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chore: Added new article about pacoloco
Pacoloco is a caching proxy server designed specifically for Pacman. It runs as a web server that acts like an Arch Linux Mirrors
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---
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title: "Pacoloco: Caching Proxy Server Untuk Arch Linux Mirror"
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description: Pacoloco adalah server proxy caching yang dirancang khusus untuk Pacman. Dia berjalan sebagai web server yang meniru atau bertingkah seperti Arch Linux Mirror, dan memungkinkannya Anda untuk menyimpan dan menyajikan paket kepada pengguna lainnya.
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summary: Percepat full sistem upgrade Arch Linux Anda menggunakan Pacoloco, server proxy caching yang dirancang khusus untuk Pacman.
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date: 2025-04-05T17:45:00+07:00
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lastmod:
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draft: false
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noindex: false
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nav_weight: 1000
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categories:
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- SysAdmin
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- TIL
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tags:
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- Arch Linux
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- Open Source
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images:
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authors:
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- ditatompel
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---
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Jika Anda menggunakan beberapa mesin Arch Linux di jaringan lokal, Anda mungkin
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tertarik mempelajari tentang **Pacoloco**. [Pacoloco][pacoloco-repo] adalah
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server _proxy caching_ yang dirancang khusus untuk **Pacman**, sebuah _package
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manager_ untuk Arch Linux. Pacoloco berjalan sebagai web server yang bertindak
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seperti Arch Linux Mirror, yang memungkinkannya untuk menyimpan dan menyajikan
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paket kepada pengguna lain.
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Setiap kali server Pacoloco menerima permintaan dari pengguna, ia mengunduh
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berkas yang diminta dari mirror Arch Linux asli lalu memberikannya ke pengguna,
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sambil menyimpan salinan paket yang diunduh di penyimpanan lokal.
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{{< youtube meVHOzgke10 >}}
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## Studi Kasus: Menerapkan Pacoloco di Jaringan Lokal Saya
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Saya memiliki beberapa mesin Arch Linux di jaringan lokal saya, termasuk satu
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mesin virtual di **Proxmox** dan satu lagi KVM di laptop saya. Saya juga
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memiliki laptop tua: [ThinkPad T420](https://tokopedia.link/z7b3wfiGjSb), yang
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juga menjalankan Arch Linux. Untuk mengoptimalkan penggunaan bandwidth, saya
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memutuskan untuk menjalankan Pacoloco server di ThinkPad T420 ini.
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### Persyaratan Sistem
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Pacoloco _service_ tidak memerlukan banyak _processing power_, jadi
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_single-core_ CPU dengan 1 GB RAM seharusnya cukup untuk sebagian besar
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pengguna. Namun, menggunakan port Ethernet yang cepat dan SSD untuk penyimpanan
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cache-nya akan memberikan manfaat yang lebih baik. Disini, ThinkPad T420
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memiliki Gigabit port ethernet, yang memungkinkan kecepatan transfer rata-rata
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sekitar 110 MiB/s.
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Karena Pacoloco tidak mendownload seluruh repositori Arch dan hanya mengunduh
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file yang dibutuhkan oleh pengguna lokal, ukuran cache lokal tidak memakan
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penyimpanan yang besar. Dalam kasus saya, cache lokal saya hanya sekitar 6 GB.
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Hal ini dikarenakan Pacoloco _service_ secara otomatis menghapus _package_
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yang tidak diunduh atau diminta selama jangka waktu tertentu.
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### Menginstal dan Mengonfigurasi Pacoloco
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Untuk menginstal Pacoloco, jalankan `sudo pacman -S pacoloco` dari terminal
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Anda. Kemudian, menyesuaikan konfigurasi `/etc/pacoloco.yaml` sangat penting
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supaya Pacoloco _service_ dapat berjalan dengan baik.
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```yaml
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# /etc/pacoloco.yaml
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# cache_dir: /var/cache/pacoloco
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cache_dir: /mnt/msata/Public/pacololo
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port: 9129
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download_timeout: 3600 ## downloads will timeout if not completed after 3600 sec, 0 to disable timeout
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purge_files_after: 2592000 ## purge file after 30 days
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# set_timestamp_to_logs: true ## uncomment to add timestamp, useful if pacoloco is being ran through docker
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repos:
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archlinux:
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urls: ## add or change official mirror urls as desired, see https://archlinux.org/mirrors/status/
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- http://mirror.ditatompel.com/archlinux
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- https://mirror.ditatompel.com/archlinux
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archlinux-reflector:
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mirrorlist: /etc/pacman.d/mirrorlist ## Be careful! Check that pacoloco URL is NOT included in that file!
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## Local/3rd party repos can be added following the below example:
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# quarry:
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# http_proxy: http://bar.company.com:8989 ## Proxy could be enabled per-repo, shadowing the global `http_proxy` (see below)
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# url: http://pkgbuild.com/~anatolik/quarry/x86_64
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prefetch: ## optional section, add it if you want to enable prefetching
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#cron: 0 0 3 * * * * ## standard cron expression (https://en.wikipedia.org/wiki/Cron#CRON_expression) to define how frequently prefetch, see https://github.com/gorhill/cronexpr#implementation for documentation.
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cron: 0 */4 * * *
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ttl_unaccessed_in_days: 30 ## defaults to 30, set it to a higher value than the number of consecutive days you don't update your systems. It deletes and stops prefetching packages (and db links) when not downloaded after "ttl_unaccessed_in_days" days that it has been updated.
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ttl_unupdated_in_days: 300 ## defaults to 300, it deletes and stops prefetching packages which haven't been either updated upstream or requested for "ttl_unupdated_in_days".
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# http_proxy: http://proxy.company.com:8888 ## Enable this if you have pacoloco running behind a proxy
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# user_agent: Pacoloco/1.2
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```
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Mari kita uraikan beberapa konfigurasi penting di atas:
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- `cache_dir` adalah direktori tempat _package_ yang diminta oleh klien akan
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disimpan. Perlu diperhatikan bahwa direktori ini memerlukan _read and write
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access_ oleh proses server.
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- Di bagian `repos`, saya menambahkan mirror milik saya sendiri. Anda bisa
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menambahkan atau menggunakan mirror favorit Anda di sini.
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- Terakhir, saya mengaktifkan fitur `prefetch`, dimana Pacoloco akan secara
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otomatis mengunduh _package_ yang pernah diminta oleh pengguna setiap 4 jam
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(dari konfigurasi `cron`). Dan saya membiarkan konfigurasi lainnya
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sebagaimana adanya.
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Setelah mengonfigurasi file `/etc/pacoloco.yaml` Anda, aktifkan _service_
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Pacoloco dengan menjalankan `sudo systemctl enable pacoloco --now`. Pastikan
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bahwa _service_ Pacoloco aktif dan berjalan dengan menjalankan perintah `sudo
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systemctl status pacoloco`.
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### Menggunakan Pacoloco sebagai Mirror Arch Linux Anda
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Untuk menggunakan Pacoloco sebagai mirror Arch Linux Anda, tambahkan URL
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Pacoloco Anda di bagian paling atas di file `/etc/pacman.d/mirrorlist` Anda:
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```plain
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# ubah IP dan port ke server Pacoloco Anda, port default adalah 9129
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Server = http://192.168.2.22:9129/repo/archlinux/$repo/os/$arch
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```
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Kemudian, Anda dapat melakukan _full system upgrade_ menggunakan perintah
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`sudo pacman -Syu` seperti biasa.
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> Tips: Sebelum melakukan _full system upgrade_, luangkan waktu untuk
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> mengunjungi [situs web resmi Arch Linux][arch-web]. Di halaman depan, selalu
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> ada berita terbaru terkait distribusi Arch Linux. Terkadang, informasi ini
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> mencakup apakah intervensi manual perlu dilakukan sebelum atau sesudah proses
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> upgrade.
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>
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> Selain itu, periksa juga [forum Arch Linux][arch-forum-active-topic] karena
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> Anda mungkin menemukan beberapa informasi berharga dan solusi dari pengguna
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> lain ketika menalami masalah setelah proses upgrade.
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[pacoloco-repo]: https://github.com/anatol/pacoloco "Pacoloco Official GitHub Repository"
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[arch-mirrors]: https://archlinux.org/mirrors/ "Arch Linux Mirror Overview Page"
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[arch-web]: https://archlinux.org/ "Arch Linux Official Website"
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[arch-forum-active-topic]: https://bbs.archlinux.org/search.php?action=show_recent "Arch Linux Forum Active Topic"
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@ -0,0 +1,135 @@
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---
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title: "Pacoloco: A Caching Proxy Server For Arch Linux Mirrors"
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description: Pacoloco is a caching proxy server designed specifically for Pacman. It runs as a web server that acts like an Arch Linux Mirrors, allowing it to cache and serve packages to users.
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summary: Speed up your Arch Linux full system upgrade using Pacoloco, a caching proxy server designed specifically for Pacman.
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date: 2025-04-05T15:30:00+07:00
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lastmod:
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draft: false
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noindex: false
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nav_weight: 1000
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categories:
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- SysAdmin
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- TIL
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tags:
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- Arch Linux
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- Open Source
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images:
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authors:
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- ditatompel
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---
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If you're using multiple Arch Linux machines on your local network, you might
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be interested in learning about **Pacoloco**. [Pacoloco][pacoloco-repo] is a
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caching proxy server designed specifically for **Pacman**, the package manager
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of Arch Linux. It runs as a web server that acts like an [Arch Linux
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Mirrors][arch-mirrors], allowing it to cache and serve packages to users.
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Every time the Pacoloco server receives a request from a user, it downloads the
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requested file from a real Arch Linux mirror and bypasses it to the user, while
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keeping copies of downloaded packages in local storage.
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https://youtu.be/
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{{< youtube meVHOzgke10 >}}
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## Case Study: Implementing Pacoloco on My Local Network
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I have a small number of Arch Linux machines on my local network, including one
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virtual machine on **Proxmox** and another KVM on my laptop. I also have an old
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[ThinkPad T420](https://tokopedia.link/z7b3wfiGjSb) laptop, which is also
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running Arch Linux. To optimize my setup and reduce bandwidth usage, I decided
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to run the Pacoloco service on this ThinkPad T420.
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### System Requirement
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Pacoloco service doesn't require much processing power, so a single-core CPU
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with at least 1GB of memory should be sufficient for most users. However, using
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a fast Ethernet port and an SSD for its cache storage will provide better
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benefits. In my case, the ThinkPad T420 has a **GbE Ethernet port**, which
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enables transfer speeds of approximately 110MiB/s on average.
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Since Pacoloco does not mirror the entire Arch repository and only downloads
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files needed by local users, the local cache size requires very little storage.
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In my case, my local cache is only about 6GB. This is because the Pacoloco
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service automatically deletes packages that have not been downloaded for a
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certain period of time.
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### Installing and Configuring Pacoloco
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To install Pacoloco, run `sudo pacman -S pacoloco` from your terminal. The
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configuration file (`/etc/pacoloco.yaml`) is essential for setting up the
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server correctly.
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```yaml
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# /etc/pacoloco.yaml
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# cache_dir: /var/cache/pacoloco
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cache_dir: /mnt/msata/Public/pacololo
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port: 9129
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download_timeout: 3600 ## downloads will timeout if not completed after 3600 sec, 0 to disable timeout
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purge_files_after: 2592000 ## purge file after 30 days
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# set_timestamp_to_logs: true ## uncomment to add timestamp, useful if pacoloco is being ran through docker
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repos:
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archlinux:
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urls: ## add or change official mirror urls as desired, see https://archlinux.org/mirrors/status/
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- http://mirror.ditatompel.com/archlinux
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- https://mirror.ditatompel.com/archlinux
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archlinux-reflector:
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mirrorlist: /etc/pacman.d/mirrorlist ## Be careful! Check that pacoloco URL is NOT included in that file!
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## Local/3rd party repos can be added following the below example:
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# quarry:
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# http_proxy: http://bar.company.com:8989 ## Proxy could be enabled per-repo, shadowing the global `http_proxy` (see below)
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# url: http://pkgbuild.com/~anatolik/quarry/x86_64
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prefetch: ## optional section, add it if you want to enable prefetching
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#cron: 0 0 3 * * * * ## standard cron expression (https://en.wikipedia.org/wiki/Cron#CRON_expression) to define how frequently prefetch, see https://github.com/gorhill/cronexpr#implementation for documentation.
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cron: 0 */4 * * *
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ttl_unaccessed_in_days: 30 ## defaults to 30, set it to a higher value than the number of consecutive days you don't update your systems. It deletes and stops prefetching packages (and db links) when not downloaded after "ttl_unaccessed_in_days" days that it has been updated.
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ttl_unupdated_in_days: 300 ## defaults to 300, it deletes and stops prefetching packages which haven't been either updated upstream or requested for "ttl_unupdated_in_days".
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# http_proxy: http://proxy.company.com:8888 ## Enable this if you have pacoloco running behind a proxy
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# user_agent: Pacoloco/1.2
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```
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Let's break down some of important configuration above:
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- `cache_dir` is a directory where packages requested by clients will be
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stored. I changed the default cache directory to another physical disk so
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that it doesn't overwhelm my main disk read and write operation. Please note
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that this directory requires read and write access by the server process.
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- In the `repos` section, I added my own mirror. Feel free to use your favorite
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mirrors here.
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- Last, I activated the `prefetch` feature, where Pacoloco will automatically
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download package updates that have been requested by users every 4 hours
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(from `cron` config). And I leave the other configurations as they are.
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After configuring your `/etc/pacoloco.yaml` file, enable Pacoloco service by
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running `sudo systemctl enable pacoloco --now`. Make sure that the service is
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active and running by executing `sudo systemctl status pacoloco`.
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### Using Pacoloco as Your Arch Linux Mirror
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To use Pacoloco as your Arch Linux mirror, add your Pacoloco URL at the top of
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your `/etc/pacman.d/mirrorlist` file:
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```plain
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# change IP and port to your Pacoloco server, default port is 9129
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Server = http://192.168.2.22:9129/repo/archlinux/$repo/os/$arch
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```
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And, that's it. You can do full system upgrade using `sudo pacman -Syu` as
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usual. It will fetch the requested packages from your Pacoloco server first.
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> **Tips**: When doing a full system upgrade, take the time to visit the
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> [official Arch Linux website][arch-web]. On the front page, there is always
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> the latest news related to the Arch Linux distribution. Sometimes, this
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> information includes whether manual intervention may be required during the
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> upgrade process or not.
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>
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> In addition, also check out the [Arch Linux forum][arch-forum-active-topic]
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> because you may find some valuable insights and troubleshooting tips from
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> other users who have experienced similar issues when upgrading.
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[pacoloco-repo]: https://github.com/anatol/pacoloco "Pacoloco Official GitHub Repository"
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[arch-mirrors]: https://archlinux.org/mirrors/ "Arch Linux Mirror Overview Page"
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[arch-web]: https://archlinux.org/ "Arch Linux Official Website"
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[arch-forum-active-topic]: https://bbs.archlinux.org/search.php?action=show_recent "Arch Linux Forum Active Topic"
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