Rename githost.log -> git_json.log

The githost.log name was often confused with GitHost.io. Rename this to
git_json.log to make it clear it's coming from Git and that it's JSON
data.

changelogs/unreleased/sh-rename-githost-to-gitjson.yml

+---
+title: Rename githost.log -> git_json.log
+merge_request: 31634
+author:
+type: changed

doc/administration/logs.md

@@ -151,14 +151,15 @@ etc. For example:
 {"severity":"ERROR","time":"2018-11-23T15:42:11.647Z","exception":"Kubeclient::HttpError","error_code":null,"service":"Clusters::Applications::InstallService","app_id":2,"project_ids":[19],"group_ids":[],"message":"SSL_connect returned=1 errno=0 state=error: certificate verify failed (unable to get local issuer certificate)"}
 ```
 
-## `githost.log`
+## `git_json.log`
 
-This file lives in `/var/log/gitlab/gitlab-rails/githost.log` for
-Omnibus GitLab packages or in `/home/git/gitlab/log/githost.log` for
+This file lives in `/var/log/gitlab/gitlab-rails/git_json.log` for
+Omnibus GitLab packages or in `/home/git/gitlab/log/git_json.log` for
 installations from source.
 
 NOTE: **Note:**
-After 12.2, this file will be stored in JSON format.
+After 12.2, this file was renamed from `githost.log` to
+`git_json.log` and stored in JSON format.
 
 GitLab has to interact with Git repositories but in some rare cases
 something can go wrong and in this case you will know what exactly

doc/development/architecture.md

@@ -568,7 +568,7 @@ Usage: /etc/init.d/postgresql {start|stop|restart|reload|force-reload|status} [v
 
 gitlabhq (includes Unicorn and Sidekiq logs)
 
-- `/home/git/gitlab/log/` contains `application.log`, `production.log`, `sidekiq.log`, `unicorn.stdout.log`, `githost.log` and `unicorn.stderr.log` normally.
+- `/home/git/gitlab/log/` contains `application.log`, `production.log`, `sidekiq.log`, `unicorn.stdout.log`, `git_json.log` and `unicorn.stderr.log` normally.
 
 gitlab-shell
 

doc/user/admin_area/index.md

@@ -272,7 +272,7 @@ The **Logs** page provides access to the following log files:
 | Log file                | Contents |
 | :---------------------- | :------- |
 | `application.log`       | GitLab user activity |
-| `githost.log`           | Failed GitLab interaction with Git repositories |
+| `git_json.log`          | Failed GitLab interaction with Git repositories |
 | `production.log`        | Requests received from Unicorn, and the actions taken to serve those requests |
 | `sidekiq.log`           | Background jobs |
 | `repocheck.log`         | Repository activity |

lib/gitlab/git_logger.rb

@@ -3,7 +3,7 @@
 module Gitlab
   class GitLogger < JsonLogger
     def self.file_name_noext
-      'githost'
+      'git_json'
     end
   end
 end

spec/features/admin/admin_browses_logs_spec.rb

@@ -11,7 +11,7 @@ describe 'Admin browses logs' do
     visit admin_logs_path
 
     expect(page).to have_link 'application.log'
-    expect(page).to have_link 'githost.log'
+    expect(page).to have_link 'git_json.log'
     expect(page).to have_link 'test.log'
     expect(page).to have_link 'sidekiq.log'
     expect(page).to have_link 'repocheck.log'