jupyter

May 8, 2019 · One min read

notebook

cat > config.json
{
  "NotebookApp": {
    "password": "argon2:$argon2id$v=19$m=10240,t=10,p=8$TvqWSGeQsqj2qsztGA7rmw$k0YNPHZM/u8V67dVVst9pw"
  }
}
pwd: 1~8
notebook --ip=0.0.0.0 --port=5000 --allow-root --config=./config.json
nohup jupyter notebook --ip=0.0.0.0 --port=5000 --allow-root --config=./config.json &
http://10.231.9.124:5000/tree

# 把 a.ipynb 提取出 a.py
jupyter nbconvert --to script a.ipynb
# 把 a.ipynb 提取出 a.html
jupyter nbconvert --to html a.ipynb

python

May 8, 2019 · One min read

python -m

cat b.json | python -m json.tool # json
python -m http.server 3333 # local file

pip加速

pip install tensorflow-gpu -i https://pypi.tuna.tsinghua.edu.cn/simple

mkdir ~/.pip
cat > ~/.pip/pip.conf << EOF
[global]
trusted-host=mirrors.aliyun.com
index-url=https://mirrors.aliyun.com/pypi/simple/
EOF

[global]
index-url=http://mirrors.cloud.aliyuncs.com/pypi/simple/

[install]
trusted-host=mirrors.cloud.aliyuncs.com

@deprecated

warnings.warn("弃用", DeprecationWarning)

venv

pip install virtualenv -i https://pypi.tuna.tsinghua.edu.cn/simple
virtualenv --no-site-packages venv

anaconda

conda create -n py39 python=3.9 anaconda

conda install pytorch torchvision torchaudio cudatoolkit=11.3 -c pytorch

opencv

OpenCV中文官方文档 http://www.woshicver.com/
使用Python+opencv进行图像处理(一) https://zhuanlan.zhihu.com/p/63429810

maven 配置

April 25, 2019 · One min read

加速 https://help.aliyun.com/document_detail/102512.html?spm=a2c40.aliyun_maven_repo.0.0.30be3054H2HWlh

<mirror>
    <id>aliyunmaven</id>
    <mirrorOf>*</mirrorOf>
    <name>阿里云公共仓库</name>
    <url>https://maven.aliyun.com/repository/public</url>
</mirror>

cd /Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/conf vi settings.xml

kubectl

March 23, 2019 · 2 min read

kubectl

备忘录 https://kubernetes.io/docs/reference/kubectl/cheatsheet/

export KUBECONFIG=~/Desktop/www/work-book/env/sandbox/1_kubernetes/kubeconfig

kubectl get pod -A

kubectl run hello-minikube --image=zx5435/go-fs:v1 --port=8080

kubectl delete -n default deployment hello-minikube

kubectl logs -f pod-gim-uat-app-2
kubectl logs --tail=50 -f pod-gim-uat-app-2

install

curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.16.0/bin/windows/amd64/kubectl.exe

config

namespace

kubectl config set-context --current --namespace=$(basename $PWD)
kubectl config set-context --current --namespace=ccm-perf
kubectl config set-context $(kubectl config current-context) --namespace=ccm-perf

run

kubectl run hello-minikube --image=zx5435/go-fs:v1 --port=8080

delete 批量

kubectl -nccm-uat get pod --field-selector=status.phase!=Running
kubectl -nccm-uat get pod --field-selector=status.phase==Failed

port-forward

# outside:inside 左外右内
kubectl -nzx5435 port-forward --address 0.0.0.0 service/air-ticket 7777:80

kubectl -nzx5435 expose deployment air-ticket --type=LoadBalancer --name=my-service

configmap

kubectl -nccm-perf create configmap mq-conf --from-file=activemq

kustomize

kubectl builtins

# kustomization.yaml
# k apply -k config/
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
generatorOptions:
# disableNameSuffixHash: true
labels:
  type: generated
annotations:
  note: generated
configMapGenerator:
- name: gim-fs
  files:
    - pii.yml
    - activemq.xml
    - broker.ks
- name: ept-env
  literals:
    - ACTIVEMQ_PASSWORD=admin

install

# install
curl -s "https://raw.githubusercontent.com/kubernetes-sigs/kustomize/master/hack/install_kustomize.sh"  | bash

kustomize build | kubectl apply -f -

config tpl

# kustomization.yaml
namespace: gimc-prod
generatorOptions:
  # disableNameSuffixHash: true
  labels:
    type: generated
  annotations:
    note: generated
configMapGenerator:
  - name: gimc-cfgs
    files:
      - pii.yml
  - name: ept-env
    literals:
      - MYSQL_DB_NAME=gimc-prod
secretGenerator:
  - name: gimc-https
    files:
      - tls.key
      - tls.crt

tomcat

March 18, 2019 · One min read

安装 https://blog.csdn.net/sun8112133/article/details/79944531

使用 apt-get 命令 安装后的 tomcat 7的目录结构说明
/etc/tomcat8 ：全局配置
/usr/share/tomcat8/ ：程序主目录
/usr/share/tomcat8/conf/Catalina/localhost/ ：本机部署的 Catalina 配置
/var/lib/tomcat8/ ：工作主目录
/var/lib/tomcat8/webapps ：应用文件实际存放于此
/var/lib/tomcat8/work ：动态工作目录（动态编译的 .jsp 存放于此）

docker

# 把war放当前目录,会自动解压缩
docker run -it --rm -p 8888:8080 -v $PWD:/usr/local/tomcat/webapps tomcat:8.5.39-jre8-alpine

tar.gz install https://www.jb51.net/article/143185.htm

wget http://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-9/v9.0.17/bin/apache-tomcat-9.0.17.tar.gz
tar -zxvf apache-tomcat-9.0.17.tar.gz

jetty

wget https://repo1.maven.org/maven2/org/eclipse/jetty/jetty-distribution/9.4.16.v20190411/jetty-distribution-9.4.16.v20190411.tar.gz
tar -zxvf jetty-distribution-9.4.16.v20190411.tar.gz

自建dns bind

February 13, 2019 · 2 min read

yum -y install bind bind-utils

service named start

vi /etc/named.conf 修改any

service named restart

netstat -antlpe | grep named

# 验证配置文件是否有错误
named-checkzone test.com /var/named/test.com.zone

本地配置 dns

vi /etc/resolv.conf

# Generated by NetworkManager
nameserver 172.16.30.28
nameserver 202.96.202.5
nameserver 114.114.114.114

cd /var/named/ cp -p named.localhost named.inner

demo hk.com

$TTL 1D
@   IN SOA  dns.hk.com. root.hk.com. (
                    0   ; serial
                    1H  ; refresh
                    1H  ; retry
                    1H  ; expire
                    1H )    ; minimum
        NS  dns.hk.com.
dns     A   172.16.30.11
www     A   172.16.30.22
news    A   172.16.30.33

vi /var/named/named.inner

$TTL 1D
@   IN SOA @ root.inner.test.tianshengcm.com. (
                    0   ; serial
                    1H  ; refresh
                    1H  ; retry
                    1H  ; expire
                    1H )    ; minimum
        IN NS   @
        IN A    172.16.30.28
@       IN A    172.16.30.28
ynh-app IN A    172.16.30.28
ynh-rcm IN A    172.16.30.28
ynh-cs  IN A    172.16.30.28
fhh-app IN A    172.16.30.28
fhh-rcm IN A    172.16.30.28
fhh-cs  IN A    172.16.30.28
*       IN A    172.16.30.28

追加 vi /etc/named.rfc1912.zones

zone "hk.com" IN {
        type master;
        file "hk.com";
        allow-update { none; };
};
zone "inner.test.tianshengcm.com" IN {
        type master;
        file "named.inner";
        allow-update { none; };
};

dig inner.test.tianshengcm.com

抓包工具

January 12, 2019 · One min read

mitmproxy
charles
fiddler
zan-proxy https://youzan.github.io/zan-proxy/book/
http toolkit

抓包 mitmproxy

doc

https://zhuanlan.zhihu.com/p/23931921

? 进入帮助
按z清空请求列表
按用j，k或者上下方向键在列表上浏览
按回车进入详情界面
按q，返回列表界面
按tab键或者h，l，在Request，Response，Detail三个tab之间切换。按j，k或者上下方向键可以滚动查看详情
按G跳到最新一个请求
按g跳到第一个请求
按d删除当前选中的请求，按D恢复刚才删除的请求

install

brew install mitmproxy

https

safari http://mitm.it iPhone => 关于本机 => 证书信任设置

view_filter

https://docs.mitmproxy.org/stable/concepts-filters/

~d regex Domain ~d regex baidu ~d xdq ~b bank_name

react

January 7, 2019 · One min read

编写简洁漂亮，可维护的 React 应用 https://github.com/shimohq/react-cookbook

前言
组件声明
计算属性
事件回调命名
组件化优于多层 render
状态上移优于公共方法
容器组件
纯函数的 render
始终声明 PropTypes
Props 非空检测
使用 Props 初始化
classnames

rabbitmq

December 28, 2018 · One min read

rabbitmq

docker pull rabbitmq:3.7.8

docker run -d --name rabbitmq-1 rabbitmq:3.7.8

docker run -d --name rabbitmq -p 5671:5671 -p 5672:5672 -p 4368:4368 -p 25672:25672 -p 15671:15671 -p 15672:15672 rabbitmq:management

docker run -d -p 5672:5672 -p 15672:15672 --name rabbitmq rabbitmq:3.7.8-management
http://0.0.0.0:15672
guest/guest

demo

<?php

namespace app\console\controllers;

use PhpAmqpLib\Connection\AMQPStreamConnection;
use PhpAmqpLib\Message\AMQPMessage;
use yii\console\Controller;

class QueueController extends Controller
{

    public function actionIn($n = 1)
    {
        $connection = new AMQPStreamConnection('172.16.30.123', 5672, 'guest', 'guest');
        $channel    = $connection->channel();

        // if not exist
        $channel->queue_declare('hello', false, false, false, false);

        $msg = 'hello_' . date('H_i_s');
        $msg = new AMQPMessage($msg);
        $channel->basic_publish($msg, '', 'hello');

        echo "Send: {$msg->body}\n";
        $channel->close();
        $connection->close();
    }

    public function actionExec()
    {
        $connection = new AMQPStreamConnection('172.16.30.123', 5672, 'guest', 'guest');
        $channel    = $connection->channel();

        // if not exist
        $channel->queue_declare('hello', false, false, false, false);

        echo "Start\n";
        $callback = function ($msg) use ($channel) {
            /** @var AMQPMessage $msg */
            echo "Get: {$msg->body}\n";

            // ack
            $delivery_tag = $msg->delivery_info['delivery_tag'];
            $channel->basic_ack($delivery_tag);
        };

        $channel->basic_consume('hello', '', false, false, false, false, $callback);

        while (count($channel->callbacks)) {
            $channel->wait();
        }
    }

}

java 基础

December 24, 2018 · 2 min read

docker image

# https://github.com/graalvm/container/pkgs/container/graalvm-ce
# ghcr.io/graalvm/$IMAGE_NAME[:][$os_version][-$java_version][-$version][-$build_number]
docker pull ghcr.io/graalvm/jdk:ol8-java17-22

docker tag ghcr.io/graalvm/jdk:ol8-java17-22 wolanx/java:jdk17-graalvm22
docker push wolanx/java:jdk17-graalvm22

docker tag ghcr.io/graalvm/jdk:ol8-java17-22 wolanx/java:latest
docker push wolanx/java:latest

doc

多线程编程完全指南-系列 https://zhuanlan.zhihu.com/p/70325764

面试题

2018年BATJ面试题精选 https://www.itcodemonkey.com/article/13260.html
死磕面试：2019最全Java面试题 https://blog.csdn.net/crazymakercircle/article/details/82555359
Java 最常见 200+ 面试题全解析：面试必备 https://gitchat.csdn.net/activity/5c6cf6044bb44360f3370255
2018年最新Java面试题及答案整理 https://blog.csdn.net/qq_41701956/article/details/80250226
2019年最新Java面试题及答案整理（上） https://blog.csdn.net/qq_41701956/article/details/86686492
2019年最新Java面试题及答案整理（下） https://blog.csdn.net/qq_41701956/article/details/86699263
这30个我精选的含答案的面试题 https://mp.weixin.qq.com/s/1SMQTkR88lyzazEQOdW34g

优化 jvm

这 17 个 JVM 参数，高级 Java 必须掌握！https://mp.weixin.qq.com/s/HYT49JD38f6iIpyVFWmH-Q

spring

快速开发一个自定义 Spring Boot Starter https://mp.weixin.qq.com/s?__biz=MzUxOTc4NjEyMw==&mid=2247484379&idx=1&sn=351a7f669a1b1314520d8f5455fb7ade
深入理解 Spring 中的各种注解，总有一个你不懂的？ https://mp.weixin.qq.com/s/7Qo-zbUb-_l3WwmFNYBB2g
看完这个不会配置 logback ，请你吃瓜！https://juejin.im/post/5b51f85c5188251af91a7525

db

SpringBoot 中 JPA 的使用 https://www.jianshu.com/p/c14640b63653
手写一个Jedis以及JedisPool https://mp.weixin.qq.com/s/4RjyyYVU95I7R7v9MKutEA
深入理解 Spring 之 SpringBoot 事务原理 https://blog.csdn.net/qq_38182963/article/details/78891044

jmap 分析

字段详细解释 https://www.cnblogs.com/kongzhongqijing/articles/3621163.html
jmap -heap 1
jmap -dump:file=jmap.dump 1
jmap -dump:format=b,file=jmap.hprof 1
tar -zcvf a.tar.gz jmap.hprof
k cp dep-monitor-center-577f76bb89-xjfwg:/a.tar.gz a.tar.gz
https://www.eclipse.org/mat/

java基础

常用命令

# .java => .class
javac HelloWorld.java

# 运行 .class
java HelloWorld
java -classpath /www/demo HelloWorld

# .class => .jar
jar -cvf hello.jar Hello.class
# 运行 jar
java -jar 1.jar

# .jar => .exe
javaFX

# .jar => folder
jar xvf etp-cs-i18n.jar

decode

.class => .java
java -jar ~/Desktop/app/fernflower/build/libs/fernflower.jar classes src/main/java-temp

notebook​

python -m​

pip加速​

@deprecated​

venv​

anaconda​

opencv​

kubectl​

install​

config​

namespace​

run​

delete 批量​

port-forward​

configmap​

kustomize​

kubectl builtins​

install​

config tpl​

docker​

tar.gz install https://www.jb51.net/article/143185.htm​

jetty

本地配置 dns

demo hk.com

vi /var/named/named.inner

追加 vi /etc/named.rfc1912.zones

抓包 mitmproxy

doc​

install​

https​

view_filter​

rabbitmq​

demo​

docker image​

doc​

面试题​

优化 jvm​

spring​

db​

jmap 分析​

java基础​

常用命令​

decode​

notebook

python -m

pip加速

@deprecated

venv

anaconda

opencv

kubectl

install

config

namespace

run

delete 批量

port-forward

configmap

kustomize

kubectl builtins

install

config tpl

docker

tar.gz install https://www.jb51.net/article/143185.htm

doc

install

https

view_filter

rabbitmq

demo

docker image

doc

面试题

优化 jvm

spring

db

jmap 分析

java基础

常用命令

decode