OS

Details: Written by: Bayu Aji; Category: OS; Published: 22 September 2022; Hits: 378

Apa fungsi Log2ram ?

Sesuai namanya dia akan menulis log di ram server kita. Untuk apa bagi pengguna rasp pi tentu sangat mempertimbangkan umur sdcard nya kan. Nah ini salah satu solusinya, mengurangi read write sdcard.

1. Install repo :

sudo echo "deb http://packages.azlux.fr/debian/ buster main" | sudo tee /etc/apt/sources.list.d/azlux.list

2. Tambahkan kunci GPG :

sudo wget -qO - https://azlux.fr/repo.gpg.key | sudo apt-key add -

3. Update packages dahulu :

sudo apt update

hem, kok muncul warning :

W: http://packages.azlux.fr/debian/dists/buster/InRelease: Key is stored in legacy trusted.gpg keyring (/etc/apt/trusted.gpg), see the DEPRECATION section in apt-key(8) for details.

Ok, kita bereskan dahulu masalah GPG

3.a. Lihat key list dahulu :

sudo apt-key list

hasilnya :

Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
/etc/apt/trusted.gpg
--------------------
pub   rsa4096 2019-12-19 [SC] [expires: 2029-12-16]
      98B8 24A5 FA7D 3A10 FDB2  25B7 CA54 8A0A 0312 D8E6
uid           [ unknown] Azlux <This email address is being protected from spambots. You need JavaScript enabled to view it.>
sub   rsa4096 2019-12-19 [E] [expires: 2029-12-16]

3.b. Ekspor key nya dahulu :

sudo apt-key export 0312D8E6 | sudo gpg --dearmour -o /usr/share/keyrings/azlux.gpg

note : 0312D8E6 adalah 8 digit terakhir dari key yang mau di sign.

3.c. Kemudian masukkan key yang tadi di eksport :

sudo echo "deb [arch=amd64 signed-by=/usr/share/keyrings/azlux.gpg] http://packages.azlux.fr/debian/ buster main" | sudo tee /etc/apt/sources.list.d/azlux.list

3.d. Hapus key original :

sudo apt-key del  0312D8E6

4. Install log2ram :

sudo apt install log2ram

5. Edit konfigurasinya :

sudo vi /etc/log2ram.conf

6. Bersihkan dahulu log yang ada, untuk menghindari alokasi log2ram tidak cukup :

sudo journalctl --rotate
sudo journalctl --vacuum-time=7d
sudo journalctl --vacuum-size=10M

7. Start log2ram dan lihat statusnya :

sudo systemctl start log2ram
sudo systemctl status log2ram

8. Beres, jika ingin lihat hasilnya bisa lakukan perintah df -h , log akan berubah lokasi dan ukuranya menyesuaikan setingan log2ram.

Details: Written by: Bayu Aji; Category: OS; Published: 22 September 2022; Hits: 388

Biasanya kalau kita update ubuntu via apt update terkadang muncul warning "The following packages have been kept back", terus bagaimana solusinya ?

Saya pernah mencoba dengan melakukan update manual packages yang tidak terupdate otomatis tersebut dan hasilnya malah ubuntu tidak mau boot karena ssh error. 😂

Dan kemudian cara teraman buat update versi newbie seperti saya adalah dengan menginstall aptitude.

Install dahulu aptitude nya :

sudo apt-get install aptitude -y

Kemudian update packages dengan cara teraman saja :

sudo aptitude safe-upgrade

Alhamdulillah proses update berjalan lancar dan warning "The following packages have been kept back" tidak muncul lagi.

Details: Written by: Bayu Aji; Category: OS; Published: 05 April 2022; Hits: 369

1. Prosedur standard :

sudo apt update && apt upgrade -y
sudo apt install -y snapd

2. install haveged untuk randomness yang lebih baik (opsional)

sudo apt install -y haveged
sudo reboot

3. Install Shadowsocks via snap supaya dapat release aplikasi yang terbaru.

sudo snap install shadowsocks-libev

Details: Written by: Bayu Aji; Category: OS; Published: 26 January 2022; Hits: 475

Artikel ini lanjutan dari artikel sebelumnya yaitu : Install OpenVpn

Hanya menambahkan dari artikel tersebut.

Networking :

Server : Ubuntu 20.04
Client : Mikrotik 6.49

Masalah : (Tidak support)

UDP mode
LZO compression
TLS authentication
authentication without username/password

1. Prosedur standard:

sudo apt update
sudo apt upgrade -y

2. Download openvpn installer :

# Installer tanpa password
wget https://git.io/vpn -O openvpn-ubuntu-install.sh
# Installer dg password
wget https://raw.githubusercontent.com/angristan/openvpn-install/master/openvpn-install.sh -O openvpn-ubuntu-install.sh

3. Rubah chmod :

chmod -v +x openvpn-ubuntu-install.sh

4. Install :

sudo ./openvpn-ubuntu-install.sh

5. Start the OpenVPN server

sudo systemctl start This email address is being protected from spambots. You need JavaScript enabled to view it.
## OR when using password to protect vpn ##
sudo systemctl start This email address is being protected from spambots. You need JavaScript enabled to view it.

6. Restart the OpenVPN server after changing configuration options

sudo systemctl restart This email address is being protected from spambots. You need JavaScript enabled to view it.
## OR when using password to protect vpn ##
sudo systemctl restart This email address is being protected from spambots. You need JavaScript enabled to view it.

7. Show status of the OpenVPN server

sudo systemctl status This email address is being protected from spambots. You need JavaScript enabled to view it.
## OR when using password to protect vpn ##
sudo systemctl status This email address is being protected from spambots. You need JavaScript enabled to view it.

Beberapa kali menyambungkan TLS mikrotik 6.49.2 ke server ubuntu 20.04 selalu saja gagal. Untuk sementara masih memakai cara tanpa TLS.

Details: Written by: Bayu Aji; Category: OS; Published: 26 January 2022; Hits: 401

Kalau kita login dalam ubuntu server kita kadang ada peringatan ada email baru ( You have new mail in /var/mail/root ) . Padahal kita tidak melakukan instalasi email di server tersebut. Nah caranya adalah sebagai berikut :

1. Untuk membaca email tersebut :

cat /var/spool/mail/root

2. Untuk menghapusnya :

> /var/spool/mail/root

Subcategories

Arduino

Mencoba belajar tentang Arduino.

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Cara install Log2ram di Ubuntu 22.04

The following packages have been kept back

Install shadowsocks di Ubuntu 20.04

Install OpenVpn Ubuntu 20.04

Baca email root di ubuntu

Subcategories

Arduino