Example: Configuration for a Database Community

A community of Juniper Networks databases lets you set up redundancy for client applications that connect to these databases.

This sample configuration describes the tasks for configuring Juniper Networks databases on C Series Controllers:

Requirements

Software

Hardware

Minimum SRC Release 1.0.0

C2000 or C4000

Overview and Sample Topology

You configure a number of Juniper Networks databases as members of a community to protect data by replicating data from one database to another, and by specifying relationships between databases to support failover if a database that has the primary role for a set of applications becomes inoperable. This example uses C1 and C2 as databases that have a primary role, and C3 as a database that has a secondary role.

Figure 17 shows the sample configuration.

Figure 17: Sample Community of Juniper Network Databases

 Sample Community of Juniper Network
Databases

The following configuration shows the configuration statements for databases shown in Figure 17.

Configuration

Configuring C1

CLI Quick Configuration

To quickly configure a Juniper Networks database, copy the following commands into a text editor, and modify them; then load the configuration from the file.

[edit] set system ldap server community role primary set system ldap server community primary-neighbors C2 set system ldap server community primary-connection-type clear set system ldap server community secondary-neighbors C3 set system ldap server community secondary-connection-type clear

Step-by-Step Procedure

To configure the C1 system:

  1. From configuration mode, access the configuration statement that configures the Juniper Networks database in community mode.
    [edit] user@C1# edit system ldap server community
  2. Specify the database role as primary.
    [edit system ldap server community] user@C1# set role primary
  3. Specify primary neighbors.
    [edit system ldap server community] user@C1# set primary-neighbors C2
  4. Specify the connection type of the primary neighbors as clear.
    [edit system ldap server community] user@C1# set primary-connection-type clear
  5. Specify secondary neighbors.
    [edit system ldap server community] user@C1# set secondary-neighbors C3
  6. Specify the connection type of the secondary neighbors as clear.
    [edit system ldap server community] user@C1# set secondary-connection-type clear

Configuring C2

CLI Quick Configuration

To customize the configuration example for your needs, copy the following commands into a text editor, and modify them; then load the configuration from the file.

[edit] set system ldap server community role primary set system ldap server community primary-neighbors C1 set system ldap server community primary-connection-type clear set system ldap server community secondary-neighbors C3 set system ldap server community secondary-connection-type clear

Step-by-Step Procedure

To configure the C2 system:

  1. From configuration mode, access the configuration statement that configures the Juniper Networks database in community mode.
    [edit] user@C2# edit system ldap server community
  2. Specify the database role as primary.
    [edit system ldap server community] user@C2# set role primary
  3. Specify primary neighbors.
    [edit system ldap server community] user@C2# set primary-neighbors C1
  4. Specify the connection type of the primary neighbors as clear.
    [edit system ldap server community] user@C1# set primary-connection-type clear
  5. Specify secondary neighbors.
    [edit system ldap server community] user@C2# set secondary-neighbors C3
  6. Specify the connection type of the secondary neighbors as clear.
    [edit system ldap server community] user@C1# set secondary-connection-type clear

Configuring C3

CLI Quick Configuration

To customize the configuration example for your needs, copy the following commands into a text editor, and modify them; then load the configuration from the file.

[edit] set system ldap server community role secondary set system ldap server community primary-neighbors C1 C2 set system ldap server community primary-connection-type clear

Step-by-Step Procedure

To configure the C3 system:

  1. From configuration mode, access the configuration statement that configures the Juniper Networks database in community mode.
    [edit] user@C3# edit system ldap server community
  2. Specify the database role as primary.
    [edit system ldap server community] user@C3# set role secondary
  3. Specify primary neighbors.
    [edit system ldap server community] user@C3# set primary-neighbors C1 C2
  4. Specify the connection type of the primary neighbors as clear.
    [edit system ldap server community] user@C1# set primary-connection-type clear

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