4. Admin Server and Statistics

The Admin tag is used to control the behavior of the administration server and statistics collection for the instance.

Element	Description
InetAddr	Defines a port for the embedded HTTP admin server, which can then be accessed via a browser. This element can also specify an IP address, in which case the HTTP server listens only on that address. If no IP address is specified, the HTTP server listens on all available addresses. There is no default for this parameter. If this parameter is not provided, AMPS does not provide an HTTP admin server, but will continue to collect statistics.
FileName	Location for storing the statistics information reported by the Admin Server. default: :memory: When the FileName is set to the default, the statistics database is maintained in memory. stats.db file location
Interval	The refresh interval for the Admin Server to update gathered statistics. default: 10s minimum: 1s
Authentication	The authentication to use for the Administrative interface. This is an Authentication element, as described in Chapter 12.
Entitlement	The entitlement to use for the Administrative interface. This is an Entitlement element, as described in Chapter 13.

Table 4.1: Admin Parameters

Starting with version 5.2, AMPS supports the ability to connect to the Admin interface over HTTPS. To enable HTTPS, provide a Certificate and a PrivateKey in the Admin configuration block.

Element	Description
Certificate	The certificate file to use for the admin server. Default: There is no default for this option.
PrivateKey	The private key to use for the admin server. Default: There is no default for this option.
Ciphers	The cipher list to use for the admin sevrer. The cipher list is passed to the OpenSSL implementation without being interpreted by the AMPS server. Default: There is no default for this option. For OpenSSL, details on the format of the cipher list are available at https://www.openssl.org/docs/man1.1.0/apps/ciphers.html

Table 4.2: HTTPS Parameters for Admin interface

<Admin>
    <InetAddr>localhost:9090</InetAddr>
    <FileName>stats.db</FileName>
    <Interval>20s</Interval>
</Admin>

Example 4.1: Admin Example