wmantly
ec168411bf
Rework the installer so it doubles as an updater:
- Idempotent throughout: `install -d` for dirs, apt source lists rewritten
in place, `gpg --dearmor --yes`, fallback cert generated only if missing,
repo cloned or fast-forwarded, and `ln -sfn` symlinks.
- Config is now symlinked straight from the checked-out repo instead of
wget-ing raw files from GitHub. /etc/openresty/{nginx.conf,autossl.conf,
sites-enabled/000-proxy}, the targetinfo.lua lualib, and the systemd unit
all point at $REPO_DIR/ops, so an update is just `git pull` + reload with
no re-copying. This also drops the external t42-common raw-file
dependency (autossl.conf / proxy.conf now come from this repo).
- Validate `openresty -t` before reloading so a bad config can't take the
proxy down; reload if running else restart.
- Fix prior bugs: stray `curl sudo apt-get update`, duplicate openssl cert
line, and `cd ../nodejs` (now cd $REPO_DIR/nodejs). Require root; add a
BRANCH override (default master).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
105 lines
3.6 KiB
Bash
Executable File
105 lines
3.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Install / update the Theta42 proxy on a fresh or existing host.
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#
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# This script is idempotent: run it to install, and re-run it to update. It
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# installs system dependencies (Node, OpenResty, Redis, Lua modules), checks
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# out (or fast-forwards) the repo at $REPO_DIR, and symlinks the OpenResty and
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# systemd config straight from the repo. Because the config is symlinked, an
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# update is just "git pull + reload" -- the files under /etc always track the
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# repo, so there is nothing to re-copy.
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#
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# Usage: sudo ./install.sh
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set -euo pipefail
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REPO_URL="https://github.com/theta42/proxy.git"
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REPO_DIR="/var/www/proxy"
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BRANCH="${BRANCH:-master}"
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NODE_MAJOR=22
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if [ "$(id -u)" -ne 0 ]; then
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echo "This script must be run as root (try: sudo $0)" >&2
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exit 1
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fi
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# Symlink $1 -> $2, replacing whatever is already at $2 (idempotent).
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link(){
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ln -sfn "$1" "$2"
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echo "linked $2 -> $1"
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}
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echo "==> Base packages"
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apt-get update
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apt-get install -y --no-install-recommends \
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libpam0g-dev build-essential redis-server luarocks \
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wget gnupg ca-certificates curl git lsb-release
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echo "==> Node.js ${NODE_MAJOR}.x apt source"
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install -d -m 0755 /etc/apt/keyrings
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curl -fsSL https://deb.nodesource.com/gpgkey/nodesource-repo.gpg.key \
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| gpg --dearmor --yes -o /etc/apt/keyrings/nodesource.gpg
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echo "deb [signed-by=/etc/apt/keyrings/nodesource.gpg] https://deb.nodesource.com/node_${NODE_MAJOR}.x nodistro main" \
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> /etc/apt/sources.list.d/nodesource.list
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echo "==> OpenResty apt source"
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wget -qO- https://openresty.org/package/pubkey.gpg \
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| gpg --dearmor --yes -o /usr/share/keyrings/openresty.gpg
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echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/openresty.gpg] http://openresty.org/package/ubuntu $(lsb_release -sc) main" \
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> /etc/apt/sources.list.d/openresty.list
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echo "==> Install Node.js + OpenResty"
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apt-get update
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apt-get install -y nodejs openresty
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echo "==> Lua modules"
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luarocks install lua-resty-auto-ssl
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luarocks install luasocket
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echo "==> Fallback SSL cert"
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install -d /etc/ssl
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if [ ! -f /etc/ssl/resty-auto-ssl-fallback.crt ]; then
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openssl req -new -newkey rsa:2048 -days 3650 -nodes -x509 \
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-subj '/CN=sni-support-required-for-valid-ssl' \
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-keyout /etc/ssl/resty-auto-ssl-fallback.key \
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-out /etc/ssl/resty-auto-ssl-fallback.crt
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else
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echo "fallback cert already present, skipping"
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fi
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echo "==> Repo checkout at ${REPO_DIR} (branch ${BRANCH})"
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install -d "$(dirname "$REPO_DIR")"
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if [ -d "$REPO_DIR/.git" ]; then
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git -C "$REPO_DIR" fetch --prune origin
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git -C "$REPO_DIR" checkout "$BRANCH"
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git -C "$REPO_DIR" pull --ff-only origin "$BRANCH"
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else
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git clone --branch "$BRANCH" "$REPO_URL" "$REPO_DIR"
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fi
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echo "==> Symlink config from the repo"
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install -d /etc/openresty/sites-enabled /var/log/nginx
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link "$REPO_DIR/ops/nginx_conf/nginx.conf" /etc/openresty/nginx.conf
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link "$REPO_DIR/ops/nginx_conf/autossl.conf" /etc/openresty/autossl.conf
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link "$REPO_DIR/ops/nginx_conf/proxy.conf" /etc/openresty/sites-enabled/000-proxy
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link "$REPO_DIR/ops/nginx_conf/targetinfo.lua" /usr/local/openresty/lualib/targetinfo.lua
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link "$REPO_DIR/ops/proxy.service" /etc/systemd/system/proxy.service
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echo "==> Node dependencies"
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( cd "$REPO_DIR/nodejs" && npm install )
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echo "==> Services"
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systemctl daemon-reload
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systemctl enable --now proxy.service
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systemctl restart proxy.service
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# Validate the OpenResty config before (re)starting so a bad edit can't take
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# the proxy down; reload if already running, otherwise start it.
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if openresty -t; then
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systemctl reload openresty 2>/dev/null || systemctl restart openresty
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else
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echo "openresty config test FAILED -- not reloading" >&2
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exit 1
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fi
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echo "==> Done. Update later with: sudo BRANCH=${BRANCH} $0"
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