Update more redirected or 404ing links

Update links in various admin, api and raketasks docs

doc/administration/auth/how_to_configure_ldap_gitlab_ce/index.md

@@ -18,12 +18,12 @@ The main reason organizations choose to utilize a LDAP server is to keep the ent
 
 There are many commercial and open source [directory servers](https://en.wikipedia.org/wiki/Directory_service#LDAP_implementations) that support the LDAP protocol. Deciding on the right directory server highly depends on the existing IT environment in which the server will be integrated with.
 
-For example, [Active Directory](https://technet.microsoft.com/en-us/library/hh831484(v=ws.11).aspx) is generally favored in a primarily Windows environment, as this allows quick integration with existing services. Other popular directory services include:
+For example, [Active Directory](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/hh831484(v=ws.11)) is generally favored in a primarily Windows environment, as this allows quick integration with existing services. Other popular directory services include:
 
-- [Oracle Internet Directory](http://www.oracle.com/technetwork/middleware/id-mgmt/overview/index-082035.html)
+- [Oracle Internet Directory](https://www.oracle.com/middleware/technologies/internet-directory.html)
 - [OpenLDAP](http://www.openldap.org/)
 - [389 Directory](http://directory.fedoraproject.org/)
-- [OpenDJ](https://forgerock.org/opendj/)
+- [OpenDJ (Renamed to Foregerock Directory Services)](https://www.forgerock.com/platform/directory-services)
 - [ApacheDS](https://directory.apache.org/)
 
 > GitLab uses the [Net::LDAP](https://rubygems.org/gems/net-ldap) library under the hood. This means it supports all [IETF](https://tools.ietf.org/html/rfc2251) compliant LDAPv3 servers.
@@ -32,9 +32,9 @@ For example, [Active Directory](https://technet.microsoft.com/en-us/library/hh83
 
 We won't cover the installation and configuration of Windows Server or Active Directory Domain Services in this tutorial. There are a number of resources online to guide you through this process:
 
-- Install Windows Server 2012  - (`technet.microsoft.com`) - [Installing Windows Server 2012](https://technet.microsoft.com/en-us/library/jj134246(v=ws.11).aspx)
+- Install Windows Server 2012  - (`technet.microsoft.com`) - [Installing Windows Server 2012](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-R2-and-2012/jj134246(v=ws.11))
 
-- Install Active Directory Domain Services (AD DS) (`technet.microsoft.com`)- [Install Active Directory Domain Services](https://technet.microsoft.com/windows-server-docs/identity/ad-ds/deploy/install-active-directory-domain-services--level-100-#BKMK_PS)
+- Install Active Directory Domain Services (AD DS) (`technet.microsoft.com`)- [Install Active Directory Domain Services](https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/install-active-directory-domain-services--level-100-#BKMK_PS)
 
 > **Shortcut:** You can quickly install AD DS via PowerShell using
 `Install-WindowsFeature AD-Domain-Services -IncludeManagementTools`
@@ -97,7 +97,7 @@ People Ops US     GitLab.org/GitLab INT/Global Groups/People Ops US
 Global Admins     GitLab.org/GitLab INT/Global Groups/Global Admins
 ```
 
-> See [more information](https://technet.microsoft.com/en-us/library/ff730967.aspx) on searching Active Directory with Windows PowerShell from [The Scripting Guys](https://technet.microsoft.com/en-us/scriptcenter/dd901334.aspx)
+> See [more information](https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-powershell-1.0/ff730967(v=technet.10)) on searching Active Directory with Windows PowerShell from [The Scripting Guys](https://devblogs.microsoft.com/scripting/)
 
 ## GitLab LDAP configuration
 

doc/administration/auth/how_to_configure_ldap_gitlab_ee/index.md

@@ -110,7 +110,7 @@ gitlab_rails['ldap_servers'] = {
 Integration of GitLab with Active Directory (LDAP) reduces the complexity of user management.
 It has the advantage of improving user permission controls, whilst easing the deployment of GitLab into an existing [IT environment](https://www.techopedia.com/definition/29199/it-infrastructure). GitLab EE offers advanced group management and multiple LDAP servers.
 
-With the assistance of the [GitLab Support](https://about.gitlab.com/support) team, setting up GitLab with an existing AD/LDAP solution will be a smooth and painless process.
+With the assistance of the [GitLab Support](https://about.gitlab.com/support/) team, setting up GitLab with an existing AD/LDAP solution will be a smooth and painless process.
 
 <!-- ## Troubleshooting
 

doc/administration/auth/ldap-ee.md

@@ -415,7 +415,7 @@ main: # 'main' is the GitLab 'provider ID' of this LDAP server
 
 [^1]: In Active Directory, a user is marked as disabled/blocked if the user
       account control attribute (`userAccountControl:1.2.840.113556.1.4.803`)
-      has bit 2 set. See <https://ctogonewild.com/2009/09/03/bitmask-searches-in-ldap/>
+      has bit 2 set. See <https://ctovswild.com/2009/09/03/bitmask-searches-in-ldap/>
       for more information.
 
 ### User DN has changed

doc/administration/auth/ldap.md

@@ -408,7 +408,7 @@ group, you can use the following syntax:
 ```
 
 Find more information about this "LDAP_MATCHING_RULE_IN_CHAIN" filter at
-<https://docs.microsoft.com/en-us/windows/desktop/ADSI/search-filter-syntax>. Support for
+<https://docs.microsoft.com/en-us/windows/win32/adsi/search-filter-syntax>. Support for
 nested members in the user filter should not be confused with
 [group sync nested groups support](ldap-ee.md#supported-ldap-group-typesattributes). **(STARTER ONLY)**
 

doc/administration/housekeeping.md

 # Housekeeping
 
-> [Introduced][ce-2371] in GitLab 8.4.
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/issues/3041) in GitLab 8.4.
 
 ## Automatic housekeeping
 
@@ -23,16 +23,12 @@ For example in the following scenario a `git repack -d` will be executed:
 When the `pushes_since_gc` value is 50 a `repack -A -d --pack-kept-objects` will run, similarly when
 the `pushes_since_gc` value is 200 a `git gc` will be run.
 
-- `git gc` ([man page][man-gc]) runs a number of housekeeping tasks,
+- `git gc` ([man page](https://mirrors.edge.kernel.org/pub/software/scm/git/docs/git-gc.html)) runs a number of housekeeping tasks,
   such as compressing filerevisions (to reduce disk space and increase performance)
   and removing unreachable objects which may have been created from prior invocations of
   `git add`.
-- `git repack` ([man page][man-repack]) re-organize existing packs into a single, more efficient pack.
+- `git repack` ([man page](https://mirrors.edge.kernel.org/pub/software/scm/git/docs/git-repack.html)) re-organize existing packs into a single, more efficient pack.
 
 You can find this option under your project's **Settings > General > Advanced**.
 
 ![Housekeeping settings](img/housekeeping_settings.png)
-
-[ce-2371]: https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/2371 "Housekeeping merge request"
-[man-gc]: https://www.kernel.org/pub/software/scm/git/docs/git-gc.html "git gc man page"
-[man-repack]: https://www.kernel.org/pub/software/scm/git/docs/git-repack.html

doc/administration/index.md

@@ -97,7 +97,7 @@ Learn how to install, configure, update, and maintain your GitLab instance.
 
 ### GitLab platform integrations
 
-- [Mattermost](https://docs.gitlab.com/omnibus/gitlab-mattermost/): Integrate with [Mattermost](https://about.mattermost.com/), an open source, private cloud workplace for web messaging.
+- [Mattermost](https://docs.gitlab.com/omnibus/gitlab-mattermost/): Integrate with [Mattermost](https://mattermost.com), an open source, private cloud workplace for web messaging.
 - [PlantUML](integration/plantuml.md): Create simple diagrams in AsciiDoc and Markdown documents
   created in snippets, wikis, and repos.
 - [Web terminals](integration/terminal.md): Provide terminal access to your applications deployed to Kubernetes from within GitLab's CI/CD [environments](../ci/environments.md#web-terminals).

doc/administration/troubleshooting/debug.md

@@ -211,5 +211,5 @@ The output in `/tmp/unicorn.txt` may help diagnose the root cause.
 
 ## More information
 
-- [Debugging Stuck Ruby Processes](https://blog.newrelic.com/2013/04/29/debugging-stuck-ruby-processes-what-to-do-before-you-kill-9/)
+- [Debugging Stuck Ruby Processes](https://blog.newrelic.com/engineering/debugging-stuck-ruby-processes-what-to-do-before-you-kill-9/)
 - [Cheatsheet of using gdb and ruby processes](gdb-stuck-ruby.txt)

doc/administration/troubleshooting/gitlab_rails_cheat_sheet.md

@@ -701,7 +701,8 @@ MergeRequests::RebaseService.new(m.target_project, u).execute(m)
 
 ### Cancel stuck pending pipelines
 
-See <https://gitlab.com/gitlab-com/support-forum/issues/2449#note_41929707>.
+For more information, see the [confidential issue](../../user/project/issues/confidential_issues.md)
+`https://gitlab.com/gitlab-com/support-forum/issues/2449#note_41929707`.
 
 ```ruby
 Ci::Pipeline.where(project_id: p.id).where(status: 'pending').count

doc/administration/troubleshooting/kubernetes_cheat_sheet.md

@@ -191,8 +191,8 @@ and they will assist you with any issues you are having.
 
 ## Installation of minimal GitLab config via Minukube on macOS
 
-This section is based on [Developing for Kubernetes with Minikube](https://gitlab.com/gitlab-org/charts/gitlab/blob/master/doc/minikube/index.md)
-and [Helm](https://gitlab.com/gitlab-org/charts/gitlab/blob/master/doc/helm/index.md). Refer
+This section is based on [Developing for Kubernetes with Minikube](https://docs.gitlab.com/charts/development/minikube/index.html)
+and [Helm](https://docs.gitlab.com/charts/installation/tools.html#helm). Refer
 to those documents for details.
 
 - Install Kubectl via Homebrew:

doc/api/README.md

@@ -329,7 +329,7 @@ curl --request PUT --header "PRIVATE-TOKEN: <your_access_token>" "https://gitlab
 
 ### Pagination Link header
 
-[Link headers](http://www.w3.org/wiki/LinkHeader) are sent back with each
+[Link headers](https://www.w3.org/wiki/LinkHeader) are sent back with each
 response. They have `rel` set to prev/next/first/last and contain the relevant
 URL. Please use these links instead of generating your own URLs.
 
@@ -563,7 +563,7 @@ The correct encoding for the query parameter would be:
 ## Clients
 
 There are many unofficial GitLab API Clients for most of the popular
-programming languages. Visit the [GitLab website] for a complete list.
+programming languages. Visit the [GitLab website](https://about.gitlab.com/partners/#api-clients) for a complete list.
 
 ## Rate limits
 
@@ -572,7 +572,6 @@ For administrator documentation on rate limit settings, see
 specifically used by GitLab.com, see
 [GitLab.com-specific rate limits](../user/gitlab_com/index.md#gitlabcom-specific-rate-limits).
 
-[GitLab website]: https://about.gitlab.com/applications/#api-clients "Clients using the GitLab API"
 [lib-api-url]: https://gitlab.com/gitlab-org/gitlab-foss/tree/master/lib/api/api.rb
 [ce-3749]: https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/3749
 [ce-5951]: https://gitlab.com/gitlab-org/gitlab-foss/merge_requests/5951

doc/api/graphql/index.md

@@ -42,7 +42,7 @@ A first iteration of a GraphQL API includes the following queries
 ### Multiplex queries
 
 GitLab supports batching queries into a single request using
-[apollo-link-batch-http](https://www.apollographql.com/docs/link/links/batch-http). More
+[apollo-link-batch-http](https://www.apollographql.com/docs/link/links/batch-http/). More
 info about multiplexed queries is also available for
 [graphql-ruby](https://graphql-ruby.org/queries/multiplex.html) the
 library GitLab uses on the backend.

doc/api/projects.md

@@ -2023,7 +2023,7 @@ Read more in the [Project members](members.md) documentation.
 
 ## Start the pull mirroring process for a Project **(STARTER)**
 
-> Introduced in [GitLab Starter](https://about.gitlab.com/pricing) 10.3.
+> Introduced in [GitLab Starter](https://about.gitlab.com/pricing/) 10.3.
 
 ```
 POST /projects/:id/mirror/pull

doc/api/users.md

@@ -596,7 +596,7 @@ PUT /user/status
 
 | Attribute | Type   | Required | Description |
 | --------- | ------ | -------- | ----------- |
-| `emoji`   | string | no     | The name of the emoji to use as status, if omitted `speech_balloon` is used. Emoji name can be one of the specified names in the [Gemojione index][gemojione-index]. |
+| `emoji`   | string | no     | The name of the emoji to use as status, if omitted `speech_balloon` is used. Emoji name can be one of the specified names in the [Gemojione index](https://github.com/bonusly/gemojione/blob/master/config/index.json). |
 | `message` | string | no     | The message to set as a status. It can also contain emoji codes. |
 
 When both parameters `emoji` and `message` are empty, the status will be cleared.
@@ -1363,5 +1363,3 @@ Example response:
 ```
 
 Please note that `last_activity_at` is deprecated, please use `last_activity_on`.
-
-[gemojione-index]: https://github.com/jonathanwiesel/gemojione/blob/master/config/index.json

doc/push_rules/push_rules.md

@@ -77,7 +77,7 @@ The following options are available.
 | Maximum file size | **Starter** 7.12 | Pushes that contain added or updated files that exceed this file size (in MB) are rejected. Set to 0 to allow files of any size. Files tracked by Git LFS are exempted. |
 
 TIP: **Tip:**
-GitLab uses [RE2 syntax](https://github.com/google/re2/wiki/Syntax) for regular expressions in push rules, and you can test them at the [GoLang regex tester](https://regex-golang.appspot.com).
+GitLab uses [RE2 syntax](https://github.com/google/re2/wiki/Syntax) for regular expressions in push rules, and you can test them at the [GoLang regex tester](https://regex-golang.appspot.com/assets/html/index.html).
 
 ## Prevent pushing secrets to the repository
 

doc/raketasks/backup_restore.md

@@ -575,7 +575,7 @@ files. GitLab does not automatically prune old files stored in a third-party
 object storage (e.g., AWS S3) because the user may not have permission to list
 and delete files. We recommend that you configure the appropriate retention
 policy for your object storage. For example, you can configure [the S3 backup
-policy as described here](http://stackoverflow.com/questions/37553070/gitlab-omnibus-delete-backup-from-amazon-s3).
+policy as described here](https://stackoverflow.com/questions/37553070/gitlab-omnibus-delete-backup-from-amazon-s3).
 
 To schedule a cron job that backs up your repositories and GitLab metadata, use the root user:
 
@@ -859,7 +859,7 @@ Be advised that, backup is successfully restored in spite of these warnings.
 The rake task runs this as the `gitlab` user which does not have the superuser access to the database. When restore is initiated it will also run as `gitlab` user but it will also try to alter the objects it does not have access to.
 Those objects have no influence on the database backup/restore but they give this annoying warning.
 
-For more information see similar questions on PostgreSQL issue tracker[here](http://www.postgresql.org/message-id/201110220712.30886.adrian.klaver@gmail.com) and [here](http://www.postgresql.org/message-id/2039.1177339749@sss.pgh.pa.us) as well as [stack overflow](http://stackoverflow.com/questions/4368789/error-must-be-owner-of-language-plpgsql).
+For more information see similar questions on PostgreSQL issue tracker[here](https://www.postgresql.org/message-id/201110220712.30886.adrian.klaver@gmail.com) and [here](https://www.postgresql.org/message-id/2039.1177339749@sss.pgh.pa.us) as well as [stack overflow](https://stackoverflow.com/questions/4368789/error-must-be-owner-of-language-plpgsql).
 
 ### When the secrets file is lost
 

doc/raketasks/list_repos.md

@@ -15,7 +15,7 @@ sudo -u git -H bundle exec rake gitlab:list_repos RAILS_ENV=production
 If you only want to list projects with recent activity you can pass
 a date with the 'SINCE' environment variable.  The time you specify
 is parsed by the Rails [TimeZone#parse
-function](http://api.rubyonrails.org/classes/ActiveSupport/TimeZone.html#method-i-parse).
+function](https://api.rubyonrails.org/classes/ActiveSupport/TimeZone.html#method-i-parse).
 
 ```
 # Omnibus

doc/ssh/README.md

@@ -84,7 +84,7 @@ stronger RSA key pair, specify the `-b` flag with a higher bit value than the
 default.
 
 The old, default password encoding for SSH private keys is
-[insecure](https://latacora.singles/2018/08/03/the-default-openssh.html);
+[insecure](https://latacora.micro.blog/the-default-openssh/);
 it's only a single round of an MD5 hash. Since OpenSSH version 6.5, you should
 use the `-o` option to `ssh-keygen` to encode your private key in a new, more
 secure format.