Eric Guo's blog.cloud-mes.com

in HTML5, JavaScript, Ruby & Rails, Python, and Cloud MES!

Clean Xcode Disk Usage

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xcode-select -p # default /Library/Developer/CommandLineTools

sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer

xcrun simctl delete unavailable

sudo xcode-select --switch /Library/Developer/CommandLineTools

Quick Clean Server Disk Usage Command in Safe Way

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SystemD journal clean

journalctl --disk-usage

sudo journalctl --vacuum-size=2000M # Delete log files until the disk space taken falls below the specified size:

Or see further command

Apt cache clean

sudo apt-get clean

Yum cache clean

sudo yum clean all

Yarn cache clean

yarn cache clean --force

My Monthly Subscription Review List

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No one like subscription, but we must pay something we really need every month and here is my list in RMB:

  1. (21) iCloud 200GB
  2. (15) Apple Music
  3. (23) Dragonruby Pro (annual 42 USD)
  4. (33) bandwagon host （month 33 USD）
  5. (6) Adblock Pro (annual 70 RMB)
  6. (6) MarginNote 3 OCR (annual 68 RMB)
  7. (28) Rubymine (annual 53 USD)
  8. (27) Medium Member (annual 50 USD)
  9. (6) blog domain (annual 10 USD)
  10. (1.5) 香哈菜谱 (annual 18 RMB)
  11. (10) AWS hosting
  12. (16.8) Meituan biking
  13. (50) Slack (month 8 USD)
  14. (38) Google Workspace Business Starter (month 6 USD)

So totally 282 RMB per month have to pay.

Setup Advanced Search in Gitlab 14.7 Log

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Installation Elastic Search using Debian/Ubuntu repository

wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -

sudo apt-get install apt-transport-https

echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | sudo tee /etc/apt/sources.list.d/elastic-7.x.list

sudo apt-get update && sudo apt-get install elasticsearch

sudo systemctl daemon-reload

sudo systemctl enable elasticsearch.service

sudo systemctl start elasticsearch.service

curl localhost:9200/

Enable correct IP and other securty settings:

/etc/elasticsearch/elasticsearch.yml
cluster.name: gitlab-elasticsearch

network.host: 192.168.100.20

http.port: 9200

discovery.seed_hosts: ["192.168.100.20"]

xpack.security.enabled: true

xpack.security.transport.ssl.enabled: true

Initial password and record it down.

/usr/share/elasticsearch/bin/elasticsearch-setup-passwords auto

Install analysis-smartcn

cd /usr/share/elasticsearch/

sudo bin/elasticsearch-plugin install analysis-smartcn

sudo systemctl restart elasticsearch

Setup a Gitlab Runner Server on Ubuntu 20.04

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According to the official documentation, I having a free lighthouse server from tencent and install Ubuntu 20.04 to running gitlab runner.

Install docker.

sudo apt-get remove docker docker-engine docker.io containerd runc

sudo apt-get install ca-certificates curl gnupg lsb-release

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \

  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update

sudo apt-get install docker-ce docker-ce-cli containerd.io

docker run hello-world

Install gitlab runner

sudo su -

docker run --rm -it -v /srv/gitlab-runner/config:/etc/gitlab-runner gitlab/gitlab-runner --help

docker run --rm -it -v /srv/gitlab-runner/config:/etc/gitlab-runner gitlab/gitlab-runner register

docker run --rm -it -v /srv/gitlab-runner/config:/etc/gitlab-runner gitlab/gitlab-runner verify

docker run -d --name gitlab-runner --restart always -v /srv/gitlab-runner/config:/etc/gitlab-runner -v /var/run/docker.sock:/var/run/docker.sock gitlab/gitlab-runner:latest

docker logs gitlab-runner

docker restart gitlab-runner

Upgrade gitlab runner

sudo su -

docker stop gitlab-runner && docker rm gitlab-runner

docker pull gitlab/gitlab-runner

docker run -d --name gitlab-runner --restart always -v /srv/gitlab-runner/config:/etc/gitlab-runner -v /var/run/docker.sock:/var/run/docker.sock gitlab/gitlab-runner:latest

docker logs gitlab-runner

docker restart gitlab-runner

Fix the docker address pools conflict with internal network IP

docker network inspect bridge

vi /etc/docker/daemon.json

systemctl restart docker.service

docker network inspect bridge

{

  "registry-mirrors": ["https://mirror.ccs.tencentyun.com", "http://hub-mirror.c.163.com"],

  "default-address-pools":

  [

    {"base":"10.200.100.0/16","size":24}

  ]

}

Clean docker cache

wget https://gitlab.com/gitlab-org/gitlab-runner/-/raw/main/packaging/root/usr/share/gitlab-runner/clear-docker-cache

chmod +x clear-docker-cache

./clear-docker-cache

Further info

Install Rails Stack for Ubuntu 20.04

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Install nginx

sudo su -

cd /etc/apt/sources.list.d/

vi nginx.list

apt update

And paste the source:

nginx.list
deb https://nginx.org/packages/ubuntu/ focal nginx

deb-src https://nginx.org/packages/ubuntu/ focal nginx

And public keys:

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys ABF5BD827BD9BF62

apt update

apt-get install nginx

systemctl start nginx

systemctl enable nginx

It’s also possible to enable TLS 1.1/1.2 due to Ubuntu 20.04 not support by default.

/etc/nginx/nginx.conf
ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3;

# seclevel for TLS 1.0 and 1.1

ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH:@SECLEVEL=1";

Install node.js 16 and yarn 1.x

Using nodesource distribution

curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -

sudo apt-get install gcc g++ make git

sudo apt-get install -y nodejs

## To install the Yarn package manager

curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | gpg --dearmor | sudo tee /usr/share/keyrings/yarnkey.gpg >/dev/null

echo "deb [signed-by=/usr/share/keyrings/yarnkey.gpg] https://dl.yarnpkg.com/debian stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

sudo apt-get update && sudo apt-get install yarn

Install rbenv

sudo su - # as root

apt update

apt install build-essential libgdbm-dev libncurses-dev libreadline-dev libssl-dev libyaml-dev zlib1g-dev

logout # as ubuntu

# git clone https://github.com/rbenv/rbenv.git ~/.rbenv

git clone https://gitee.com/Eric-Guo/rbenv.git ~/.rbenv

echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc

echo 'eval "$(rbenv init -)"' >> ~/.bashrc

source ~/.bashrc

type rbenv

# git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build

git clone https://gitee.com/Eric-Guo/ruby-build.git "$(rbenv root)"/plugins/ruby-build

# git clone https://github.com/andorchen/rbenv-china-mirror.git "$(rbenv root)"/plugins/rbenv-china-mirror

git clone https://gitee.com/Eric-Guo/rbenv-china-mirror.git "$(rbenv root)"/plugins/rbenv-china-mirror

rbenv install -l

Install ruby 3.0.3

rbenv install 3.0.3

rbenv global 3.0.3

echo "gem: --no-document" > ~/.gemrc

rbenv shell 3.0.3

gem update --system

gem install bundler

gem install bundler --default

gem install bundler

Install postgresql

apt-get install postgresql

apt-get install postgresql-server-dev-all

sudo su - postgres

createuser ubuntu

psql

ALTER ROLE ubuntu LOGIN;

CREATE DATABASE wefocusin_production WITH ENCODING='UTF8' OWNER=ubuntu;

logout

psql -d wefocusin_production -f wefocusin_production.sql

Install certbot

sudo apt install snapd

sudo snap install core

sudo snap refresh core

sudo snap install --classic certbot

sudo ln -s /snap/bin/certbot /usr/bin/certbot

sudo certbot --nginx

Using Podman-docker in Tlinux - TencentOS Version 3.1

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Notice gitlab still need using real docker instead of podman-docker and below is only record as a testing purpose and failed, detail see gitlab issue 27119.

sudo yum install podman-docker

sudo mv /etc/containers/registries.conf /etc/containers/registries.conf.orig

docker run --rm -t -i gitlab/gitlab-runner --help

sudo mkdir -p /srv/gitlab-runner/config

docker run --rm -it -v /srv/gitlab-runner/config:/etc/gitlab-runner gitlab/gitlab-runner register

docker run --rm -it -v /srv/gitlab-runner/config:/etc/gitlab-runner gitlab/gitlab-runner verify
/etc/containers/registries.conf
unqualified-search-registries = ["docker.io"]

 
[[registry]]

prefix = "docker.io"

insecure = false

blocked = false

location = "docker.io"

[[registry.mirror]]

location = "hub-mirror.c.163.com"

[[registry.mirror]]

location = "registry.docker-cn.com"