mirror of
https://github.com/boxpositron/absolute-dotfiles.git
synced 2026-10-24 08:23:19 +00:00
David Ibia
124 lines
3.9 KiB
Bash
Executable File
124 lines
3.9 KiB
Bash
Executable File
#!/usr/bin/env bash
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# docker-nuke — capture diagnostics from a wedged Docker Desktop, then
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# force-kill and restart it.
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#
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# Written for bash 3.2 compatibility (macOS /bin/bash).
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set -euo pipefail
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# --- configuration ----------------------------------------------------------
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#
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# The SC2034 directives below are per-line on purpose, not file-level: each
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# constant is consumed by a later task, and its directive is deleted at that
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# point. A file-level disable would silence SC2034 for the whole file forever,
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# hiding a genuinely dead variable added later. By the final task none of these
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# directives should remain.
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# shellcheck disable=SC2034
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HEALTH_TIMEOUT=6 # seconds to wait on `docker info` before calling it wedged
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# shellcheck disable=SC2034
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GRACEFUL_WAIT=8 # seconds to let Docker quit politely
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# shellcheck disable=SC2034
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TERM_WAIT=5 # seconds to wait after SIGTERM before SIGKILL
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# shellcheck disable=SC2034
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RESTART_TIMEOUT=90 # seconds to wait for the daemon to come back
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# shellcheck disable=SC2034
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POLL_INTERVAL=2 # seconds between daemon health polls
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# shellcheck disable=SC2034
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SAMPLE_DURATION=2 # seconds of stack sampling per process
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# shellcheck disable=SC2034
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SAMPLE_TIMEOUT=10 # hard cap on a single `sample` invocation
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# shellcheck disable=SC2034
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DUMP_RETENTION=10 # how many dump directories to keep
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# shellcheck disable=SC2034
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LOG_TAIL_LINES=2000 # lines of Docker log to copy (keeps dumps small)
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# shellcheck disable=SC2034
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DOCKER_APP="/Applications/Docker.app"
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# shellcheck disable=SC2034
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DOCKER_LOG_DIR="$HOME/Library/Containers/com.docker.docker/Data/log"
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# shellcheck disable=SC2034
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DOCKER_RAW="$HOME/Library/Containers/com.docker.docker/Data/vms/0/data/Docker.raw"
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# shellcheck disable=SC2034
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CRASH_DIR="$HOME/Library/Logs/DiagnosticReports"
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# Overridable so tests never touch real state.
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# shellcheck disable=SC2034
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DUMP_ROOT="${DOCKER_NUKE_DUMP_ROOT:-$HOME/.local/state/docker-nuke}"
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OPT_FORCE=0
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OPT_NO_RESTART=0
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OPT_DRY_RUN=0
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OPT_DEEP=0
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# --- helpers ----------------------------------------------------------------
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bin_exists() { command -v "$1" >/dev/null 2>&1; }
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log() { printf '%s\n' "$*"; }
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warn() { printf '%s\n' "$*" >&2; }
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usage() {
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cat <<'EOF'
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docker-nuke: force-restart a wedged Docker Desktop, capturing diagnostics first
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Usage:
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docker-nuke [options]
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Options:
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-f, --force Skip the confirmation shown when Docker looks healthy
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-n, --no-restart Kill Docker but do not relaunch it
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--dry-run Report what would be killed and dumped; change nothing
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--deep Also stop root launchd helpers (com.docker.vmnetd); needs sudo
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-h, --help Show this help
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Diagnostics are written to ~/.local/state/docker-nuke/<timestamp>/ before
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anything is killed. The most recent 10 dumps are kept.
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Exit codes:
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0 Docker killed and confirmed responsive again
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1 Daemon did not come back within the restart timeout
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2 Usage error, or aborted at the healthy-daemon prompt
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EOF
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}
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parse_args() {
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OPT_FORCE=0
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OPT_NO_RESTART=0
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OPT_DRY_RUN=0
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OPT_DEEP=0
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while [ "$#" -gt 0 ]; do
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# shellcheck disable=SC2034 # OPT_* are read by main once it is wired up
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case "$1" in
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-f|--force) OPT_FORCE=1 ;;
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-n|--no-restart) OPT_NO_RESTART=1 ;;
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--dry-run) OPT_DRY_RUN=1 ;;
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--deep) OPT_DEEP=1 ;;
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-h|--help) usage; return 3 ;;
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*)
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warn "docker-nuke: unknown option '$1'"
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usage >&2
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return 2
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;;
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esac
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shift
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done
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return 0
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}
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# --- entrypoint -------------------------------------------------------------
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main() {
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local rc=0
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parse_args "$@" || rc=$?
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if [ "$rc" -eq 3 ]; then return 0; fi
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if [ "$rc" -ne 0 ]; then return "$rc"; fi
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log "docker-nuke: not yet implemented"
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return 0
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}
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# Only run when executed, not when sourced by the test harness.
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if [ "${BASH_SOURCE[0]}" = "${0}" ]; then
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main "$@"
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fi
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