golang笔记之struct转map性能比较

一 21 九月 2020 | By honmaple | In Linux | 0f linux golang

package main

import (
    "encoding/json"
    "reflect"
    "testing"
)

type A struct {
    A string   `json:"a"`
    B string   `json:"b"`
    C int      `json:"c"`
    D int      `json:"d"`
    E []string `json:"e"`
    F []int    `json:"f"`
}

var a = &A{
    "string",
    "test",
    15,
    1024,
    []string{"vvv", "ssss", "44444"},
    []int{100, 4012},
}

func …

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golang笔记之interface类型判断性能

五 21 八月 2020 | By honmaple | In Linux | 0f linux golang

package main

import "testing"

type InterfaceA interface {
    AA()
}

type InterfaceB interface {
    BB()
}

type A struct {
    v int
}

func (a *A) AA() {
    a.v += 1
}

func BenchmarkTypeSwitch(b *testing.B) {
    var a = new(A)

    switchFunc := func(v interface{}) {
        switch v.(type) {
        case InterfaceA:
            v.(InterfaceA).AA()
        case InterfaceB:
            v.(InterfaceB …

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K8S笔记之私有仓库搭建

四 20 二月 2020 | By honmaple | In Linux | 0f linux k8s
Table of Contents
创建PV

搭建仓库

命名空间

https验证

用户名密码验证

创建service

创建ingress

测试Docker仓库

修改host

更新Docker证书

登陆仓库

测试上传与下载

FAQ

x509: certificate is valid for ingress.local, not registry.k8s.cloud

x509: certificate signed by unknown authority

413 Request Entity Too Large

参考资料
创建PV
关于PV的创建参考《K8S笔记之持久化存储》
```
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: docker-claim …
```
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KVM笔记之磁盘扩容

四 09 一月 2020 | By honmaple | In Linux | 0f linux kvm
Table of Contents
磁盘扩容

关闭KVM虚拟机

扩容磁盘

查看磁盘位置

查看磁盘信息

扩容磁盘大小

扩容虚拟机分区

启动虚拟机

查看磁盘大小和格式

扩容磁盘

DONELVM磁盘扩容

磁盘挂载

创建磁盘

挂载磁盘

挂载命令

卸载命令

格式化磁盘

格式化分区

格式化文件系统

挂载磁盘

FAQ

unexpected output in sfdisk --version

DOS partition table format cannot be used on drives for volumes larger than 2T

参考链接
磁盘扩容
关闭KVM虚拟机
```
virsh shutdown …
```
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KVM笔记之增量镜像

一 06 一月 2020 | By honmaple | In Linux | 0f linux kvm
Table of Contents
增量镜像

基础环境准备

创建增量镜像

创建KVM虚拟机

手动创建

使用virt-install创建

测试增量镜像

TODO快照与增量镜像

参考资料
增量镜像
增量镜像即保持一个基础的镜像不变，在此基础镜像上安装或修改相应的服务所创建的一个单独的镜像，增量镜像类似GIT，只记录当前KVM的修改记录，这样可以节省磁盘空间，快速复制虚拟机

基础环境准备
- KVM基础环境
- 基础镜像 ubuntu-base.qcow2
创建增量镜像
首先基于基础镜像 ubuntu-base.qcow2 创建一个增量镜像 ubuntu-test.qcow2
```
(宿主机) # qemu-img info /home/kvm/images/ubuntu-base.qcow2
image: ubuntu-base.qcow2
file format: qcow2
virtual size: 4 …
```
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macos初始化设置

日 28 七月 2019 | By honmaple | In Linux | 0f macos brew
Table of Contents
安装homebrew

切换中国源

恢复官方源

brew更新

macos使用深色菜单栏

安装powerline字体

禁止.DS_store生成

移动文件

复制文本到终端出现00~xxxx01~字符

查看监听端口
安装homebrew
- 安装命令行tools
  xcode-install
  curl >> brew_install
- 修改REPO地址
- 执行安装
  ruby brew_install
homebrew cask

使用git clone 中科大到指定目录

homebrew卸载依赖, 使用homebrew tap xxx/rmtree
```
brew rmtree emacs
```
App Store 安装 QQ,微信，网易云音乐 Brew cask 安装 git, google-chrome …
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elisp生成渐变XPM图片

五 12 七月 2019 | By honmaple | In Linux | 0f linux emacs elisp
Table of Contents
渐变颜色

生成XPM图片

效果显示
无意中看到 telephone-line有一种渐变颜色的效果，看起来很棒，但telephone-line的源码有些难懂，所以自己动手实现类似的效果

渐变颜色
渐变颜色的实现可使用color-gradient
```
(color-gradient
 '(0 0 0)
 (color-name-to-rgb "red") 10)
```
实现原理是对红(R)、绿(G)、蓝(B)三个颜色通道分别取 n + 2 个过渡值，n 为中间颜色过渡状态，所以对于red、#000、#a0a0a0等颜色需要转化为RGB色彩模式

生成XPM图片
XPM图片格式参考 https://en.wikipedia.org/wiki/X_PixMap …
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龟虽寿

六 15 六月 2019 | By honmaple | In Life | 0f life poem

龟虽寿，意犹千里可近，生死两忘。

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联想——一家中国的外国企业

一 27 五月 2019 | By honmaple | In Life | 0f life

美帝良心想

gAAAAABc65PsOXCd2_j79QXUtNz2n72liHR-ZOWSRvIREuixWlMozcF9zSrqqGa6rEMXQGXFPGvsc_F2_saDm2E9V4_hOt8Nbktp1qYgIsJ6lLOG2aKfbAhp9_HwVCXKc-sU7g7UF6Ks9zwDVKgtYlmMGO6M-uHFRu5gNZecAD55sIjfR7UVaSSrFMYMJTdfx_xPAvORiO6a6GK3rQB6VkOXJP6X1M6bF2IwxpaSAK7HJbOVPRCamn_dSAGEmgwbXqQqPhN8IzrR-ln9sZ85sWOWJdNVNkuEM2dLgM8hpW1N-LT9Uceeqpx3N4Y9KOmxA41zwg6zoxcZzV8G0oUqYhxBVnOvnv8y0T-40w60nA0qYtRuKzlViFwHCOaU5lVILIZ-cJXfO-HJh5VYCxawW9PK3hn1TsQ62l0pxmryRUvLFbmrEyxFIuYCmXC6Wb9J8HebEwR5yJBgo4WyjPNM3HIZDBjIujOoNSuTPJRMnHSDHnsIXmDfH3IbW3Eck0uRCCZRIHn15xBTDci5DovqiB0doQxjktUGRI-ExFwkLUkTL5-pzm0mKgmaYnY67SheSmkmTMG_ac0anpSljBjReNeNGbdz8vnw_JszvPO67lQAal4JFQtLst1nbcU9LC04tgAuosho26yAVrl262g4YEn5sxOCWD7w221_QdoRZ4Kxu81lk-PmRNP7gijzzb0rpxlZ-9JdN1l6yTexbnoHzRjk4LMNMWCrOjxLToHiMqYiveRmC8qEItQFclPUgiy226qgbsn58DBkbjoX3w9QtUTwV6U7VrmxjxFz6kl5XE5EA8-1OLRtSpc3sgIv5ZfcLzw0yMONhyu93rd-lnUMG2bp2jCvmiBqCzYyhFb5m_Hj9FSFfiyRLd7l1GcEHOp4X3_JQuwbUdNzyoFTyhvZKCRcdo6w4DzhUkUCDYVnmpI4xUohv2JHS537Pbeu9o2jK70vpgENCh7HlkQOmOtg8i_dUkph5i9J9cO8ffKiSoI60Suw7Su6sRCJZPzUGfHAufgwN6F5r8Pvk_lZDW8naSRpgTVXNegEgLaz2rQe7cBWv2iLQ56reK_qqi7d2rlGwvAK3dz7ULY2STB8sPSwFzNkZQqdUZH7OIYLT8T1fD5AWlM7AeqIfHoa6hVaES0E9OMETsEOlKQzpkYf0PqVb-aLfdiI31TkZsksKiwLzOU2sTE0vI4xv8882aoiibkoTKD5pUI7BxN1QDtR7MiunKBN3HgI_fNpB1p_WQTda8HL8HLPPGgbb30Sab4cAMHaFxWcqoqtvxcHDoib3MVJh0WkE1kLC_NHIdhwVMlVtAGijMkQMPOnH9jVlWoVN7T2Ik6XgRxWtB7djT1aq2agq2cXVo762hKU-2k2O2cNkFyh-ZsgJp8-NTQ1j6MYwZjfl5o8IQCRM0mRdc1oKSMvn-rCpL1q6Qyg3A5qde6Gjbr-lYEHl4-lec0LS7mdMn5jcpCATsm6llN4fRv_hBf4uA1iyz70JlrtBI0xIcvP2UAI9Jo081m6nVj3i24fynwKfnT7Od9VVBK3

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Table of Contents

创建PV

Table of Contents

磁盘扩容

关闭KVM虚拟机

Table of Contents

增量镜像

基础环境准备

创建增量镜像

Table of Contents

安装homebrew

Table of Contents

渐变颜色

生成XPM图片