docker-shims-exhaust-root-inotify-instances

Root user hits fs.inotify.max_user_instances=128 (system default) because each Docker container shim consumes one instance — 100+ containers on a busy VPS saturates the budget entirely. Node.js file watchers then fail with EMFILE. Fix: raise to 512 via sysctl.d persistent config (fs.inotify.max_user_instances=512).

Related

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