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How to select Spring boot profile from maven?

1. Define following profiles in pom.xml

<profiles>
   <profile>
        <id>dev</id>
        <properties>
            <activatedProperties>dev</activatedProperties>
        </properties>
        <activation>

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How to add Bootstrap 4.x to Angular Project?

1. Bootstrap 4.x depends on jQuery and popper.js . So, install them first

$ sudo npm install jquery
$ sudo npm install popper.js

2. Install Bootstrap and Font-Awesome dependencies to project using following command

npm install bootstrap font-awesome 

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1. Download Elastic Search and unzip it
2. Start Elastic search with the following command and go to URL http://localhost:9200

$ bin/elasticsearch

3. Download LogStash and unzip it
4. Create logstash-elk.conf file on logstash home directory with the following content and change the log file location and index name based on your settings

input {
 file {

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See Confluent Registry for more information about this

Schema Files:

Customer.avsc

{"namespace": "com.kafkastream.model",
  "type": "record",

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FYI: Created blog post with more details

How to fix ".gitignore not working" issue?

Sometimes git does not exclude files/folders added .gitignore especially if you had commited them before. Here is how to fix it. I am ignoring node_modules from Angular project as an example

1. Update .gitignore with the folder/file name you want to ignore. You can use anyone of the formats mentioned below (prefer format1)

### Format1  ###
node_modules/

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Configure Spring Boot Application to serve Custom Static Resource locations

Static resources can be configured using two approaches in Spring Boot

• Add custom path in application.properties/application.yaml
• Implement WebMvcConfigurer addResourceHandlers() method

First configure your SpringSecurity class to accept requests to this resources

@Override
public void configure(WebSecurity web)

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Maven Install Directions on macOS

$ brew update
$ brew install maven

Check version

$mvn -v

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Create NIC and assign IP Address

VBoxManage hostonlyif create

VBoxManage hostonlyif ipconfig vboxnet0 --ip 192.168.56.1 --netmask 255.255.255.0

Remove NIC from VM

VBoxManage hostonlyif remove

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MySQL Change password on Ubuntu when default password not provided

1. Open terminal and tyfollowing commands one by one. Do not close the terminal after you are done

sudo mysql
USE mysql;
UPDATE user SET authentication_string=PASSWORD('YOUR_PASSWORD') WHERE User='root';
UPDATE user SET plugin="mysql_native_password";
FLUSH PRIVILEGES;
quit;

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Create Windows bootable drive on macOS

1. Download Windows ISO (Windows 7 or latest) from Official Windows store
2. Once download finished, double click on ISO image. Mac will mount this ISO images in Volumes.
3. Skip to step 5 if you like command line options. Open 'Disk Utility' application, select your USB device under 'external' category. Look for field Device and copy that value (ex. disk4)
4. Right click on your device and select Erase then use following information to fill popup window

Name => WINDOWS10
Format => MS-DOS (FAT)
Scheme => GUID Partition Map