PostgreSQL demo

Last modified 04 Oct 2021 15:31 +02:00

This demo shows how to run midPoint container with PstgreSQL repository implementation.

The image can be found in the Evolveum/midpoint-docker GitHub project.

Starting

$ cd demo/postgresql
$ docker-compose up --build

After docker-compose up command successfully finishes you should see something like this on the console:

postgresql_midpoint_server_1  | 2019-02-22 15:07:50,222 [] [main] INFO (org.springframework.boot.web.embedded.tomcat.TomcatWebServer): Tomcat started on port(s): 8080 (http) with context path '/midpoint'
postgresql_midpoint_server_1  | 2019-02-22 15:07:50,230 [] [main] INFO (com.evolveum.midpoint.web.boot.MidPointSpringApplication): Started MidPointSpringApplication in 74.425 seconds (JVM running for 77.109)

Now you can log into midPoint using http://localhost:8080/midpoint URL, with an user of administrator and a password of 5ecr3t.

You can safely ignore console messages like this:

postgresql_midpoint_data_1  | ERROR:  could not serialize access due to read/write dependencies among transactions
postgresql_midpoint_data_1  | DETAIL:  Reason code: Canceled on identification as a pivot, during write.
postgresql_midpoint_data_1  | HINT:  The transaction might succeed if retried.

This is a part of standard midPoint conflict resolution process. The mentioned transactions are really retried and they succeed eventually.

Containers

The demo/postgresql composition contains the following containers:

Container name Description

postgresql_midpoint_server_1

This is the standard container providing midPoint functionality. It contains standalone Tomcat running midPoint application.

postgresql_midpoint_data_1

This container hosts midPoint repository; this time it is implemented on PostgreSQL 9.5 database.

Communication

The containers publish the following TCP ports. (Port mapped to localhost denotes the mapping of container port to the host port where it can be reached from the outside.)

Container Port number Port mapped to localhost Description

postgresql_midpoint_server_1

8080

8080

HTTP port to be used to connect to midPoint application

postgresql_midpoint_data_1

5432

5432

Port used to connect to the PostgreSQL database

Docker volumes

The following volumes are created to persist data and other relevant files.

Volume name Description Used by container

postgresql_midpoint_home

The midPoint home directory. Contains schema extensions, logs, custom libraries, custom ConnId connectors, and so on.

postgresql_midpoint_server_1

postgresql_midpoint_data

Volume hosting PostgreSQL database used by midPoint.

postgresql_midpoint_data_1

Configuring the composition

The following configuration properties are supported. Please refer to the main documentation page for their explanation.

Property Default value

REPO_DATABASE_TYPE

postgresql

REPO_JDBC_URL

default

REPO_HOST

midpoint_data

REPO_PORT

default

REPO_DATABASE

midpoint

REPO_USER

midpoint

REPO_PASSWORD_FILE

/run/secrets/mp_database_password.txt

REPO_MISSING_SCHEMA_ACTION

create

REPO_UPGRADEABLE_SCHEMA_ACTION

stop

REPO_SCHEMA_VERSION_IF_MISSING

REPO_SCHEMA_VARIANT

MP_MEM_MAX

2048m

MP_MEM_INIT

1024m

MP_JAVA_OPTS

MP_KEYSTORE_PASSWORD_FILE

/run/secrets/mp_keystore_password.txt

TIMEZONE

UTC

You can tailor these to your needs.

The following Docker secrets are used:

Secret Location

mp_database_password.txt

configs-and-secrets/midpoint/application/database_password.txt

mp_keystore_password.txt

configs-and-secrets/midpoint/application/keystore_password.txt

The following configuration files are used:

Target file Source location Description

/opt/midpoint/var/

midpoint_server/container_files/mp-home/

When postgresql_midpoint_server_1 is created, the files from this directory are copied to the Midpoint home directory in the container.

You can modify or replace these files as needed.