Customizing Jitsi Meet

Edit Logo Image:

In your jitsi-meet deployment, probably in /usr/share/jitsi-meet/images the image file will exist that you can override with your own.

Update Link on Logo:

You can edit:
Path: /usr/share/jitsi-meet
File: interface_config.js
Parameter: JITSI_WATERMARK_LINK:
or SHOW_WATERMARK_FOR_GUESTS: false

Change texts of Welcome/Home Page: Continue reading “Customizing Jitsi Meet” »

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Build a Public NTP Server

Install NTPd and Configure NTP server for time adjustment.

[root@dlp ~]# yum -y install ntp
[root@dlp ~]# vi /etc/ntp.conf
# line 18: add the network range you allow to receive requests publicly
restrict 0.0.0.0 mask 128.0.0.0 nomodify notrap

# change servers for synchronization

#server 0.centos.pool.ntp.org iburst
#server 1.centos.pool.ntp.org iburst
#server 2.centos.pool.ntp.org iburst
#server 3.centos.pool.ntp.org iburst
server bsti1.time.gov.bd iburst
server bsti2.time.gov.bd iburst
[root@dlp ~]# systemctl start ntpd
[root@dlp ~]# systemctl enable ntpd

If Firewalld is running, allow NTP service. NTP uses 123/UDP. Continue reading “Build a Public NTP Server” »

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Large Database Import Progress Using PV

PV can report progress for large data imports. In this example I will use a large (7 G) install on Ubuntu. First, download PV (http://linux.die.net/man/1/pv)

sudo apt-get install pv

A traditional mysql import may be formatted as:

mysql -u USER -p DATABASE_NAME < DUMP.mysql

but to leverage PV, pass the dump file ,then pipe the mysql command specifying the database with -D flag:

pv DUMP.mysql | mysql -u USER -p -D DATABASE_NAME

Your import will report progress and an ETA 🙂

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Installing Manageengine Opmanager 12 standar/pro edition on Linux Centos 7

Lately for a project needed to install opmanager for a specific client. The installation is quite straight forward on a fresh installation of Centos 7 Box. Assuming you already have a linux installaiton file (ended with .bin) file. So here it goes-

Installing OpManager on Linux using Console mode / Silent mode
This is a quick walk-through of the console mode installation of OpManager on a Linux box – an easy thing to do if you are working on a Windows box and want to install on a remote Linux system.

Prerequisites

To begin with, make sure you have downloaded the binary for Linux. (https://www.manageengine.com/network-monitoring/download.html)

Steps to install

Step 1: Execute the binary with administrator privileges (sudo) and -i console option.

Continue reading “Installing Manageengine Opmanager 12 standar/pro edition on Linux Centos 7” »

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বাবা ভাঙ্গার যত ভবিষ্যদ্বাণী

কে এই বাবা ভাঙ্গা?
বুলগেরিয়ায় জন্ম নেয়া বাবা ভাঙ্গা তাঁর জীবনে যত ভবিষ্যদ্বাণী করেছেন তার ৮৫ শতাংশই মিলে গেছে৷ ১৯৯৬ সালে ৮৫ বছর বয়সে তিনি মারা যান৷ কথিত আছে, রহস্যময় এক ঝড় তরুণী বাবা ভাঙ্গাকে উড়িয়ে নিয়ে এক মাঠে ফেলে দেয়৷ বেশ কদিন পর পরিবারের লোকজন তাকে খুঁজে পায়৷ কিন্তু বালু আর ময়লার কারণে ব্যথায় তিনি চোখ খুলতে পারছিলেন না৷ পরে অন্ধ হয়ে যান তিনি৷ Continue reading “বাবা ভাঙ্গার যত ভবিষ্যদ্বাণী” »

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Let’s Encrypt for cPanel Installation

Option-1

Let’s Encrypt for cPanel Installation using Installing the cPanel Plugin

Log into your SSH client at root level, then add the Let’s Encrypt repository with the following command:

cd /etc/yum.repos.d/ && wget https://letsencrypt-for-cpanel.com/static/letsencrypt.repo

Next, install the plugin for cPanel with line below and yum:

yum -y install letsencrypt-cpanel

The installation process usually takes about a minute. If all goes well and the installation was successful, a test should run automatically. If it renders similar messages as the example below, you’re good to go:

le-cp self-test
[SELF-TEST] Can read config ............ SUCCESS.
[SELF-TEST] Can connect to daemon and check licence ............ SUCCESS.
[SELF-TEST] Can connect to Lets Encrypt ............ SUCCESS.
[SELF-TEST] Can talk to WHM API ............ SUCCESS.
[SELF-TEST] Can talk to plugin RPC ............ SUCCESS.

You can log in to your cPanel account and install your first SSL certificate.

Installing a Certificate
Once you’re logged into cPanel, you should see a Let’s Encrypt for cPanel button under Security. Click on it to access your active domains list to install a certificate.

Continue reading “Let’s Encrypt for cPanel Installation” »

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Extend/Reduce LVM’s (Logical Volume Management) in Linux

My Server Setup – Requirements

  1. Operating System – CentOS 6.5 with LVM Installation
  2. Server IP – 192.168.0.200

How to Extend Volume Group and Reduce Logical Volume

Logical Volume Extending

Currently, we have One PV, VG and 2 LV. Let’s list them one by one using following commands.

# pvs
# vgs
# lvs

Logical Volume Extending

Logical Volume Extending

Continue reading “Extend/Reduce LVM’s (Logical Volume Management) in Linux” »

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How to Add Additional Physical NICs to XenServer

From the XenServer Command Line Interface (CLI), issue the following command:

xe pif-list

Press Enter.

Note: If you have more than one XenServer in the pool, you must issue the xe host-list command to list all the XenServer hosts and write down the Universally Unique Identifier (UUID) of the host that you added the new NIC, then issue command xe pif-list host-uuid=[uuid of the XenServer host]

The preceding command lists all the physical NICs of that XenServer. If you do not see the additional NIC, you must scan for new physical interface(s) on a XenServer and issue this command:

xe pif-scan host-uuid=[uuid of the XenServer host]

Press Enter. Continue reading “How to Add Additional Physical NICs to XenServer” »

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