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Time To First Byte (TTBF)
Featured Linux SEO Web Server 

How to Check TTFB (Time To First Byte) using CURL

01/11/202021/12/2021 ServerDiary 0 Comments Chech TTFB, CURL, Time To First Byte

Time to first byte (TTFB) is one of the many reasons why a website is fast or slow. Now, Google

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Xvfb.service Systemd
Linux 

How to install Xvfb and create systemd Xvfb service on CentOS 7 / 8 or RHEL 7 / 8

10/10/202010/10/2020 ServerDiary 0 Comments xvfb, xvfb.service

Xvfb or X virtual framebuffer is a display server implementing the X11 display server protocol. In contrast to other display

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Auto Renewal Lets Encrypt SLL Certificate Using Sysstemd Service and Systemd Timer
Featured Linux Web Server 

Auto renew Let’s Encrypt SSL Certificate using Systemd and restart Nginx / Apache if success

05/09/202005/09/2020 ServerDiary 2 Comments ssl certificate

On other post, we create an article how to obtain Let’s Encrypt SSL Certificate on Centos 6/7/8 or RHEL 6/7/8.

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Let's Encrypt SLL Certificate
Featured Linux Web Server 

How to obtain Let’s Encrypt SSL Certificate for Apache or Nginx using Certbot

05/09/202005/09/2020 ServerDiary 1 Comment nginx, ssl certificate

Now SSL is one of SEO (Search Engine Optimization) signal. Read it on Google Webmaster Blog. If you only has

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Conntrack UDP Connection
Linux 

How to check UDP connection on Linux using Conntrack

12/06/2020 ServerDiary 0 Comments conntrack, udp connection

This linux command line to check UDP connection on Linux using Conntrack command. If you want to exclude localhost, you

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How to Install and Configure Lsyncd on CentOS
Featured Linux 

How to auto sync file to another server using Lsyncd on Centos 7

30/05/202014/12/2021 ServerDiary 0 Comments auto sync, lsyncd

Lsyncd watches a local directory trees event monitor interface (inotify or fsevents). It aggregates and combines events for a few

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CSF Error: Binary location for HOST is either incorrect, is not installed or is not executable
Linux 

CSF Error: *WARNING* Binary location for [HOST] [/usr/bin/host] in /etc/csf/csf.conf is either incorrect, is not installed or is not executable

18/04/202018/04/2020 ServerDiary 0 Comments csf error

If you have error warning on CSF (ConfigServer Security & Firewall) on Linux servers when start or restart CSF like

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SELinux Remote MySQL Error
Database Linux 

How to SELinux allow Apache or PHP-FPM connect remote MySQL

11/04/202011/04/2020 ServerDiary 1 Comment selinux apache, selinux httpd, selinux php-fpm, selinux remote mysql

If you have trouble apache or PHP-FPM can not connect to remote MySQSL server, example error on PDO connection on

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Rsync with SSH Custom Port
Linux 

How to Sync Directories Using Rsync with Custom SSH Port

05/04/202005/04/2020 ServerDiary 0 Comments rsync custom port, rsync non standard port, ssh custom port, ssh non standard port

SSH default port is 22, every body knew it. And it will cause many brute force SSH attacks. For security

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Linux 

How to make symbolic link on Linux chroot or jail user

10/02/202011/02/2020 ServerDiary 2 Comments symbolic link chrooted user, symbolic link jailed user

Sometimes we need to create a jailed user on Linux to restrict that user. However, sometimes we need the jailed

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