Fix links identified by ext link checker

Fixed many files.

doc/README.md

@@ -50,7 +50,7 @@ Have a look at some of our most popular topics:
 ## The entire DevOps Lifecycle
 
 GitLab is the first single application for software development, security,
-and operations that enables [Concurrent DevOps](https://about.gitlab.com/concurrent-devops/),
+and operations that enables [Concurrent DevOps](https://about.gitlab.com/topics/concurrent-devops/),
 making the software lifecycle faster and radically improving the speed of business.
 
 GitLab provides solutions for [each of the stages of the DevOps lifecycle](https://about.gitlab.com/stages-devops-lifecycle/):

doc/administration/consul.md

@@ -235,5 +235,5 @@ Shortly after that, the client agents should rejoin as well.
 
 If you have taken advantage of Consul to store other data and want to restore
 the failed node, follow the
-[Consul guide](https://learn.hashicorp.com/consul/day-2-operations/outage)
+[Consul guide](https://learn.hashicorp.com/tutorials/consul/recovery-outage)
 to recover a failed cluster.

doc/administration/gitaly/reference.md

@@ -233,7 +233,7 @@ The following values configure logging in Gitaly under the `[logging]` section.
 | `format` | string | no | Log format: `text` or `json`. Default: `text`. |
 | `level`  | string | no | Log level: `debug`, `info`, `warn`, `error`, `fatal`, or `panic`. Default: `info`. |
 | `sentry_dsn` | string | no | Sentry DSN for exception monitoring. |
-| `sentry_environment` | string | no | [Sentry Environment](https://docs.sentry.io/enriching-error-data/environments/) for exception monitoring. |
+| `sentry_environment` | string | no | [Sentry Environment](https://docs.sentry.io/product/sentry-basics/environments/) for exception monitoring. |
 | `ruby_sentry_dsn` | string | no | Sentry DSN for `gitaly-ruby` exception monitoring. |
 
 While the main Gitaly application logs go to `stdout`, there are some extra log

doc/development/documentation/structure.md

@@ -233,4 +233,4 @@ In the same code block, precede each with comments: `# Better` and `# Best`.
 NOTE: **Note:**
 While the bad-then-good approach is acceptable for the GitLab development guidelines, do not use it
 for user documentation. For user documentation, use "Do" and "Don't." For example, see the
-[Pajamas Design System](https://design.gitlab.com/content/punctuation).
+[Pajamas Design System](https://design.gitlab.com/content/punctuation/).

doc/development/fe_guide/style/scss.md

@@ -53,8 +53,8 @@ Examples of component classes that were created using "utility-first" include:
 
 Inspiration:
 
-- <https://tailwindcss.com/docs/utility-first/>
-- <https://tailwindcss.com/docs/extracting-components/>
+- <https://tailwindcss.com/docs/utility-first>
+- <https://tailwindcss.com/docs/extracting-components>
 
 ### Naming
 

doc/development/fe_guide/vue.md

@@ -285,7 +285,7 @@ describe('~/todos/app.vue', () => {
 ### Test the component's output
 
 The main return value of a Vue component is the rendered output. In order to test the component we
-need to test the rendered output. [Vue](https://vuejs.org/v2/guide/unit-testing.html) guide's to unit test show us exactly that:
+need to test the rendered output. Visit the [Vue testing guide](https://vuejs.org/v2/guide/testing.html#Unit-Testing).
 
 ### Events
 

doc/development/new_fe_guide/development/performance.md

@@ -10,7 +10,7 @@ Any frontend engineer can contribute to this dashboard. They can contribute by a
 There are 3 recommended high impact metrics to review on each page:
 
 - [First visual change](https://web.dev/first-meaningful-paint/)
-- [Speed Index](https://sites.google.com/a/webpagetest.org/docs/using-webpagetest/metrics/speed-index)
-- [Visual Complete 95%](https://sites.google.com/a/webpagetest.org/docs/using-webpagetest/metrics/speed-index)
+- [Speed Index](https://github.com/WPO-Foundation/webpagetest-docs/blob/master/user/Metrics/SpeedIndex.md)
+- [Visual Complete 95%](https://github.com/WPO-Foundation/webpagetest-docs/blob/master/user/Metrics/SpeedIndex.md)
 
 For these metrics, lower numbers are better as it means that the website is more performant.

doc/operations/error_tracking.md

@@ -26,7 +26,7 @@ You will need at least Maintainer [permissions](../user/permissions.md) to enabl
 GitLab provides an easy way to connect Sentry to your project:
 
 1. Sign up to Sentry.io or [deploy your own](#deploying-sentry) Sentry instance.
-1. [Create](https://docs.sentry.io/guides/tutorials/integrate-frontend/create-new-project/) a new Sentry project. For each GitLab project that you want to integrate, we recommend that you create a new Sentry project.
+1. [Create](https://docs.sentry.io/product/sentry-basics/guides/integrate-frontend/create-new-project/) a new Sentry project. For each GitLab project that you want to integrate, we recommend that you create a new Sentry project.
 1. [Find or generate](https://docs.sentry.io/api/auth/) a Sentry auth token for your Sentry project.
    Make sure to give the token at least the following scopes: `event:read` and `project:read`.
 1. Navigate to your project’s **Settings > Operations**.
@@ -40,7 +40,7 @@ GitLab provides an easy way to connect Sentry to your project:
 
 ### Enabling GitLab issues links
 
-You may also want to enable Sentry's GitLab integration by following the steps in the [Sentry documentation](https://docs.sentry.io/workflow/integrations/gitlab/)
+You may also want to enable Sentry's GitLab integration by following the steps in the [Sentry documentation](https://docs.sentry.io/product/integrations/gitlab/)
 
 ## Error Tracking List
 
@@ -59,7 +59,7 @@ From error list, users can navigate to the error details page by clicking the ti
 This page has:
 
 - A link to the Sentry issue.
-- A link to the GitLab commit if the Sentry [release ID/version](https://docs.sentry.io/workflow/releases/?platform=javascript#configure-sdk) on the Sentry Issue's first release matches a commit SHA in your GitLab hosted project.
+- A link to the GitLab commit if the Sentry [release ID/version](https://docs.sentry.io/product/releases/?platform=javascript#configure-sdk) on the Sentry Issue's first release matches a commit SHA in your GitLab hosted project.
 - Other details about the issue, including a full stack trace.
 - In [GitLab 12.7 and newer](https://gitlab.com/gitlab-org/gitlab/-/issues/36246), language and urgency are displayed.
 

doc/user/clusters/applications.md

@@ -1189,7 +1189,7 @@ server:
       }
 ```
 
-Once you have successfully installed Vault, you will need to [initialize the Vault](https://learn.hashicorp.com/vault/getting-started/deploy#initializing-the-vault)
+Once you have successfully installed Vault, you will need to [initialize the Vault](https://learn.hashicorp.com/tutorials/vault/getting-started-deploy#initializing-the-vault)
 and obtain the initial root token. You will need access to your Kubernetes cluster that Vault has been deployed into in order to do this.
 To initialize the Vault, get a shell to one of the Vault pods running inside Kubernetes (typically this is done by using the `kubectl` command line tool).
 Once you have a shell into the pod, run the `vault operator init` command:

doc/user/compliance/license_compliance/index.md

@@ -75,15 +75,15 @@ which means that the reported licenses might be incomplete or inaccurate.
 
 | Language   | Package managers                                                  | Scan Tool                                                |
 |------------|-------------------------------------------------------------------|----------------------------------------------------------|
-| JavaScript | [yarn](https://yarnpkg.com/)|[License Finder](https://github.com/pivotal/LicenseFinder)|
+| JavaScript | [Yarn](https://yarnpkg.com/)|[License Finder](https://github.com/pivotal/LicenseFinder)|
 | Go         | go get, gvt, glide, dep, trash, govendor |[License Finder](https://github.com/pivotal/LicenseFinder)|
-| Erlang     | [rebar](https://www.rebar3.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)|
+| Erlang     | [Rebar](https://www.rebar3.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)|
 | Objective-C, Swift | [CocoaPods](https://cocoapods.org/) v0.39 and below |[License Finder](https://github.com/pivotal/LicenseFinder)|
-| Elixir     | [mix](https://elixir-lang.org/getting-started/mix-otp/introduction-to-mix.html) |[License Finder](https://github.com/pivotal/LicenseFinder)|
-| C++/C      | [conan](https://conan.io/) |[License Finder](https://github.com/pivotal/LicenseFinder)|
+| Elixir     | [Mix](https://elixir-lang.org/getting-started/mix-otp/introduction-to-mix.html) |[License Finder](https://github.com/pivotal/LicenseFinder)|
+| C++/C      | [Conan](https://conan.io/) |[License Finder](https://github.com/pivotal/LicenseFinder)|
 | Scala      | [sbt](https://www.scala-sbt.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)|
-| Rust       | [cargo](https://crates.io) |[License Finder](https://github.com/pivotal/LicenseFinder)|
-| PHP        | [composer](https://getcomposer.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)|
+| Rust       | [Cargo](https://crates.io) |[License Finder](https://github.com/pivotal/LicenseFinder)|
+| PHP        | [Composer](https://getcomposer.org/) |[License Finder](https://github.com/pivotal/LicenseFinder)|
 
 ## Requirements
 
@@ -330,13 +330,13 @@ strict-ssl = false
 
 ### Configuring Yarn projects
 
-You can configure Yarn projects by using a [`.yarnrc.yml`](https://yarnpkg.com/configuration/yarnrc)
+You can configure Yarn projects by using a [`.yarnrc.yml`](https://yarnpkg.com/configuration/yarnrc/)
 file.
 
 #### Using private Yarn registries
 
 If you have a private Yarn registry you can use the
-[`npmRegistryServer`](https://yarnpkg.com/configuration/yarnrc#npmRegistryServer)
+[`npmRegistryServer`](https://yarnpkg.com/configuration/yarnrc/#npmRegistryServer)
 setting to specify its location.
 
 For example:

doc/user/group/saml_sso/index.md

@@ -162,7 +162,7 @@ For more information, see our [discussion on providers](#providers).
 
 Your identity provider may have relevant documentation. It may be generic SAML documentation, or specifically targeted for GitLab. Examples:
 
-- [Auth0](https://auth0.com/docs/protocols/saml/saml-idp-generic)
+- [Auth0](https://auth0.com/docs/protocols/saml-configuration-options/configure-auth0-as-saml-identity-provider)
 - [G Suite](https://support.google.com/a/answer/6087519?hl=en)
 - [JumpCloud](https://support.jumpcloud.com/support/s/article/single-sign-on-sso-with-gitlab-2019-08-21-10-36-47)
 - [PingOne by Ping Identity](https://docs.pingidentity.com/bundle/pingone/page/xsh1564020480660-1.html)

doc/user/instance_statistics/dev_ops_score.md

@@ -7,7 +7,7 @@ NOTE: **Note:**
 Your GitLab instance's [usage ping](../admin_area/settings/usage_statistics.md#usage-ping-core-only) must be activated in order to use this feature.
 
 The DevOps Score gives you an overview of your entire instance's adoption of
-[Concurrent DevOps](https://about.gitlab.com/concurrent-devops/)
+[Concurrent DevOps](https://about.gitlab.com/topics/concurrent-devops/)
 from planning to monitoring.
 
 This displays the usage of these GitLab features over

doc/user/packages/index.md

@@ -18,11 +18,11 @@ The Package Registry supports the following formats:
 <tr style="background:#dfdfdf"><th>Package type</th><th>GitLab version</th></tr>
 <tr><td><a href="https://docs.gitlab.com/ee/user/packages/composer_repository/index.html">Composer</a></td><td>13.2+</td></tr>
 <tr><td><a href="https://docs.gitlab.com/ee/user/packages/conan_repository/index.html">Conan</a></td><td>12.6+</td></tr>
-<tr><td><a href="http://docs.gitlab.com/ee/user/packages/go_proxy/index.html">Go</a></td><td>13.1+</td></tr>
-<tr><td><a href="http://docs.gitlab.com/ee/user/packages/maven_repository/index.html">Maven</a></td><td>11.3+</td></tr>
+<tr><td><a href="https://docs.gitlab.com/ee/user/packages/go_proxy/index.html">Go</a></td><td>13.1+</td></tr>
+<tr><td><a href="https://docs.gitlab.com/ee/user/packages/maven_repository/index.html">Maven</a></td><td>11.3+</td></tr>
 <tr><td><a href="https://docs.gitlab.com/ee/user/packages/npm_registry/index.html">NPM</a></td><td>11.7+</td></tr>
-<tr><td><a href="http://docs.gitlab.com/ee/user/packages/nuget_repository/index.html">NuGet</a></td><td>12.8+</td></tr>
-<tr><td><a href="http://docs.gitlab.com/ee/user/packages/pypi_repository/index.html">PyPI</a></td><td>12.10+</td></tr>
+<tr><td><a href="https://docs.gitlab.com/ee/user/packages/nuget_repository/index.html">NuGet</a></td><td>12.8+</td></tr>
+<tr><td><a href="https://docs.gitlab.com/ee/user/packages/pypi_repository/index.html">PyPI</a></td><td>12.10+</td></tr>
 </table>
 </div>
 </div>

doc/user/project/pages/custom_domains_ssl_tls_certification/ssl_tls_concepts.md

@@ -56,7 +56,7 @@ reiterating the importance of HTTPS.
 
 ## Issuing Certificates
 
-GitLab Pages accepts certificates provided in the [PEM](https://support.quovadisglobal.com/kb/a37/what-is-pem-format.aspx) format, issued by
+GitLab Pages accepts certificates provided in the [PEM](https://knowledge.digicert.com/quovadis) format, issued by
 [Certificate Authorities](https://en.wikipedia.org/wiki/Certificate_authority) or as
 [self-signed certificates](https://en.wikipedia.org/wiki/Self-signed_certificate). Note that [self-signed certificates are typically not used](https://www.mcafee.com/blogs/other-blogs/mcafee-labs/self-signed-certificates-secure-so-why-ban/)
 for public websites for security reasons and to ensure that browsers trust your site's certificate.