Roy - DEV Community

1 min read

Roy

Aug 26 '22

cheat command

#linux #command

1 min read

Roy

Aug 24 '22

压测nginx出现no live upstreams while connecting to upstream的问题分析

#nginx

1 min read

Roy

Aug 19 '22

yaml indentation

#yaml

1 min read

Roy

Aug 3 '22

Local taskbar visible during remote desktop fullscreen

#troubleshootin #windows

1 min read

Roy

Aug 3 '22

Why does the dot command (source) not work on files without path in zsh?

#zsh

5

1 min read

Roy

Jul 11 '22

nginx upstream failover

#nginx

1 min read

Roy

Jul 7 '22

nginx, consul, mysql high availability

#nginx #consul #mysql

1 min read

Roy

Jul 6 '22

abrt-watch-log

1 min read

Roy

Jun 29 '22

get available memory in gb using single bash shell command

#tips #command

5

1 min read

Roy

Jun 29 '22

get the number of cpus

#tips #command #linux

1 min read

Roy

May 12 '22

How to match digits in sed?

#sed #regex

1 min read

Roy

May 11 '22

新创建的虚拟机网络异常

#troubleshooting

1 min read

Roy

Apr 21 '22

use PowerShell to list listener

#powershell

1 min read

Roy

Apr 19 '22

X Forward depend on xauth executable binary on the server side

#ssh #linux

1 min read

Roy

Mar 31 '22

Answer: Regex to match string containing two names in any order

1 min read

Roy

Mar 7 '22

Answer: SQLPLUS error:ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATA

1 min read

Roy

Dec 21 '21

反向代理替换response body中的字符串

#nginx

1 min read

Roy

Nov 22 '21

change case sensitive setting in less command

#linux #cli

1 min read

Roy

Nov 18 '21

ansible inventory plugin: host_list

#ansible

1 min read

Roy

Nov 17 '21

How to check MySQL Config files

#mysql

1 min read

Roy

Nov 11 '21

server returned error on SASL authentication step: Authentication failed

#mongodb

1 min read

Roy

Nov 8 '21

Nginx - rewrite or return for redirection?

#nginx

1 min read

Roy

Nov 1 '21

The attempted operation is not supported for the type of object referenced

#wsl

1 min read

Roy

Oct 21 '21

Windows behaves as if the left shift key is stuck

#windows #troubleshooting

1 min read

Roy

Oct 15 '21

Valid file extensions for ansible inventory

#ansible

1 min read

Roy

Oct 11 '21

vsphere esxi 使用

#vmware

1 min read

Roy

Sep 28 '21

Answer: Kubernetes Pod stuck in CrashLoopBackOff

#kubernetes

1 min read

Roy

Sep 24 '21

docker 重启失败

#docker

1 min read

Roy

Sep 23 '21

/etc/security/limits.

#linux

1 min read

Roy

Sep 10 '21

bash 函数 return 1 是表示执行失败

#shell

1 min read

Roy

Sep 10 '21

quote in ssh bash -c

#linux #ssh #troubleshoooting

1 min read

Roy

Sep 9 '21

Why do the md5 hashes of two tarballs of the same file differ?

#linux

1 min read

Roy

Sep 8 '21

kubectl -ojsonpath

#k8s

1 min read

Roy

Sep 3 '21

解决 Kubernetes 中 Kubelet 组件报 failed to get cgroup 错误

#k8s

1 min read

Roy

Sep 3 '21

Answer: how to run kubelet as docker container

#k8s #container

1 min read

Roy

Sep 2 '21

the associated storage asset still exists when the pv is deleted

#k8s

1 min read

Roy

Sep 1 '21

Galera Cluster Recovery

#mariadb #galera

1 min read

Roy

Aug 30 '21

Answer: How to see docker image contents

#docker

1 min read

Roy

Aug 28 '21

windows hosts file do not support inline comments

#windows #troubleshooting

1 min read

Roy

Aug 24 '21

Answer: What is the difference between the random.choices() and random.sample() functions?

#python

1 min read

Roy

Aug 24 '21

Answer: Set specific DNS server using dns.resolver (pythondns)

#python #dns

1 min read

Roy

Aug 24 '21

Answer: How to copy Docker images from one host to another without using a repository

#docker

1 min read

Roy

Aug 18 '21

I was misguided by the network policy of the office when I try to determine whether the target port of target server is open

#troubleshooting

1 min read

Roy

Aug 17 '21

Answer: Grep in MySQL CLI interpretter

1 min read

Roy

Aug 5 '21

add worker label to worker node in k8s

#k8s

1 min read

Roy

Aug 5 '21

忘了添加允许外网访问的 firewall rule 导致的问题

#troubleshoooting

1 min read

Roy

Aug 3 '21

beawre the place where you put ssh include directive after

#ssh #troubleshooting

1 min read

Roy

Jul 23 '21

ansible lineinfile 中 regexp 如果匹配多行，只会修改其中一行

#ansible

1 min read

Roy

Jul 22 '21

ssh login to the wrong machine

#ssh #troubleshooting

1

1 min read

Roy

Jul 13 '21

ansible create empty file if it does not exist

#ansible

1 min read

Roy

Jul 13 '21

auto start cron in wsl2

#wsl2

1 min read

Roy

Jul 12 '21

the value of ansible_hostname is not fixed after the fact gathering

#ansible