baybatu

Run shell in a container without running entrypoint script set by the image build

docker run -it --entrypoint sh IMAGE_NAME

Sources

• https://stackoverflow.com/a/44769468
• https://docs.docker.com/engine/reference/run/#entrypoint-default-command-to-execute-at-runtime

baybatu

Bash commands connected using pipe(|) are not executed correctly in kubectl exec.

Example:

kubectl exec -ti <POD> -- pg_dump -h localhost -t my_table | psql -d <TARGET_DB> -h localhost

Here I want to run the pg_dump command first and redirect the output to the psql command as input using pipe(|). But kubectl takes commands only until pipe character, pg_dump in my case and psql has been run on host machine instead of inside the <POD>. The solution is to wrap all commands using double quote(") and run these commands using bash -c.

baybatu

alternative resource: http://turion64.cf/modplay/mods/KEYGENMUSiC%20MusicPack/

Title	File Name
greasy duck v1	AT4RE - Cool Rm to Mp3 Wav crk.mod
Spyware Firewall 2.0 crk.xm	BugZ - Spyware Firewall 2.0 crk.xm
010 Editor 2.0 kg.xm	Cafe - 010 Editor 2.0 kg.xm
2 Be With You	CiB - Shokecake Games All Product crk.it
pullover	DYNASTY - Autobahn Total - Die Ve

baybatu

# create exchange
curl -i -u guest:guest -H "content-type:application/json" \
    -XPUT -d'{"type":"fanout","durable":true}' \
    http://localhost:15672/api/exchanges/%2f/my.exchange.name
    
# create queue
curl -i -u guest:guest -H "content-type:application/json" \
    -XPUT -d'{"durable":true,"arguments":{"x-dead-letter-exchange":"", "x-dead-letter-routing-key": "my.queue.dead-letter"}}' \
    http://localhost:15672/api/queues/%2f/my.queue

baybatu

sudo tcpdump -Q pid=PID -k

baybatu

def limit(num, minimum=1, maximum=255):
  """Limits input 'num' between minimum and maximum values.
  Default minimum value is 1 and maximum value is 255."""
  return max(min(num, maximum), minimum)

baybatu

kubectl get svc --all-namespaces  -o go-template="{{range .items}}{{range.spec.ports}}{{if .nodePort}}{{.nodePort}}{{printf \"\n\"}}{{end}}{{end}}{{end}}" | sort

baybatu

package com.example;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class CompleteableFutureWithExceptionHandling {

    public static void main(String[] args) {

baybatu

on macOS

default folder in /Users/USERNAME/Library/Preferences/DataGrip2018.1/projects contains database connection properties.

DataGrip2018.1 states your DataGrip version

baybatu

The following stacktrace can occur on a spring-boot app. Consider changing the scope of dependencies that use groovy runtime as test.

{"@timestamp":"2022-11-03T12:32:33.865+03:00","@version":"1","message":"Application run failed","logger_name":"org.springframework.boot.SpringApplication","thread_name":"main","level":"ERROR","level_value":40000,"stack_trace":"java.lang.NoClassDefFoundError: Could not initialize class org.codehaus.groovy.reflection.ReflectionCache
    at org.codehaus.groovy.runtime.dgmimpl.NumberNumberMetaMethod.<clinit>(NumberNumberMetaMethod.java:33)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)