wsl2 ubuntu install golang

Table of contents

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golang imports wsl code

Open a new project and keep loading go list -m json all

Debug prompts that gcc does not exist, install GCC on Ubuntu 20.04

environment variable disappears

Red bread in the editor

#Give permissions first

#Delete the ./idea file when selecting a project

abnormal

Mysql sql model 报错 which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mod e=only_full_group_by"

complete solution

Redis踩坑——MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on

---

Why do you choose to install golang independently? My local environment is wsl2+ubuntu+idea. If you want to debug directly through the local virtual machine, you cannot install golang in dokcer

download

wget https://golang.google.cn/dl/go1.18.7.linux-amd64.tar.gz

tar -C /usr/local -xzf go1.18.7.linux-amd64.tar.gz

vim /etc/profile
export PATH=$PATH:/usr/local/go/bin
export GOPATH=/home/go
export GOBIN=$GOPATH/bin
#保存
source /etc/profile

export GO111MODULE=on
export GOPROXY='https://goproxy.io'
export GOPROXY=https://mirrors.aliyun.com/goproxy/

golang imports wsl code

Open a new project and keep loading go list -m json all

Stillnnnnnnn

Remember to open an agent

Debug prompts that gcc does not exist, install GCC on Ubuntu 20.04

The default Ubuntu software repositories contain a package group named "build-essential", which contains the GNU Editor Collection, GNU Debugger, and other development libraries and tools necessary to compile software. To install the development tools package, run the following command as a user with sudo privileges or as root:

sudo apt update

sudo apt install build-essential

This command will install a series of packages, including gcc, g++, and make. You may also want to install the manual on how to develop with GNU/Linux.

sudo apt-get install manpages-dev

Verify that the GCC compiler is successfully installed by running the following command to print the GCC version.

gcc --version

The default version numbers of GCC available in the Ubuntu 20.04 software sources are 9.3.0:

gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

environment variable disappears

#注意查看env环境变量里面的路劲

sudo vim ~/.profile
export GOROOT="/usr/local/go"
export GOBIN=$GOROOT/bin
export GOPATH="/home/go"
export PATH=$PATH:$GOPATH/bin


sudo vim ~/.bashrc
#添加 
export GOROOT="/usr/local/go"
export GOBIN=$GOROOT/bin
export GOPATH="/home/go"
export PATH=$PATH:$GOPATH/bin
#保存
source ~/.bashrc

Red bread in the editor

#Give permissions first

#因为你的用个人账户开,比如我的账户test,遇到事情先给权限
sudo chown -R test:test-R /home

#Delete the ./idea file when selecting a project

abnormal

Mysql sql model 报错 which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mod e=only_full_group_by"

SELECT @@sql_mode; set @@global.sql_mode ='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';

complete solution

1. Enter mysql: docker exec -ti 14ea13dd0cf8 /bin/bash

2. Enter password: mysql -uroot -p

3. 查看sql_model：SELECT version(),@@SESSION.sql_mode,@@GLOBAL.sql_mode;

At this time, ONLY_FULL_GROUP_BY was found

1. Execute the following script:

mysql -uroot -p

SET SESSION sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';
SET GLOBAL sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION';

#查询sql model
SELECT version(),@@SESSION.sql_mode,@@GLOBAL.sql_mode;

1. Looking at sql_model at this time: SELECT version(), @@SESSION.sql_mode, @@GLOBAL.sql_mode;

2. Restart the project to dokcer restart mysql

Redis踩坑——MISCONF Redis is configured to save RDB snapshots, but is currently not able to persist on

cannot be completely resolved

root@ubuntu:/usr/local/redis/bin# ./redis-cli
127.0.0.1:6379> config set stop-writes-on-bgsave-error no

solve it completely

vim /etc/sysctl.conf 
'vm.overcommit_memory = 1' 
#然后重启
将vm.overcommit_memory改为1有什么作用呢，网上看到一个博客是如下解释，我个人也比较同意

0 — 默认设置。个人理解：当应用进程尝试申请内存时，内核会做一个检测。内核将检查是否有足够的可用内存供应用进程使用；如果有足够的可用内存，内存申请允许；否则，内存申请失败，并把错误返回给应用进程。举个例子，比如1G的机器，A进程已经使用了500M，当有另外进程尝试malloc 500M的内存时，内核就会进行check，发现超出剩余可用内存，就会提示失败。
1 — 对于内存的申请请求，内核不会做任何check，直到物理内存用完，触发OOM杀用户态进程。同样是上面的例子，1G的机器，A进程500M，B进程尝试malloc 500M，会成功，但是一旦kernel发现内存使用率接近1个G(内核有策略)，就触发OOM，杀掉一些用户态的进程(有策略的杀)。
2 — 当 请求申请的内存 >= SWAP内存大小 + 物理内存 * N，则拒绝此次内存申请。解释下这个N：N是一个百分比，根据overcommit_ratio/100来确定，比如overcommit_ratio=50，那么N就是50%。