logging: trim active pod logs on constrained nodes

services/logging/scripts/node_log_rotation.sh

@@ -110,6 +110,9 @@ trim_constrained_pod_logs() {
       continue
     fi
     find "${base}/pods" -type f \( -name '[1-9]*.log' -o -name '*.log.20*' \) -size +1M -print -exec truncate -s 0 {} \; 2>/dev/null || true
+    # Some nodes keep active container logs on tiny zram-backed /var/log.
+    # Trim noisy live logs before kubelet loses the ability to create pods.
+    find "${base}/pods" -type f -name '0.log' -size +1M -print -exec truncate -s 1M {} \; 2>/dev/null || true
     if [ -d "${base}/containers" ]; then
       find "${base}/containers" -xtype l -print -delete 2>/dev/null || true
     fi