# 自签 CA
> 参考 https://2heng.xin/2018/12/16/your-own-ca-with-openssl/ 并修改部分参数
```
#!/bin/bash
openssl genrsa -out cakey.pem 2048
cat << EOF > root.conf
[ req ]
default_bits = 2048
default_keyfile
蚂蚁的容器方案运行在内部超过上万台生产服务器上，还包括蚂蚁金融云对外部客户的输出。我们会以提升CPU利用率，最大化利用服务器资源为目标，开展在线/实时/离线三类业务混合部署的规模化推广，并支撑pouch相关容器技术在蚂蚁金服的落地。我们还同时承担基于容器平台的存储技术方案的研究，开发，落地等相关工作。
### 岗位描述
1. 基于阿里集团已有的大规模分布式存储能力，研发蚂蚁金服金融级文件系
# 需求
主要是希望学生在上完课程之后老师可以在 App 上登记一下，然后后台自动发送短信给学生家长
## 需求概览
1. 学生信息录入
2. 课程信息录入
3. 学生课程录入
4. 学生消费课程记
5. 短信模板管理
## 详细需求
TBD
# 提名图书统计
陶哲轩实分析（第3版）
http://www.ituring.com.cn/book/1822
陶哲轩教你学数学
http://www.ituring.com.cn/book/2049
数学分析八讲（修订版）
http://www.ituring.com.cn/book/1622
Spark高级数据分析（第2版）
http://www.ituring.com.cn/bo
Repost from [https://codeburst.io/javascript-es-2017-learn-async-await-by-example-48acc58bad65](https://codeburst.io/javascript-es-2017-learn-async-await-by-example-48acc58bad65)
> Async/Await expla
# 生成自签CA以及证书
## 1. 生成X509格式的CA自签名证书
```
openssl req -new -x509 -keyout ca.key -out ca.crt
# 去除密码
openssl rsa -in ca.key -out ca.key
```
## 2. 生成服务端的私钥(key文件)及csr文件
```
openssl genrsa -des3 -out s
Sequence
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Created with Raphaël 2.1.0 Alice Alice Bob Bob Hello Bob, how are you? Bob thinks I am good thanks! Please refer here for syntax explanation.
Flowchart
It is powered by flowchart.js , which would turn following code block into rendered diagrams:
Created with Raphaël 2.1.0 Start Your Operation Yes or No? End yes no
Mermaid
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## Emoji
`:cn:` `:smile:` `:100:` `:v:`
You can find more Emoji from [https://afeld.github.io/emoji-css/](https://afeld.github.io/emoji-css/)
## Block-level Custom Containers
::: success
:tada:
The unexported variables
unexport/i.go
package unexport var i int func init () { i = 2 }
The new variables points the unexported variables
main.go
package main import ( "fmt" _ "unsafe" _ "unexport" ) //go:linkname I unexport.i var I int func main () { fmt . Println ( I ) }
package main import ( "fmt" "github.com/alangpierce/go-forceexport" ) func main () { var timeNow func () ( int64 , int32 ) err := forceexport . GetFunc (& timeNow , "time.now" ) if err != nil { // Handle errors if you care about name possibly being invalid. fmt . Println ( err ) } // Calls the actual time.now function. sec , nsec := timeNow () fmt . Printf ( "%v %v" , sec , nsec ) }
