Linux: How to use rescue system to fix server problem
Step 1: boot into rescue mode Some server provider provide feature Reload Operating System Step 2: find mount root filesystem Step 3: mount root filesystem…
Category: LINUX
How to install php-mongodb module for PHP 7 on Ubuntu 20.04
Step 1: install php7.4-dev sudo apt install php7.4-dev Result: Step 2: install module mongodb sudo pecl install mongodb Result: Step 3: create file /etc/php/7.4/cli/conf.d/30-mongodb.ini with…
Linux: Example usage of SCP command
What is Secure Copy? scp allows files to be copied to, from, or between different hosts. It uses ssh for data transfer and provides the same authentication and…
How to create a MongoDB Replica Set on CentOS 8
A replica set is a cluster of MongoDB database servers that implements master-slave (primary-secondary) replication. Replica sets also fail over automatically, so if one of…
How to build Python 3.8 on CentOS 7
You can choose any version you want here Example: Python 3.8.6 https://www.python.org/downloads/release/python-386/ Source code: https://www.python.org/ftp/python/3.8.6/Python-3.8.6.tgz Step 1: install requirements Step 2: Download source code Result:…
How to install Composer on CentOS 8
Step 1: install curl yum install -y curl Step 2: curl -sS https://getcomposer.org/installer | php Result: Step 3: mv composer.phar /usr/local/bin/composer
CentOS Nginx PHP-fpm: how to fix error: connect() to 127.0.0.1:9000 failed (13: Permission denied) while connecting to upstream
CentOS Nginx PHP-fpm: how to fix error: connect() to 127.0.0.1:9000 failed (13: Permission denied) while connecting to upstream Step 1: Check error.log Step 2: Solution:…
How to install php-mongodb module for PHP 7 on CentOS 8
How to install PHP 7 on CentOS 8 Step 1: install php74-php-devel php74-php-pear yum install -y php74-php-devel php74-php-pear Step 2: install module mongodb sudo /opt/remi/php74/root/usr/bin/pecl…
How to install MongoDB on CentOS 8
We will install MongoDB 4.4 on CentOS 8 Step 1: install requirements Result: Step 2: Find RPM file here mongodb-org-server-4.4.1: mongodb-org-server-4.4.1-1.el8.x86_64.rpm mongodb-database-tools: mongodb-database-tools-100.2.0.x86_64.rpm mongodb-org-database-tools-extra: mongodb-org-database-tools-extra-4.4.1-1.el8.x86_64.rpm…
CentOS 7: BUG: soft lockup – CPU#3 stuck for 22s!
CentOS 7: BUG: soft lockup – CPU#3 stuck for 22s! Read current value of file /proc/sys/kernel/watchdog_thresh Increase this value: