"
+    return 0
+  fi
 
   helm repo add bitnami  https://charts.bitnami.com/bitnami
   log_info "🛠️ Building Helm chart dependencies..."