Remove hardcoded cluster names from remote scripts

Security improvement: No longer default to tensor01/tensor02 (private clusters).

Changes:
- All 3 scripts now require --cluster flag (no default)
- Removed tensor01/tensor02 from help text examples
- Updated examples to use generic names (mycluster, gpucluster)
- Added validation: scripts exit with error if --cluster not specified

Users must explicitly specify their cluster name and create
corresponding credentials file (.ssh/credentials_{cluster}.json)

Related to #35

Author: jeremymanning

check_remote_status.sh

@@ -7,7 +7,7 @@
 # completed models and estimates for in-progress training.
 #
 # Usage:
-#   ./check_remote_status.sh [--cluster tensor01|tensor02]
+#   ./check_remote_status.sh --cluster CLUSTER_NAME
 #
 
 set -e
@@ -30,7 +30,7 @@ print_success() {
 }
 
 # Default cluster
-CLUSTER="tensor02"
+CLUSTER=""  # Must be specified with --cluster flag
 
 # Parse arguments
 while [[ $# -gt 0 ]]; do
@@ -45,12 +45,11 @@ while [[ $# -gt 0 ]]; do
             echo "Check training status on remote GPU server"
             echo ""
             echo "Options:"
-            echo "  --cluster NAME          Select cluster: tensor01 or tensor02 (default: tensor02)"
+            echo "  --cluster NAME          Select cluster (required)"
             echo "  -h, --help             Show this help message"
             echo ""
             echo "Examples:"
-            echo "  $0                              # Check status on tensor02 (default)"
-            echo "  $0 --cluster tensor01           # Check status on tensor01"
+            echo "  $0 --cluster mycluster          # Check status on mycluster"
             exit 0
             ;;
         *)
@@ -61,6 +60,13 @@ while [[ $# -gt 0 ]]; do
     esac
 done
 
+# Validate cluster is specified
+if [ -z "$CLUSTER" ]; then
+    print_error "Cluster must be specified with --cluster flag"
+    echo "Example: $0 --cluster mycluster"
+    exit 1
+fi
+
 # Read credentials from config file
 CRED_FILE=".ssh/credentials_${CLUSTER}.json"
 if [ -f "$CRED_FILE" ]; then

remote_train.sh

@@ -83,15 +83,15 @@ echo "  -co, --content-only     Train content-only variant"
 echo "  -fo, --function-only    Train function-only variant"
 echo "  -pos, --part-of-speech  Train part-of-speech variant"
 echo "  -g, --max-gpus NUM      Maximum number of GPUs to use (default: 4)"
-echo "  --cluster NAME          Select cluster: tensor01 or tensor02 (default: tensor02)"
+echo "  --cluster NAME          Select cluster (required: specify your cluster name)"
 echo
 
 # Parse command line arguments
 KILL_MODE=false
 RESUME_MODE=false
 VARIANT_ARG=""
 MAX_GPUS=""
-CLUSTER="tensor02"  # Default cluster
+CLUSTER=""  # Must be specified with --cluster flag
 
 while [[ $# -gt 0 ]]; do
     case $1 in
@@ -136,6 +136,14 @@ while [[ $# -gt 0 ]]; do
     esac
 done
 
+# Validate cluster is specified
+if [ -z "$CLUSTER" ]; then
+    print_error "Cluster must be specified with --cluster flag"
+    echo "Example: $0 --cluster mycluster"
+    echo "Create credentials file: .ssh/credentials_mycluster.json"
+    exit 1
+fi
+
 # Get server details - try to read from cluster-specific credentials file first
 CRED_FILE=".ssh/credentials_${CLUSTER}.json"
 if [ -f "$CRED_FILE" ]; then

sync_models.sh

@@ -22,7 +22,7 @@ SYNC_BASELINE=false
 SYNC_CONTENT=false
 SYNC_FUNCTION=false
 SYNC_POS=false
-CLUSTER="tensor02"  # Default cluster
+CLUSTER=""  # Must be specified with --cluster flag
 
 # Parse command line arguments (stackable)
 while [[ $# -gt 0 ]]; do
@@ -63,17 +63,12 @@ while [[ $# -gt 0 ]]; do
             echo "  -fo, --function-only    Sync function-only variant models"
             echo "  -pos, --part-of-speech  Sync part-of-speech variant models"
             echo "  -a, --all               Sync all models (baseline + all variants)"
-            echo "  --cluster CLUSTER       Specify cluster (tensor01 or tensor02, default: tensor02)"
+            echo "  --cluster CLUSTER       Specify cluster (required)"
             echo "  -h, --help              Show this help message"
             echo ""
-            echo "Flags are stackable. Examples:"
-            echo "  $0                      # Sync baseline only (default, tensor02)"
-            echo "  $0 -b -co               # Sync baseline and content-only"
-            echo "  $0 -fo -pos             # Sync function-only and POS"
-            echo "  $0 -a                   # Sync everything"
-            echo "  $0 -a --cluster tensor01  # Sync everything from tensor01"
-            echo ""
-            echo "Default: Sync baseline models only from tensor02"
+            echo "Examples:"
+            echo "  $0 --cluster mycluster -a       # Sync everything from mycluster"
+            echo "  $0 --cluster gpucluster -b -co  # Sync baseline and content-only"
             exit 0
             ;;
         *)
@@ -89,6 +84,14 @@ if [ "$SYNC_BASELINE" = false ] && [ "$SYNC_CONTENT" = false ] && [ "$SYNC_FUNCT
     SYNC_BASELINE=true
 fi
 
+# Validate cluster is specified
+if [ -z "$CLUSTER" ]; then
+    print_error "Cluster must be specified with --cluster flag"
+    echo "Example: $0 --cluster mycluster -a"
+    echo "Create credentials file: .ssh/credentials_mycluster.json"
+    exit 1
+fi
+
 echo "=================================================="
 echo "       LLM Stylometry Model Sync"
 echo "=================================================="