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Hiera data sets that match the distributed profiles of WSO2 API Manager (api-store, api-publisher, api-key-manager, gateway-manager, gateway-worker, traffic-manager) are shipped with clustering related configuration that is already enabled. Therefore, you need to only do a few changes to set up a distributed deployment in your preferred deployment pattern, before running the Puppet Agent.

  1. Add or update the host name mapping list.
    Puppet adds the required host entries explicitly in the /etc/hosts file in the Puppet Agent. For this purpose you have to update the hosts mappings appropriately in one of the following Hiera data files (YAML file) based on the pattern that you are using.

    • /etc/puppet/hieradata/<environment-name>/wso2/wso2am_runtime/<pattern-number>/default.yaml

    • /etc/puppet/hieradata/<environment-name>/wso2/wso2am_runtime/<pattern-name>/common.yaml 

  2. Add the Well Known Address (WKA) list for Gateway clusters and Publisher-Store cluster.
    The required configurations for clustering are already added, but you need to update the WKA IP addresses in the respective Hiera data files based on your deployment.

    This is not applicable to patterns 0, 1, 2, and 7 as those patterns do not have Gateway or Publisher-Store clusters.

  3. Modify all the MySQL based datasources in the respective Hiera data file (YAML file) that corresponds to the pattern you are using in order to point to the external MySQL servers. 

    This is not applicable for pattern 0 as pattern-0 uses a H2 database.

    Update the following in the /etc/puppet/hieradata/wso2/wso2am_runtime/[pattern-number]/default.yaml file for patterns 1, 2 and 7 and  /etc/puppet/hieradata/wso2/wso2am_runtime/[pattern-number]/common.yaml file for patterns 3 to 6.

    1. You need to only replace the IP address, with the IP address of database server that you are using.

      If you want to use any other database except MySQL, update the data sources appropriately.

      Example:
         wso2_am_db:
      name: WSO2_AM_DB
      description: The datasource used for API Manager database
      driver_class_name: "%{hiera('wso2::datasources::mysql::driver_class_name')}"
      url: jdbc:mysql://192.168.57.210:3306/apimgtdb?autoReconnect=true
      username: "%{hiera('wso2::datasources::mysql::username')}"
      password: "%{hiera('wso2::datasources::mysql::password')}"
      jndi_config: jdbc/WSO2AM_DB
      max_active: "%{hiera('wso2::datasources::common::max_active')}"
      max_wait: "%{hiera('wso2::datasources::common::max_wait')}"
      test_on_borrow: "%{hiera('wso2::datasources::common::test_on_borrow')}"
      default_auto_commit: "%{hiera('wso2::datasources::common::default_auto_commit')}"
      validation_query: "%{hiera('wso2::datasources::mysql::validation_query')}"
      validation_interval: "%{hiera('wso2::datasources::common::validation_interval')}"

    2. Create following database schemas in MySQL server. The databases need to be created in each of the pattern is listed below.

      Names of the databases that need to be createdDescription
      apimgtdbDatabase used for managing APIs.
      configdbDatabase used for the config registry.
      govregdbDatabase used for the gov registry.
      userdbDatabase used for the user management and user store.
      mbstoredbDatabase used for message broker.
      statdbDatabase used for getting statistics for API Manager.

      Addition to that if you are using pattern-6, create analyticseventstoredb and analyticprocesseddatastoredb which are used for Analytics recode store.

      You need to run MySQL database scripts for following tables as mentioned below.

      databasescript
      apimgtdb

      <API-M_HOME>/dbscripts/apimgt/mysql.sql

      If you are using MySQL 5.7 or later version, select mysql5.7.sql located in same directory without using mysql.sql script.

      configdb

      <API-M_HOME>/dbscripts/mysql.sql

      If you are using MySQL 5.7 or later version, select mysql5.7.sql located in same directory without using mysql.sql script.

      govregdb

      <API-M_HOME>/dbscripts/mysql.sql

      If you are using MySQL 5.7 or later version, select mysql5.7.sql located in same directory without using mysql.sql script.

      userdb

      <API-M_HOME>/dbscripts/mysql.sql

      If you are using MySQL 5.7 or later version, select mysql5.7.sql located in same directory without using mysql.sql script.

      mbstoredb

      <API-M_HOME>/dbscripts/mb-store/mysql-mb.sql

      You do not need to run the database scripts against following databases as the database tables of them will be created at run time.

      • statdb
      • analyticseventstoredb
      • analyticprocesseddatastoredb

    3. If you are using a MySQL database, make the following changes:

      1. Download and copy the MySQL driver JAR (mysql-connector-java-5.1.39-bin.jar) to the locations /etc/puppet/environments/production/modules/wso2am_runtime/files/configs/repository/components/lib and /etc/puppet/environments/production/modules/wso2am_analytics/files/configs/repository/components/lib in Puppet Master.

      2. Uncomment the file_list entry for JDBC connector JAR in the relevant Hiera data files.

        wso2::file_list:
	- "repository/components/lib/%{hiera('wso2::datasources::mysql::connector_jar')}"

      3. Update the JAR file name appropriately if your file name is not mysql-connector-java-5.1.39-bin.jar, which is set as the default value.

        wso2::datasources::mysql::connector_jar: mysql-connector-java-5.1.39-bin.jar

  4. Configure deployment synchronization in each of the Gateway related nodes. 
    Use one of the following methods to carry out this configuration. 

    • Rsync

      WSO2 recommends rsync instead of SVN, for deployment synchronization as it is an efficient, easy to use and lightweight solution compared to SVN.


      Why can't I use SVN based deployment synchronization (Dep Sync)?

      WSO2 has identified some inconsistencies when using Hazelcast clustering. As a result, from API-M 2.1.0 onwards WSO2 API-M has been designed so that it is possible to deploy API-M in a clustered setup without using Hazelcast clustering, so that users can use Hazelcast clustering only when absolutely necessary. However, if you use deployment synchronization as a content synchronization mechanism, you are compelled to use Hazelcast clustering. Therefore, WSO2 does not recommend using SVN based deployment synchronization.

      If you prefer to use rsync, see Configuring rsync for Deployment Synchronization.

    • SVN Based
      Make the respective SVN based configurations in the following files based on the pattern that you are using.

      PatternFiles to Update
      Pattern 3/etc/puppet/hieradata/wso2/wso2am_runtime/pattern-3/gateway-manager.yaml /etc/puppet/hieradata/wso2/wso2am_runtime/pattern-3/gateway-worker.yaml
      Pattern 4

      /etc/puppet/hieradata/wso2/wso2am_runtime/pattern-4/gateway-manager-env1.yaml
      /etc/puppet/hieradata/wso2/wso2am_runtime/pattern-4/gateway-worker-env1.yaml
      /etc/puppet/hieradata/wso2/wso2am_runtime/pattern-4/gateway-manager-env2.yaml
      /etc/puppet/hieradata/wso2/wso2am_runtime/pattern-4/gateway-worker-env1.yaml

      Pattern 5/etc/puppet/hieradata/wso2/wso2am_runtime/pattern-5/gateway-manager.yaml /etc/puppet/hieradata/wso2/wso2am_runtime/pattern-5/gw-plus-km.yaml.yaml
      Pattern 6/etc/puppet/hieradata/wso2/wso2am_runtime/pattern-6/gateway-manager.yaml /etc/puppet/hieradata/wso2/wso2am_runtime/pattern-6/gateway-worker.yaml

      Configure the SVN based deployment synchronization changes as follows:

      1. Uncomment the SVN based deployment synchronization configurations in the following files based on the pattern and update the configurations where required.
        Patterns 3 to 6 are configured for SVN based deployment synchronization; however, the configurations are commented out by default.

        Example
        wso2::dep_sync:
    enabled: true
    auto_checkout: true
    auto_commit: true
    repository_type: svn
    svn:
       url: http://svnrepo.example.com/repos/
       user: username
       password: password
       append_tenant_id: true
      2. Copy the required JARs for SVN, into the respective locations.
        1. Copy the svnkit-all-1.8.7.wso2v1.jar into the <PUPPET_HOME>/modules/wso2am/files/configs/repository/components/dropins directory.
        2. Copy the  trilead-ssh2-1.0.0-build215.jar into the <PUPPET_HOME>/modules/wso2am/files/configs/repository/components/lib directory.

        3. Uncomment the file_list entries for the latter mentioned two JAR files in the respective Hiera data files related to gateway nodes. 

          wso2::file_list:
   -  "repository/components/dropins/svnkit-all-1.8.7.wso2v1.jar"
   -  "repository/components/lib/trilead-ssh2-1.0.0-build215.jar"
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