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.
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.
Step-by-Step Procedure
To configure the C1 system:
- From configuration mode, access the configuration statement
that configures the Juniper Networks database in community mode.[edit]user@C1# edit system ldap server community
- Specify the database role as primary.[edit system ldap server community]user@C1# set role primary
- Specify primary neighbors.[edit system ldap server community]user@C1# set primary-neighbors C2
- Specify the connection type of the primary neighbors as
clear.[edit system ldap server community]user@C1# set primary-connection-type clear
- Specify secondary neighbors.[edit system ldap server community]user@C1# set secondary-neighbors C3
- 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.
Step-by-Step Procedure
To configure the C2 system:
- From configuration mode, access the configuration statement
that configures the Juniper Networks database in community mode.[edit]user@C2# edit system ldap server community
- Specify the database role as primary.[edit system ldap server community]user@C2# set role primary
- Specify primary neighbors.[edit system ldap server community]user@C2# set primary-neighbors C1
- Specify the connection type of the primary neighbors as
clear.[edit system ldap server community]user@C1# set primary-connection-type clear
- Specify secondary neighbors.[edit system ldap server community]user@C2# set secondary-neighbors C3
- 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.
Step-by-Step Procedure
To configure the C3 system:
- From configuration mode, access the configuration statement
that configures the Juniper Networks database in community mode.[edit]user@C3# edit system ldap server community
- Specify the database role as primary.[edit system ldap server community]user@C3# set role secondary
- Specify primary neighbors.[edit system ldap server community]user@C3# set primary-neighbors C1 C2
- Specify the connection type of the primary neighbors as
clear.[edit system ldap server community]user@C1# set primary-connection-type clear