Running CI/CD Pipeline with GitLab CI

GitLab allows us to deploy CI/CD pipeline runners on our own resources within our environment. This option is available not only for the self-hosted plan but also for the cloud service plan (gitlab.com). With this setup, unlike GitHub Action, we can avoid incurring additional costs for extended pipeline runtime. This is because we can deploy the runner on an on-demand server and optimize its usage.

GitLab CI offers several options for setting up resources to run CI/CD pipelines. A runner can be configured to handle jobs for specific groups or projects using designated tags. It can also be set to use different executors, such as Shell, Docker, Kubernetes, or VirtualBox. A comparison table of the supported executors is available in the executor documentation. Some executors offer greater flexibility and ease of use, while others may be more rigid but enhance server security.

Installing the runner in our machine

For example, we will deploy the runner on an Ubuntu server. It is recommended to use a separate machine from the one hosting the GitLab server. Detailed instructions can be found in the runner documentation.

curl -L "https://packages.gitlab.com/install/repositories/runner/gitlab-runner/script.deb.sh" | sudo bash
sudo apt-get install gitlab-runner

Additionally, we have to install Docker because we will use it as the executor in this process.

Registering the runner on our GitLab

We will configure the runner to handle jobs only from a specific group using designated tags. In this example, I use the latest registration mechanism available in GitLab Runner 15.10 or later.

Visit the control panel of the desired group and choose the Build > Runners menu.
Choose the "New group runner" option.
Fill in the required fields including the tags field.
Copy the command generated after submitting the form that contains the registration token.

Linking the runner with the GitLab CI instance

Next, return to the machine where the runner is installed and run the command generated in the previous step. The command will look like the example below.

gitlab-runner register --url https://YOUR_GITLAB_HOST --token glrt-xxx

When running the command, you will be prompted to answer a few questions. For the executor, you can type "docker", and for the default image, you can select "ubuntu:22.04". Detailed instructions for registering the runner are available in the runner configuration documentation.

Configuring the runner

Before the runner can function properly, we need to update certain values in the configuration file located at "/etc/gitlab-runner/config.toml". First, generate a Personal Access Token or a group-level token to allow the runner to pull the contents of the repository in the group. Then, input the token value into the configuration as shown in the example below.

[[runners]]
  name = "something"
  # ...
  executor = "docker"
  clone_url = "https://gitlab-ci-token:YOUR_PAT_OR_GROUP_TOKEN@YOUR_GITLAB_HOST"
  # ...
  [runners.docker]
    image = "ubuntu:22.04"
    pull_policy = "if-not-present"

Lastly, we must restart the runner with this command: gitlab-runner restart.

Configuring the CI/CD pipeline in our project

In GitLab CI, the pipeline script is stored in the ".gitlab-ci.yml" file within the project repository. Since the runner is configured to handle jobs with specific tags, each job in the pipeline script must be assigned the appropriate tag, as shown in the example below.

stages:
  - build
  - deploy

build-job:
  tags:
    - YOUR_TAG
  stage: build
  script:
    - echo "Compile complete."

deploy-job:
  tags:
    - YOUR_TAG
  stage: deploy
  script:
    - echo "Application successfully deployed."

After we push the update, we can check the status on the "Build > Pipelines" menu in our project repository.

Comments

Upgrading PHP 5 to PHP 7 in Ubuntu

PHP 7 comes with a new version of the Zend Engine, numerous improvements and new features such as: Improved performance: PHP 7 is up to twice as fast as PHP 5.6 Significantly reduced memory usage Abstract Syntax Tree Consistent 64-bit support Improved Exception hierarchy Many fatal errors converted to Exceptions Secure random number generator Removed old and unsupported SAPIs and extensions The null coalescing operator Return and Scalar Type Declarations Anonymous Classes Zero cost asserts Today (12 April 2016), latest Ubuntu release doesn't include PHP 7. You can install PHP 7 from third-party repository such as PPA. PPAs are not bound by the release schedules or policies of Ubuntu so they are free to change versions more frequently, among other things. Ondrey PPA is a popular way of staying more up to date with PHP. Ondrey is the official owner of the PHP tree in Debian, which is upstream from Ubuntu. To install PHP 7 in Ubuntu you can do the following: 1.

Rangkaian Sensor Infrared dengan Photo Dioda

Keunggulan photodioda dibandingkan LDR adalah photodioda lebih tidak rentan terhadap noise karena hanya menerima sinar infrared, sedangkan LDR menerima seluruh cahaya yang ada termasuk infrared. Rangkaian yang akan kita gunakan adalah seperti gambar di bawah ini. Pada saat intensitas Infrared yang diterima Photodiode besar maka tahanan Photodiode menjadi kecil, sedangkan jika intensitas Infrared yang diterima Photodiode kecil maka tahanan yang dimiliki photodiode besar. Jika tahanan photodiode kecil maka tegangan V- akan kecil . Misal tahanan photodiode mengecil menjadi 10kOhm. Maka dengan teorema pembagi tegangan: V- = Rrx/(Rrx + R2) x Vcc V- = 10 / (10+10) x Vcc V- = (1/2) x 5 Volt V- = 2.5 Volt Sedangkan jika tahanan photodiode besar maka tegangan V- akan besar (mendekati nilai Vcc). Misal tahanan photodiode menjadi 150kOhm. Maka dengan teorema pembagi tegangan: V- = Rrx/(Rrx + R2) x Vcc V- = 150 / (150+10) x Vcc V- = (150/160) x 5

Configuring Swap Memory on Ubuntu Using Ansible

If we maintain a Linux machine with a low memory capacity while we are required to run an application with high memory consumption, enabling swap memory is an option. Ansible can be utilized as a helper tool to automate the creation of swap memory. A swap file can be allocated in the available storage of the machine. The swap file then can be assigned as a swap memory. Firstly, we should prepare the inventory file. The following snippet is an example, you must provide your own configuration. [server] 192.168.1.2 [server:vars] ansible_user=root ansible_ssh_private_key_file=~/.ssh/id_rsa Secondly, we need to prepare the task file that contains not only the tasks but also some variables and connection information. For instance, we set /swapfile as the name of our swap file. We also set the swap memory size to 2GB and the swappiness level to 60. - hosts: server become: true vars: swap_vars: size: 2G swappiness: 60 For simplicity, we only check the exi

Installing VSCode Server Manually on Ubuntu

I've ever gotten stuck on updating the VSCode server on my remote server because of an unstable connection between my remote server and visualstudio.com that host the updated server source codes. The download and update process failed over and over so I couldn't remotely access my remote files through VSCode. The solution is by downloading the server source codes through a host with a stable connection which in my case I downloaded from a cloud VPS server. Then I transfer the downloaded source codes as a compressed file to my remote server through SCP. Once the file had been on my remote sever, I extracted them and align the configuration. The more detailed steps are as follows. First, we should get the commit ID of our current VSCode application by clicking on the About option on the Help menu. The commit ID is a hexadecimal number like 92da9481c0904c6adfe372c12da3b7748d74bdcb . Then we can download the compressed server source codes as a single file from the host.

Resize VirtualBox LVM Storage

VirtualBox is a free solution to host virtual machines on your computer. It provides configuration options for many components on our machine such as memory, storage, networking, etc. It also allows us to resize our machine storage after its operating system is installed. LVM is a volume manager in a Linux platform that helps us to allocate partitions in the system and configure the storage size that will be utilized for a specific volume group. There are some points to be noticed when we work with LVM on VirtualBox to resize our storage. These are some steps that need to be performed. 1. Stop your machine before resizing the storage. 2. Set new storage size using GUI by selecting " File > Virtual Media Manager > Properties " then find the desired virtual hard disk name that will be resized. OR , by running a CLI program located in " Program Files\Oracle\VirtualBox\VBoxManage.exe ". cd "/c/Program Files/Oracle/VirtualBox" ./VBoxManage.exe list

Beautiful Rain (JDorama)

Saya selalu tertarik dengan film-film inspirasional, baik movie atau pun serial drama. Akhir-akhir ini saya tertarik untuk menonton drama serial jepang. Saya googling dengan keyword "inspirational japan dorama" kemudian saya dapati sejumlah review beberapa film bagus dari sejumlah netizen. Salah satu yang kemudian saya tonton adalah Beautiful Rain . Setiap episode film ini selalu membuat saya sangat terharu sampai meneteskan air mata. :' Yah, ini mungkin saja karena saya yang terlalu melankolis. Hahaha. Ini sedikit review dari saya tentang film ini.

LUKI NOTES

Search This Blog