How to disable run multiple cron jobs on different EC2 instances
Task: Disable run multiple cron jobs on different EC2 instances with common EFS directory Implementation Run bash script as a…
Author: Alex
Yii get user’s attributes
Task: get password from user Object: app\models\User#1( => null => null => null … => […
Amazon Linux + Apache + phpFPM
Task: Prepare environment with Apache and phpFPM Implementation: install apache: yum install httpd install php-fpm: yum install php-fpm add autostart:…
Arduboy sound example
Task: Play simple sound on the Arduboy device: Implementation: Done.
CLI RPN Calculator
Task: Implement a command-line reverse polish notation (RPN) calculator using a language that you know well. Language: Java Java command…
How to make dump of Elasticsearch index
Task: Create dump of index in JSON format Steps: install npminstall elasticdump tools:npm install elastic dump -g command to make…
Arduino fast sin function
Task: Create fast function to get math sinus. One of implementation – create array for each degree values: float sin…
HowTo tar with process symlink directory files
Task: compress directory with all symlink files. Use command: # tar -cvhf backup.tar /backupdirectory Result – tar.gz file with all…
Configure WP HyperDB plugin
Task: Add and configure HyperDB plugin to work with master and slave MySQL databases. Implementation: Configure MySQL master and slave…
Docker: Setup MySQL master-slave
Task: create docker-compose environment to run MySQL master and slave servers. Implementation: docker-compose.yml file: version: ‘2’ services: mysqldb-master: image: mysql:5.7…
Setup nginx+php7.2fpm Ubuntu 18.04
Install NGINX # Install software-properties-common package to give us add-apt-repository package sudo apt-get install -y software-properties-common # Install latest nginx…
Get all files modified in last 5 days in a directory with subdirectories
Task: Prepare list of files with path add created datetime; Implementation use command in the linux or Mac OS: find…
Docker MySQL Stress test
Task: Create environment to run series of read/write queries to real MySQL server. Before make real experiments I tried to…
Fix import huge database into Docker MySQL container
When I tried to import dump file using mysql command I saw ‘lost connection’ or ‘server has gone away’ error……
WP fix run site locally
WordPress has option(s) with site URL. To change them to new one use next SQLs: UPDATE `wp_options` SET `option_value` =…