Below we show how to install Keycloak in ubuntu behind Nginx proxy and also use PostgreSQL as its database.
//download keycloadk and unzip
wget https://github.com/keycloak/keycloak/releases/download/19.0.1/keycloak-legacy-19.0.1.zip
//create admin user
cd keycloak-legacy-19.0.1/
./bin/add-user-keycloak.sh -r master -u admin -p mypassword
//start keycloak
./bin/standalone.sh
//enable proxy for keycloak by adding proxy-address-forwarding="true"
vim standalone/configuration/standalone.xml
<http-listener name="default" socket-binding="http" redirect-socket="https" enable-http2="true" proxy-address-forwarding="true"/>
////nginx reverse proxy , Keycloak runs on port 8080
vim /etc/nginx/nginx.conf
location / {
proxy_pass http://localhost:8080/;
proxy_set_header X-Forwarded-For $host;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
}
/////change database from h2 to PostgreSQL
cd /home/ubuntu/keycloak-legacy-19.0.1/modules/system/layers/keycloak/org
mkdir postgresql
cd postgresql
mkdir main
wget https://jdbc.postgresql.org/download/postgresql-42.2.26.jre6.jar
///create module.xml and copy contents below and save the file
cd /home/ubuntu/keycloak-legacy-19.0.1/modules/system/layers/keycloak/org/postgresql/main
vim module.xml
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.3" name="org.postgresql">
<resources>
<resource-root path="postgresql-42.2.26.jar"/>
</resources>
<dependencies>
<module name="javax.api"/>
<module name="javax.transaction.api"/>
</dependencies>
</module>
///change database configuration and add postgersql
cd /home/ubuntu/keycloak-legacy-19.0.1//standalone/configuration
//add driver
vim standalone.xml
<drivers>
<driver name="postgresql" module="org.postgresql">
<xa-datasource-class>org.postgresql.xa.PGXADataSource</xa-datasource-class>
</driver>
<driver name="h2" module="com.h2database.h2">
<xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
</driver>
</drivers>
/////add datasources
<datasources>
<datasource jndi-name="java:jboss/datasources/ExampleDS" pool-name="ExampleDS" enabled="true" use-java-context="true" statistics-enabled="${wildfly.datasources.statistics-enabled:${wildfly.statistics-enabled:false}}">
<connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE</connection-url>
<driver>h2</driver>
<security>
<user-name>sa</user-name>
<password>sa</password>
</security>
</datasource>
<datasource jndi-name="java:jboss/datasources/KeycloakDS" pool-name="KeycloakDS" enabled="true" use-java-context="true" statistics-enabled="${wildfly.datasources.statistics-enabled:${wildfly.statistics-enabled:false}}">
<connection-url>jdbc:postgresql://localhost/keycloakdb</connection-url>
<driver>postgresql</driver>
<pool>
<max-pool-size>20</max-pool-size>
</pool>
<security>
<user-name>Your PostgreSQL username</user-name>
<password>Your PostgreSQL password</password>
</security>
</datasource>
<drivers>
<driver name="postgresql" module="org.postgresql">
<xa-datasource-class>org.postgresql.xa.PGXADataSource</xa-datasource-class>
</driver>
<driver name="h2" module="com.h2database.h2">
<xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
</driver>
</drivers>
</datasources>
