Update links to external sites

doc/administration/high_availability/redis.md

@@ -15,7 +15,7 @@ Omnibus GitLab packages.
 
 > **Notes:**
 > - Redis requires authentication for High Availability. See
->  [Redis Security](http://redis.io/topics/security) documentation for more
+>  [Redis Security](https://redis.io/topics/security) documentation for more
 >  information. We recommend using a combination of a Redis password and tight
 >  firewall rules to secure your Redis service.
 > - You are highly encouraged to read the [Redis Sentinel][sentinel] documentation
@@ -82,7 +82,7 @@ When a **Master** fails to respond, it's the application's responsibility
 for a new **Master**).
 
 To get a better understanding on how to correctly set up Sentinel, please read
-the [Redis Sentinel documentation](http://redis.io/topics/sentinel) first, as
+the [Redis Sentinel documentation](https://redis.io/topics/sentinel) first, as
 failing to configure it correctly can lead to data loss or can bring your
 whole cluster down, invalidating the failover effort.
 
@@ -885,8 +885,8 @@ Read more on High Availability:
 [reconfigure]: ../restart_gitlab.md#omnibus-gitlab-reconfigure
 [gh-531]: https://github.com/redis/redis-rb/issues/531
 [gh-534]: https://github.com/redis/redis-rb/issues/534
-[redis]: http://redis.io/
-[sentinel]: http://redis.io/topics/sentinel
+[redis]: https://redis.io/
+[sentinel]: https://redis.io/topics/sentinel
 [omnifile]: https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/files/gitlab-cookbooks/gitlab/libraries/gitlab_rails.rb
 [source]: ../../install/installation.md
 [ce]: https://about.gitlab.com/downloads

doc/administration/high_availability/redis_source.md

@@ -107,7 +107,7 @@ starting with `sentinel` prefix.
 Assuming that the Redis Sentinel is installed on the same instance as Redis
 master with IP `10.0.0.1` (some settings might overlap with the master):
 
-1. [Install Redis Sentinel](http://redis.io/topics/sentinel)
+1. [Install Redis Sentinel](https://redis.io/topics/sentinel)
 1. Edit `/etc/redis/sentinel.conf`:
 
     ```conf
@@ -363,7 +363,7 @@ production:
       port: 26379 # point to sentinel, not to redis port
 ```
 
-When in doubt, please read [Redis Sentinel documentation](http://redis.io/topics/sentinel).
+When in doubt, please read [Redis Sentinel documentation](https://redis.io/topics/sentinel).
 
 [gh-531]: https://github.com/redis/redis-rb/issues/531
 [downloads]: https://about.gitlab.com/downloads

doc/ci/examples/test_phoenix_app_with_gitlab_ci_cd/index.md

@@ -398,10 +398,10 @@ other reasons][ci-reasons] to keep using GitLab CI/CD. The benefits to our teams
 - [Using Docker images documentation][using-docker]
 - [Example project: Hello GitLab CI/CD on GitLab][hello-gitlab]
 
-[phoenix-site]: http://phoenixframework.org/ "Phoenix Framework"
+[phoenix-site]: https://phoenixframework.org/ "Phoenix Framework"
 [phoenix-learning-guide]: https://hexdocs.pm/phoenix/learning.html "Phoenix Learning Guide"
-[phoenix-install]: http://www.phoenixframework.org/docs/installation "Phoenix Installation"
-[phoenix-mysql]: http://www.phoenixframework.org/docs/using-mysql "Phoenix with MySQL"
+[phoenix-install]: https://hexdocs.pm/phoenix/installation.html "Phoenix Installation"
+[phoenix-mysql]: https://hexdocs.pm/phoenix/ecto.html#using-mysql "Phoenix with MySQL"
 [elixir-site]: http://elixir-lang.org/ "Elixir"
 [elixir-mix]: http://elixir-lang.org/getting-started/mix-otp/introduction-to-mix.html "Introduction to mix"
 [elixir-docs]: http://elixir-lang.org/getting-started/introduction.html "Elixir Documentation"

doc/topics/authentication/index.md

@@ -43,7 +43,7 @@ This page gathers all the resources for the topic **Authentication** within GitL
 ## Third-party resources
 
 - [Kanboard Plugin GitLab Authentication](https://github.com/kanboard/plugin-gitlab-auth)
-- [Jenkins GitLab OAuth Plugin](https://wiki.jenkins-ci.org/display/JENKINS/GitLab+OAuth+Plugin)
+- [Jenkins GitLab OAuth Plugin](https://wiki.jenkins.io/display/JENKINS/GitLab+OAuth+Plugin)
 - [Set up Gitlab CE with Active Directory authentication](https://www.caseylabs.com/setup-gitlab-ce-with-active-directory-authentication/)
 - [How to customize GitLab to support OpenID authentication](http://eric.van-der-vlist.com/blog/2013/11/23/how-to-customize-gitlab-to-support-openid-authentication/)
 - [Openshift - Configuring Authentication and User Agent](https://docs.openshift.org/latest/install_config/configuring_authentication.html#GitLab)

doc/university/README.md

@@ -205,7 +205,7 @@ The curriculum is composed of GitLab videos, screencasts, presentations, project
 
 ### 4. External Articles
 
-1. [2011 WSJ article by Marc Andreessen - Software is Eating the World](http://www.wsj.com/articles/SB10001424053111903480904576512250915629460)
+1. [2011 WSJ article by Marc Andreessen - Software is Eating the World](https://www.wsj.com/articles/SB10001424053111903480904576512250915629460)
 1. [2014 Blog post by Chris Dixon - Software eats software development](http://cdixon.org/2014/04/13/software-eats-software-development/)
 1. [2015 Venture Beat article - Actually, Open Source is Eating the World](http://venturebeat.com/2015/12/06/its-actually-open-source-software-thats-eating-the-world/)
 

doc/university/glossary/README.md

@@ -303,7 +303,7 @@ A [tool](https://docs.gitlab.com/ee/integration/external-issue-tracker.html) use
 
 ### Jenkins
 
-An Open Source CI tool written using the Java programming language. [Jenkins](https://jenkins-ci.org/) does the same job as GitLab CI, Bamboo, and Travis CI. It is extremely popular. Related [documentation](https://docs.gitlab.com/ee/integration/jenkins.html). 
+An Open Source CI tool written using the Java programming language. [Jenkins](https://jenkins.io/) does the same job as GitLab CI, Bamboo, and Travis CI. It is extremely popular. Related [documentation](https://docs.gitlab.com/ee/integration/jenkins.html). 
 
 ### Jira
 

doc/user/project/pages/getting_started_part_three.md

@@ -212,7 +212,7 @@ security measure, necessary just for big companies, like banks and shoppings sit
 with financial transactions.
 Now we have a different picture. [According to Josh Aas](https://letsencrypt.org/2015/10/29/phishing-and-malware.html), Executive Director at [ISRG](https://en.wikipedia.org/wiki/Internet_Security_Research_Group):
 
-> _We’ve since come to realize that HTTPS is important for almost all websites. It’s important for any website that allows people to log in with a password, any website that [tracks its users](https://www.washingtonpost.com/news/the-switch/wp/2013/12/10/nsa-uses-google-cookies-to-pinpoint-targets-for-hacking/) in any way, any website that [doesn’t want its content altered](http://arstechnica.com/tech-policy/2014/09/why-comcasts-javascript-ad-injections-threaten-security-net-neutrality/), and for any site that offers content people might not want others to know they are consuming. We’ve also learned that any site not secured by HTTPS [can be used to attack other sites](http://krebsonsecurity.com/2015/04/dont-be-fodder-for-chinas-great-cannon/)._
+> _We’ve since come to realize that HTTPS is important for almost all websites. It’s important for any website that allows people to log in with a password, any website that [tracks its users](https://www.washingtonpost.com/news/the-switch/wp/2013/12/10/nsa-uses-google-cookies-to-pinpoint-targets-for-hacking/) in any way, any website that [doesn’t want its content altered](http://arstechnica.com/tech-policy/2014/09/why-comcasts-javascript-ad-injections-threaten-security-net-neutrality/), and for any site that offers content people might not want others to know they are consuming. We’ve also learned that any site not secured by HTTPS [can be used to attack other sites](https://krebsonsecurity.com/2015/04/dont-be-fodder-for-chinas-great-cannon/)._
 
 Therefore, the reason why certificates are so important is that they encrypt
 the connection between the **client** (you, me, your visitors)