add backup

.gitignore

@@ -0,0 +1,3 @@
+loki-server/data/grafana/backup/*
+
+!.gitkeep

loki-server/README.md

@@ -1,8 +1,15 @@
 # tweaks
 
-grafana:
+## grafana:
+
 1. backup
 
 ```bash
-docker run --rm --volumes-from grafana-storage -v $(pwd):/backup ubuntu tar xcvf /backup/grafana-backup.tar.gz /var/lib/grafana
+docker run --rm --volumes-from grafana -v $(pwd)/data/grafana/backup:/backup alpine tar cfv /backup/grafana-backup.tgz /var/lib/grafana
+```
+
+2. restore
+
+```bash
+docker run --rm --volumes-from grafana -v $(pwd)/data/grafana/backup:/backup ubuntu bash -c "cd /var/lib/grafana && tar xvf /backup/grafana-backup.tgz --overwrite --strip-components 1"
 ```

loki-server/docker-compose.yaml

@@ -25,6 +25,7 @@ services:
       - ./data/grafana/grafana.ini:/etc/grafana/grafana.ini
       - ./data/grafana/ldap.toml:/etc/grafana/ldap.toml
       - ./data/grafana/datasources.yaml:/etc/grafana/provisioning/datasources/datasources.yaml
+      - ./data/grafana/backup:/backup
       - grafana-storage:/var/lib/grafana
     expose:
      - 3000