Gitlab-CE default installation goes with HTTPS disable. We need to generate a SSL certificate, and bind it to the HTTPS of Gitlab-CE.
Apr 07, 2018 To copy and paste the content idrsa.pub to the Profile Settings in Gitlab server web interface Conclusion Thought the article, To help you use ssh key pair for the project. Mar 04, 2014 We heard a few people saying that using a SSH key is hard. In this screencast we show you that adding a SSH key to GitLab is very simple, allowing everyone to push and pull to GitLab without having to enter their username and password every time.
Online docs for SSL certificate without SAN
Generate SSL certificate private key
Generate SSL certificate request
Without the switch
-config
, the generation of csr request will ask you some information about company, email, and passphrasem etc. If you dont want OpenSSL to ask you that, you need to prepare a config file and specify it by -config [YourConfigPath]
, and config example can be found in the paragraph Prepare the OpenSSL config file.Generate SSL certificate
OpenSSL has the option to generate the certificate in one line, this post splits it into 3 steps (the private key, the request file, and the certificate) in order to get a clear understanding of the certificate generation procedure.
Review the SSL certificate content
DO NOT use password protected certificate key (in case the lack of the switch -nodes for no DES), to remove the password from the key:
openssl rsa -in certificate_before.key -out certificate_after.key
Generate Ssh Keys For Gitlab
Online docs for SSL certificate with SAN
I tested many methods found on the Internet, most of them don’t work. Finally, I followed the doc maintained by Citrix. This should be a trusted one as Netscaler is a key product in Citrix, the doc is always updated with the latest version of OpenSSL.With time going by, the procedure might change, if below procedure doesn’t work, please go to check the Citrix online doc directly.
Prepare the OpenSSL config file
Prepare an OpenSSL config file. On Ubuntu 1804, an OpenSSL config example can be found at:
/usr/lib/ssl/openssl.cnf
.Or You can find the path from the command: openssl version -a | grep OPENSSLDIR
. You might need to change the config according to your actual environment.Be careful with the usage of the
wildcard
in [alt_names], the above OpenSSL config is just an example to show what are the DNS names can be added to SAN.Generate the SAN SSL certificate content
Pay attention to
-extensions v3_req
in the end of the command, it’s the extension tag name in the gitlab.copdips.local.cnf
file. If you dont specify it, the output certificate won’t have the extension part, so no SAN neither.DO NOT use password protected certificate key (in case the lack of the switch -nodes for no DES), to remove the password from the key:
openssl rsa -in certificate_before.key -out certificate_after.key
Review the SAN SSL certificate
The
default Signature Algorithm
has been already SHA256
. Some online docs tell to add the switch -sha256 when using openssl req, but it’s deprecated with the new version of OpenSSL. BTW, the RSA private key default bits
is 2048
. My OpenSSL version on Ubuntu 1804 is OpenSSL 1.1.0g 2 Nov 2017
Create the folder
/etc/gitlab/ssl
with following two commands, and copy the SSL certificate and key here with the name of [fqdn].crt
and [fqnd].key
./srv/gitlab1083/ssl/
is the physical gitlab location on my Ubuntu server which is pointed to /etc/gitlab/ssl
its docker container.Heroes of might and magic 2 product key generator. A remastered edition of i of the most well-received installments of the fabled Heroes of Might & s series, created for the 15th anniversary of the game's original relinquish and the twentieth anniversary of the franchise.
Hereunder the content of uncommented lines in the Gitlab configuration file:
When you changed the configuration file, to take effect:
By openssl for both Linux and Windows
For Linux :
For Windows with OpenSSL installed:
My OpenSSL is installed with GIT on Windows. GitForWindows installs also many other powerful Linux commands (grep, ssh, tail, and also vim, etc.) ported to Windows.
Jul 20, 2017 Write program in C or Java to implement RSA algorithm for key generation and cipher verification Huzaif Sayyed July 20, 2017 BE INFO CYBER SECURITY AND MACHINE LEARNING PROGRAMS RSA is algorithm used by modern computers to encrypt and decrypt messages. It is an asymmetric cryptographic algorithm. Rsa algorithm for key generation and cipher verification in java download. Dec 29, 2016 As said RSA is a public key cryptography 'asymmetric' algorithm. This differs from the 'shared secret' 'symmetric' algorithms like DES or AES in that there are two keys. A public key that you share with anyone and a private key you keep secret. The public key can be used to encrypt data which can then only be decrypted using the private key.
By certuil for Windows only
You should explicitly download the certificate at first, and then view the content locally, so this method is not cool.Hope Powershell team can get this done by one single cmdlet in the future Powershell releases.
Or a nice cmdlet
Test-WebServerSSL
written by the MVP Vadims Podāns.Here is the official doc.
When you changed the SSL certificate,
gitlab-ctl reconfigure
won’t take it into effect as there’s nothing changed in the gitlab.rb configuration file. Use following command to update the certificate: