linux – deploy-and.run

rsync -a Stole the setgid Bit, and systemd Blocked the Rollback

November 15, 2026November 11, 2026 by halimat

Terminal sketch: a release directory loses its setgid bit and shared group after rsync -a, node fails with EACCES on node_modules, and systemctl refuses the restart with 'start request repeated too quickly'.

The first automated deploy of a small Node.js app went red, and the rollback failed too. Two independent mechanisms, each harmless alone: rsync copying permissions it had no business copying, and a systemd start limit that outlived the crash loop it was meant to contain.