Category: Ubuntu

In today’s developing world and big data ecosystem, MySQL has become one of the most well-known technologies and is one of the most popular databases in many industries. If you want to master this database, you only need a basic understanding. MYSQL can be used on various Linux distributions and one of these distros is Ubuntu. Here, we will be going to show the best way to install MYSQL on Ubuntu 22.04. Keep studying carefully.

How to Install MySQL on Ubuntu 22.04

MySQL is an open-source database management system that is usually installed as a part of the popular LAMP stack. As you learn how to install MySQL, you will have a working relational database to build your next website or application. Now, follow the instructions step-by-step to install MySQL on Ubuntu Linux VPS.

Prerequisites to Install MySQL

To install MySQL you will need the following requirements:

• A Linux VPS with Ubuntu OS.
• A non-root administrative user
• A firewall configured with UFW

Installing MySQL on Ubuntu

To start the installation process, first of all, you should update the system repository. Press CTRL+ALT+T to open a terminal on Ubuntu. Now run the command below to update the system repository:

sudo apt update

Now you can run the following command to install MySQL on your system:

sudo apt-get install mysql-server

You need a few minutes to complete the installation and continue.

Note that you can verify MySQL status using the following command:

 systemctl is-active MySQL

The installation was straightforward and simple. So you can configure it on your system.

Configuring MySQL on Ubuntu

If you want to perform an initial and interactive configuration of your MySQL server, you can execute the command line below:

sudo mysql_secure_installation

At the beginning of the configuration step, you will be asked to set the level for the password validation policy. So, according to your validation requirements, choose a number from the menu in front of you.

Now enter the new password for root and press Y to continue the process with your new password:

Finally, do the rest of the configuration section accordingly:

Login to MySQL on Ubuntu

Now, create a native password for the root by logging into the MySQL server and setting the default authentication method to “mysql_native_password”:

 sudo MySQL

Now you will see a query that sets the root password to “Password123#@!” and determines the authentication method to “mysql_native_password“:

ALTER USER 'root'@'localhost'
IDENTIFIED WITH mysql_native_password BY 'Password123#@!';

To be able to apply the changes without restarting the MySQL service, you can reload the grant table in the MySQL database:

FLUSH PRIVILEGES;

Now, you can login to the MySQL server with your new password and enjoy the server.

Now that you have installed MySQL successfully, you can ensure MySQL service is active and running with the following command:

systemctl status mysql.service

That’s it! Login to MySQL and use this great database as you wish.

Troubleshooting Some Common Issues of MySQL on Ubuntu

Like any software, it can encounter various issues. Here are some common issues with MySQL on Ubuntu and their potential solutions:

1- You cannot connect to the MySQL server.

Solutions:

• Ensure that MySQL is running: sudo service mysql status.
• Check if MySQL is bound to the correct IP address and port.
• Check for firewall rules blocking MySQL connections.

2- You’ve forgotten the MySQL root password.

Solutions:

Stop MySQL:

sudo service mysql stop.

Start MySQL in safe mode:

sudo mysqld_safe --skip-grant-tables.

Connect to MySQL:

mysql -u root.

Change the root password:

UPDATE mysql.user SET authentication_string = PASSWORD('new_password') WHERE User = 'root'; FLUSH PRIVILEGES;.

Stop MySQL safe mode:

sudo service mysql stop.

3- Your MySQL database is corrupted.

Solutions:

• Create a backup of your data.
• Try repairing the database: mysqlcheck -r -u username -p dbname.
• If the repair fails, restore from the backup.

4- Running out of disk space can cause MySQL to stop working.

Solutions:

• Identify and delete unnecessary data or log files.
• Resize your server or storage volume.

5- MySQL fails to start

Solutions:

• Check the MySQL error log for the cause of the failure.
• Ensure no other services are using the MySQL port.
• Repair or reinstall MySQL if necessary.

Conclusion

As mentioned, MySQL is a popular database. In this article, we examined how to install it in Ubuntu and explained to you from updating the repositories to configuring and running it. So that you can enter the MySQL server by setting a new password and using it. We hope that the above information is useful for you. Happy coding!

We live in a data-driven world and these data should be organized and easily accessible information. This leads to the need for a database. The database is the structured data or information that is organized and stored in a computer for fast searching and retrieval. The purpose of this guide is to introduce MongoDB and examine why MongoDB is the best NoSQL database for Ubuntu. Read the article carefully to understand the benefits of this great database.

What is MongoDB?

We can use two main types of databases: SQL (relational) and NoSQL (non-relational). MongoDB is a non-relational database system. It is a non-relational database system. This database is flexible and is now used as backup information storage for many prominent businesses and organizations such as Forbes and Facebook. If we want to compare two databases, it should be said that relational databases store data in columns and rows. Organizations such as Oracle use a relational database management system (RDBMS). However, NoSQL databases store schema-less and unstructured data inside multiple collections and nodes. Non-relational databases do not require static tables, scale horizontally, and support bounded join queries. If you need to set up a virtual server, we recommend you use the Linux VPS server plans provided on our website.

MongoDB Database for Ubuntu

Benefits of using MongoDB

MongoDB has lots of features that we will introduce most important ones:

– It is easier and cheaper to maintain the Nosql database. Also, NoSQL databases have features such as easier data distribution, automatic repair, and simpler data models. All these benefits require lower administrative costs and thus lower costs.

– This database is open-source, so include lower server costs. NoSQL databases like MongoDB use cheaper servers, which means that the price of storing and processing data per gig is significantly lower.

– MongoDB is highly scalable and easy to use. Because NoSQL databases like MongoDB scale horizontally, you are able to scale by adding more machines to your resources.

– MongoDB has an integrated cache system. System cache improves data output performance.

– There are no scheme problems for MongoDB. It means you can put data into a NoSQL database without a predefined schema, so you are able to change data models and formats without any disruption in applications.

– MongoDB offers many useful features (Ad-hoc queries, aggregates, bounded aggregates, file storage, indexing, load balancing, replication, and server-side JavaScript execution), so we can say it is user-friendly.

Features of MongoDB

In this section, you can find out 5 most important features of the MongoDB database:

– Scalability: vertical and horizontal scaling is supported by MongoDB.

– MongoDB keeps and stores data in documents using key-value pairs instead of rows and columns, which makes the data more flexible.

– MongoDB performs load balancing through vertical or horizontal scaling, without a separate or dedicated load balancer.

– There is no need for a blueprint for managing data cause MongoDB is a schema-less database.

– High availability is provided in MongoDB because two or more MongoDB instances are used, so it is replicable.

MongoDB vs. other NoSQL databases

We mentioned before that MongoDB is a type of NoSQL. It is an open-source and user-friendly software written in C++ that makes it fast and flexible. The main difference between NoSQL and MongoDB is that NoSQL is a tool that you can store and retrieve data in a non-relational database while MongoDB is actually document-oriented and belongs to NoSQL.

NoSQL is the abbreviation of “not only SQL” or “no SQL”. which is called We have different types of NoSQL databases like documents, key-value, graphs, etc. and MongoDB is a type of NoSQL. As a result, MongoDB is easy to use and free. It is scalable and has high performance. On the other hand, NoSQL databases have distributed architecture and help increase data consistency.

MongoDB and Ubuntu compatibility

MongoDB and Ubuntu have been widely compatible, which seems to continue in later versions. It is a popular NoSQL database, and Ubuntu is a widely used Linux distribution. Both are well-supported platforms with active communities, making it relatively straightforward to run MongoDB on Ubuntu.

To check the compatibility with the latest versions available in 2023, I recommend consulting the official documentation and release notes for MongoDB and Ubuntu. The official websites for MongoDB and Ubuntu will provide you with the most up-to-date information on system requirements and compatibility.

Setting up MongoDB on Ubuntu

MongoDB and Ubuntu have been widely compatible, which seems to continue in later versions. MongoDB is a popular NoSQL database, and Ubuntu is a widely used Linux distribution. Both are well-supported platforms with active communities, making it relatively straightforward to run MongoDB on Ubuntu. To check the compatibility with the latest versions available in 2023, it is recommended to consult the official documentation and release notes for MongoDB and Ubuntu. The official websites for MongoDB and Ubuntu will provide you with the most up-to-date information on system requirements and compatibility.

Key features of MongoDB for Ubuntu users

As told before, MongoDB is a popular NoSQL database that provides a flexible and great platform to manage and process large amounts of unstructured data. Here you will figure out some other features of MongoDB for Ubuntu users:

1- There is no need for predefined schema. MongoDB can store any type of data so users have flexibility to create fields in a document.

2- A good feature of using documents is that they map to native data types in various programming languages. Also, embedded documents reduce the need for database joins.

3- Mongodb is a useful database for companies with big data applications because horizontal scalability is its main function.

4- Various storage engines are supported by MongoDB and it provides pluggable storage engine APIs to let third parties develop their own storage engines.

5- One of the most impressive features of DBMS is the built-in aggregation that allows the user to run MapReduce code directly on the database. MongoDB also has its own file system called GridFS. The advantage of using a file system is to save files larger than the limit of 16 MB per document.

Best practices for using MongoDB on Ubuntu

Here, we will show some of the best practices for using MariaDB on Ubuntu:

– By default, MongoDB allows access without authentication, which can be a security risk. Always enable authentication and create strong passwords for users with appropriate privileges. This can help protect your data from unauthorized access.

– Configure your firewall to restrict access to the MongoDB server. Limit access to only the necessary IP addresses or ranges, and block public access if not required.

– Keep an eye on your MongoDB server’s performance. Use tools like MongoDB’s built-in profiler and third-party monitoring tools to identify performance bottlenecks and optimize your queries and indexes accordingly.

– Implement a backup strategy to prevent data loss. MongoDB provides various backup methods, such as mongodump or replica sets. Choose the one that suits your needs and schedule regular backups.

– Query performance can be improved by properly designed indexes. Analyze your queries and create lists of frequently used fields in queries to speed up data retrieval.

– High availability and data redundancy is provided by replica sets. They ensure that your data is replicated across multiple servers and prevent data loss in case of hardware failure.

– Journaling helps ensure data consistency in the event of a system failure. It is recommended to enable journaling in the MongoDB configuration.

– Updating large documents in MongoDB, can lead to fragmentation. Instead, consider using the “$set” operator to change specific fields in the document.

– Connection pooling helps manage the number of open connections to the MongoDB server, optimizing resource usage and improving performance.

– It is recommended to use the official MongoDB repository. This ensures that you get the latest stable version and updates.

Conclusion

Many organizations use MongoDB for their customer service applications. This applicable database is an open-source and document-oriented tool to save your data. Our tutorial is a good guide to give a brilliant comprehension of MongoDB structure and helps you get more information about its benefits and features on the Ubuntu operating system. Also, some points to compare this database and its relation to NoSQL were examined for a better result. Finally, if you have any questions, leave a comment here.

FAQ

Today we want to talk about one of the relational applications, the RabbitMQ message broker, which plays an important role in providing reliable and stable communication. The task of these programs is to store received requests in a queue and provide them one by one to receive services. So, make your services more scalable by decoupling them. Let’s figure out how to install RabbitMQ server on Ubuntu.

Understanding the Ubuntu Operating System

Ubuntu is a well-known Linux-based distribution. It is free and open-source and can be widely used on a computer and system or virtual private server (VPS). One of the significant features of Ubuntu is the use of Gnome, which is a graphical user interface. The Ubuntu Canonical maintenance center is a community of developers. It is updated every six months and its support is two years. This operating system contains most of the applications like LibreOffice, Thunderbird, and some other simple games. 

If you want to add additional applications, you can install them using the APT package management system or Ubuntu software. This package is the default app store for Ubuntu. 

Preparing the Ubuntu Environment for RabbitMQ Installation

Here are the requirements before you start the installation:

– A Linux VPS with the Ubuntu operating system

– A user account with sudo privileges

– Python 3 with pip package installed

Installing RabbitMQ on Ubuntu

Now you can start the installation steps of RabbitMQ on Ubuntu. The first step is to install the related prerequisites:  

apt-get install curl gnupg apt-transport-https -y

The next step is to add a repository that is not available by default, so add signing keys and a related repository:

curl -1sLf "https://keys.openpgp.org/vks/v1/by-fingerprint/0A9AF2115F4687BD29803A206B73A36E6026DFCA" | sudo gpg --dearmor | sudo tee /usr/share/keyrings/com.rabbitmq.team.gpg > /dev/null

curl -1sLf "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xf77f1eda57ebb1cc" | sudo gpg --dearmor | sudo tee /usr/share/keyrings/net.launchpad.ppa.rabbitmq.erlang.gpg > /dev/null

curl -1sLf "https://packagecloud.io/rabbitmq/rabbitmq-server/gpgkey" | sudo gpg --dearmor | sudo tee /usr/share/keyrings/io.packagecloud.rabbitmq.gpg > /dev/null

Tip: Make a new file at /etc/apt/sources.list.d/rabbitmq.list directory and add the repositories for ErLang and RabbitMQ that are proper for Ubuntu 22.04 jammy release:

deb [signed-by=/usr/share/keyrings/net.launchpad.ppa.rabbitmq.erlang.gpg] http://ppa.launchpad.net/rabbitmq/rabbitmq-erlang/ubuntu jammy main

deb-src [signed-by=/usr/share/keyrings/net.launchpad.ppa.rabbitmq.erlang.gpg] http://ppa.launchpad.net/rabbitmq/rabbitmq-erlang/ubuntu jammy main

deb [signed-by=/usr/share/keyrings/io.packagecloud.rabbitmq.gpg] https://packagecloud.io/rabbitmq/rabbitmq-server/ubuntu/ jammy main

deb-src [signed-by=/usr/share/keyrings/io.packagecloud.rabbitmq.gpg] https://packagecloud.io/rabbitmq/rabbitmq-server/ubuntu/ jammy main

Now update the package list for the second time after saving the file:

apt-get update -y

Go on installing ErLang packages:

apt-get install -y erlang-base \

As the final part, you can install the RabbitMQ server and other dependencies:

apt-get install rabbitmq-server -y --fix-missing

As you passed all of the levels well, you can see the RabbitMQ server process is working correctly: 

systemctl status rabbitmq-server

That’s it. You finished the installation part.

Configuring RabbitMQ for optimal performance

A Management Console plugin has been implemented in RabbitMQ that allows you to perform various management and monitoring tasks through a web-based interface. So if you need to check the list of all RabbitMQ plugins, run the following command:

rabbitmq-plugins list

You will see that all the plugins are disabled. Use the command below to enable them:

rabbitmq-plugins enable rabbitmq_management 

Managing RabbitMQ Server on Ubuntu

Now it is time to setup and manage RbbitMQ on your system. 

The first step is connecting to the RabbitMQ web interface. You should open the web browser and type the related URL which is http://your-server-ip:15672:

Install RabbitMQ Server on Ubuntu

The default username and password are guest, but you are allowed to choose any other user. If you forget or don’t know your IP address, type the following command:

hostname -I

The next step is to setup an administrative user. It would be beneficial if you create a new user and assign administrative permissions to it as you want to setup a RabbitMQ server. Choose a unique username and set a reliable password:

Tip: Our preferred administrator username is Thewhiterabbit.

rabbitmqctl add_user thewhiterabbit MyS3cur3Passwor_d

Now use the command below to set a tag for your user:

rabbitmqctl set_user_tags rabbitadmin administrator

It is good to delete the default user because of security reasons:

rabbitmqctl delete_user guest

To check the list of users, you can also this command:

rabbitmqctl list_users

In the next part, you should create RabbitMQ virtual host. A virtual host is suitable for providing logical grouping and separating different resources.  These resources include connections, exchanges, user permissions, and other objects. So run the command below to add a new virtual host:

rabbitmqctl add_vhost neuronvm_broker

You can do many configuration settings on a virtual host. These settings can be the maximum number of queues or the maximum number of concurrent client connections. Run the command below to list the available virtual hosts:

rabbitmqctl list_vhosts

It is good to delete the default virtual host:

rabbitmqctl delete_vhost /

To assign user permissions on your virtual host, you should adjust specific user permissions for the administrative user on the virtual host. Use the following command:

sudo rabbitmqctl set_permissions -p <virtual_host> <user_name> <permissions>

Then to have full permissions execute the following command:

sudo rabbitmqctl set_permissions -p cherry_broker thebigrabbit ".*" ".*" ".*"

To see the permissions go through this way:

sudo rabbitmqctl list_permissions -p neuronvm_broker

After all these instructions, it is time to setup RabbitMQ by web management console. To connect to the management console and insert your newly created username and password:

Install RabbitMQ Server on Ubuntu

After the authentication process, you can see the dashboard:

Install RabbitMQ Server on Ubuntu

Integrating RabbitMQ with Other Applications

If you want to add messaging functionality to your system, the best way is to integrate RabbitMQ with other applications in Ubuntu. This allows different programs to communicate with each other in a scalable and flexible way. Note that to make this action possible you need a library that supports AMQP and the most common one is Pika for Python applications. So to install Pika go through this command:

You have to be sure that you have the appropriate package manager:

sudo apt-get install python-pip git-core

Now install Pika:

pip install pika

You should find the appropriate library or client for the other programming languages.

Troubleshooting Common RabbitMQ Installation Issues

When you decide to install the RabbitMQ server, you may encounter some problems. In this section, we will mention some of them for you:

– Connection Problems: 

If you have any trouble connecting to RabbitMQ from clients, you should ensure that the client application uses the correct credentials, port, hostname, and virtual host settings.

By checking the listener configuration in the RabbitMQ configuration file, note that the RabbitMQ server is listening on the correct interface and port.

– Your plugins are not loading:

Use sudo rabbitmq-plugins enable <plugin_name>. to verify that you have enabled the plugins correctly. 

If you have problems with plugin loading, Check the RabbitMQ Logs.

Best Practices for RabbitMQ Server Management on Ubuntu

Here are the best practices to ensure optimized performance, reliability, and security:

– Regularly back up your RabbitMQ data, including configurations and message data, to facilitate recovery in case of data loss or system failure.

– Configure the firewall to allow only necessary ports to be accessible from external sources. By default, RabbitMQ listens on port 5672 for AMQP and 15672 for the management interface. Restrict access to these ports as needed.

– Always keep your Ubuntu system up to date with the latest security patches and updates. Run sudo apt update followed by sudo apt upgrade to update all packages, including RabbitMQ.

– For high availability and fault tolerance, consider setting up RabbitMQ clustering with multiple nodes. This way, if one node goes down, the others can continue to handle messages.

– Instead of using the Ubuntu default repositories, use the official RabbitMQ repository for the latest stable versions. This ensures you get the most recent updates and features.

– Change default credentials for the RabbitMQ management interface. Create a new administrative user with a strong password and configure RabbitMQ to use it. Remove or disable the default guest user to minimize security risks.

– RabbitMQ can be resource-intensive, especially when handling large amounts of data. Ensure your server has enough CPU, memory, and disk space to handle the expected workload.

– Configure resource and connection limits in RabbitMQ configuration files to prevent resource exhaustion and potential denial-of-service attacks.

– Implement monitoring tools to keep track of RabbitMQ performance and identify potential issues proactively. Enable logging to record important events for troubleshooting purposes

Conclusion

This tutorial presented to introduces RabbitMQ and presents a comprehensive guide about this message broker and the installation process, configuration, and management of RabbitMQ on the Ubuntu operating system. Also, you learned what can be useful practices to optimize the performance of this tool. For any additional information, you can refer to the RabbitMQ official page.  

FAQ

PGP is used to encrypt and decrypt data. Methods such as hashing, public key encryption, and data compression are used in PGP encryption. In the continuation of this comprehensive article, you will learn how to Encrypt and Decrypt with PGP on Ubuntu 20.04. Therefore, we recommend that you stay with us until the end.

Introduction to PGP

GPG or GnuPG, which is a free PGP-based signature and encryption software, uses it to export and import public and private keys, and to encrypt and decrypt data. GPG key pairs include two types of keys: private and public keys. Use the public key to encrypt the data, and the encrypted data will be decrypted using the recipient’s secret or private key.

Prerequisites

The process of encrypting and decrypting files with PGP involves a few simple steps. First, the sender must issue your public key and send it to the recipient. Second, the receiver enters the public key into its key. The recipient can then encrypt any file using the sender’s public key. Also, the recipient decrypts the shared file using his private key.

To start at the beginning Create two pairs of GPG keys for the purpose of display for two people in two separate systems (Linda and Dominique). Now, issue the public key and then enter it into another system.

We also recommend you use Linux VPS server plans available on our website to Encrypt and Decrypt with PGP on Ubuntu 20.04.

Encrypt and Decrypt with PGP on Ubuntu 20.04

How to Export Public Key with GPG

Before sending your public key to a reporter, you must first issue it using the GPG command. In the GPG command, an additional argument is specified to identify the public key that will be the user ID, and the “-a” or “-armor” option is added to generate the output of the export file in ASCII format. In the “GPG” command. To export a specific public key, first list the GPG keys generated on the system and select the key you want to export.

To do this, use the following “GPG” command:

gpg --list-keys

For example, to issue the public key “Linda“, note the “uid” user ID from the list:

Now add the “-export” option to the GPG command to export the “Linda” public key. Here, the “-a” option is used to create an ASCII display of the public key, and the redirect operator “>” is used to redirect the output of the GPG command to the “public.key” file:

gpg --export -a Linda > public.key

The “.key” extension indicates that there is encrypted content inside the specified file.

If the output is error-free, it declares that the “public.key” file is ready for export. To check its content, run the following “cat” command:

cat public.key

“public.key” saves the ASCII display of Linda’s public key as follows:

#####

In this step, you created the “public.key” file that contains the ASCII display of the public key “Linda”. Now, share the file with another system user so that the “new user” can enter the GPG key into their key.

How to Enter a Public Key with GPG

With the GPG command, inserting a public key into a key is simply exporting them. Decrypt incoming encrypted files, documents, or emails by entering the sender’s public key. Before entering “public.key”, list the keys in the new user key:

gpg --list-keys

“Neuronvm” now has a pair of GPG keys for “Dominique” uid, which can be seen in the following output:

To enter Linda’s “public.key”, run the “gpg” command with the “–import” option:

gpg --import public.key

The following output indicates that the public key “Linda” has been entered correctly:

List the “Neuronvm” public key to confirm the specified operation:

gpg --list-public-keys

The successfully entered Linda public key can be seen in the image below:

How to Edit the key trust Value with GPG

After entering Linda’s public key into the “Neuronvm” key, enter the amount of trust that is unknown at this point:

gpg --list-keys

Enter the following GPG command to edit Linda’s public key trust value:

gpg --edit-key linda public.key

Type “trust” and hit “Enter” to check the trust menu options:

gpg> trust

Then enter “5” to make sure you “finally” trust Linda’s public key:

Exit GPG edit by typing “quit” and pressing “Enter“:

gpg> quit

Now list the “gpg” keys again and check the trust value of the “linda” key:

gpg --list-keys

How To Encrypt Files with GPG 

In the “Neuronvm” system there is a file called “encryptfile1.txt” which is encrypted with the public gpg key of Linda. Before moving on to the encryption procedure, check the content in the specified file:

To encrypt a file using the gpg command, enter the following command:

gpg -e -u [Sender_uid] -r [Receiver_uid] [Filename]

The “-u” option is now used to specify the sender uid and the “-r” option for the receiver. The secret key of the sender and the public key of the receiver is used to encrypt the file. Now enter the following command to encrypt “encryptfile1.txt” with the individual secret key and Linda’s public key:

gpg -e -u Dominique-r linda encryptfile1.txt

If the output is error-free, it means that an encrypted file has been successfully registered. To confirm this step, browse the contents of the current directory:

ls

The following output indicates that “encrypt file1.txt.gpg” was created for the file of your choice:

Check the contents of “encryptfile1.txt.gpg” by running the “cat” command:

cat encryptfile1.txt.gpg

The encrypted content “encryptfile1.txt.gpg” in the terminal is shown as follows:

Share the encrypted file with the recipient via email or another method.

How To Decrypt Files with GPG

The “-d” option is added to the “gpg” command to decrypt the encrypted file. Share “encryptfile1.txt.gpg” with the “Neuronvm” user who owns the Linda GPG key pair. Now to decrypt the received file, type the following command:

gpg -d encryptfile1.txt.gpg

You are prompted to enter “Passphrase” to unlock Linda’s secret key. Enter the password in the input field and click the “OK” button:

After entering the correct password, the specified file is decrypted and its contents are displayed in the terminal as follows:

Conclusion

PGP encryption is used by companies to exchange data such as files, documents, and emails over the Internet. Also, Protects important information from being misused through email attacks. Public and private GPG keys are used to encrypt and decrypt files. Without the GPG key, no one can decrypt the data. In this tutorial, you learned how to encrypt and decrypt with PGP on Ubuntu 20.04. We hope you find this tutorial useful. Share your comments with us via the form below.

FAQ

OpenSSH is the premier connection tool for remote login with SSH protocol. If you follow us until the end of this article, you will learn the steps to install and enable OpenSSH on Ubuntu 22.04.

Introduction To OpenSSH

OpenSSH encrypts all traffic and eliminates eavesdropping, hijacking, and other attacks. It also provides a large set of secure tunneling capabilities, multiple authentication methods, and sophisticated configuration options. The OpenSSH suite consists of remote operation tools using ssh, scp, and sftp. It also includes key management with ssh-add, ssh-keysign, ssh-keyscan and ssh-keygen.

Prerequisites

First, before starting the OpenSSH installation process, you should have a Linux VPS with Ubuntu 22.04. Then, open Ubuntu 22.04 terminal by pressing CTRL+ALT+T then confirm that your system is updated.

How to Install OpenSSH on Ubuntu 22.04

Use the following command to update the repository list:

sudo apt update

sudo apt upgrade

Now install the SSH Server package using the following apt command:

sudo apt install openssh-server

sudo apt install openssh-client

How To Enable OpenSSH on Ubuntu 22.04

At this point, the SSH server service should start automatically, check the status of the SSH server service by running the following commands:

sudo systemctl start ssh

sudo systemctl enable ssh

Now in this step confirm that OpenSSH is working correctly and there are no problems with the help of the following systemctl command:

sudo systemctl status ssh

How To Connect SSH Server on Ubuntu 22.04

After the installation of OpenSSH is complete, once it is in working mode, now connect to another remote system, computer, or server. However, you must ensure that OpenSSH is installed and enabled on the remote system. Before connecting to the server, have the internal/external IP address or hostname or username of the account you want to connect. Then run the following command:

ssh username@ip-address/hostname

How To Disable OpenSSH on Ubuntu 22.04

If you don’t want to use OpenSSH, use the following command to disable it for security purposes so that you don’t get detected by malicious bots:

sudo systemctl disable ssh –now

Conclusion

In this article, you have learned how to Install and enable OpenSSH on Ubuntu 22.04. Now after enabling OpenSSH, you can connect to other devices that have OpenSSH installed and enabled on their systems. We hope this educational article was useful for you. Share your comments with us through the form below.