config versioningfeature/config-versioning

- added DynamicSupervisor, which starts Pleroma deps and restarts config dependent deps
- added versioning for in database config. New version is created from
changes which are passed to config update/delete endpoint. Every version
contains backup with all changes added through update. Versioning
supports rollbacks with N steps. With a rollback, all versions that
come after the version on which the rollback was made are deleted.

1 files changed, 21 insertions, 1 deletions

diff --git a/docs/administration/CLI_tasks/config.md b/docs/administration/CLI_tasks/config.md
index fc9f3cbd5..4657f2111 100644
--- a/docs/administration/CLI_tasks/config.md
+++ b/docs/administration/CLI_tasks/config.md
@@ -2,7 +2,7 @@
 
 {! backend/administration/CLI_tasks/general_cli_task_info.include !}
 
-## Transfer config from file to DB.
+## Transfer config from file to DB
 
 !!! note
     You need to add the following to your config before executing this command:
@@ -154,4 +154,24 @@ This forcibly removes all saved values in the database.
 
     ```sh
     mix pleroma.config [--force] reset
+
+## Rollback config version
+
+!!! note
+    You need to add the following to your config before executing this command:
+
+    ```elixir
+    config :pleroma, configurable_from_database: true
+    ```
+
+Rollback will restore last backup by default. If you want to restore older version use `-s` parameter.
+
+=== "OTP"
+    ```sh
+     ./bin/pleroma_ctl config rollback [-s 2]
+    ```
+
+=== "From Source"
+    ```sh
+    mix pleroma.config rollback [-s 2]
     ```