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yamonco:feat/langflow-helper-script
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New lxc : Langflow #1489
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a10e818
feat(langflow): add langflow ct/install script and metadata
69afbaa
fix(langflow): use ProxmoxVED URLs and align systemd conventions
f1ab2fa
refactor(langflow): align scripts with AI.md conventions
fa1fb1f
fix(langflow): remove ensurepip dependency and set app context
6b211ca
refactor(langflow): use release check helper and unpin default version
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,195 @@ | ||
| #!/usr/bin/env bash | ||
| COMMUNITY_SCRIPTS_URL="${COMMUNITY_SCRIPTS_URL:-https://git.community-scripts.org/community-scripts/ProxmoxVED/raw/branch/main}" | ||
| source <(curl -fsSL "$COMMUNITY_SCRIPTS_URL/misc/build.func") | ||
| # Copyright (c) 2021-2026 community-scripts ORG | ||
| # Author: Yamon | ||
| # License: MIT | https://github.com/community-scripts/ProxmoxVED/raw/main/LICENSE | ||
| # Source: https://www.langflow.org/ | ||
|
|
||
| APP="Langflow" | ||
| var_tags="${var_tags:-ai;interface}" | ||
| var_cpu="${var_cpu:-2}" | ||
| var_ram="${var_ram:-12288}" | ||
| var_disk="${var_disk:-16}" | ||
| var_os="${var_os:-debian}" | ||
| var_version="${var_version:-13}" | ||
| var_unprivileged="${var_unprivileged:-1}" | ||
|
|
||
| header_info "$APP" | ||
| variables | ||
| color | ||
| catch_errors | ||
|
|
||
| function update_script() { | ||
| header_info | ||
| check_container_storage | ||
| check_container_resources | ||
|
|
||
| if [[ ! -d /opt/langflow || ! -f /etc/systemd/system/langflow.service || ! -x /opt/langflow/.venv/bin/python ]]; then | ||
| msg_error "No ${APP} Installation Found!" | ||
| exit | ||
| fi | ||
|
|
||
| local TS BACKUP_DIR OLD_VERSION TARGET_VERSION | ||
| TS="$(date +%Y%m%d-%H%M%S)" | ||
| BACKUP_DIR="/opt/langflow/backups/${TS}" | ||
| TARGET_VERSION="${LANGFLOW_TARGET_VERSION:-latest}" | ||
| OLD_VERSION="$([ -x /opt/langflow/.venv/bin/python ] && /opt/langflow/.venv/bin/python -m pip show langflow 2>/dev/null | awk '/^Version:/ {print $2}')" | ||
| msg_info "Installed Version: ${OLD_VERSION:-unknown}" | ||
| if [[ "${TARGET_VERSION}" == "latest" ]] && ! check_for_gh_release "langflow" "langflow-ai/langflow"; then | ||
| msg_ok "Langflow is already up to date" | ||
| exit | ||
| fi | ||
|
|
||
| msg_info "Preparing Backup" | ||
| mkdir -p "${BACKUP_DIR}" | ||
| if [[ -f /opt/langflow/.env ]]; then | ||
| cp -a /opt/langflow/.env "${BACKUP_DIR}/.env" | ||
| fi | ||
| if compgen -G "/opt/langflow/data/langflow.db*" >/dev/null; then | ||
| cp -a /opt/langflow/data/langflow.db* "${BACKUP_DIR}/" | ||
| fi | ||
| msg_ok "Backup saved to ${BACKUP_DIR}" | ||
|
|
||
| msg_info "Stopping Service" | ||
| systemctl stop langflow | ||
| msg_ok "Stopped Service" | ||
|
|
||
| UV_PYTHON="3.12" setup_uv | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS:-2}" | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS:-1}" | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS:-1}" | ||
| LANGFLOW_NO_CACHE="${LANGFLOW_NO_CACHE:-false}" | ||
| UV_CACHE_ARGS=() | ||
| if [[ "${LANGFLOW_NO_CACHE,,}" == "true" || "${LANGFLOW_NO_CACHE}" == "1" ]]; then | ||
| UV_CACHE_ARGS+=(--no-cache) | ||
| fi | ||
|
|
||
| msg_info "Pinning CPU Torch" | ||
| if ! $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" \ | ||
| --index-strategy unsafe-best-match \ | ||
| --index-url https://download.pytorch.org/whl/cpu \ | ||
| --extra-index-url https://pypi.org/simple \ | ||
| "torch==2.8.0+cpu"; then | ||
| msg_error "Failed to install CPU torch" | ||
| exit 1 | ||
| fi | ||
| msg_ok "Pinned CPU Torch" | ||
|
|
||
| msg_info "Updating Langflow (${TARGET_VERSION})" | ||
| if [[ "${TARGET_VERSION}" == "latest" ]]; then | ||
| if ! $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" --upgrade langflow; then | ||
| msg_error "Langflow update failed" | ||
| if [[ -n "${OLD_VERSION}" ]]; then | ||
| msg_info "Rolling back to ${OLD_VERSION}" | ||
| $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" "langflow==${OLD_VERSION}" | ||
| fi | ||
| if [[ -f "${BACKUP_DIR}/.env" ]]; then | ||
| cp -a "${BACKUP_DIR}/.env" /opt/langflow/.env | ||
| fi | ||
| if compgen -G "${BACKUP_DIR}/langflow.db*" >/dev/null; then | ||
| cp -a "${BACKUP_DIR}/langflow.db"* /opt/langflow/data/ | ||
| fi | ||
| if ! systemctl start langflow; then | ||
| msg_error "Failed to start service after rollback" | ||
| fi | ||
| exit 1 | ||
| fi | ||
| else | ||
| if ! $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" "langflow==${TARGET_VERSION}"; then | ||
| msg_error "Langflow update to ${TARGET_VERSION} failed" | ||
| if [[ -n "${OLD_VERSION}" ]]; then | ||
| msg_info "Rolling back to ${OLD_VERSION}" | ||
| $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" "langflow==${OLD_VERSION}" | ||
| fi | ||
| if [[ -f "${BACKUP_DIR}/.env" ]]; then | ||
| cp -a "${BACKUP_DIR}/.env" /opt/langflow/.env | ||
| fi | ||
| if compgen -G "${BACKUP_DIR}/langflow.db*" >/dev/null; then | ||
| cp -a "${BACKUP_DIR}/langflow.db"* /opt/langflow/data/ | ||
| fi | ||
| if ! systemctl start langflow; then | ||
| msg_error "Failed to start service after rollback" | ||
| fi | ||
| exit 1 | ||
| fi | ||
| fi | ||
| msg_ok "Updated Langflow" | ||
|
|
||
| msg_info "Starting Service" | ||
| systemctl start langflow | ||
|
|
||
| if [[ "$(systemctl is-active langflow)" != "active" ]]; then | ||
| msg_error "Service failed to start" | ||
| if [[ -n "${OLD_VERSION}" ]]; then | ||
| msg_info "Rolling back to ${OLD_VERSION}" | ||
| $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" "langflow==${OLD_VERSION}" | ||
| if [[ -f "${BACKUP_DIR}/.env" ]]; then | ||
| cp -a "${BACKUP_DIR}/.env" /opt/langflow/.env | ||
| fi | ||
| if compgen -G "${BACKUP_DIR}/langflow.db*" >/dev/null; then | ||
| cp -a "${BACKUP_DIR}/langflow.db"* /opt/langflow/data/ | ||
| fi | ||
| if ! systemctl restart langflow; then | ||
| msg_error "Failed to restart service after rollback" | ||
| fi | ||
| fi | ||
| exit 1 | ||
| fi | ||
|
|
||
| msg_info "Running Health Check" | ||
| ensure_dependencies curl | ||
| if command -v curl >/dev/null 2>&1; then | ||
| for _ in {1..30}; do | ||
| if curl -fsS http://127.0.0.1:7860/ >/dev/null 2>&1; then | ||
| break | ||
| fi | ||
| sleep 2 | ||
| done | ||
| if ! curl -fsS http://127.0.0.1:7860/ >/dev/null 2>&1; then | ||
| msg_error "Health check failed. Check logs: journalctl -u langflow -n 100" | ||
| exit 1 | ||
| fi | ||
| else | ||
| msg_info "curl not available, skipping HTTP health check" | ||
| fi | ||
| msg_ok "Health check passed" | ||
| msg_info "If migration errors occur, review Langflow docs before using 'langflow migration --fix'" | ||
| msg_ok "Updated successfully!" | ||
| exit | ||
| } | ||
|
|
||
| start | ||
| build_container | ||
| description | ||
|
|
||
| msg_ok "Completed successfully!\n" | ||
| echo -e "${CREATING}${GN}${APP} setup has been successfully initialized!${CL}" | ||
| echo -e "${INFO}${YW} Access it using the following URL:${CL}" | ||
| echo -e "${TAB}${GATEWAY}${BGN}http://${IP}:7860${CL}" | ||
| echo -e "${INFO}${YW} Post-install credential location:${CL}" | ||
| echo -e "${TAB}${GATEWAY}${BGN}/opt/langflow/.env${CL}" |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| { | ||
| "name": "Langflow", | ||
| "slug": "langflow", | ||
| "categories": [ | ||
| 20 | ||
| ], | ||
| "date_created": "2026-02-21", | ||
| "type": "ct", | ||
| "updateable": true, | ||
| "privileged": false, | ||
| "interface_port": 7860, | ||
| "documentation": "https://docs.langflow.org/", | ||
| "website": "https://www.langflow.org/", | ||
| "logo": "https://cdn.jsdelivr.net/gh/selfhst/icons@main/webp/langflow.webp", | ||
| "config_path": "/opt/langflow/.env", | ||
| "description": "Langflow is an open-source visual framework for building LLM workflows and multi-agent applications with a drag-and-drop interface.", | ||
| "install_methods": [ | ||
| { | ||
| "type": "default", | ||
| "script": "ct/langflow.sh", | ||
| "resources": { | ||
| "cpu": 2, | ||
| "ram": 12288, | ||
| "hdd": 16, | ||
| "os": "Debian", | ||
| "version": "13" | ||
| } | ||
| } | ||
| ], | ||
| "default_credentials": { | ||
| "username": "admin", | ||
| "password": null | ||
| }, | ||
| "notes": [ | ||
| { | ||
| "text": "Admin credentials are generated during install and stored in `/opt/langflow/.env`.", | ||
| "type": "info" | ||
| }, | ||
| { | ||
| "text": "Exposed port: 7860", | ||
| "type": "info" | ||
| }, | ||
| { | ||
| "text": "Change the default admin password after first login.", | ||
| "type": "warning" | ||
| }, | ||
| { | ||
| "text": "Installation and updates can take a long time due to large Python dependencies.", | ||
| "type": "warning" | ||
| } | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| #!/usr/bin/env bash | ||
|
|
||
| # Copyright (c) 2021-2026 community-scripts ORG | ||
| # Author: Yamon | ||
| # License: MIT | https://github.com/community-scripts/ProxmoxVED/raw/main/LICENSE | ||
| # Source: https://www.langflow.org/ | ||
|
|
||
| source /dev/stdin <<<"$FUNCTIONS_FILE_PATH" | ||
| color | ||
| verb_ip6 | ||
| catch_errors | ||
| setting_up_container | ||
| network_check | ||
| update_os | ||
|
|
||
| # shellcheck disable=SC2034 | ||
| APP="langflow" | ||
| app="${app:-langflow}" | ||
| SSH_ROOT="${SSH_ROOT:-no}" | ||
|
|
||
| msg_info "Installing Dependencies" | ||
| if ! install_packages_with_retry \ | ||
| build-essential \ | ||
| python3-dev; then | ||
| msg_error "Failed to install dependencies" | ||
| exit 1 | ||
| fi | ||
| msg_ok "Installed Dependencies" | ||
|
|
||
| UV_PYTHON="3.12" setup_uv | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS:-2}" | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS:-1}" | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS:-1}" | ||
| LANGFLOW_NO_CACHE="${LANGFLOW_NO_CACHE:-false}" | ||
| UV_CACHE_ARGS=() | ||
| if [[ "${LANGFLOW_NO_CACHE,,}" == "true" || "${LANGFLOW_NO_CACHE}" == "1" ]]; then | ||
| UV_CACHE_ARGS+=(--no-cache) | ||
| fi | ||
|
|
||
| msg_info "Installing Langflow" | ||
| mkdir -p /opt/langflow/data | ||
| cd /opt/langflow || exit | ||
| $STD uv venv --clear /opt/langflow/.venv | ||
| $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" \ | ||
| --index-strategy unsafe-best-match \ | ||
| --index-url https://download.pytorch.org/whl/cpu \ | ||
| --extra-index-url https://pypi.org/simple \ | ||
| "torch==2.8.0+cpu" | ||
| $STD env \ | ||
| UV_CONCURRENT_DOWNLOADS="${UV_CONCURRENT_DOWNLOADS}" \ | ||
| UV_CONCURRENT_BUILDS="${UV_CONCURRENT_BUILDS}" \ | ||
| UV_CONCURRENT_INSTALLS="${UV_CONCURRENT_INSTALLS}" \ | ||
| uv pip install --python /opt/langflow/.venv/bin/python "${UV_CACHE_ARGS[@]}" "langflow${LANGFLOW_VERSION:+==${LANGFLOW_VERSION}}" | ||
| msg_ok "Installed Langflow" | ||
|
|
||
| msg_info "Configuring Langflow" | ||
| ADMIN_USER="admin" | ||
| ADMIN_PASS="$(openssl rand -base64 32 | tr -dc 'A-Za-z0-9' | head -c 20)" | ||
| if [[ ${#ADMIN_PASS} -lt 12 ]]; then | ||
| ADMIN_PASS="$(openssl rand -hex 16)" | ||
| fi | ||
| LANGFLOW_SECRET_KEY=$(openssl rand -base64 48 | tr -d '\n') | ||
| CPU_CORES="$(nproc 2>/dev/null || echo 2)" | ||
| if [[ "${CPU_CORES}" -ge 8 ]]; then | ||
| LANGFLOW_WORKERS_DEFAULT=4 | ||
| elif [[ "${CPU_CORES}" -ge 4 ]]; then | ||
| LANGFLOW_WORKERS_DEFAULT=2 | ||
| else | ||
| LANGFLOW_WORKERS_DEFAULT=1 | ||
| fi | ||
| cat <<EOF2 >/opt/langflow/.env | ||
| LANGFLOW_CONFIG_DIR=/opt/langflow/data | ||
| LANGFLOW_SAVE_DB_IN_CONFIG_DIR=true | ||
| LANGFLOW_DATABASE_URL=sqlite:////opt/langflow/data/langflow.db | ||
| LANGFLOW_SECRET_KEY=${LANGFLOW_SECRET_KEY} | ||
| LANGFLOW_AUTO_LOGIN=false | ||
| LANGFLOW_SUPERUSER=${ADMIN_USER} | ||
| LANGFLOW_SUPERUSER_PASSWORD=${ADMIN_PASS} | ||
| LANGFLOW_HOST=0.0.0.0 | ||
| LANGFLOW_PORT=7860 | ||
| LANGFLOW_OPEN_BROWSER=false | ||
| LANGFLOW_LOG_LEVEL=info | ||
| DO_NOT_TRACK=true | ||
| LANGFLOW_REMOVE_API_KEYS=true | ||
| LANGFLOW_FALLBACK_TO_ENV_VAR=false | ||
| LANGFLOW_STORE_ENVIRONMENT_VARIABLES=false | ||
| LANGFLOW_WORKERS=${LANGFLOW_WORKERS_DEFAULT} | ||
| LANGFLOW_WORKER_TIMEOUT=300 | ||
| LANGFLOW_HEALTH_CHECK_MAX_RETRIES=5 | ||
| LANGFLOW_LAZY_LOAD_COMPONENTS=false | ||
| EOF2 | ||
| chmod 600 /opt/langflow/.env | ||
| msg_ok "Configured Langflow" | ||
| msg_warn "Admin credentials are stored in /opt/langflow/.env" | ||
| msg_warn "Default admin user: ${ADMIN_USER}" | ||
| msg_warn "Generated admin password: ${ADMIN_PASS}" | ||
|
|
||
| msg_info "Creating Service" | ||
| cat <<'EOF2' >/etc/systemd/system/langflow.service | ||
| [Unit] | ||
| Description=Langflow Service | ||
| After=network.target | ||
|
|
||
| [Service] | ||
| Type=simple | ||
| WorkingDirectory=/opt/langflow | ||
| EnvironmentFile=/opt/langflow/.env | ||
| ExecStart=/opt/langflow/.venv/bin/langflow run --env-file /opt/langflow/.env --no-open-browser | ||
| Restart=always | ||
| RestartSec=5 | ||
|
|
||
| [Install] | ||
| WantedBy=multi-user.target | ||
| EOF2 | ||
| systemctl enable -q --now langflow | ||
| msg_ok "Created Service" | ||
|
|
||
| motd_ssh | ||
| customize | ||
| cleanup_lxc | ||
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