Authentication using HTTP basic

Basic authentication is a simple authentication scheme built into the HTTP protocol, which uses base64-encoded username and password pairs as credentials.

Prerequisites

Install htpasswd in your environment to create a password file for storing username-password pairs.

For Ubuntu/Debian, run the following command to install htpasswd.
```
apt install apache2-utils
```
For CentOS/RHEL, run the following command to install htpasswd.
```
yum install httpd-tools
```

Create your authentication file

note

Currently, you can use MD5 (recommended) and CRYPT encryption to authenticate your password.

Create a password file named .htpasswd with a user account superuser/admin:

Use MD5 encryption (recommended):

htpasswd -cmb /path/to/.htpasswd superuser admin

Use CRYPT encryption:

htpasswd -cdb /path/to/.htpasswd superuser admin

You can preview the content of your password file by running the following command:

cat path/to/.htpasswd
superuser:$apr1$GBIYZYFZ$MzLcPrvoUky16mLcK6UtX/

Enable basic authentication on brokers

To configure brokers to authenticate clients, add the following parameters to the conf/broker.conf file. If you use a standalone Pulsar, you need to add these parameters to the conf/standalone.conf file:

# Configuration to enable Basic authentication
authenticationEnabled=true
authenticationProviders=org.apache.pulsar.broker.authentication.AuthenticationProviderBasic

basicAuthConf=file:///path/to/.htpasswd
# basicAuthConf=/path/to/.htpasswd
# When use the base64 format, you need to encode the .htpaswd content to bas64
# basicAuthConf=data:;base64,YOUR-BASE64
# basicAuthConf=YOUR-BASE64

# Authentication settings of the broker itself. Used when the broker connects to other brokers, either in same or other clusters
brokerClientAuthenticationPlugin=org.apache.pulsar.client.impl.auth.AuthenticationBasic
brokerClientAuthenticationParameters={"userId":"superuser","password":"admin"}

# If this flag is set then the broker authenticates the original Auth data
# else it just accepts the originalPrincipal and authorizes it (if required).
authenticateOriginalAuthData=true

note

You can also set an environment variable named PULSAR_EXTRA_OPTS and the value is -Dpulsar.auth.basic.conf=/path/to/.htpasswd. Pulsar reads this environment variable to implement HTTP basic authentication.

Enable basic authentication on proxies

To configure proxies to authenticate clients, add the following parameters to the conf/proxy.conf file:

# For clients connecting to the proxy
authenticationEnabled=true
authenticationProviders=org.apache.pulsar.broker.authentication.AuthenticationProviderBasic

basicAuthConf=file:///path/to/.htpasswd
# basicAuthConf=/path/to/.htpasswd
# When use the base64 format, you need to encode the .htpaswd content to bas64
# basicAuthConf=data:;base64,YOUR-BASE64
# basicAuthConf=YOUR-BASE64

# For the proxy to connect to brokers
brokerClientAuthenticationPlugin=org.apache.pulsar.client.impl.auth.AuthenticationBasic
brokerClientAuthenticationParameters={"userId":"superuser","password":"admin"}

# Whether client authorization credentials are forwarded to the broker for re-authorization.
# Authentication must be enabled via authenticationEnabled=true for this to take effect.
forwardAuthorizationCredentials=true

note

Configure basic authentication in CLI tools

Command-line tools, such as pulsar-admin, pulsar-perf and pulsar-client, use the conf/client.conf file in your Pulsar installation. To configure basic authentication in Pulsar CLI tools, you need to add the following parameters to the conf/client.conf file.

authPlugin=org.apache.pulsar.client.impl.auth.AuthenticationBasic
authParams={"userId":"superuser","password":"admin"}

Configure basic authentication in Pulsar clients

The following example shows how to configure basic authentication when using Pulsar clients.

Java
C++

AuthenticationBasic auth = new AuthenticationBasic();
auth.configure("{\"userId\":\"superuser\",\"password\":\"admin\"}");
PulsarClient client = PulsarClient.builder()
   .serviceUrl("pulsar://broker.example.com:6650")
   .authentication(auth)
   .build();

#include <pulsar/Client.h>

int main() {
    pulsar::ClientConfiguration config;
    AuthenticationPtr auth = pulsar::AuthBasic::create("admin", "123456")
    config.setAuth(auth);
    pulsar::Client client("pulsar://broker.example.com:6650/", config);

    return 0;
}