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ScAlAn

Scientific Algorithms and Analytics

Tag: DevOps

Raspberry Pi Set custom display resolution

Task: Set custom screen size and use it on small monitor Solution: Use next commands: Done.
Continue reading “Raspberry Pi Set custom display resolution”…
Posted on: March 22, 2023 Last updated on: March 22, 2023 Comments: 0 Written by: Alex

Prepare infrastructure, CI/CD, Support of WP site on AWS

Tasks: 1. Prepare BeansTalk infrastructure for WP site (EC2, ALB, ASG, EFS, RDS) – dev, test, prod; 2. Prepare infrastructure…
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Posted on: November 23, 2022 Last updated on: March 23, 2023 Comments: 0 Written by: Alex

How to execute SQLs in the docker Postgres db

Task: Write script to execute SQL commands in the docker Prostgers DB Script: Import dump file: Done.
Continue reading “How to execute SQLs in the docker Postgres db”…
Posted on: July 12, 2022 Last updated on: July 12, 2022 Comments: 0 Written by: Alex

How to Set all directories to 755 and all files to 644

Task: set different attributes for files and directories Solution: Done.
Continue reading “How to Set all directories to 755 and all files to 644”…
Posted on: June 29, 2022 Last updated on: June 29, 2022 Comments: 0 Written by: Alex

Install Java on Raspberry Pi

Task: Install Java on Raspberry Pi Implementation: Update system:sudo apt updatesudo apt upgrade Install java:sudo apt install default-jdk Check it…
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Posted on: April 21, 2022 Last updated on: April 21, 2022 Comments: 0 Written by: Alex

Monitor periodically linux ordered processes

Task: Monitor processes on the linux instance order by CPU usage Solution Use next command (displays top 15 rows): ps…
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Posted on: November 24, 2021 Last updated on: November 24, 2021 Comments: 0 Written by: Alex

AWS get list of ec2 ids by beanstalk environment name

Task: Get list of EC2 instances Id(s) by beanstalk environment name Solution: envname=”wp-env” for ec2Id in $(aws elasticbeanstalk describe-environment-resources –environment-name…
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Posted on: October 29, 2021 Last updated on: October 29, 2021 Comments: 0 Written by: Alex

Linux: /dev/ttyUSB0: Permission denied

Problem: Can’t connect to the Arduino device. Solution: Run next command(s) under root user: usermod -a -G dialout scalan usermod…
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Posted on: September 21, 2021 Last updated on: September 21, 2021 Comments: 0 Written by: Alex

Liquibase: Index.exists exception fix

Task: Fix index exists precondition exception Solution: Instead of using index exists liquibase tag use sql to check index exists.…
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Posted on: September 20, 2021 Last updated on: September 20, 2021 Comments: 0 Written by: Alex

Docker: How to copy file from container to local computer

Task: Copy some file from container to local computer Solution: docker cp <container>:<path><filename.ext> <localpath> Example: docker cp nginx:/var/log/mylog.log . Done.
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Posted on: September 1, 2021 Last updated on: September 1, 2021 Comments: 0 Written by: Alex

Git: How to compare two branches

Task: Compare two different git branches Solution: git diff branch1 branch2 Note: compare by specific file type git diff branch1…
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Posted on: August 26, 2021 Last updated on: August 26, 2021 Comments: 0 Written by: Alex

Add php imap.so library on osX

Task: Add imap.so library on Mac osX Implementation (run commands in the console): Done.
Continue reading “Add php imap.so library on osX”…
Posted on: May 28, 2021 Last updated on: May 28, 2021 Comments: 0 Written by: Alex
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