[Júne's Wiki] deb_debris

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  * {{fa>server?color=#8B0000}} Linux
    * [[rpi_common|■ General Things on Raspbian]]
    * [[rpi_nimbus|𝐍𝐢𝐌𝐁𝐔𝐒 𝕕𝕖𝔹𝕝𝕒𝕟𝕔]]
    * [[debian_common|■ General info on Debian Linux]]
    * [[deb_cicada|𝐂𝐢𝐂𝐀𝐃𝐀 𝕊𝕒𝕩𝕠𝕥𝕦𝕞]]
    * [[deb_mutism|𝐌𝐔𝐓𝐢𝐒𝐌 𝕄𝕒𝕘𝕟𝕦𝕞]] 
    * [[deb_gilead|𝐆𝐢𝐋𝐄𝐀𝐃 𝔸𝕣𝕘𝕖𝕟𝕥𝕒]] 
    * [[deb_symbio|𝐒𝐘𝐌𝐁𝐢𝐎 ℂ𝕠𝕟𝕒𝕥𝕦𝕤]]
    * [[deb_tardis|𝐓𝐀𝐑𝐃𝐢𝐒 𝕊𝕡𝕒𝕥𝕚𝕦𝕞]] 
  * {{fa>windows?color=#0000A0}} Windows
    * [[:pc_common|■ Common Works on Windows]]
    * [[PC_MESONiSM|𝐌𝐄𝐒𝐎𝐍𝐢𝐒𝐌]] 
    * [[PC_MESONiST|𝐌𝐄𝐒𝐎𝐍𝐢𝐒𝐓]]
  * {{fa>android?color=#006400}} Android
    * [[:cell_common|■ Common Stuffs on Androids]]
    * [[CELL_EPiCON|𝐄𝐏𝐢𝐂𝐎𝐍 𝔽𝟙]] 
    * [[CELL_EPiMER|𝐄𝐏𝐢𝐌𝐄𝐑 𝟡]] 
    * [[CELL_EPiLUX|𝐄𝐏𝐢𝐋𝐔𝐗 𝟟]]   
    * [[CELL_EPiTAP|𝐄𝐏𝐢𝐓𝐀𝐏 𝟙𝟙]] 
    * [[CELL_EPiETA|𝐄𝐏𝐢𝐄𝐓𝐀 𝟜]] 
</nav>
===== Finca LaDichium ─ DEBRiS Chrome =====

{{:ubuntu-20-04-1.jpg?nolink&250|}}

Name: {{mdi>cards?28&color=#ffdd00}} ''**DEBRiS** Chrome'' (official) | {{mdi>creation?28&color=#ffdd00}} ''도라에몽'' (korean)

{{mdi>account-alert-outline?2x&color=#ffdd00}} **System Consideration**: ① Size of system partition is critically small ② Data should be stored on attached disk(s) 

----

==== Specification ==== 

{{mdi>cpu-64-bit?28&color=#ffdd00}} CPU: ''Intel<sup>(r)</sup> Celeron<sup>(r)</sup> CPU **N3060 @ 1.60GHz** (2 cores)'' --- [[https://meson.in/2NxusAS|Product info]]

{{mdi>memory?28&color=#ffdd00}} Main Memory: ''**2G**''

{{mdi>harddisk?28&color=#ffdd00}} Storages: 
  * ''**32G**'' (m.2 type SSD) --- ''**/**'' partition 
  * ''**1024G**'' --- ''**/home**'' partition {{fa>usb?14&color=#005eb8}} 

=== Live status of storages ===

<code ini>
Mounted on Type  Size  Used Avail Use%
/          ext4   20G  7.9G   11G  43%
/boot      ext4  974M  253M  655M  28%
/home      ext4  916G  292G  578G  34%
</code>

{{mdi>wifi?28&color=#ffdd00}} Wireless Network: 
    * Intel<sup>(r)</sup> Dual Band Wireless-AC 3160 (802.11ac) --- [[https://meson.in/2ZjAv19|Product info]]
    * Realtek Semiconductor Corp. RTL8188EUS 802.11n Wireless Network Adapter

----

==== ＋Work logs ==== 

  * Attach Ubuntu Pro subscription <sub>  --- Updated on //2024/05/21 17:41// </sub>
  * Upgrade ''php 8.2'' and purge ''php 7.4'', ''php 8.0'' and ''php 8.1'' <sub>  --- Updated on //2023/06/04 03:57// </sub>
  * Upgrade ''Ubuntu 22.04.1 LTS (Jammy Jellyfish)'' <sub>  --- Updated on //2022/09/09 17:40// </sub>
  * Fresh installation for Ubuntu Server 20.04 ''focal'' <sub>  --- Updated on //2020/10/12 20:44// </sub>
  * Upgrade ''mariadb 10.5'' <sub>  --- Updated on //2020/08/31 13:15// </sub>
  * Get certificates for ''sayah.kr'' <sub>  --- Updated on //2020/06/28 19:09// </sub>
  * Install ''WordPress'' {{mdi>wordpress}} for ''sayah'' <sub>  --- Updated on //2020/06/28 19:07// </sub>
  * Change ''backup rsync'' to another partition <sub>  --- Updated on //2020/06/27 04:01// </sub>
  * Install ''Nextcloud'' named ''cloud.ejestate.tk'' <sub>  --- Updated on //2020/03/29 22:22// </sub>

=== ＋Que to do === 

----
==== Hosting Services ==== 

<button type="danger" icon="fa fa-sliders">[[https://wiki.meson.one/doku.php?id=secured:nginx_config#debris_chrome|Nginx Configuration]]</button> Showing lively on OWL {{fa>opera?14&color=#cc0f16}} for ''**DEBRiS** Chrome'' {{fa>lock?color=#808080}} 

----

==== Gemini Services ==== 

Duplicate and backup for ''wiki.meson.in'' and ''wiki.meson.one'' (OWL) toward backup server. 

Create ''/var/www/.ssh'' and Generate Pairwise keys on source server 

<code bash>
sudo mkdir /var/www/.ssh 
sudo chown -Rf www-data:www-data /var/www/.ssh 

sudo -u www-data ssh-keygen -t rsa -b 4096  
</code>

File synchronization using ''rsync'' to remote (target) server 

<code bash> 
sudo -u www-data rsync -azP --rsync-path="sudo rsync" /var/www/source.directory/ user@target.server:/home/to/path/target.directory/
</code>

Create executive file ''/usr/local/rsync_wiki'' and make it executable ''sudo chmod +x'' 

<code bash>
#!/bin/sh
sudo -u www-data rsync -azP -e 'ssh -p 2020' --progress --rsync-path="sudo rsync" /var/www/wiki.meson.in/ meson@target.com:/home/meson/webroot/wiki.meson.in/
</code>

----

==== Limit size of journal logs ==== 

edit ''/etc/systemd/journald.conf'' 

<code ini> 
SystemMaxUse=100M 
</code> 

Clear journal logs with command 

<code bash> 
journalctl --vacuum-time=2d   
journalctl --vacuum-size=500M
</code> 

Usually it could free over 3.0G up on (system) disk. 

---- 

==== Nginx Reverse proxy ==== 

Subsonic server is using port ''4040''. Then create virtual host in Nginx with SSL and add the following lines. 

<code nginx>
        location / {
                
                proxy_pass http://localhost:4040/;
                proxy_set_header Host $host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

  }
</code> 

Edit ''/etc/default/subsonic'' with commenting out the following 

<code ini> 
SUBSONIC_ARGS="--port=0 --https-port=4040 --context-path=/ --max-memory=200"
</code> 
 

----

===== Solved problems =====

=== Disable restarting Nginx service ===
<text type="warning">{{fa>exclamation}} **Problem**</text>: Nginx web service is not restarting after updating certificates with ''certbot''  

<text type="danger">{{fa>bug}} **Symptom**</text>: Following messages are showing when it fails to restart 

<code nginx> 
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] still could not bind()
</code> 

<text type="info">{{fa>lightbulb-o}} **Solution**</text>: Kill nginx service with command 

<code bash> 
sudo fuser -k 443/tcp
sudo service nginx restart
</code>

----