fix(runners): fix registration token API, shuffle rebalance, consolidate dirs (#1333)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: sbryngelson

misc/runners/common/rebalance-runners.sh

@@ -106,6 +106,16 @@ done
 # Add offline runners to be placed
 for i in "${offline[@]}"; do to_place+=("offline $i"); done
 
+# Shuffle to_place so sequential runner numbers spread across nodes
+# (avoids overloading one node when jobs arrive in number order)
+shuffled=()
+while [ ${#to_place[@]} -gt 0 ]; do
+    rand=$(( RANDOM % ${#to_place[@]} ))
+    shuffled+=("${to_place[$rand]}")
+    to_place=("${to_place[@]:0:$rand}" "${to_place[@]:$((rand+1))}")
+done
+to_place=("${shuffled[@]}")
+
 # Assign to underloaded nodes
 moves=()
 for entry in "${to_place[@]}"; do

misc/runners/common/runner-lib.sh

@@ -21,7 +21,7 @@ gh_list_runners() {
 
 # Get a registration token for new runners.
 gh_registration_token() {
-    gh api "orgs/$ORG/actions/runners/registration-token" --jq .token
+    gh api "orgs/$ORG/actions/runners/registration-token" -X POST --jq .token
 }
 
 # Get the latest runner binary version.

misc/runners/phoenix/config.sh

@@ -15,7 +15,6 @@ SSH_OPTS="-o ConnectTimeout=5"
 
 # Parent directories containing actions-runner-*/ installations on shared storage.
 RUNNER_PARENT_DIRS=(
-    /storage/scratch1/6/sbryngelson3/mfc-runners
     /storage/project/r-sbryngelson3-0/sbryngelson3/mfc-runners-2
 )