fix: persist Langflow database across container restarts#1129
Closed
JasonOA888 wants to merge 1 commit into
Closed
fix: persist Langflow database across container restarts#1129JasonOA888 wants to merge 1 commit into
JasonOA888 wants to merge 1 commit into
Conversation
Fixes langflow-ai#1127 - Langflow flow edits no longer lost after restart ## Problem Flow edits made in Langflow UI were being lost after container restart. The langflow service only mounted /app/flows but Langflow stores its SQLite database at /root/.langflow/ by default, which was ephemeral. ## Solution 1. Add persistent volume for Langflow data directory: - Mount ${LANGFLOW_DATA_PATH:-./langflow-data} to /root/.langflow 2. Explicitly set LANGFLOW_DATABASE_URL to ensure database location 3. Document the new LANGFLOW_DATA_PATH in .env.example ## Testing - Verified volume mount configuration - Database URL format: sqlite:////root/.langflow/langflow.db Closes langflow-ai#1127
mpawlow
added a commit
that referenced
this pull request
Mar 17, 2026
Issue - #1129 Summary - Fixed Langflow data path and added LANGFLOW_CONFIG_DIR environment variable to ensure flow edits persist across container restarts. Docker Compose Configuration - Updated the Langflow container volume mount target from /root/.langflow to /app/data/.langflow to match the correct working directory for the containerized process - Added LANGFLOW_CONFIG_DIR=/app/data/.langflow environment variable so Langflow uses the correct directory for all configuration artifacts - Updated LANGFLOW_DATABASE_URL to reference the corrected path /app/data/.langflow/langflow.db Makefile - Added langflow-data directory cleanup to the factory-reset target, including a status message in the pre-reset summary and removal logic matching the existing opensearch-data cleanup pattern Builds on #1129
mpawlow
added a commit
that referenced
this pull request
Mar 17, 2026
Issue - #1127 Summary - Fixed Langflow data path and added LANGFLOW_CONFIG_DIR environment variable to ensure flow edits persist across container restarts. Docker Compose Configuration - Updated the Langflow container volume mount target from /root/.langflow to /app/data/.langflow to match the correct working directory for the containerized process - Added LANGFLOW_CONFIG_DIR=/app/data/.langflow environment variable so Langflow uses the correct directory for all configuration artifacts - Updated LANGFLOW_DATABASE_URL to reference the corrected path /app/data/.langflow/langflow.db Makefile - Added langflow-data directory cleanup to the factory-reset target, including a status message in the pre-reset summary and removal logic matching the existing opensearch-data cleanup pattern Builds on #1129
mpawlow
added a commit
that referenced
this pull request
Mar 18, 2026
Issue - #1127 Summary - User-made edits to Langflow flows were silently discarded on every container restart. - Two root causes were identified and corrected: - (1) The Langflow data volume was mounted to the wrong path inside the container. - (2) The LANGFLOW_LOAD_FLOWS_PATH mechanism performed a blind upsert of all flows on every startup, overwriting any changes made in the Langflow UI. Docker / Infrastructure - Corrected the Langflow data volume mount target from /root/.langflow to /app/langflow-data in docker-compose.yml - Replaced LANGFLOW_LOAD_FLOWS_PATH env var with LANGFLOW_CONFIG_DIR=/app/langflow-data so Langflow resolves its config and database from the persisted volume - Updated LANGFLOW_DATABASE_URL to reference the new path (sqlite:////app/langflow-data/langflow.db) - Pre-created /app/langflow-data in Dockerfile.langflow during image build to ensure named Docker volumes are initialised with the correct ownership for the non-root container user - Added langflow-data/ directory with a .gitkeep file; updated .gitignore to track the directory stub while ignoring its contents Backend — Flow Bootstrapping - Added FlowsService.ensure_flows_exist(): a create-only startup routine that checks each configured flow ID against the Langflow API and creates missing flows from their JSON files, without ever patching or overwriting an existing flow - Replaced the LANGFLOW_LOAD_FLOWS_PATH blind-upsert behaviour with a call to ensure_flows_exist() inside startup_tasks() in src/main.py Makefile - Extended the factory-reset target to remove the langflow-data/ directory alongside opensearch-data/ and config/ Code Cleanup - Removed trailing whitespace throughout src/services/flows_service.py Builds on #1129
mpawlow
added a commit
that referenced
this pull request
Mar 19, 2026
Issue - #1127 Summary - User-made edits to Langflow flows were silently discarded on every container restart. - Two root causes were identified and corrected: - (1) The Langflow data volume was mounted to the wrong path inside the container. - (2) The LANGFLOW_LOAD_FLOWS_PATH mechanism performed a blind upsert of all flows on every startup, overwriting any changes made in the Langflow UI. Docker / Infrastructure - Corrected the Langflow data volume mount target from /root/.langflow to /app/langflow-data in docker-compose.yml - Replaced LANGFLOW_LOAD_FLOWS_PATH env var with LANGFLOW_CONFIG_DIR=/app/langflow-data so Langflow resolves its config and database from the persisted volume - Updated LANGFLOW_DATABASE_URL to reference the new path (sqlite:////app/langflow-data/langflow.db) - Pre-created /app/langflow-data in Dockerfile.langflow during image build to ensure named Docker volumes are initialised with the correct ownership for the non-root container user - Added langflow-data/ directory with a .gitkeep file; updated .gitignore to track the directory stub while ignoring its contents Backend — Flow Bootstrapping - Added FlowsService.ensure_flows_exist(): a create-only startup routine that checks each configured flow ID against the Langflow API and creates missing flows from their JSON files, without ever patching or overwriting an existing flow - Replaced the LANGFLOW_LOAD_FLOWS_PATH blind-upsert behaviour with a call to ensure_flows_exist() inside startup_tasks() in src/main.py Makefile - Extended the factory-reset target to remove the langflow-data/ directory alongside opensearch-data/ and config/ Code Cleanup - Removed trailing whitespace throughout src/services/flows_service.py Builds on #1129
mpawlow
added a commit
that referenced
this pull request
Mar 19, 2026
Issue - #1127 Summary - User-made edits to Langflow flows were silently discarded on every container restart. - Two root causes were identified and corrected: - (1) The Langflow data volume was mounted to the wrong path inside the container. - (2) The LANGFLOW_LOAD_FLOWS_PATH mechanism performed a blind upsert of all flows on every startup, overwriting any changes made in the Langflow UI. Docker / Infrastructure - Corrected the Langflow data volume mount target from /root/.langflow to /app/langflow-data in docker-compose.yml - Replaced LANGFLOW_LOAD_FLOWS_PATH env var with LANGFLOW_CONFIG_DIR=/app/langflow-data so Langflow resolves its config and database from the persisted volume - Updated LANGFLOW_DATABASE_URL to reference the new path (sqlite:////app/langflow-data/langflow.db) - Pre-created /app/langflow-data in Dockerfile.langflow during image build to ensure named Docker volumes are initialised with the correct ownership for the non-root container user - Added langflow-data/ directory with a .gitkeep file; updated .gitignore to track the directory stub while ignoring its contents Backend — Flow Bootstrapping - Added FlowsService.ensure_flows_exist(): a create-only startup routine that checks each configured flow ID against the Langflow API and creates missing flows from their JSON files, without ever patching or overwriting an existing flow - Replaced the LANGFLOW_LOAD_FLOWS_PATH blind-upsert behaviour with a call to ensure_flows_exist() inside startup_tasks() in src/main.py Makefile - Extended the factory-reset target to remove the langflow-data/ directory alongside opensearch-data/ and config/ Code Cleanup - Removed trailing whitespace throughout src/services/flows_service.py Builds on #1129
Contributor
Author
Collaborator
|
Thanks for the contribution, @JasonOA888 🙏 |
mpawlow
added a commit
that referenced
this pull request
Mar 19, 2026
Issue - #1127 Summary - User-made edits to Langflow flows were silently discarded on every container restart. - Two root causes were identified and corrected: - (1) The Langflow data volume was mounted to the wrong path inside the container. - (2) The LANGFLOW_LOAD_FLOWS_PATH mechanism performed a blind upsert of all flows on every startup, overwriting any changes made in the Langflow UI. Docker / Infrastructure - Corrected the Langflow data volume mount target from /root/.langflow to /app/langflow-data in docker-compose.yml - Replaced LANGFLOW_LOAD_FLOWS_PATH env var with LANGFLOW_CONFIG_DIR=/app/langflow-data so Langflow resolves its config and database from the persisted volume - Updated LANGFLOW_DATABASE_URL to reference the new path (sqlite:////app/langflow-data/langflow.db) - Pre-created /app/langflow-data in Dockerfile.langflow during image build to ensure named Docker volumes are initialised with the correct ownership for the non-root container user - Added langflow-data/ directory with a .gitkeep file; updated .gitignore to track the directory stub while ignoring its contents Backend — Flow Bootstrapping - Added FlowsService.ensure_flows_exist(): a create-only startup routine that checks each configured flow ID against the Langflow API and creates missing flows from their JSON files, without ever patching or overwriting an existing flow - Replaced the LANGFLOW_LOAD_FLOWS_PATH blind-upsert behaviour with a call to ensure_flows_exist() inside startup_tasks() in src/main.py Makefile - Extended the factory-reset target to remove the langflow-data/ directory alongside opensearch-data/ and config/ Code Cleanup - Removed trailing whitespace throughout src/services/flows_service.py Builds on #1129
mpawlow
added a commit
that referenced
this pull request
Mar 19, 2026
Issue - #1127 Summary - User-made edits to Langflow flows were silently discarded on every container restart. - Two root causes were identified and corrected: - (1) The Langflow data volume was mounted to the wrong path inside the container. - (2) The LANGFLOW_LOAD_FLOWS_PATH mechanism performed a blind upsert of all flows on every startup, overwriting any changes made in the Langflow UI. Docker / Infrastructure - Corrected the Langflow data volume mount target from /root/.langflow to /app/langflow-data in docker-compose.yml - Replaced LANGFLOW_LOAD_FLOWS_PATH env var with LANGFLOW_CONFIG_DIR=/app/langflow-data so Langflow resolves its config and database from the persisted volume - Updated LANGFLOW_DATABASE_URL to reference the new path (sqlite:////app/langflow-data/langflow.db) - Pre-created /app/langflow-data in Dockerfile.langflow during image build to ensure named Docker volumes are initialised with the correct ownership for the non-root container user - Added langflow-data/ directory with a .gitkeep file; updated .gitignore to track the directory stub while ignoring its contents Backend — Flow Bootstrapping - Added FlowsService.ensure_flows_exist(): a create-only startup routine that checks each configured flow ID against the Langflow API and creates missing flows from their JSON files, without ever patching or overwriting an existing flow - Replaced the LANGFLOW_LOAD_FLOWS_PATH blind-upsert behaviour with a call to ensure_flows_exist() inside startup_tasks() in src/main.py Makefile - Extended the factory-reset target to remove the langflow-data/ directory alongside opensearch-data/ and config/ Code Cleanup - Removed trailing whitespace throughout src/services/flows_service.py Builds on #1129
mpawlow
added a commit
that referenced
this pull request
Mar 20, 2026
Issue - #1127 Summary - User-made edits to Langflow flows were silently discarded on every container restart. - Two root causes were identified and corrected: - (1) The Langflow data volume was mounted to the wrong path inside the container. - (2) The LANGFLOW_LOAD_FLOWS_PATH mechanism performed a blind upsert of all flows on every startup, overwriting any changes made in the Langflow UI. Docker / Infrastructure - Corrected the Langflow data volume mount target from /root/.langflow to /app/langflow-data in docker-compose.yml - Replaced LANGFLOW_LOAD_FLOWS_PATH env var with LANGFLOW_CONFIG_DIR=/app/langflow-data so Langflow resolves its config and database from the persisted volume - Updated LANGFLOW_DATABASE_URL to reference the new path (sqlite:////app/langflow-data/langflow.db) - Pre-created /app/langflow-data in Dockerfile.langflow during image build to ensure named Docker volumes are initialised with the correct ownership for the non-root container user - Added langflow-data/ directory with a .gitkeep file; updated .gitignore to track the directory stub while ignoring its contents Backend — Flow Bootstrapping - Added FlowsService.ensure_flows_exist(): a create-only startup routine that checks each configured flow ID against the Langflow API and creates missing flows from their JSON files, without ever patching or overwriting an existing flow - Replaced the LANGFLOW_LOAD_FLOWS_PATH blind-upsert behaviour with a call to ensure_flows_exist() inside startup_tasks() in src/main.py Makefile - Extended the factory-reset target to remove the langflow-data/ directory alongside opensearch-data/ and config/ Code Cleanup - Removed trailing whitespace throughout src/services/flows_service.py Builds on #1129
mpawlow
added a commit
that referenced
this pull request
Mar 23, 2026
Issue - #1127 Summary - User-made edits to Langflow flows were silently discarded on every container restart. - Two root causes were identified and corrected: - (1) The Langflow data volume was mounted to the wrong path inside the container. - (2) The LANGFLOW_LOAD_FLOWS_PATH mechanism performed a blind upsert of all flows on every startup, overwriting any changes made in the Langflow UI. Docker / Infrastructure - Corrected the Langflow data volume mount target from /root/.langflow to /app/langflow-data in docker-compose.yml - Replaced LANGFLOW_LOAD_FLOWS_PATH env var with LANGFLOW_CONFIG_DIR=/app/langflow-data so Langflow resolves its config and database from the persisted volume - Updated LANGFLOW_DATABASE_URL to reference the new path (sqlite:////app/langflow-data/langflow.db) - Pre-created /app/langflow-data in Dockerfile.langflow during image build to ensure named Docker volumes are initialised with the correct ownership for the non-root container user - Added langflow-data/ directory with a .gitkeep file; updated .gitignore to track the directory stub while ignoring its contents Backend — Flow Bootstrapping - Added FlowsService.ensure_flows_exist(): a create-only startup routine that checks each configured flow ID against the Langflow API and creates missing flows from their JSON files, without ever patching or overwriting an existing flow - Replaced the LANGFLOW_LOAD_FLOWS_PATH blind-upsert behaviour with a call to ensure_flows_exist() inside startup_tasks() in src/main.py Makefile - Extended the factory-reset target to remove the langflow-data/ directory alongside opensearch-data/ and config/ Code Cleanup - Removed trailing whitespace throughout src/services/flows_service.py Builds on #1129
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Summary
Fixes #1127 - Langflow flow edits were being lost after container restart.
Problem
The
langflowservice in docker-compose.yml only mounted/app/flowsfor flow files, but Langflow stores its SQLite database at/root/.langflow/by default. This directory was ephemeral, causing all flow edits to be lost on container restart.Solution
Add persistent volume for Langflow data directory:
${LANGFLOW_DATA_PATH:-./langflow-data}to/root/.langflowExplicitly set database location via
LANGFLOW_DATABASE_URL:sqlite:////root/.langflow/langflow.dbDocument new environment variable in
.env.example:LANGFLOW_DATA_PATH=./langflow-dataChanges
docker-compose.yml/root/.langflow+LANGFLOW_DATABASE_URLenv var.env.exampleLANGFLOW_DATA_PATHdocumentationTesting
OPENSEARCH_DATA_PATHBackward Compatibility
./langflow-data)Closes #1127