Use External Middleware Services¶

This document describes how to use third-party middleware services, including MySQL, Redis, Elasticsearch, and S3Storage.

Use External Database (MySQL)¶

Prerequisites¶

DCE 5.0 uses MySQL database to store data, so only external MySQL database is supported.
The example scripts provided below are for demonstration purposes only. In actual applications, you should modify them according to specific requirements, such as database name, username, password, etc., and you can split the statements to be executed on different DBMS.

Steps¶

Prepare a MySQL database with permissions to create databases, users, and grant access.

Connect to the MySQL database and run the following SQL statements to create databases, users, and grant corresponding permissions:

# ghippo apiserver
CREATE DATABASE ghippo CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'ghippo' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON ghippo.* TO 'ghippo';

# ghippo keycloak
CREATE DATABASE keycloak CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'keycloak' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON keycloak.* TO 'keycloak';

# ghippo audit
CREATE DATABASE audit CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'audit' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON audit.* TO 'audit';

# kpanda
CREATE DATABASE kpanda CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'kpanda' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON kpanda.* TO 'kpanda';

# set sort_buffer_size (used for clusterpedia)
SET GLOBAL sort_buffer_size=8*1024*1024;
SET SESSION sort_buffer_size=8*1024*1024;

# skoala
CREATE DATABASE skoala CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'skoala' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON skoala.* TO 'skoala';

# amamba
CREATE DATABASE amamba CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'amamba' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON amamba.* TO 'amamba';

# insight
CREATE DATABASE insight CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'insight' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON insight.* TO 'insight';

# ipavo
CREATE DATABASE ipavo CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'ipavo' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON ipavo.* TO 'ipavo';

# kcollie
CREATE DATABASE kcollie CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'kcollie' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON kcollie.* TO 'kcollie';

# gmagpie
CREATE DATABASE gmagpie CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'gmagpie' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON gmagpie.* TO 'gmagpie';

# dowl
CREATE DATABASE dowl CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE USER 'dowl' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON dowl.* TO 'dowl';

In the clusterConfig.yaml, configure the externalMiddlewares.database parameter. Assuming the database access address is localhost:3306, different database types have different dataSourceName configuration formats. Refer to GORM documentation Connecting to a Database.

apiVersion: provision.daocloud.io/v1alpha3
kind: ClusterConfig
metadata:
  creationTimestamp: null
spec:
  ..............
  externalMiddlewares:
    database:
      kpanda:
        - dbDriverName: "mysql"
          # Please refer https://gorm.io/docs/connecting_to_the_database.html
          dataSourceName: "kpanda:password@tcp(localhost:3306)/dbname"
          # readwrite(default) or readonly
          accessType: readwrite
          # The maximum number of open connections to the database.
          #maxOpenConnections: 100
          # The maximum number of connections in the idle connection pool.
          #maxIdleConnections: 10
          # The maximum amount of time a connection may be reused.
          #connectionMaxLifetimeSeconds: 3600
          # The maximum amount of time a connection may be idle.
          #connectionMaxIdleSeconds: 1800
      ghippoApiserver:
        - dbDriverName: "mysql"
          dataSourceName: "ghippo:password@tcp(localhost:3306)/ghippo"
      ghippoKeycloak:
        - dbDriverName: "mysql"
          dataSourceName: "keycloak:password@tcp(localhost:3306)/keycloak"
      ghippoAuditserver:
        - dbDriverName: "mysql"
          dataSourceName: "audit:password@tcp(localhost:3306)/audit"
      skoala:
        - dbDriverName: "mysql"
          dataSourceName: "skoala:password@tcp(172.30.41.0:3308)/skoala"
      amamba:
        - dbDriverName: "mysql"
          dataSourceName: "amamba:password@tcp(172.30.41.0:3308)/amamba"
      insight:
        - dbDriverName: "mysql"
          dataSourceName: "insight:password@tcp(172.30.41.0:3308)/insight"
      ipavo:
        - dbDriverName: "mysql"
          dataSourceName: "ipavo:password@tcp(172.30.41.0:3308)/ipavo"
      kcollie:
        - dbDriverName: "mysql"
          dataSourceName: "kcollie:password@tcp(172.30.41.0:3308)/kcollie"
      gmagpie:
        - dbDriverName: "mysql"
          dataSourceName: "gmagpie:password@tcp(172.30.41.0:3308)/gmagpie"
      dowl:
        - dbDriverName: "mysql"
          dataSourceName: "dowl:password@tcp(172.30.41.0:3308)/dowl"

After completing the above configuration, you can proceed with deploying DCE 5.0 Enterprise.

Use External Redis¶

The steps to configure external Redis are as follows:

In the clusterConfig.yaml, configure the externalMiddlewares.redis parameter:
```
apiVersion: provision.daocloud.io/v1alpha3
kind: ClusterConfig
metadata:
spec:
  ..........
  externalMiddlewares:
    redis:
      kpanda: "redis://:password@localhost:6379"
  ..........
```
Note
- Support for three modes: Redis Standalone, Redis Sentinel, and Redis Cluster.
- Standalone URL format: redis://[[user]:password@]host[:port][/db-number][?option=value]
- Sentinel URL format: redis+sentinel://[[user]:password@]host1[:port1][,host2[:port2]]/master-name[/db-number][?option=value]
- Cluster URL format: redis://[[user]:password@]host1[:port1]?addr=host2[:port2][&addr=host3:[port3][&option=value]] or rediss://[[user]:password@]host1[:port1]?addr=host2[:port2][&addr=host3:[port3][&option=value]]
- Currently, only the container management product module uses the Redis component.
After completing the above configuration, you can proceed with deploying DCE 5.0 Enterprise.

Use External Elasticsearch¶

Note

When using an external Elasticsearch, please be aware that if the external Elasticsearch does not have TLS enabled, you must set TLS to off in the logging:output Helm parameter of Insight.

The steps to configure external Elasticsearch are as follows:

In the clusterConfig.yaml, configure the externalMiddlewares.elasticsearch parameter:

apiVersion: provision.daocloud.io/v1alpha3
kind: ClusterConfig
metadata:
spec:
  ..........
  externalMiddlewares:
    elasticsearch:
      insight:
        endpoint: "https://xx.xx.xx.xx:9200"
        # basic auth
        username: "username"
        password: "password"
  ..........

Note

Currently, only the observability product module uses the Elasticsearch component. If an external middleware is used, it is not recommended to use worker nodes in 7-node mode, as it may consume too many resources.

After completing the above configuration, you can proceed with deploying DCE 5.0 Enterprise.

Use External S3Storage¶

The steps to configure external S3Storage are as follows:

In the clusterConfig.yaml, configure the externalMiddlewares.S3Storage parameter:

apiVersion: provision.daocloud.io/v1alpha3
kind: ClusterConfig
metadata:
spec:
  ..........
  externalMiddlewares:
    S3Storage:
      default:
        endpoint: "https://xx.xx.xx.xx:9200"
        # Set if you dont want to verify the certificate.
        insecure: true
        bucket: "bucketname"
        accessKey: "YOUR-ACCESS-KEY-HERE"
        secretKey: "YOUR-SECRET-KEY-HERE"
  ..........

After completing the above configuration, you can proceed with deploying DCE 5.0 Enterprise.

Use External Kafka¶

Follow the steps below:

In the clusterConfig.yaml, configure the externalMiddlewares.kafka parameter:

apiVersion: provision.daocloud.io/v1alpha3
kind: ClusterConfig
metadata:
spec:
  ..........
  externalMiddlewares:
    kafka:
      brokers:
        - host1:9092
        - host2:9092
      # the username and password of kafka is not necessary
      username: "username"
      password: "password"
  ..........

Note

Currently, only the observability module uses the Kafka component.

After completing the above configuration, you can proceed with deploying DCE 5.0 Business Edition.

Use External Middleware Services¶

Use External Database (MySQL)¶

Prerequisites¶

Steps¶

Use External Redis¶

Use External Elasticsearch¶

Use External S3Storage¶

Use External Kafka¶

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