How to setup GitLab on an Amazon EC2 Instance Before you pound yourself with the table, curse everything around you, and jump off a bridge… stop! Please, bear with me. This is going to be a very long post, and I hope this saves you countless hours on how to do it. This is not a holy path that you need to follow, this was how I got it working. Yes, you may experience problems during installation, since there’s no 2 equal systems. computing What you’re going to get from this tutorial: Having a functioning instance on an AWS EC2 instance. GitLab Use GitLab CI for your projects, and how to configure it. Posts: [Tutorial — Guide] Installing GitLab, GitLab CI on AWS EC2 from Zero. (This Guide) Configure GitLab CI on AWS EC2 Using Docker Configuring .gitlab-ci.yml Troubleshooting GitLab and GitLab CI #1 — Installation GitLab is , at least its community edition. unless you are open sourcing and plan to use it directly in . We’ll be using GitLab CE (Community Edition). free But hosting it is not, GitLab’s website Note, you can opt to manually install GitLab instead of configuring through AWS. If so, follow these steps from GitLab’s website . If you’re doing this, skip to #2. I’m going to assume that you already have created an AWS account. The first thing you want to do, is to head to . Amazon’s Marketplace, and get the GitLab Community Edition You’re going to hit “Continue to Subscribe” One thing: I’m not covering here how to generate the key pair or the .ppk file. You can follow this excellent tutorial from bluehost . Couple of things to notice: The version of GitLab that it’s going to install, it’s outdated. The predefined EC2 Instance Type is a t2.medium. The potential cost of running the instance is around $33.41 /month. I recommend on than the t2.medium, even if you’re a single developer. GitLab will perform correctly, and it will complain if it doesn’t have You implement what it’s called a , but from personal experience not using something smaller not 4 GB of RAM (Believe me, it’s going to use it). can Memory Swap if you select a t2.micro do not do it. It’s going to run like garbage. For keeping costs down, I recommend stopping the GitLab instance when not in use (If you’re a super small development team). Scroll down the page, and you’ll see the Security Group This is important, and out of the scope of this tutorial. I always recommend to set the IP accordingly to what you need. In the beginning, you can just “Create new based on seller settings”, and then adjust. Click “Continue to Subscribe”, and you’ll see the confirmation page below: Click on EC2 Console, and it’s going to send you to the main page from your EC2 instances. If you decided to go with setting up the security group, then, scroll all the way to the right until you see “Security Groups”, and select the one from the instance. Example of the Security Groups. Click the one corresponding to your GitLab isntance. What you want to do is “Edit inbound rules” and then assign for the SSH your own IP. For HTTP, you can apply the same restrictions for improved security, or leave it open and access it from anywhere. #2 — Assigning an Elastic IP. The reason why this is getting a section of its own, and it may feel out of place (This shows illustrations of an already setup GitLab instance) is because I messed up big with this one, and I had to dig into GitLab to fix it. You see, when you’re connecting via the IPV4, each time you stop and resume the instance, the (On AWS) IP Address changes This may seem inoffensive at first, but there’s a . GitLab into the project. major problem hardcodes the current URL Screen when you’re creating a project Pay attention to the Project Path. It becomes hardcoded. If you stop and bring back up the instance, there a mismatch of the URL and the repo, and this is cause issues. will be going to This brings the problem that when you try to push or pull from the repo, it’s going to come up with errors such as Not Found, or Permission Denied. Setting up an Elastic IP , will save you from some demise. Not everything is lost, if you do screw up, there’s a method for you to fix it. before you do anything Go to “Services” in the top, and click “EC2” to bring you to the main EC2 page. Click on “Elastic IPs”. Then on “Allocate new address” Press “Allocate”, and you’ll receive a confirmation message: With the new IP Address selected, click “Actions”, and then “Associate address”. Then, select the GitLab instance and assign the private IP. That’s it! That’s going to save you a lot of headaches! #3— Connecting to the GitLab instance For this, you’re going to need or a similar program that can give you shell access (sh access). PuTTy I’m going to assume you’re going to be using PuTTy in this tutorial. From the aws page you just opened (The EC2 Instances page), you’re going to click on the newly created Instance (It shall appear blank. It’s the second on the picture above), and you’re going to look for the IPv4 address. Click open Click “Yes” Where it says “login as:”, type “ubuntu”, and if you have a passphrase for your key (You should have one), type the password or copy paste it. . Note: It’s not going to show up in the terminal #4- Updating Ubuntu The current installation of Ubuntu is out of date, and it needs to be updated. First, create a backup image (In case the Server isn’t new) Then, from : here sudo apt update sudo apt dist-upgrade sudo do-release-upgrade -d Note: This is going to take a while. If that doesn’t work (You don’t see anything happening), try with this: (Note that we omit the -d flag) sudo do-release-upgrade Pay attention to the upgrade process as it it’s going to ask you to confirm a series of installations and upgrades. You could probably omit it with the “-y” flag. Such screens look like these: Select “Yes” Type “Y” and press Enter. “Install the package maintainer’s version”, and hit enter Type “y” and press “Enter” This last Window will restart the server and will disconnect it from the console. You will have to close and open PuTTY again. Check that the most recent version was installed by running: lsb_release -a As of this writing, the latest version is 16.0.4.4: #5-Configuring GitLab for the first time Once you have upgraded Ubuntu, then you need to configure GitLab: sudo gitlab-ctl reconfigure This process is going to take a while. Once it has finished, you will see “gitlab Reconfigured!” Update and upgrade the packages: sudo apt-get update sudo apt-get upgrade After that, just to be sure, restart the gitlab-ctl: sudo gitlab-ctl restart Now, access the project at the IPv4 address from your AWS (The same URL you used for PuTTY). Navigate with your browser to the same IPv4 URL Address E.g: Navigate to: http://ec2–20–156–206–47.us-east-2.compute.amazonaws.com/ Access the default account with (If it asks you): Username: root Password: 5iveL!fe In this case, it didn’t ask us for the default credentials, but immediately prompted us with changing the password. This is going to be the default page Once the main page has been loaded, navigate to the admin area, by adding “/admin” at the end of the URL. Do it like this: (First your IP Address, then /admin) http://ec2–20–156–206–47.us-east-2.compute.amazonaws.com/admin You may have noticed the following: GitLab needs update. That’s what we’re going to do next! #6 — Updating GitLab Let’s get back to PuTTY, and run some commands: sudo apt-get update && sudo apt-get install gitlab-ce This will check that we have everything up to date. Then, we need to manually look for GitLab on : the following URL _APT/YUM repository for GitLab Community Edition packages_packages.gitlab.com gitlab/gitlab-ce - Packages · packages.gitlab.com And you’re going to look for the latest version, which as of this time is: 10.6.4. Note, you need to match it to the version of Linux used. In our case, it was the Ubuntu Xenial release. A way for you to know about it on Ubuntu machines is to run: lsb_release -a Running lsb_release -a will give us the Ubuntu version. Identify your distribution. In our case w’ere using Ubuntu Xenial Release. We click and follow the link. We’ll see that GitLab provides us with some instructions on how to install it: We do exactly as it says; We go to PuTTY and execute: curl -s | sudo bash https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh sudo apt-get install gitlab-ce=10.6.4-ce.0 The | means that you get the standard output of the curl to bash. Let the beauty unfold! See how it installs! You shall be greeted with this awesome message! Navigate to your new instance place! #7 — The War is not over. — Connecting to GitLab Whenever you connect to GitHub, it automatically creates what we call an SSH key (Secure Shell Key). It’s a mean for communicating directly with your repo without the need of a password. GitLab is no different, except that we need to ourselves, and then paste them into our GitLab account. Failing to do so, we be able to pull/push or do anything in the repo. manually generate it won’t For this we’re going to need Bash, which we can use from Git. If you don’t have it, download and install it. Open Bash: Git What we’re going to do is that we’re going to use Git Bash to generate the SSH keys for us, and we’re going to copy and paste it into GitLab. In the Bash command, run: ssh-keygen -t rsa -C “your_name@your_email.com” Then, it’s going to ask you the file in which you want to save it. You can just press enter. If you have or want to create multiple RSA keys, then you’ll need to specify a different name. Note, unfortunately you’ll need to append the whole path to the new name, so it stores it into that location. Otherwise, it’s going to store it outside the .ssh folder (Not a big deal, just remember to move it into .ssh) In English, what I mean is: In the textbox, if you want to name it id_rsa_gitlab, you’ll put it like this: /c/Users/asili/.ssh/id_rsa_gitlab Then, it’s going to ask you for some passphrase in case you want to protect it. After it finishes, it should show something like the image above. Add the file(s) to SSH: ssh-add ~/.ssh/id_rsassh-add ~/.ssh/id_rsa_any_other_file_I_could_have_created Once it’s done, you’re going to need to copy the contents of the id_rsa_gitlab.pub or id_rsa_.pub (The filename you specified), and paste them into GitLab. You can either: Type this in the GitBash command: $ cat ~/.ssh/id_rsa.pub | clip And this will copy the contents into your clipboard. Or: Locate the file, and open it with a text editor. . Sorry Publisher, but you won’t be able to open it Now, go to your GitLab instance (via the browser), click on the icon at the top right, and select “Settings”: Go to “SSH keys” at the left, and then paste the contents of the key into the textbox. Each user will have to do this exact process of generating an SSH key and pasting it in their own profiles. Note: You are going to do this for each machine that you connect to. Click “Add Key”, and you’ll get something like this: With this, you’ll be able to pull and push from the repo (As long as you have ). permissions inside GitLab You can safely skip to the next section if you are only going to use a single _rsa key. If you’re using multiple of them, you need to add an extra step of configuration. In case that you have multiple RSA keys (SSH Keys), you’ll have to create a config file: Go back to the .ssh directory (In my case was: C:\Users\asili\.ssh), and create an empty and config file. extensionless You can either: Do it via Git Bash: touch ~/.ssh/config Or right click, New => Text Document, and remove the “.txt” extension. Open the file with any text editor. Inside it, copy and paste the following content: # Root accountHost ec2–12–211–32–14.us-east-2.compute.amazonaws.comHostName ec2–12–211–32–14.us-east-2.compute.amazonaws.comPreferredAuthentications publickeyIdentityFile ~/.ssh/id_rsa # superjose accountHost ec2–18–211–14–41.us-east-2.compute.amazonaws.comHostName ec2–18–211–14–41.us-east-2.compute.amazonaws.comPreferredAuthentications publickeyIdentityFile ~/.ssh/id_rsa_superjose Host other_gitlab_repo.comHostname other_gitlab_repo.comPreferredAuthentications publickeyIdentityFile ~/.ssh/id_rsa_rat In there, you are going to replace the Host and Hostname values for your IPv4 addresses that you are using. This config file . Without this, you won’t be able to communicate to multiple hosts, as it will only use the id_rsa file only. is paramount Note: You’re placing the private key (the extensionless file), not the .pub one. Some additional resources: https://coderwall.com/p/7smjkq/multiple-ssh-keys-for-different-accounts-on-github-or-gitlab https://docs.gitlab.com/ce/ssh/README.html Configuring your existing Repo for GitLab In case you are migrating from other repository to GitLab, you want to configure the . You can do this by: URL endpoints to point to the correct location git remote set-url origin Or, just edit the config file: .git/config What if the repo URL is different from your actual URL? If the repo is different (Your IP Address changed, or you added a domain after you set GitLab up), then go to the following link, step #1: https://hackernoon.com/troubleshooting-gitlab-and-gitlab-ci-79d3b71ad79f#374e FINALLY! GitLab is up and Running But…. What about CI? 💀💀💀💀💀💀💀💀💀💀💀💀💀💀💀 Yes, I know, you want to die. Just think about how much time people had to spend for research to make this work. Or think about how much the GitLab team had to put through all this work to make this happen?! (Kudos for them for this amazing tool 😉) Let’s continue with CI in the other post: Configure GitLab CI on AWS EC2 Using Docker Changelog: May 24th, 2018: Added “What if the repo URL is different from your actual URL?” Fixed a typo in the story. Added a clarification to navigate to the URL when GitLab has finished configuring itself.

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