Claude
9e06ed4b83
With 70+ services sharing a handful of common default ports (emby and jellyfin both default to 8096, changedetection and frigate both default to 5000, arm and nextcloud both default to 8080...), nothing previously checked whether a service's default port was actually free on the host. Whichever service installed second would silently write a compose file claiming an already-held port, only failing at `docker compose up` time. Adds two shared helpers to lib/common.sh: - port_in_use PORT [PROTO] — true if something's already listening - find_free_port VARNAME START [PROTO] — scans upward, writes back the first free port Every service that publishes a fixed host port now scans before writing docker-compose.yml, on every install (not just when adding an explicit additional instance). On a normal single-install host this is a silent no-op; it only changes behavior when something else already holds the port. - The 19 services already given multi-instance support this session had their port scan moved out of the "add instance" branch to run unconditionally, since the same collision risk exists on a plain first install. - 20 more services with previously-hardcoded ports gained scanning for the first time: archivebox, arm, calibre-web, changedetection, drum-rhythm-game, gatus, n8n, nextcloud, onlyoffice, stirling-pdf, uptimekuma, portainer, iopaint (both GPU/CPU compose branches), koha (paired), syncthing (paired), wg-easy (paired, plus WG_PORT env so generated peer configs keep the right Endpoint), homeassistant (bridge-mode only — host mode can only warn), frigate and frigate-audio (multi-port stacks, moved together). - caddy.sh is the deliberate exception: 80/443 stay fixed and only warn on collision, since silently moving Caddy itself would leave nothing listening where any client actually looks. - authelia.sh needs no change — it has no published host port at all. - Every service's standalone bootstrap fallback (sudo bash services/x.sh with no sibling files) got the same two helpers duplicated into its stub block, matching how every other shared helper is already handled there. Documents the full pattern in CLAUDE.md's new "Port collision avoidance" section, including the quoted-heredoc/backtick-escaping gotcha and the network_mode:host limitation (can only scan ports the app takes as a configurable env var). Verified via bash -n on every changed file, plus functional runs seeding occupied ports for each collision shape used here (single, paired, multi-port stacks) and confirming the scan/shift and generated compose/README output are correct — including the emby/jellyfin, nextcloud/arm, and frigate/changedetection collision scenarios that originally motivated this.
396 lines
16 KiB
Bash
396 lines
16 KiB
Bash
#!/bin/bash
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# services/meshcentral.sh — Self-hosted remote device management server (MeshCentral).
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# Part of the modular post-install system (sourced by setup.sh).
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#
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# Can also be run standalone on any machine:
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# sudo bash meshcentral.sh
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# (Docker must already be installed when run standalone)
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#
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# Ported from ubuntu-post-install-24.04-crowdsec.sh (# ---- MESHCENTRAL SERVER ----).
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# Own ~/docker/meshcentral/ with a standalone docker-compose.yml + .env.
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# HTTPS on port 4430, agent listener on 4433. First visit: create admin account.
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# ── Standalone bootstrap ──────────────────────────────────────────────────────
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# Detected when the script is executed directly rather than sourced by setup.sh.
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# Sets up helpers and globals, then defers execution until after the function
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# definition at the bottom of this file.
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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[[ "$(id -u)" == "0" ]] || { echo "Run with sudo: sudo bash $0"; exit 1; }
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_SELF_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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_COMMON="$_SELF_DIR/../lib/common.sh"
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if [[ -f "$_COMMON" ]]; then
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# Full repo present — use the real helpers (picks up ~/docker/.config too)
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# shellcheck source=../lib/common.sh
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source "$_COMMON"
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else
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# One-off copy — inline minimal stubs so the script works without the repo
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log_info() { echo -e "\033[0;34m[INFO]\033[0m $*"; }
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log_success() { echo -e "\033[0;32m[OK]\033[0m $*"; }
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log_warning() { echo -e "\033[1;33m[WARN]\033[0m $*"; }
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log_error() { echo -e "\033[0;31m[ERROR]\033[0m $*" >&2; }
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require_docker() {
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command -v docker &>/dev/null || {
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log_error "Docker not found. Install it first:"
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log_error " curl -fsSL https://get.docker.com | sudo sh"
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return 1
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}
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docker compose version &>/dev/null || {
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log_error "Docker Compose plugin missing:"
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log_error " sudo apt-get install -y docker-compose-plugin"
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return 1
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}
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}
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ensure_docker_dir_ownership() {
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chown -R "$ACTUAL_USER:$ACTUAL_USER" "$@" 2>/dev/null || true
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}
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port_in_use() {
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local _port="$1" _proto="${2:-tcp}"
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local _flag="-tlnH"
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[ "$_proto" = "udp" ] && _flag="-ulnH"
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ss "$_flag" "sport = :${_port}" 2>/dev/null | grep -q .
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}
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find_free_port() {
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local _varname="$1" _port="$2" _proto="${3:-tcp}"
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while port_in_use "$_port" "$_proto"; do
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_port=$((_port + 1))
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done
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eval "$_varname='$_port'"
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}
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# Match common.sh's eval-based pattern so local vars in install_* are set correctly
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prompt_text() {
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local _q="$1" _def="$2" _var="$3" _r
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[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
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read -r -p " $_q " _r
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eval "$_var='${_r:-$_def}'"
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}
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prompt_yn() {
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local _q="$1" _def="$2" _var="$3" _r
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[[ "${UNATTENDED:-false}" == "true" ]] && { eval "$_var='$_def'"; return; }
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read -r -p " $_q " _r
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eval "$_var='${_r:-$_def}'"
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}
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configure_caddy_for_service() {
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local _name="$1" _upstream="$2" _subdomain="$3" _extra="${4:-}"
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local _caddy_dir="$DOCKER_DIR/caddy"
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local _caddyfile="$_caddy_dir/Caddyfile"
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local _display_port="${_upstream##*:}"
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# Determine mode: local Caddy, remote Caddy, or none
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local _mode="none"
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[[ -d "$_caddy_dir" ]] && _mode="local"
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[[ -n "${CADDY_REMOTE_HOST:-}" ]] && [[ "$_mode" != "local" ]] && _mode="remote"
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[[ "$_mode" == "none" ]] && {
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log_info "Access $_name directly on port $_display_port."
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return 0
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}
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echo ""
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local _do_caddy=""
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if [[ "$_mode" == "remote" ]]; then
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log_info "Remote Caddy configured (${CADDY_REMOTE_HOST})."
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log_info "A snippet file will be saved to ~/docker/caddy-snippets/."
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fi
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read -r -p " Configure Caddy reverse proxy for $_name? [y/N]: " _do_caddy
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[[ "${_do_caddy,,}" == "y" ]] || {
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log_info "Skipping — access at: http://localhost:$_display_port"
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return 0
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}
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# Domain prompt — pre-fill from SITE_DOMAIN when available
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local _default_domain=""
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if [[ -n "${SITE_DOMAIN:-}" ]] && [[ "$SITE_DOMAIN" != "example.com" ]]; then
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_default_domain="${_subdomain}.${SITE_DOMAIN}"
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log_info "Default: $_default_domain"
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fi
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local _domain=""
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read -r -p " Domain [${_default_domain:-required}]: " _domain
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_domain="${_domain:-$_default_domain}"
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[[ -n "$_domain" ]] || { log_warning "No domain entered — skipping Caddy."; return 0; }
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# Build upstream — remote Caddy uses host IP:port, not container name
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local _block_upstream="$_upstream"
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if [[ "$_mode" == "remote" ]]; then
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_block_upstream="${CADDY_REMOTE_HOST}:${_display_port}"
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fi
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local _site_block
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_site_block="$(cat << CBLOCK
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# $_name
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${_domain} {
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reverse_proxy ${_block_upstream}
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header {
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Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
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X-Content-Type-Options "nosniff"
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X-Frame-Options "SAMEORIGIN"
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Referrer-Policy "strict-origin-when-cross-origin"
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}
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log {
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output file /var/log/caddy/${_domain}.log
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format json
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}
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${_extra}
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}
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CBLOCK
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)"
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if [[ "$_mode" == "local" ]]; then
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if [[ -f "$_caddyfile" ]]; then
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local _bk="$_caddy_dir/Caddyfile.backup.$(date +%Y%m%d-%H%M%S)"
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cp "$_caddyfile" "$_bk"
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log_info "Backed up Caddyfile to $(basename "$_bk")"
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else
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touch "$_caddyfile"
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fi
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if grep -q "^${_domain}" "$_caddyfile" 2>/dev/null; then
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log_warning "$_domain already in Caddyfile"
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local _ow=""
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read -r -p " Overwrite? [y/N]: " _ow
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[[ "${_ow,,}" == "y" ]] || { log_info "Keeping existing entry."; return 0; }
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sed -i "/^${_domain}/,/^}/d" "$_caddyfile"
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fi
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printf '%s\n' "$_site_block" >> "$_caddyfile"
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log_success "Added $_domain to Caddyfile"
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docker exec caddy caddy fmt --overwrite /etc/caddy/Caddyfile 2>/dev/null || true
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if docker exec caddy caddy reload --config /etc/caddy/Caddyfile 2>/dev/null; then
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log_success "$_name accessible at: https://$_domain"
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else
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log_warning "Reload failed — check: docker logs caddy"
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log_info "Manual reload: docker exec caddy caddy reload --config /etc/caddy/Caddyfile"
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fi
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else
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local _snippet_dir="$DOCKER_DIR/caddy-snippets"
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local _snippet_file="$_snippet_dir/${_subdomain}.caddy"
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mkdir -p "$_snippet_dir"
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printf '%s\n' "$_site_block" > "$_snippet_file"
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chown "$ACTUAL_USER:$ACTUAL_USER" "$_snippet_file" 2>/dev/null || true
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log_success "Snippet saved: $_snippet_file"
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log_info "Copy to Caddy machine:"
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log_info " scp $_snippet_file caddy-host:~/caddy-snippets/"
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log_info " rsync -av $_snippet_dir/ caddy-host:~/caddy-snippets/ (all at once)"
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fi
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}
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write_readme() {
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local _dir="$1"; shift
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mkdir -p "$_dir"
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cat > "$_dir/README.md"
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}
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fi
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# Globals — ACTUAL_USER/ACTUAL_HOME must come before DOCKER_DIR
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# ($HOME under sudo is /root, not the real user's home)
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ACTUAL_USER="${ACTUAL_USER:-${SUDO_USER:-$USER}}"
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ACTUAL_HOME="$(getent passwd "$ACTUAL_USER" 2>/dev/null | cut -d: -f6 || echo "${HOME:-/root}")"
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DOCKER_DIR="${DOCKER_DIR:-$ACTUAL_HOME/docker}"
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DRY_RUN="${DRY_RUN:-false}"
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UNATTENDED="${UNATTENDED:-false}"
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SITE_TZ="${SITE_TZ:-$(cat /etc/timezone 2>/dev/null || echo UTC)}"
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SITE_DOMAIN="${SITE_DOMAIN:-example.com}"
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SITE_CADDY_NET="${SITE_CADDY_NET:-caddy_net}"
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register_service() { :; } # no-op — no wizard to register into
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_RUN_STANDALONE=1
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fi
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# ─────────────────────────────────────────────────────────────────────────────
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register_service meshcentral utilities "Self-hosted remote device management server (MeshCentral)" 4430
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install_meshcentral() {
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require_docker || return 1
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# ── Instance selection ───────────────────────────────────────────────────
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# First instance keeps the plain "meshcentral" name/paths/ports exactly as
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# before (zero behavior change for anyone with a single instance). Only
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# asking to add a second one introduces suffixed naming — same pattern as
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# services/mattermost.sh and services/wordpress.sh. Two ports (web + agent)
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# move together so they stay easy to reason about instance-to-instance.
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local MC_DIR="$DOCKER_DIR/meshcentral"
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local INSTANCE_SUFFIX="" CONTAINER="meshcentral"
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local WEB_PORT="4430" AGENT_PORT="4433"
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if [ "$DRY_RUN" = true ]; then
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echo "[DRY-RUN] MeshCentral would:"
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echo " - Offer to add a new, separate instance if one already exists"
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echo " - Create \$DOCKER_DIR/meshcentral(-<name>) with docker-compose.yml + .env (data/ files/ backups/)"
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echo " - Prompt for hostname (domain or IP for agent connections)"
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echo " - Expose port 4430 (HTTPS web) and 4433 (agent), auto-scanned for additional instances"
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echo " - Offer a Caddy reverse proxy and to start the container"
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return 0
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fi
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if [ -d "$MC_DIR" ]; then
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echo ""
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echo " MeshCentral is already installed at $MC_DIR."
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echo " 1) Manage that install (update / full reinstall / cancel)"
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echo " 2) Add a NEW, separate MeshCentral instance alongside it (its own"
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echo " server, devices, and ports — full isolation)"
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echo ""
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local _TOP_CHOICE=""
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prompt_text " Choice [1/2]:" "1" _TOP_CHOICE
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if [ "$_TOP_CHOICE" = "2" ]; then
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local _suffix=""
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while true; do
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prompt_text " Short name for the new instance (letters/numbers/hyphens, e.g. 'clients'):" "" _suffix
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_suffix="$(echo "$_suffix" | tr -cs 'a-zA-Z0-9-' '-' | sed 's/^-*//;s/-*$//')"
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if [ -z "$_suffix" ]; then
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log_warning "Name can't be empty."; continue
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fi
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if [ -d "$DOCKER_DIR/meshcentral-$_suffix" ]; then
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log_warning "meshcentral-$_suffix already exists — pick another name."; continue
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fi
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break
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done
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INSTANCE_SUFFIX="$_suffix"
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MC_DIR="$DOCKER_DIR/meshcentral-$_suffix"
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CONTAINER="meshcentral-$_suffix"
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log_info "New instance: $MC_DIR"
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fi
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fi
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# Scan for free ports unconditionally, moving both together — not just
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# when adding an explicit additional instance. A plain first install can
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# just as easily collide with an unrelated service that already claimed
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# one of these default ports — see CLAUDE.md's "Port collision
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# avoidance" section.
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while port_in_use "$WEB_PORT" || port_in_use "$AGENT_PORT"; do
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WEB_PORT=$((WEB_PORT + 1))
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AGENT_PORT=$((AGENT_PORT + 1))
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done
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local MC_HOSTNAME=""
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prompt_text "MeshCentral hostname (domain or IP) [localhost]:" "localhost" MC_HOSTNAME
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MC_HOSTNAME="${MC_HOSTNAME:-localhost}"
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mkdir -p "$MC_DIR"
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ensure_docker_dir_ownership "$MC_DIR"
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cd "$MC_DIR" || return 1
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# Mirrors configure_caddy_for_service's own mode resolution (lib/common.sh):
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# explicit CADDY_MODE from the site config wins, then a local ~/docker/caddy,
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# then the legacy CADDY_REMOTE_HOST var. Only "local" joins caddy_net — a
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# remote Caddy box can't resolve container names on this host's bridge
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# network anyway; it reaches this service via the host's published port.
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local _CADDY_MODE="${CADDY_MODE:-none}"
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[ "$_CADDY_MODE" = "none" ] && [ -d "$DOCKER_DIR/caddy" ] && _CADDY_MODE="local"
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[ "$_CADDY_MODE" = "none" ] && [ -n "${CADDY_REMOTE_HOST:-}" ] && _CADDY_MODE="remote"
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local _CADDY_NET_BLOCK=""
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local _CADDY_NET_SECTION=""
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if [ "$_CADDY_MODE" = "local" ]; then
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_CADDY_NET_BLOCK=" networks:
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- caddy_net
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"
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_CADDY_NET_SECTION="
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networks:
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caddy_net:
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external: true
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name: ${SITE_CADDY_NET:-caddy_net}
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"
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fi
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cat > docker-compose.yml << MC_COMPOSE
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name: $CONTAINER
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services:
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meshcentral:
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image: ghcr.io/ylianst/meshcentral:latest
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container_name: $CONTAINER
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hostname: $CONTAINER
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restart: unless-stopped
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environment:
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- NODE_ENV=production
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- HOSTNAME=\${MC_HOSTNAME:-localhost}
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- REVERSE_PROXY=\${MC_REVERSE_PROXY:-false}
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- REVERSE_PROXY_TLS_PORT=\${MC_TLS_PORT:-443}
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- IFRAME=false
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- ALLOW_NEW_ACCOUNTS=true
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- WEBRTC=true
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volumes:
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- ./data:/opt/meshcentral/meshcentral-data
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- ./files:/opt/meshcentral/meshcentral-files
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- ./backups:/opt/meshcentral/meshcentral-backups
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ports:
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- "${WEB_PORT}:443"
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- "${AGENT_PORT}:4433"
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${_CADDY_NET_BLOCK}${_CADDY_NET_SECTION}
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MC_COMPOSE
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cat > .env << MC_ENV
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MC_HOSTNAME=$MC_HOSTNAME
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MC_REVERSE_PROXY=false
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MC_TLS_PORT=443
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CADDY_NET=$SITE_CADDY_NET
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MC_ENV
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mkdir -p data files backups
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chown -R "$ACTUAL_USER:$ACTUAL_USER" "$MC_DIR"
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log_success "MeshCentral${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} configured at $MC_DIR (web port $WEB_PORT, agent port $AGENT_PORT)"
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configure_caddy_for_service "MeshCentral${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)}" "${CONTAINER}:443" "mesh${INSTANCE_SUFFIX:+-$INSTANCE_SUFFIX}"
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write_readme "$MC_DIR" << MD
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# MeshCentral${INSTANCE_SUFFIX:+ — $INSTANCE_SUFFIX}
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Self-hosted remote device management — remotely access, manage, and monitor
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all your computers from a single web interface. Install agents on each device.
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$( [ -n "$INSTANCE_SUFFIX" ] && echo "
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This is a separate, fully isolated instance (own server, own devices, own
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ports) — not shared devices with another MeshCentral instance.")
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- Web UI: https://localhost:${WEB_PORT} (self-signed cert on first launch)
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- Agent listener: port ${AGENT_PORT} (devices connect here — forward this port if remote)
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- Hostname: \`$MC_HOSTNAME\` (update \`MC_HOSTNAME\` in .env if it changes)
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- App data: \`data/\`, \`files/\`, \`backups/\`
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## Manage
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\`\`\`bash
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cd $MC_DIR
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docker compose up -d # start
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docker compose down # stop
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docker compose logs -f # logs
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docker compose pull && docker compose up -d # update
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\`\`\`
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## First launch
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1. Open https://localhost:${WEB_PORT} (accept the self-signed cert warning)
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2. Create your admin account
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3. Go to "My Devices" → "+ Add Device" → download the agent for each OS
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4. Install the agent on every computer you want to manage
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## Remote access
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For devices outside your LAN to connect:
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- Forward **TCP port ${AGENT_PORT}** on your router to this server
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- Set \`MC_HOSTNAME\` in \`.env\` to your public domain/IP, then restart
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## Docs
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https://meshcentral.com/docs/
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MD
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local START_MC=""
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prompt_yn "Start MeshCentral${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} now? (y/n):" "y" START_MC
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if [ "$START_MC" = "y" ] || [ "$START_MC" = "Y" ]; then
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docker compose up -d && log_success "MeshCentral${INSTANCE_SUFFIX:+ ($INSTANCE_SUFFIX)} started" || log_warning "Failed to start — check: docker compose logs"
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fi
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echo ""
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echo " Access at: https://localhost:${WEB_PORT} (accept self-signed cert)"
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echo " First visit: create your admin account"
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echo ""
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}
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# Run immediately when executed directly (deferred until after function definition)
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[[ "${_RUN_STANDALONE:-0}" == 1 ]] && install_meshcentral
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