Increase text limit of maintainer_note field

Changelog: changed

app/models/ci/runner.rb

@@ -200,7 +200,7 @@ module Ci
 
     validates :config, json_schema: { filename: 'ci_runner_config' }
 
-    validates :maintenance_note, length: { maximum: 255 }
+    validates :maintenance_note, length: { maximum: 1024 }
 
     alias_attribute :maintenance_note, :maintainer_note
 

db/migrate/20220221102333_change_maintenance_note_limit_in_ci_runner.rb db/migrate/20220221102333_change_maintainer_note_limit_in_ci_runner.rb

+# frozen_string_literal: true
+
+class ChangeMaintainerNoteLimitInCiRunner < Gitlab::Database::Migration[1.0]
+  disable_ddl_transaction!
+
+  def up
+    add_text_limit :ci_runners, :maintainer_note, 1024, constraint_name: check_constraint_name(:ci_runners, :maintainer_note, 'max_length_1MB')
+    remove_text_limit :ci_runners, :maintainer_note, constraint_name: check_constraint_name(:ci_runners, :maintainer_note, 'max_length')
+  end
+
+  def down
+    # no-op: Danger of failing if there are records with length(maintainer_note) > 255
+  end
+end

db/schema_migrations/20220221102333

+7aa2cf28363e914ad83c61d45321f701a68111122c75abeb54430c4035d56677
\ No newline at end of file

db/structure.sql

@@ -12376,7 +12376,7 @@ CREATE TABLE ci_runners (
     executor_type smallint,
     maintainer_note text,
     token_expires_at timestamp with time zone,
-    CONSTRAINT check_56f5ea8804 CHECK ((char_length(maintainer_note) <= 255))
+    CONSTRAINT check_ce275cee06 CHECK ((char_length(maintainer_note) <= 1024))
 );
 
 CREATE SEQUENCE ci_runners_id_seq

doc/api/runners.md

@@ -660,7 +660,7 @@ POST /runners
 | `access_level`     | string       | no       | The access_level of the runner; `not_protected` or `ref_protected`                                                                                            |
 | `maximum_timeout`  | integer      | no       | Maximum timeout set when this runner handles the job                                                                                                          |
 | `maintainer_note`  | string       | no       | [Deprecated](https://gitlab.com/gitlab-org/gitlab/-/issues/350730), see `maintenance_note`                                                                    |
-| `maintenance_note` | string       | no       | Free-form maintenance notes for the runner (255 characters)                                                                                                   |
+| `maintenance_note` | string       | no       | Free-form maintenance notes for the runner (1024 characters)                                                                                                  |
 
 ```shell
 curl --request POST "https://gitlab.example.com/api/v4/runners" \