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GeekCity

GeekCity

diff -r live/ evil/

blog
source code for this blog
Commands
Commands
a set of commands for shell, java, git and so on
Qemu
Qemu
QEMU is a generic and open source machine & userspace emulator and virtualizer
Linux
Linux
Linux is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released by Linus Torvalds
Docker
Docker
Docker is a set of platform as a service (PaaS) products that use OS-level virtualization to deliver software in packages called containers
Kubernetes
Kubernetes
Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications
Data-Lake
Data-Lake
A data lake is a centralized repository that allows you to store all your structured and unstructured data at any scale
about me
about me
chart-museum

prepare

  1. k8s is ready
  2. argocd is ready and logged in
  3. ingress is ready
  4. cert-manager is ready
    • the clusterissuer named self-signed-ca-issuer is ready
  5. minio is ready
ben.wangzAbout 1 min
intro

Wang Zhi

  • email: ben.wangz@foxmail.com
  • blog: https://blog.geekcity.tech

Summary

  • experienced Java developer with 8+ years of expertise in designing and implementing scalable data processing platforms.
  • proficient in Apache Flink, Kubernetes, and handling large volumes of data.
  • proven ability to lead teams and deliver high-performance systems.
  • achieved developing data processing platforms for various companies, including Alibaba Group, ZhejiangLab and tianrang-inc.
ben.wangzAbout 3 min
commands

what

  • record some useful commands
ben.wangzLess than 1 minutecommandslinuxshelltool
git

init global config

git config --global user.name "ben.wangz"
git config --global user.email ben.wangz@foxmail.com
git config --global pager.branch false
git config --global pull.ff only
git --no-pager diff
ben.wangzLess than 1 minute
java

show gc info

jstat -gcutil $pid 1000 100
ben.wangzLess than 1 minute
k8s

completion for bash

source<(kubectl completionbash)

port forwarding

ben.wangzLess than 1 minute
mac

install rosetta for apple m1 chip

/usr/sbin/softwareupdate --install-rosetta --agree-to-license

mac chrome access https with self-signed certificate

just type thisisunsafe after open the website

ben.wangzLess than 1 minute
mysql

show transaction info

select 
    trx_id, 
    trx_started, 
    trx_wait_started, 
    trx_mysql_thread_id, 
    trx_query, 
    trx_operation_state, 
    trx_tables_locked 
from information_schema.INNODB_TRX;
ben.wangzLess than 1 minute