Gmer4Lfe
e8b114094a
Headers claimed protections the code never had, and several destructive paths had no guard against a collapsed config value.
512 lines
22 KiB
Bash
Executable File
512 lines
22 KiB
Bash
Executable File
#!/bin/bash
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# ==============================================================================================
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# ================================= Docker Update ==============================================
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# ==============================================================================================
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#
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# PURPOSE
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# ─────────────────────────────────────────────────────────────────────────────
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# Pulls the latest images for configured containers. Three modes:
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#
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# Normal mode — called by daily_sync_maintenance.sh before docker_daily_restart.sh.
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# Containers stay running during the pull — no extra downtime beyond what the
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# nightly restart already causes.
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#
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# Weekly mode — called by weekly_sync_maintenance.sh via WEEKLY_MAINTENANCE_SCRIPTS
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# before docker_weekly_restart.sh. Pulls WEEKLY_RESTART_CONTAINERS so the
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# subsequent restart lands on the fresh image.
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#
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# Remainder mode — called by monthly_maintenance.sh. Catches everything not
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# already owned by daily or weekly — derived from docker ps, nothing to configure.
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#
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# ==============================================================================================
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# OPERATIONAL MODEL
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# ==============================================================================================
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#
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# Normal mode (daily):
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# Targets DAILY_RESTART_CONTAINERS — same list used by docker_daily_restart.sh.
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# Pull → compare old vs new image ID → mark updated or already current.
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# docker_daily_restart.sh runs after — containers restart onto the fresh image.
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#
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# Weekly mode:
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# Targets WEEKLY_RESTART_CONTAINERS — same list used by docker_weekly_restart.sh.
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# Pull → compare → rebuild if changed.
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# docker_weekly_restart.sh runs after — containers restart onto the fresh image.
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#
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# Remainder mode (monthly):
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# Targets all currently running containers NOT in:
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# DAILY_RESTART_CONTAINERS — already updated daily
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# WEEKLY_RESTART_CONTAINERS — already updated weekly
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# emby + critical-data profiles — updated inline by the weekly sync window
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# FALLBACK_*_TIER* — owned by the remote server's update cycle
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# Pull → compare → prune dangling images.
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#
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# ==============================================================================================
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# DESIGN PRINCIPLES
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# ==============================================================================================
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#
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# Single List
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# Normal mode reuses DAILY_RESTART_CONTAINERS rather than maintaining a
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# separate update list. Adding or removing a container from the restart list
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# automatically updates the image pull list — one change, both places.
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#
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# Version Ownership
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# Fallback containers are excluded from remainder mode. This server only runs
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# them during a fallback. The remote server owns their version — if remainder
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# updates them independently and a handback occurs, the remote's older image
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# may not handle data written by the newer version.
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#
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# State Respect
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# Stopped containers are never targeted. Pulling while stopped adds no value
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# and a stopped container was likely halted intentionally.
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#
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# ==============================================================================================
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# OPERATIONAL SAFEGUARDS
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# ==============================================================================================
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#
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# Lock Acquisition
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# Prevents concurrent execution via acquire_lock(). Safe to call from
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# maintenance scripts without risk of overlap.
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#
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# Host Detection
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# detect_hosts() identifies which server is running the script and aliases
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# HOST*_DAILY_RESTART_CONTAINERS to the correct host's values.
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#
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# Root Enforcement
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# Docker operations require root privileges.
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#
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# Docker Presence Check
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# Verifies the docker binary exists before execution.
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#
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# Docker Daemon Check
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# Verifies the daemon is responsive before container discovery. Remainder mode
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# derives its entire target list from docker ps — against a hung daemon that
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# returns empty and the run silently reports "no containers to update".
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#
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# Timeout Protection
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# Inspect, discovery and image-query commands are wrapped in a timeout so a
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# hung daemon cannot stall the maintenance window. docker pull is deliberately
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# NOT wrapped — a large image legitimately takes longer than any sane timeout,
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# and killing it mid-layer wastes the transfer.
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#
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# Empty List Guards
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# Each mode exits cleanly with a pointer to the relevant conf key when its
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# container list is unconfigured for this host.
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#
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# Rebuild Failure Fallback
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# A container that fails to rebuild is excluded from the rebuilt-list handoff
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# file, so the follow-up restart script still gives it a normal restart pass.
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#
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# DAILY_CONTAINER_UPDATES / WEEKLY_CONTAINER_UPDATES Toggles
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# Each mode exits cleanly when disabled. Restart scripts run regardless —
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# update and restart are independent operations.
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#
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# Fallback Exclusion
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# Remainder mode excludes containers owned by the remote server's update cycle
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# to prevent version divergence across the fallback boundary.
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#
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# Running-Only Filter
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# Stopped containers excluded from remainder mode — intentionally down.
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#
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# Image ID Comparison
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# Containers not restarted unless their image actually changed. Pulls that
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# result in "already up to date" produce no restart.
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#
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# ==============================================================================================
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# CONFIGURATION
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# ==============================================================================================
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#
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# master.conf
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#
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# DAILY_CONTAINER_UPDATES
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# Enable or disable normal mode. docker_daily_restart.sh runs regardless.
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# (default: true)
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#
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# WEEKLY_CONTAINER_UPDATES
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# Enable or disable weekly mode. docker_weekly_restart.sh runs regardless.
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# (default: true)
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#
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# MONTHLY_REMAINING_UPDATES
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# Enable or disable remainder mode. (default: true)
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#
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# DOCKER_UPDATE_REBUILT_DAILY_FILE / DOCKER_UPDATE_REBUILT_WEEKLY_FILE
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# Written after each normal/weekly run with the containers actually rebuilt
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# this pass — read by docker_daily_restart.sh / docker_weekly_restart.sh so
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# they skip restarting a container a second time right after this script
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# already rebuilt it onto the new image. Not written in remainder mode
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# (no follow-up restart script exists for it).
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#
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# PROFILE_CRITICAL_CONTAINER_NAMES[emby|critical-data]
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# Container names for emby and critical-data profiles — excluded from
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# remainder mode (already updated by the weekly sync window)
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#
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# host*.conf
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#
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# HOST*_DAILY_RESTART_CONTAINERS
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# Containers updated in normal mode. Aliased by detect_hosts() →
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# DAILY_RESTART_CONTAINERS
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#
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# HOST*_WEEKLY_RESTART_CONTAINERS
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# Containers updated in weekly mode. Aliased by detect_hosts() →
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# WEEKLY_RESTART_CONTAINERS
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#
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# ==============================================================================================
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# RUNTIME MODES
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# ==============================================================================================
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#
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# docker_update.sh
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# Normal mode — pull latest images for DAILY_RESTART_CONTAINERS
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# Called by daily_sync_maintenance.sh before docker_daily_restart.sh
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#
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# docker_update.sh --weekly
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# Weekly mode — pull latest images for WEEKLY_RESTART_CONTAINERS
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# Called by weekly_sync_maintenance.sh (WEEKLY_MAINTENANCE_SCRIPTS) before docker_weekly_restart.sh
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#
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# docker_update.sh --remainder
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# Remainder mode — pull all running containers not in managed lists,
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# restart those that received updates, prune dangling images
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# Called by monthly_maintenance.sh
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#
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# docker_update.sh --dry-run
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# Preview which containers would be pulled without making changes
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#
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# docker_update.sh --status
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# Show configuration and container list for current mode
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#
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# docker_update.sh --log
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# Verbose per-container pull and comparison output
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#
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# ==============================================================================================
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "$SCRIPT_DIR/../load_config.sh"
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# Pre-parse mode flags before parse_args (unknown args pass through to PARSED_ARGS)
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REMAINDER_MODE=false
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WEEKLY_MODE=false
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_filtered_args=()
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for _arg in "$@"; do
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case "$_arg" in
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--remainder) REMAINDER_MODE=true ;;
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--weekly) WEEKLY_MODE=true ;;
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*) _filtered_args+=("$_arg") ;;
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esac
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done
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unset _arg
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parse_args "${_filtered_args[@]}"
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unset _filtered_args
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# ==============================================================================================
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# ━━━ Setup ━━━
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# ==============================================================================================
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if [[ "$EUID" -ne 0 ]]; then
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error "Must be run as root"
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exit 1
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fi
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acquire_lock
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if ! command -v docker &>/dev/null; then
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error "Docker command not found"
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exit 1
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fi
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detect_hosts
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# Remainder mode builds its whole target list from docker ps — a hung daemon returns
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# empty and the run would report "no containers to update" instead of failing.
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if ! timeout "$DOCKER_TIMEOUT" docker info >/dev/null 2>&1; then
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error "Docker daemon not responding — skipping image updates"
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notify "Docker update skipped on $(hostname) — Docker daemon not responding" "Docker Update" "warning"
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exit 1
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fi
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# ==============================================================================================
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# ━━━ Container Discovery ━━━
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# ==============================================================================================
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if [[ "$REMAINDER_MODE" == true ]]; then
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if [[ "${MONTHLY_REMAINING_UPDATES:-true}" != "true" ]]; then
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echo "MONTHLY_REMAINING_UPDATES=false — skipping remainder container updates"
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exit 0
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fi
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declare -A _exclude=()
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# Daily containers — updated by docker_update.sh normal mode
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for _c in "${DAILY_RESTART_CONTAINERS[@]}"; do
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[[ -n "$_c" ]] && _exclude["$_c"]=1
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done
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# Weekly containers — updated by docker_update.sh --weekly
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for _c in "${WEEKLY_RESTART_CONTAINERS[@]}"; do
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[[ -n "$_c" ]] && _exclude["$_c"]=1
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done
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# Weekly sync-window containers (emby + critical-data) — updated inline by weekly_sync_maintenance.sh
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_weekly_str="${PROFILE_CRITICAL_CONTAINER_NAMES[emby]:-} ${PROFILE_CRITICAL_CONTAINER_NAMES[critical-data]:-}"
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read -r -a _weekly_arr <<< "$_weekly_str"
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for _c in "${_weekly_arr[@]}"; do
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[[ -n "$_c" ]] && _exclude["$_c"]=1
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done
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unset _weekly_str _weekly_arr
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# Fallback coverage containers — owned by the remote server's update cycle.
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# This server runs them during fallback but should never update them independently.
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# Updating them here risks version divergence: if remote's writeback after handback
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# encounters data written by a newer version, it may not handle it correctly.
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for _tier in 1 2 3 4; do
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_tier_var="FALLBACK_${REMOTE_ID}_TIER${_tier}"
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eval "_tier_arr=(\"\${${_tier_var}[@]:-}\")" 2>/dev/null
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for _c in "${_tier_arr[@]}"; do
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[[ -n "$_c" ]] && _exclude["$_c"]=1
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done
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done
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unset _tier _tier_var _tier_arr _c
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mapfile -t _all_running < <(timeout "$DOCKER_TIMEOUT" docker ps --format '{{.Names}}' | sort)
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TARGET_CONTAINERS=()
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for _c in "${_all_running[@]}"; do
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[[ -z "${_exclude[$_c]+x}" ]] && TARGET_CONTAINERS+=("$_c")
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done
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unset _all_running _exclude _c
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elif [[ "$WEEKLY_MODE" == true ]]; then
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if [[ "${WEEKLY_CONTAINER_UPDATES:-true}" != "true" ]]; then
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echo "WEEKLY_CONTAINER_UPDATES=false — skipping weekly container updates"
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exit 0
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fi
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if [[ ${#WEEKLY_RESTART_CONTAINERS[@]} -eq 0 ]]; then
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warn "WEEKLY_RESTART_CONTAINERS is empty for $MY_ID — nothing to update"
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warn "Check HOST${MY_ID#HOST}_WEEKLY_RESTART_CONTAINERS in host*.conf"
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exit 0
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fi
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TARGET_CONTAINERS=("${WEEKLY_RESTART_CONTAINERS[@]}")
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else
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if [[ "${DAILY_CONTAINER_UPDATES:-true}" != "true" ]]; then
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echo "DAILY_CONTAINER_UPDATES=false — skipping container updates"
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exit 0
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fi
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if [[ ${#DAILY_RESTART_CONTAINERS[@]} -eq 0 ]]; then
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warn "DAILY_RESTART_CONTAINERS is empty for $MY_ID — nothing to update"
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warn "Check HOST${MY_ID#HOST}_DAILY_RESTART_CONTAINERS in host*.conf"
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exit 0
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fi
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TARGET_CONTAINERS=("${DAILY_RESTART_CONTAINERS[@]}")
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fi
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# ==============================================================================================
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# ━━━ Status ━━━
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# ==============================================================================================
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if [[ "$SHOW_STATUS" == true ]]; then
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echo ""
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echo "━━━━━ $ICON_SUMMARY STATUS ━━━━━"
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echo "$ICON_HOST Identity: $MY_ID ($LOCAL_SERVER_NAME)"
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if [[ "$REMAINDER_MODE" == true ]]; then
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echo "$ICON_GEAR Mode: remainder (monthly)"
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echo "$ICON_CONTAINERS Containers: ${#TARGET_CONTAINERS[@]} running (excluding daily, weekly, sync-window, fallback)"
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for _c in "${TARGET_CONTAINERS[@]}"; do echo " $_c"; done
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elif [[ "$WEEKLY_MODE" == true ]]; then
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echo "$ICON_GEAR Mode: weekly"
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echo "$ICON_CONTAINERS Containers: ${TARGET_CONTAINERS[*]}"
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echo "$ICON_GEAR Enabled: ${WEEKLY_CONTAINER_UPDATES:-true}"
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else
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echo "$ICON_GEAR Mode: normal (daily)"
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echo "$ICON_CONTAINERS Containers: ${TARGET_CONTAINERS[*]}"
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echo "$ICON_GEAR Enabled: ${DAILY_CONTAINER_UPDATES:-true}"
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fi
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echo "$ICON_GEAR Dry Run: $DRY_RUN"
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echo "━━━━━━━━━━━━━━━━━━━━━━━"
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exit 0
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fi
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[[ "$DRY_RUN" == true ]] && warn "DRY RUN — no images will be pulled"
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if [[ ${#TARGET_CONTAINERS[@]} -eq 0 ]]; then
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echo "No containers to update"
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exit 0
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fi
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# ==============================================================================================
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# ━━━ Pull Updates ━━━
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# ==============================================================================================
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echo ""
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if [[ "$REMAINDER_MODE" == true ]]; then
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echo "━━━ $ICON_CONTAINERS Docker Update (remainder) — $(date '+%Y-%m-%d %H:%M:%S') ━━━"
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echo "$ICON_CONTAINERS Updating ${#TARGET_CONTAINERS[@]} container(s) (not in daily, weekly, or sync window)"
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log "$ICON_CONTAINERS Remainder targets: ${TARGET_CONTAINERS[*]}"
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elif [[ "$WEEKLY_MODE" == true ]]; then
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echo "━━━ $ICON_CONTAINERS Docker Update (weekly) — $(date '+%Y-%m-%d %H:%M:%S') ━━━"
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log "$ICON_CONTAINERS Containers: ${TARGET_CONTAINERS[*]}"
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else
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echo "━━━ $ICON_CONTAINERS Docker Update — $(date '+%Y-%m-%d %H:%M:%S') ━━━"
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log "$ICON_CONTAINERS Containers: ${TARGET_CONTAINERS[*]}"
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fi
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echo ""
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START=$(date +%s)
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UPDATED=()
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UP_TO_DATE=()
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FAILED=()
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OLD_IMAGE_IDS=() # old image IDs to explicitly remove after rebuilds
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SKIPPED=()
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for container in "${TARGET_CONTAINERS[@]}"; do
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[[ -z "$container" ]] && continue
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log "━━━ $ICON_CONTAINERS $container ━━━"
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if ! timeout "$DOCKER_TIMEOUT" docker inspect "$container" &>/dev/null; then
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warn "$container — not found, skipping"
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SKIPPED+=("$container")
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continue
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fi
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IMAGE=$(timeout "$DOCKER_TIMEOUT" docker inspect --format='{{.Config.Image}}' "$container" 2>/dev/null)
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if [[ -z "$IMAGE" ]]; then
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warn "$container — could not determine image, skipping"
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SKIPPED+=("$container")
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continue
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fi
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log "$container — image: $IMAGE"
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — would pull: $IMAGE"
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UPDATED+=("$container")
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continue
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fi
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# Capture the image ID the container is currently running on, and the
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# image ID :latest points to before the pull. After pulling, we rebuild if
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# either a new digest landed OR the container is behind what :latest is now.
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CONTAINER_IMAGE_ID=$(timeout "$DOCKER_TIMEOUT" docker inspect "$container" --format='{{.Image}}' 2>/dev/null || echo "")
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OLD_ID=$(timeout "$DOCKER_TIMEOUT" docker image inspect "$IMAGE" --format='{{.Id}}' 2>/dev/null || echo "")
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log "$ICON_SYNC Pulling $IMAGE..."
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if [[ "$ENABLE_LOGGING" == "true" ]]; then
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docker pull "$IMAGE" 2>&1 | grep -E "^(Status:|Digest:|Error|error)" | sed 's/^/ /'
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_pull_rc=${PIPESTATUS[0]}
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else
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docker pull "$IMAGE" >/dev/null 2>&1
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_pull_rc=$?
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fi
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NEW_ID=$(timeout "$DOCKER_TIMEOUT" docker image inspect "$IMAGE" --format='{{.Id}}' 2>/dev/null || echo "")
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if [[ $_pull_rc -eq 0 ]]; then
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_pull_new=$( [[ -n "$OLD_ID" && "$OLD_ID" != "$NEW_ID" ]] && echo true || echo false)
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_container_behind=$([[ -n "$CONTAINER_IMAGE_ID" && -n "$NEW_ID" && "$CONTAINER_IMAGE_ID" != "$NEW_ID" ]] && echo true || echo false)
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if [[ "$_pull_new" == true || "$_container_behind" == true ]]; then
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[[ "$_pull_new" == true ]] && log "$ICON_DONE $container — new image (${OLD_ID:7:12} → ${NEW_ID:7:12})"
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[[ "$_container_behind" == true && "$_pull_new" == false ]] && log "$ICON_DONE $container — image already pulled, container behind (${CONTAINER_IMAGE_ID:7:12} → ${NEW_ID:7:12})"
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UPDATED+=("$container")
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OLD_IMAGE_IDS+=("$CONTAINER_IMAGE_ID")
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else
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log "$container — up to date (${NEW_ID:7:12})"
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UP_TO_DATE+=("$container")
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fi
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else
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warn "$container — pull failed ($IMAGE)"
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FAILED+=("$container")
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fi
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done
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# ── Recreate containers that received a new image ────────────────────────────
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# docker restart uses the image ID baked in at creation time — it never picks
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# up the new digest. rebuild_container reads the stored XML template, stops the
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# old container, recreates it (new image, same config), then prunes the old image.
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REBUILT=()
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REBUILD_FAILED=()
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if [[ ${#UPDATED[@]} -gt 0 ]]; then
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for container in "${UPDATED[@]}"; do
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[[ -z "$container" ]] && continue
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if [[ "$DRY_RUN" == true ]]; then
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warn "DRY RUN — would rebuild $container from template"
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REBUILT+=("$container")
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continue
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fi
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log "$ICON_SYNC Rebuilding $container from template on new image..."
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if platform_rebuild_container "$container"; then
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echo "$ICON_DONE $container rebuilt ✅"
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REBUILT+=("$container")
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else
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_fallback_msg=$([[ "$WEEKLY_MODE" == true ]] && echo "docker_weekly_restart.sh" || ([[ "$REMAINDER_MODE" == true ]] && echo "no follow-up restart" || echo "docker_daily_restart.sh"))
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error "Failed to rebuild $container — $_fallback_msg"
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unset _fallback_msg
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notify "$container failed to rebuild after image update on $(hostname)" "Docker Update" "warning"
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REBUILD_FAILED+=("$container")
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fi
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|
done
|
|
fi
|
|
|
|
# Record successfully-rebuilt containers so the follow-up restart script (daily/weekly only —
|
|
# remainder has no follow-up) can skip them instead of restarting an already-fresh container a
|
|
# second time. Deliberately excludes REBUILD_FAILED — those still need the restart script's
|
|
# normal pass as a fallback, exactly as the error message above promises. Written even when
|
|
# REBUILT is empty, so a stale file from a previous run doesn't linger and get misread later.
|
|
if [[ "$DRY_RUN" == false && "$REMAINDER_MODE" != true ]]; then
|
|
_rebuilt_file="$DOCKER_UPDATE_REBUILT_DAILY_FILE"
|
|
[[ "$WEEKLY_MODE" == true ]] && _rebuilt_file="$DOCKER_UPDATE_REBUILT_WEEKLY_FILE"
|
|
if [[ -n "$_rebuilt_file" ]]; then
|
|
printf '%s\n' "${REBUILT[@]}" > "$_rebuilt_file" 2>/dev/null
|
|
fi
|
|
unset _rebuilt_file
|
|
fi
|
|
|
|
# ── Remove old images ────────────────────────────────────────────────────────
|
|
# Explicitly rmi by the IDs captured before each pull. Tagged images are never
|
|
# caught by dangling-only prune, so this is the only reliable cleanup path.
|
|
# Fall through to dangling prune to catch any leftovers from other update paths.
|
|
if [[ "$DRY_RUN" == true ]]; then
|
|
warn "DRY RUN — would remove ${#OLD_IMAGE_IDS[@]} old image(s) and prune dangling"
|
|
PRUNED_SUMMARY="(dry run)"
|
|
else
|
|
for _old_id in "${OLD_IMAGE_IDS[@]}"; do
|
|
timeout "$DOCKER_TIMEOUT" docker rmi "$_old_id" >/dev/null 2>&1 || true
|
|
done
|
|
PRUNED_OUTPUT=$(timeout "$DOCKER_TIMEOUT" docker image prune -f 2>&1)
|
|
[[ "$ENABLE_LOGGING" == "true" ]] && echo "$PRUNED_OUTPUT" | sed 's/^/ /'
|
|
PRUNED_SUMMARY=$(echo "$PRUNED_OUTPUT" | grep -E "^Total reclaimed" || echo "nothing reclaimed")
|
|
fi
|
|
|
|
END=$(date +%s)
|
|
|
|
# ==============================================================================================
|
|
# ━━━ Summary ━━━
|
|
# ==============================================================================================
|
|
if [[ "$REMAINDER_MODE" == true ]]; then
|
|
echo "━━━━━ $ICON_SUMMARY DOCKER UPDATE (REMAINDER) SUMMARY ━━━━━"
|
|
elif [[ "$WEEKLY_MODE" == true ]]; then
|
|
echo "━━━━━ $ICON_SUMMARY DOCKER UPDATE (WEEKLY) SUMMARY ━━━━━"
|
|
else
|
|
echo "━━━━━ $ICON_SUMMARY DOCKER UPDATE SUMMARY ━━━━━"
|
|
fi
|
|
echo "$ICON_HOST Identity: $MY_ID ($LOCAL_SERVER_NAME)"
|
|
echo "$ICON_TIME Duration: $(format_duration $(( END - START )))"
|
|
if [[ ${#UPDATED[@]} -gt 0 ]]; then
|
|
echo "$ICON_DONE Updated: ${#UPDATED[@]}"
|
|
log " ${UPDATED[*]}"
|
|
fi
|
|
[[ ${#REBUILT[@]} -gt 0 ]] && echo "$ICON_SYNC Rebuilt: ${#REBUILT[@]}"
|
|
[[ ${#REBUILD_FAILED[@]} -gt 0 ]] && echo "$ICON_ERROR Rebuild fail:${REBUILD_FAILED[*]}"
|
|
[[ ${#UP_TO_DATE[@]} -gt 0 ]] && log "$ICON_RUNNING Up to date: ${UP_TO_DATE[*]}"
|
|
[[ ${#SKIPPED[@]} -gt 0 ]] && log "$ICON_WARN Skipped: ${SKIPPED[*]}"
|
|
[[ ${#FAILED[@]} -gt 0 ]] && echo "$ICON_ERROR Failed: ${FAILED[*]}"
|
|
echo "$ICON_SYNC Pruned: ${PRUNED_SUMMARY:-none}"
|
|
|
|
if [[ "$DRY_RUN" == true ]]; then
|
|
warn "DRY RUN — no images pulled"
|
|
elif [[ ${#FAILED[@]} -eq 0 ]]; then
|
|
echo "$ICON_DONE Status: done ✅ — ${#UPDATED[@]} updated, ${#UP_TO_DATE[@]} current"
|
|
else
|
|
warn "Status: ${#FAILED[@]} pull(s) failed — restart will proceed with existing images"
|
|
fi
|
|
echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
|
|
|
|
# Pull failures are non-fatal — restart proceeds regardless
|
|
exit 0
|