# 01. Prasyarat Update Repository, Create User Baru dan Setup SSH Public Key ke VPS ### Login SSH Root ke VPS Linux Ubuntu Login ssh ke VPS yang telah dibuat, ketikkan perintah berikut : ```bash #ssh [user]@[ip] // default port ssh 22 ssh root@103.126.232.199 #ssh -p 2222 [user]@[ip] //optional jika port ssh tidak 22 ssh -p root@103.126.232.199 ``` [![Screenshot 2023-10-13 at 03.03.36.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-03-36.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-03-36.png) jika anda pertama kali login, akan muncul dialog untuk menyimpan detail known host ssh, masukan perintah "yes" [![Screenshot 2023-10-13 at 03.03.45.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-03-45.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-03-45.png) kemudian masukan password vps, jika host, username dan password benar, anda akan masuk ke root ssh seperti gambar berikut. [![Screenshot 2023-10-13 at 03.04.13.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-04-13.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-04-13.png) ### Merubah Repository dan Upgrade Linux Ubuntu untuk melihat/merubah repository yang digunakan di ubuntu, jalankan perintah edit berikut : ```bash nano /etc/apt/sources.list ``` [![Screenshot 2023-10-13 at 03.04.36.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-04-36.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-04-36.png) sesuaikan repository yang akan digunakan, jika sudah simpan [![Screenshot 2023-10-13 at 03.05.49.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-05-49.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-05-49.png) jalankan perintah update ```bash apt update ``` [![Screenshot 2023-10-13 at 03.06.15.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-06-15.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-06-15.png) setelah selesai update, kita bisa lihat list package yang bisa di upgrade [![Screenshot 2023-10-13 at 03.07.07.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-07-07.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-07-07.png) untuk melihat aplikasi yang bisa di upgrade jalankan perintah berikut ```bash apt list --upgradeable ``` [![Screenshot 2023-10-13 at 03.07.44.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-07-44.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-07-44.png) jika sudah yakin dengan package-package yang akan diupgrade, jalankan perintah ```bash apt upgrade ``` kemudian tekan "Y" [![Screenshot 2023-10-13 at 03.08.37.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-08-37.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-08-37.png) pada dialog Configuring Openssh-server, kita bisa pilih Keep the local version currently installed, kemudian klik tab dan enter [![Screenshot 2023-10-13 at 03.18.42.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-18-42.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-18-42.png) pada dialog Pending kernel upgrade, klik tab dan enter [![Screenshot 2023-10-13 at 03.21.07.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-21-07.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-21-07.png) kemudian pada dialog Daemons using outdated libraries, bisa kita pilih service daemon apa yang mau direstart, kemudian klik tab dan enter [![Screenshot 2023-10-13 at 03.21.37.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-21-37.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-21-37.png) semua dialog sudah dikonfirmasi pada saat upgrade, anda akan mendapatkan pesan sukses upgrade seperti dibawah ini [![Screenshot 2023-10-13 at 03.22.06.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-22-06.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-22-06.png) ### Menambahkan user non-root baru untuk menambahkan user baru, login ssh sebagai root, dan jalankan perintah berikut : ```bash adduser naja ``` [![Screenshot 2023-10-13 at 03.26.31.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-26-31.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-26-31.png) Isi password dan kemudian semua detail user yang akan di create seperti gambar berikut [![Screenshot 2023-10-13 at 03.27.05.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-27-05.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-27-05.png) kemudian jalankan perintah berikut untuk menambahkan user naja ke group sudo ```bash usermod -aG sudo naja ``` coba login ssh dengan user naja [![Screenshot 2023-10-13 at 03.28.29.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/F4uscreenshot-2023-10-13-at-03-28-29.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/F4uscreenshot-2023-10-13-at-03-28-29.png) lakukan perintah dengan sudo seperti berikut untuk melakukan pengecekan apakah sudah mendapatkan akses sudo ```bash sudo ls / ``` ### Generate Public Key SSH dan Copy ke VPS untuk generate ssh key, jalankan perintah berikut ```bash ssh-keygen -t rsa ``` [![Screenshot 2023-10-13 at 03.30.07.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/fGrscreenshot-2023-10-13-at-03-30-07.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/fGrscreenshot-2023-10-13-at-03-30-07.png) tentukan lokasi file penyimpanan rsa nya, dan klik enter, untuk password bisa dimasukan dengan password yang berbeda dengan password VPS atau tanpa password [![Screenshot 2023-10-13 at 03.30.56.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-30-56.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-30-56.png) jika sudah tergenerate, copy public ssh key ke vps dengan perintah ```bash ssh-copy-id -f -i /Users/naja/.ssh/idrive_rsa.pub naja@103.126.232.199 ``` [![Screenshot 2023-10-13 at 03.32.00.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-32-00.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-32-00.png) coba login ssh dengan private key dengan perintah ```bash ssh -i /Users/naja/.ssh/idrive_rsa naja@103.126.232.199 ``` [![Screenshot 2023-10-13 at 03.32.52.png](https://book.najamudinridha.com/uploads/images/gallery/2023-10/scaled-1680-/screenshot-2023-10-13-at-03-32-52.png)](https://book.najamudinridha.com/uploads/images/gallery/2023-10/screenshot-2023-10-13-at-03-32-52.png) selamat anda telah berhasil login ssh dengan private dan public key