NginX Proxy Manager is a free, open source, GUI for the NginX Reverse Pr...

Nextcloud Nginx Proxy Manager in 10 Minutes!

Nextcloud on Nginx Proxy Manager Network

##### nextcloud http with nginx network without exposing ports

### find nginx proxy manager ports with 

docker network ls

### attach to the network with

docker run -d \
  --name=nextcloud \
  --network=nginx_default \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -v /home/j/nextcloud/config:/config \
  -v /home/j/nextcloud/data:/data \
  --restart unless-stopped \
  lscr.io/linuxserver/nextcloud:latest

Nginx Proxy Manager on Raspberry Pi

### cmds

mkdir nginx

docker compose up -d


### docker-compose.yml

services:
  app:
    image: 'jc21/nginx-proxy-manager:latest'
    restart: unless-stopped
    ports:
      - '80:80'
      - '81:81'
      - '443:443'
    volumes:
      - ./data:/data
      - ./letsencrypt:/etc/letsencrypt

• https://nginxproxymanager.com/guide/#quick-setup 
• https://forums.raspberrypi.com/viewtopic.php?t=371485

Nextcloud on Docker

##### nextcloud https

docker run -d \
  --name=nextcloud \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -p 443:443 \
  -v /home/j/nextcloud/config:/config \
  -v /home/j/nextcloud/data:/data \
  --restart unless-stopped \
  lscr.io/linuxserver/nextcloud:latest
  
##### nextcloud http

docker run -d \
  --name=nextcloud \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -p 8080:80 \
  -v /home/j/nextcloud/config:/config \
  -v /home/j/nextcloud/data:/data \
  --restart unless-stopped \
  lscr.io/linuxserver/nextcloud:latest
  
##### nextcloud remove
 
docker rm -f 412f2933d1ec
sudo rm -Rf nextcloud/

Deactivate / Uninstall Flatpak - Linux Mint App Central

Check out the post here

Verify ISO

Download the iso and checksums (sha256sum.txt) and use the below commands to verify

CertUtil -hashfile linuxmint-22-mate-64bit.iso SHA256

grep 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX' ./sha256sum.txt

References :

• Verify iso steps

Roman Numerals in Java

package com.example.demo.utils.math;

import java.io.IOException;
import java.util.TreeMap;

public class RomanNumeral {

    private final static TreeMap map = new TreeMap();

    static {

        map.put(1000, "M");
        map.put(900, "CM");
        map.put(500, "D");
        map.put(400, "CD");
        map.put(100, "C");
        map.put(90, "XC");
        map.put(50, "L");
        map.put(40, "XL");
        map.put(10, "X");
        map.put(9, "IX");
        map.put(5, "V");
        map.put(4, "IV");
        map.put(1, "I");

    }

    public final static String toRoman(int number) {
        int l =  map.floorKey(number);
        if ( number == l ) {
            return map.get(number);
        }
        return map.get(l) + toRoman(number-l);
    }

    public static void main(String[] args) throws IOException {
        int v = 113;
        System.out.println("############################################");
        System.out.println("\t\t\t\t" + v + " = " + toRoman(v));
        System.out.println("############################################");
    }

}

References :

• RomanNumeral.java

List of Files in Java

################################## Example 2 ##################################

package com.example.demo.utils.scan;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

public class FileScanner {
    public static void main(String[] args) throws IOException {
        Files.write(
                Paths.get("C:\\Users\\j\\Documents\\out.csv"),
                getList(new File("C:\\").listFiles(), new StringBuffer()).toString().getBytes(),
                StandardOpenOption.TRUNCATE_EXISTING);
    }

    public static StringBuffer getList(File[] listOfFiles, StringBuffer sb) {
        if (listOfFiles != null)
            for (File i : listOfFiles)
                if (i.isFile()) {
                    sb.append("\"" + i.getPath() + "\"" + "," + "\"" 
                    + i.length() + "\"" + "," + "\"" + i.lastModified() + "\"" + "\n");
                    System.out.println(i.getName());
                } else if (i.isDirectory()) getList(new File(i.getPath()).listFiles(), sb);
        return sb;
    }
}


################################## Example 1 ##################################


package org.example;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

public class Main {
    public static void main(String[] args) throws IOException {
        String out = "C:\\Users\\j\\Documents\\out.txt";
        clearfile("", out);
        getList("C:\\");
        //writefile("in", "C:\\Users\\j\\Documents\\out.txt");
    }

    public static void getList(String path) throws IOException {
      //  System.out.println("Hello jeetu!");
        String out = "C:\\Users\\j\\Documents\\out.txt";
        File folder = new File(path);
        File[] listOfFiles = folder.listFiles();
        if (listOfFiles != null) {
            for (int i = 0; i < listOfFiles.length; i++) {
                if (listOfFiles[i].isFile()) {

                    long fileSizeInBytes = listOfFiles[i].length();
                    // Convert the bytes to Kilobytes (1 KB = 1024 Bytes)
                    //long fileSizeInKB = fileSizeInBytes / 1024;
                    // Convert the KB to MegaBytes (1 MB = 1024 KBytes)
                    //long fileSizeInMB = fileSizeInKB / 1024;

                   // System.out.println(listOfFiles[i].getName());
                    writefile(listOfFiles[i].getPath(), out);
                    writefile("," + fileSizeInBytes, out);
                    writefile("\n", out);

                    System.out.println(listOfFiles[i].getName() + ","  + fileSizeInBytes);

                } else if (listOfFiles[i].isDirectory()) {
                    //System.out.println("Directory " + listOfFiles[i].getName());
                    //System.out.println("Directory " + listOfFiles[i].getPath());
                    getList(listOfFiles[i].getPath());
                }
            }
        }
    }


    public static void writefile(String content, String path) throws IOException {


        Files.write(
                Paths.get(path),
                content.getBytes(),
                StandardOpenOption.APPEND);
    }

    public static void clearfile(String content, String path) throws IOException {


        Files.write(
                Paths.get(path),
                content.getBytes(),
                StandardOpenOption.TRUNCATE_EXISTING);
    }
}

References :

• FileScanner.java

Kafka on Docker

### KAFKA DEV NODE - with GUI
git clone https://github.com/jeethualex/kafka-development-node.git

cd kafka-development-node

docker compose up
# Check urls - http://localhost:3000/ 
# and http:/localhost:8080/ui/clusters/local/all-topics/demo/messages?limit=100&mode=LATEST

docker compose down



### BASIC KAFKA TESTS

docker run -d --name=kafka -p 9092:9092 apache/kafka
docker ps
## Start cluster
docker exec -ti kafka /opt/kafka/bin/kafka-cluster.sh cluster-id 
  --bootstrap-server :9092

docker ps

## Publich to topic - Crtl + C to exit
## Keep entering messages using enter
docker exec -ti kafka /opt/kafka/bin/kafka-console-producer.sh 
  --bootstrap-server :9092 --topic demo

## Consume from topic - Crtl + C to exit
## Open in new terminal
## Keep receiving messages
docker exec -ti kafka /opt/kafka/bin/kafka-console-consumer.sh 
  --bootstrap-server :9092 --topic demo --from-beginning

References :

• github.com/jeethualex/kafka-development-node
• Message Sender
• Messages
• docs.docker.com/guides/use-case/kafka