Quick start

Create a local cluster on a single host

The local cluster setup on a single host is intended for development and learning. For production deployment, performance benchmarking, or deploying a true multi-node on multi-host setup, see Deploy YugabyteDB.

Install YugabyteDB

Installing YugabyteDB involves completing prerequisites and downloading the packaged database.

Prerequisites

Before installing YugabyteDB, ensure that you have the following available:

macOS 10.12 or later.
Python 3. To check the version, execute the following command:
```
python --version
```
```
Python 3.7.3
```
wget or curl.

Note that the following instructions use the wget command to download files. If you prefer to use curl (included in macOS), you can replace wget with curl -O.

To install wget on your Mac, you can run the following command if you use Homebrew:
```
brew install wget
```

Set file limits

Because each tablet maps to its own file, you can create a very large number of files in the current shell by experimenting with several hundred tables and several tablets per table. Execute the following command to ensure that the limit is set to a large number:

launchctl limit

It is recommended to have at least the following soft and hard limits:

maxproc     2500        2500
maxfiles    1048576     1048576

Edit /etc/sysctl.conf, if it exists, to include the following:

kern.maxfiles=1048576
kern.maxproc=2500
kern.maxprocperuid=2500
kern.maxfilesperproc=1048576

If this file does not exist, create the following two files:

/Library/LaunchDaemons/limit.maxfiles.plist and insert the following:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>Label</key>
      <string>limit.maxfiles</string>
    <key>ProgramArguments</key>
      <array>
        <string>launchctl</string>
        <string>limit</string>
        <string>maxfiles</string>
        <string>1048576</string>
        <string>1048576</string>
      </array>
    <key>RunAtLoad</key>
      <true/>
    <key>ServiceIPC</key>
      <false/>
  </dict>
</plist>

/Library/LaunchDaemons/limit.maxproc.plist and insert the following:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>Label</key>
      <string>limit.maxproc</string>
    <key>ProgramArguments</key>
      <array>
        <string>launchctl</string>
        <string>limit</string>
        <string>maxproc</string>
        <string>2500</string>
        <string>2500</string>
      </array>
    <key>RunAtLoad</key>
      <true/>
    <key>ServiceIPC</key>
      <false/>
  </dict>
</plist>

Ensure that the plist files are owned by root:wheel and have permissions -rw-r--r--. To take effect, you need to reboot your computer or run the following commands:

sudo launchctl load -w /Library/LaunchDaemons/limit.maxfiles.plist
sudo launchctl load -w /Library/LaunchDaemons/limit.maxproc.plist

You might need to unload the service before loading it.

Download YugabyteDB

You download YugabyteDB as follows:

Download the YugabyteDB tar.gz file by executing the following wget command:

wget https://downloads.yugabyte.com/releases/2.17.3.0/yugabyte-2.17.3.0-b152-darwin-x86_64.tar.gz

Extract the package and then change directories to the YugabyteDB home, as follows:
```
tar xvfz yugabyte-2.17.3.0-b152-darwin-x86_64.tar.gz && cd yugabyte-2.17.3.0/
```

On macOS pre-Monterey, create a single-node local cluster with a replication factor (RF) of 1 by running the following command:

./bin/yugabyted start

macOS Monterey enables AirPlay receiving by default, which listens on port 7000. This conflicts with YugabyteDB and causes yugabyted start to fail. Use the --master_webserver_port flag when you start the cluster to change the default port number, as follows:

./bin/yugabyted start --master_webserver_port=9999

Alternatively, you can disable AirPlay receiving, then start YugabyteDB normally, and then, optionally, re-enable AirPlay receiving.

Check the cluster status

Execute the following command to check the cluster status:

./bin/yugabyted status

Expect an output similar to the following:

+--------------------------------------------------------------------------------------------------+
|                                            yugabyted                                             |
+--------------------------------------------------------------------------------------------------+
| Status              : Running.                                                                   |
| Replication Factor  : 1                                                                          |
| Web console         : http://127.0.0.1:7000                                                      |
| JDBC                : jdbc:postgresql://127.0.0.1:5433/yugabyte?user=yugabyte&password=yugabyte  |
| YSQL                : bin/ysqlsh   -U yugabyte -d yugabyte                                       |
| YCQL                : bin/ycqlsh   -u cassandra                                                  |
| Data Dir            : /Users/myuser/var/data                                                     |
| Log Dir             : /Users/myuser/var/logs                                                     |
| Universe UUID       : fad6c687-e1dc-4dfd-af4b-380021e19be3                                       |
+--------------------------------------------------------------------------------------------------+

After the cluster has been created, clients can connect to the YSQL and YCQL APIs at http://localhost:5433 and http://localhost:9042 respectively. You can also check ~/var/data to see the data directory and ~/var/logs to see the logs directory.

If you have previously installed YugabyteDB version 2.8 or later and created a cluster on the same computer, you may need to upgrade the YSQL system catalog to run the latest features.

Use the Admin UI

The cluster you have created consists of two processes: YB-Master which keeps track of various metadata (list of tables, users, roles, permissions, and so on) and YB-TServer which is responsible for the actual end-user requests for data updates and queries.

Each of the processes exposes its own Admin UI that can be used to check the status of the corresponding process, as well as perform certain administrative operations. The YB-Master Admin UI is available at http://127.0.0.1:7000 (replace the port number if you've started yugabyted with the --master_webserver_port flag) and the YB-TServer Admin UI is available at http://127.0.0.1:9000.

Overview and YB-Master status

The following illustration shows the YB-Master home page with a cluster with a replication factor of 1, a single node, and no tables. The YugabyteDB version is also displayed.

master-home

The Masters section displays the 1 YB-Master along with its corresponding cloud, region, and zone placement.

YB-TServer status

Click See all nodes to open the Tablet Servers page that lists the YB-TServer along with the time since it last connected to the YB-Master using regular heartbeats. Because there are no user tables, User Tablet-Peers / Leaders is 0. As tables are added, new tablets (also known as shards) will be created automatically and distributed evenly across all the available tablet servers.

master-home

Connect to the database

Using the YugabyteDB SQL shell, ysqlsh, you can connect to your cluster and interact with it using distributed SQL. ysqlsh is installed with YugabyteDB and is located in the bin directory of the YugabyteDB home directory.

To open the YSQL shell, run ysqlsh.

./bin/ysqlsh

ysqlsh (11.2-YB-2.1.0.0-b0)
Type "help" for help.

yugabyte=#

To load sample data and explore an example using ysqlsh, refer to Retail Analytics.

Build an application

Applications connect to and interact with YugabyteDB using API client libraries (also known as client drivers). This section shows how to connect applications to your cluster using your favorite programming language.

Choose your language

Choose the language you want to use to build your application.

The Java application connects to a YugabyteDB cluster using the topology-aware Yugabyte JDBC driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in Java.

The application requires the following:

Java Development Kit (JDK) 1.8, or later, is installed. JDK installers for Linux and macOS can be downloaded from Oracle, Adoptium (OpenJDK), or Azul Systems (OpenJDK). Homebrew users on macOS can install using brew install openjdk.
Apache Maven 3.3 or later.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-java-app.git && cd yugabyte-simple-java-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the app.properties file located in the application src/main/resources/ folder.
- Set the following configuration parameters:
  - host - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - port - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - database - the name of the database you are connecting to (the default is yugabyte).
  - dbUser and dbPassword - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - sslMode - the SSL mode to use; use verify-full.
  - sslRootCert - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Build the application.
```
$ mvn clean package
```

Start the application.

$ java -cp target/yugabyte-simple-java-app-1.0-SNAPSHOT.jar SampleApp

If you are running the application on a free or single node cluster, the driver displays a warning that the load balance failed and will fall back to a regular connection.

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created DemoAccount table.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000

>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic Java application that works with YugabyteDB.

Explore the application logic

The Go application connects to a YugabyteDB cluster using the Go PostgreSQL driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in Go.

The application requires the following:

Go (tested with version 1.17.6).

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-go-app.git && cd yugabyte-simple-go-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.go file.
- Set the following configuration parameter constants:
  - host - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - port - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - dbName - the name of the database you are connecting to (the default is yugabyte).
  - dbUser and dbPassword - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - sslMode - the SSL mode to use; use verify-full.
  - sslRootCert - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Initialize the GO111MODULE variable.
```
$ export GO111MODULE=auto
```
Import the Go PostgreSQL driver.
```
$ go get github.com/lib/pq
```
Start the application.
```
$ go run sample-app.go
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic Go application that works with YugabyteDB.

Explore the application logic

The Python application connects to a YugabyteDB cluster using the Python psycopg2 PostgreSQL database adapter and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in Python.

The application requires the following:

Python 3.6 or later (Python 3.9.7 or later if running macOS on Apple silicon).

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-python-app.git && cd yugabyte-simple-python-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.py file.
- Set the following configuration parameter constants:
  - host - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - port - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - dbName - the name of the database you are connecting to (the default is yugabyte).
  - dbUser and dbPassword - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - sslMode - the SSL mode to use; use verify-full.
  - sslRootCert - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Install psycopg2 PostgreSQL database adapter.
```
$ pip3 install psycopg2-binary
```
Start the application.
```
$ python3 sample-app.py
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic Python application that works with YugabyteDB.

Explore the application logic

The Node.js application connects to a YugabyteDB cluster using the node-postgres driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in Node.js.

The application requires the following:

The latest version of Node.js.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-node-app.git && cd yugabyte-simple-node-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.js file.
- Set the following configuration parameter constants:
  - host - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - port - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - database - the name of the database you are connecting to (the default is yugabyte).
  - user and password - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - ssl - To enable verify-ca SSL mode, the rejectUnauthorized property is set to true to require root certificate chain validation; replace path_to_your_root_certificate with the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Install the node-postgres module.
```
npm install pg
```
Install the async utility:
```
npm install --save async
```
Start the application.
```
$ node sample-app.js
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic Node.js application that works with YugabyteDB.

Explore the application logic

The C application connects to a YugabyteDB cluster using the libpq driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in C.

The application requires the following:

32-bit (x86) or 64-bit (x64) architecture machine. (Use Rosetta to build and run on Apple silicon.)
gcc 4.1.2 or later, or clang 3.4 or later installed.
OpenSSL 1.1.1 or later (used by libpq to establish secure SSL connections).
libpq. Homebrew users on macOS can install using brew install libpq. You can download the PostgreSQL binaries and source from PostgreSQL Downloads.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-c-app.git && cd yugabyte-simple-c-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.c file.
- Set the following configuration-related macros:
  - HOST - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - PORT - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - DB_NAME - the name of the database you are connecting to (the default is yugabyte).
  - USER and PASSWORD - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - SSL_MODE - the SSL mode to use; use verify-full.
  - SSL_ROOT_CERT - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.

Build the application with gcc or clang.

gcc sample-app.c -o sample-app -I<path-to-libpq>/libpq/include -L<path-to-libpq>/libpq/lib -lpq

Replace <path-to-libpq> with the path to the libpq installation; for example, /usr/local/opt.
Start the application.
```
$ ./sample-app
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic C application that works with YugabyteDB.

Explore the application logic

The C++ application connects to a YugabyteDB cluster using the libpqxx driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in C++.

The application requires the following:

32-bit (x86) or 64-bit (x64) architecture machine. (Use Rosetta to build and run on Apple silicon.)
gcc 4.1.2 or later, or clang 3.4 or later installed.
OpenSSL 1.1.1 or later (used by libpq and libpqxx to establish secure SSL connections).
libpq. Homebrew users on macOS can install using brew install libpq. You can download the PostgreSQL binaries and source from PostgreSQL Downloads.
libpqxx. Homebrew users on macOS can install using brew install libpqxx. To build the driver yourself, refer to Building libpqxx.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-cpp-app.git && cd yugabyte-simple-cpp-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.cpp file.
- Set the following configuration-related constants:
  - HOST - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - PORT - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - DB_NAME - the name of the database you are connecting to (the default is yugabyte).
  - USER and PASSWORD - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - SSL_MODE - the SSL mode to use; use verify-full.
  - SSL_ROOT_CERT - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.

Build the application with gcc or clang.

g++ -std=c++17 sample-app.cpp -o sample-app -lpqxx -lpq \
-I<path-to-libpq>/libpq/include -I<path-to-libpqxx>/libpqxx/include \
-L<path-to-libpq>/libpq/lib -L<path-to-libpqxx>/libpqxx/lib

Replace <path-to-libpq> with the path to the libpq installation, and <path-to-libpqxx> with the path to the libpqxx installation; for example, /usr/local/opt.
Start the application.
```
$ ./sample-app
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic C++ application that works with YugabyteDB.

Explore the application logic

The C# application connects to a YugabyteDB cluster using the Npgsql driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in C#.

The application requires the following:

.NET 6.0 SDK or later.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-csharp-app.git && cd yugabyte-simple-csharp-app

The yugabyte-simple-csharp-app.csproj file includes the following package reference to include the driver:

<PackageReference Include="npgsql" Version="6.0.3" />

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.cs file.
- Set the following configuration-related parameters:
  - urlBuilder.Host - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - urlBuilder.Port - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - urlBuilder.Database - the name of the database you are connecting to (the default is yugabyte).
  - urlBuilder.Username and urlBuilder.Password - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - urlBuilder.SslMode - the SSL mode to use; use SslMode.VerifyFull.
  - urlBuilder.RootCertificate - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Build and run the application.
```
dotnet run
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic C# application that works with YugabyteDB.

Explore the application logic

The Ruby application connects to a YugabyteDB cluster using the Ruby Pg driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in Ruby.

The application requires the following:

Ruby 3.1 or later.
OpenSSL 1.1.1 or later (used by libpq and pg to establish secure SSL connections).
libpq. Homebrew users on macOS can install using brew install libpq. You can download the PostgreSQL binaries and source from PostgreSQL Downloads.
Ruby pg. To install Ruby pg, run the following command:
```
gem install pg -- --with-pg-include=<path-to-libpq>/libpq/include --with-pg-lib=<path-to-libpq>/libpq/lib
```
Replace <path-to-libpq> with the path to the libpq installation; for example, /usr/local/opt.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-ruby-app.git && cd yugabyte-simple-ruby-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.rb file.
- Set the following configuration-related parameters:
  - host - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - port - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - dbname - the name of the database you are connecting to (the default is yugabyte).
  - user and password - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - sslmode - the SSL mode to use; use verify-full.
  - sslrootcert - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Make the application file executable.
```
chmod +x sample-app.rb
```
Run the application.
```
$ ./sample-app.rb
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic Ruby application that works with YugabyteDB.

Explore the application logic

The Rust application connects to a YugabyteDB cluster using the Rust-Postgres driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in Rust.

The application requires the following:

Rust development environment. The sample application was created for Rust 1.58 but should work for earlier and later versions.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-rust-app.git && cd yugabyte-simple-rust-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.rs file in the src directory.
- Set the following configuration-related constants:
  - HOST - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - PORT - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - DB_NAME - the name of the database you are connecting to (the default is yugabyte).
  - USER and PASSWORD - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - SSL_MODE - the SSL mode to use; use SslMode::Require.
  - SSL_ROOT_CERT - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Build and run the application.
```
$ cargo run
```

The driver is included in the dependencies list of the Cargo.toml file and installed automatically the first time you run the application.

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic Rust application that works with YugabyteDB.

Explore the application logic

The PHP application connects to a YugabyteDB cluster using the php-pgsql driver and performs basic SQL operations. Use the application as a template to get started with YugabyteDB in PHP.

The application requires the following:

PHP runtime. The sample application was created using PHP 8.1 but should work with earlier and later versions. Homebrew users on macOS can install PHP using brew install php.
php-pgsql driver.
- On macOS, Homebrew automatically installs the driver with brew install php.
- Ubuntu users can install the driver using the sudo apt-get install php-pgsql command.
- CentOS users can install the driver using the sudo yum install php-pgsql command.

To build and run the application, do the following:

Clone the sample application to your computer:

git clone https://github.com/YugabyteDB-Samples/yugabyte-simple-php-app.git && cd yugabyte-simple-php-app

Provide connection parameters.

(You can skip this step and use the defaults if your cluster is running locally and listening on 127.0.0.1:5433.)

The application needs to establish a connection to the YugabyteDB cluster. To do this:
- Open the sample-app.php file.
- Set the following configuration-related constants:
  - HOST - the host name of your YugabyteDB cluster. For local clusters, use the default (127.0.0.1). For YugabyteDB Managed, select your cluster on the Clusters page, and click Settings. The host is displayed under Connection Parameters.
  - PORT - the port number for the driver to use (the default YugabyteDB YSQL port is 5433).
  - DB_NAME - the name of the database to connect to (the default is yugabyte).
  - USER and PASSWORD - the username and password for the YugabyteDB database. For local clusters, use the defaults (yugabyte). For YugabyteDB Managed, use the credentials in the credentials file you downloaded.
- YugabyteDB Managed requires SSL connections, so you need to set the following additional parameters:
  - SSL_MODE - the SSL mode to use; use verify-full.
  - SSL_ROOT_CERT - the full path to the YugabyteDB Managed cluster CA certificate.
- Save the file.
Run the application.
```
$ php sample-app.php
```

You should see output similar to the following:

>>>> Successfully connected to YugabyteDB!
>>>> Successfully created table DemoAccount.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 10000
name = John, age = 28, country = Canada, balance = 9000
>>>> Transferred 800 between accounts.
>>>> Selecting accounts:
name = Jessica, age = 28, country = USA, balance = 9200
name = John, age = 28, country = Canada, balance = 9800

You have successfully executed a basic PHP application that works with YugabyteDB.

Explore the application logic

Next step

Explore YugabyteDB