Bách Dương bachdgvn

How to get a stack trace for each thread in a running python script

Sometimes a python script will simply hang forever with no indication of where things went wrong. Perhaps it's polling a service that will never return a value that allows the program to move forward. Here's a way to see where the program is currently stuck.

Install gdb and pyrasite

Install gdb.

# Redhat, CentOS, etc

Importing and exporting CSV files with PostgreSQL

Let’s see how to use PostgreSQL to import and export CSV files painlessly with the COPY command.

Import CSV into table t_words:

COPY t_words FROM '/path/to/file.csv' DELIMITER ',' CSV;

You can tell quote char with QUOTE and change delimiter with DELIMITER.

Let's Encrypt

Examples of getting certificates from Let's Encrypt working on Apache, NGINX and Node.js servers.

Obtain certificates

I chose to use the manual method, you have to make a file available to verify you own the domain. Follow the commands from running

git clone https://github.com/letsencrypt/letsencrypt
cd letsencrypt

	adb help // List all comands

	== Adb Server
	adb kill-server
	adb start-server

	== Adb Reboot
	adb reboot
	adb reboot recovery
	adb reboot-bootloader

	# Docker-in-Docker Gitlab runners setup taken from:
	# https://medium.com/@tonywooster/docker-in-docker-in-gitlab-runners-220caeb708ca
	dind:
	restart: always
	privileged: true
	volumes:
	- /var/lib/docker
	image: docker:17.09.0-ce-dind
	command:
	- --storage-driver=overlay2

	gitlab:
	image: 'gitlab/gitlab-ce:latest'
	container_name: gitlab
	restart: always
	hostname: 'gitlab.mcu.dc'
	environment:
	GITLAB_OMNIBUS_CONFIG: \|
	external_url 'http://gitlab.mcu.dc:8090'
	gitlab_rails['gitlab_shell_ssh_port'] = 2290
	gitlab_rails['smtp_enable'] = true