chenchun

#!/bin/bash

set -e
set -u
#set -x

SSH_KEY="05:8b:8f:f5:09:35:ae:61:a9:3b:21:ea:1c:36:bf:0c"
USER_DATA_FILE="$(dirname $0)/vps.userdata"

### sub functions

chenchun

https://stackoverflow.com/questions/34477547/how-to-combine-the-sequence-of-objects-in-jq-into-one-object

{
  "a": "green",
  "b": "white"
}
{
  "a": "red",
  "c": "purple"

chenchun

With powerful named capture groups replace, we can quickly add swagger annotations based on comment

find: (?<title1>\/\*\*\n     \* (?<title>.*)\n     \*/$)
replace: ${title1}\n    @ApiModelProperty(notes = "${title}")

Before

chenchun

https://chromium.googlesource.com/chromiumos/platform/crosvm

build with minijail

https://www.collabora.com/news-and-blog/blog/2017/11/09/quick-hack-experiments-with-crosvm/

Build kernel(optional)

You can also bypass this and use installed ubuntu kernel image on your ubuntu.

chenchun

set smarttab
set tabstop=4
set shiftwidth=4
set autoindent
set smartindent
set encoding=utf-8 fileencodings=ucs-bom,utf-8,cp936

chenchun

// ~/.config/Code/User/settings.json
{
    "workbench.colorTheme": "Quiet Light",
    "window.title": "${activeEditorMedium}",
    "clang.executable": "/usr/bin/clang-6.0",
    "http.proxy": "http://example.com:8080",
    "http.proxyStrictSSL": false,
    "workbench.editor.enablePreview": false,
    "go.inferGopath": true,
    "go.toolsEnvVars": {"GOOS" : "linux"},

chenchun

https://ai.google/research/pubs/pub44824 https://simpleyyt.com/2017/07/05/introduction-to-google-maglev/

• router ECMP
• LB-RS GRE
• Direct Server Return(DSR), send VIP->client IP to router, bypass LB
• bypass kernel, DPDK
• session affinity, consistent hashing

Ucloud vortex http://www.infoq.com/cn/articles/Maglev-Vortex

chenchun

• GoBGP is just a bgp daemon and itself does not contain any functionality to modify routing table
• If you like to use GoBGP as a component of software router and do packet forwarding, you need to implement that
• There are two options to achieve FIB manipulation with GoBGP
  • Use built-in zebra integration
  • Write your own code using gRPC API

chenchun

https://kubernetes.io/zh/docs/concepts/workloads/pods/pod-topology-spread-constraints/

https://kubernetes.io/blog/2020/05/introducing-podtopologyspread/

chenchun

[root@tbds-100-88-65-29 /data/gaia/docker]# sqlite3 linkgraph.db 
SQLite version 3.7.17 2013-05-20 00:56:22
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite> .databases
seq  name             file                                                      
---  ---------------  ----------------------------------------------------------
0    main             /data/gaia/docker/linkgraph.db                            
sqlite> .tables