Introduction

Updating Grafana plugins is essential for security patches and new features, but updates can fail due to version conflicts, dependency issues, or breaking changes. When grafana-cli plugins update fails or leaves Grafana in a broken state, you need to understand how to diagnose the issue and potentially roll back to a working version.

Symptoms

  • grafana-cli plugins update fails with "update failed" or "download error"
  • Plugin update succeeds but Grafana fails to start
  • Dashboards show "plugin not found" after update
  • Error in logs: "plugin signature verification failed"
  • Updated plugin causes panel rendering errors or missing features
  • Grafana web interface shows blank panels or errors after update

Common Causes

  • New plugin version requires a newer Grafana version
  • Plugin update broke backward compatibility with existing dashboards
  • Plugin signature changed or plugin was removed from the catalog
  • Network issues interrupted the download, leaving corrupted files
  • Plugin dependencies conflict with other installed plugins
  • Insufficient disk space during the update process

Step-by-Step Fix

Pre-Update Checks

  1. 1.Check current Grafana and plugin versions:
  2. 2.```bash
  3. 3.grafana-cli --version
  4. 4.grafana-cli plugins ls
  5. 5.`
  6. 6.Check available updates and their requirements:
  7. 7.```bash
  8. 8.grafana-cli plugins list-versions <plugin-id>
  9. 9.# Example:
  10. 10.grafana-cli plugins list-versions grafana-clock-panel
  11. 11.`
  12. 12.Review plugin changelog for breaking changes:
  13. 13.```bash
  14. 14.# Check on GitHub or Grafana plugin page
  15. 15.curl -s https://grafana.com/api/plugins/grafana-clock-panel | jq '.versions[] | select(.version == "2.1.0")'
  16. 16.`

Fixing Update Failures

  1. 1.If update fails mid-way, remove and reinstall:
  2. 2.```bash
  3. 3.# Remove corrupted plugin
  4. 4.grafana-cli plugins uninstall <plugin-id>

# Install specific working version grafana-cli plugins install <plugin-id> <version>

# Restart Grafana systemctl restart grafana-server ```

  1. 1.For signature verification errors, check plugin signing status:
  2. 2.```bash
  3. 3.grafana-cli plugins ls
  4. 4.# Look for "signed: false" in output

# For community plugins, verify on grafana.com curl -s https://grafana.com/api/plugins/<plugin-id> | jq '.signed' ```

  1. 1.If Grafana version is incompatible, either upgrade Grafana or install an older plugin version:
  2. 2.```bash
  3. 3.# Install older compatible version
  4. 4.grafana-cli plugins install <plugin-id> 1.0.0
  5. 5.`

Rolling Back a Failed Update

  1. 1.If the plugin was updated but causes issues, roll back:
  2. 2.```bash
  3. 3.# Uninstall the problematic version
  4. 4.grafana-cli plugins uninstall <plugin-id>

# Install the previous working version grafana-cli plugins install <plugin-id> <old-version>

# Restart Grafana systemctl restart grafana-server ```

  1. 1.For Docker installations with volume persistence:
  2. 2.```bash
  3. 3.# Stop the container
  4. 4.docker stop grafana

# Navigate to plugins directory on host cd /var/lib/docker/volumes/grafana-storage/_data/plugins

# Remove updated plugin rm -rf <plugin-id>

# Extract old version from backup or download wget https://github.com/<plugin-repo>/releases/download/v<version>/<plugin-id>-<version>.zip unzip <plugin-id>-<version>.zip -d <plugin-id>

# Restart container docker start grafana ```

Dependency Conflicts

  1. 1.Check for plugin dependencies:
  2. 2.```bash
  3. 3.grafana-cli plugins ls
  4. 4.cat /var/lib/grafana/plugins/<plugin-id>/plugin.json | jq '.dependencies'
  5. 5.`
  6. 6.Install missing dependencies:
  7. 7.```bash
  8. 8.grafana-cli plugins install <dependency-plugin-id>
  9. 9.`

Update All Plugins Safely

  1. 1.Update all plugins with verbose output to catch errors:
  2. 2.```bash
  3. 3.grafana-cli --verbose plugins update-all
  4. 4.`
  5. 5.For production systems, update plugins one at a time:
  6. 6.```bash
  7. 7.for plugin in $(grafana-cli plugins ls | grep -v "id" | awk '{print $1}'); do
  8. 8.echo "Updating $plugin..."
  9. 9.grafana-cli plugins update $plugin
  10. 10.systemctl restart grafana-server
  11. 11.sleep 10
  12. 12.# Verify Grafana is healthy
  13. 13.curl -s http://localhost:3000/api/health
  14. 14.done
  15. 15.`

Verification

  • Check all plugins are loaded: grafana-cli plugins ls
  • Verify Grafana health: curl http://localhost:3000/api/health
  • Open dashboards that use the updated plugins and confirm they render correctly
  • Check logs for any plugin-related errors: journalctl -u grafana-server | grep -i plugin