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How To Install OpenSSL 1.1.1 on CentOS 7

This tutorial goes through how to install openssl 1.1.1 on CentOS 7, since the yum repo only installs up to openssl 1.0.

Requirements

Upgrade the system

yum -y update

Harvester GPU Provisioning

Install Harvester, then SSH into the server.
Edit /boot/grub/grub.cfg as follows:

 set default=0
 set timeout=10

Harvester SNAT Problem

Problem Description

Harvester leverages the Kubernetes service to provide the load balancer for the service in the Harvester virtual machines. The backend servers of the load balancer are the <VM IP>:<service port>.

cw-harv:/home/rancher # kubectl get svc
NAME                        TYPE           CLUSTER-IP      EXTERNAL-IP    PORT(S)        AGE
default-nginx-lb-db9bdca5 LoadBalancer 10.43.113.238 80:32586/TCP 4h32m

Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

1️⃣ Docker daemon 配置代理（推荐）

参考 Docker daemon 配置代理

Kill user tty/pts sessions in Linux

Commands

w: show who is logged on and what they are doing
who: show who is logged on
tty: show current users pseudo terminal
ps -ft pts/1: get process id for the pseudo terminal
pkill: signal process based on name and other attributes

	version: '3'
	services:
	postgres:
	container_name: container-postgresdb
	image: postgres
	hostname: postgres
	ports:
	- "6543:5432"
	environment:
	POSTGRES_USER: postgres

	#!/bin/sh

	DateStamp=$(date +%d%m%y)

	BackupDirectory="/data/configdb/backup"
	mkdir -p $BackupDirectory

	sslCAFile="/data/configdb/mongodb-ssl-cert.pem"
	DATABASE='database'
	USERNAME='user'

	stages:
	- build

	create_badge_svg:
	stage: build
	image: python:3.6.6
	tags:
	- docker
	script:
	- echo "Python other dependencies installation"

	FROM python:3.7.2-alpine

	RUN pip install --upgrade pip

	RUN adduser -D worker
	USER worker
	WORKDIR /home/worker

	COPY --chown=worker:worker requirements.txt requirements.txt
	RUN pip install --user -r requirements.txt

	[mac os下vscode快捷键](https://www.cnblogs.com/informatics/p/8315339.html)
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	Command + Shift + P / F1 显示命令面板
	Command + P 快速打开
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	Command + W 关闭窗口

	基本
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