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ManageApp

Management Application Configuration

The N2SVCD Management Application provides a simple HTTP server to which operators can connect in order to view the current N2SVCD running configuration. Drilldown links allow operators to monitor in-use resources (e.g. to check connection status, and to review long-running calls in progress).

When the N2SVCD is running, you can connect your web browser to the N2SVCD Management interface at the address http://<n2svcd-host>:8088/, or other port number as may be configured.

In addition:

Note that the ManageApp is quite distinct from the WatchdogApp:

You should only ever require one Management Application instance within the N2SVCD, although it is possible to run multiple apps (as long as each one listens on a distinct TCP port number). You don’t need to run any Management Application at all, although not doing so means that you will not have the ability to query the status of your running services.

The following configuration is used to create a Management Application instance.

<?xml version="1.0" encoding="utf-8"?>
<n2svcd>
  ...
  <applications>
    ...
    <application name="Manager" module="ManageApp">
      <include><lib>../apps/manage/lib</lib></include>
      <parameters>
        <parameter name="http_host" value="10.42.2.154"/>
        <parameter name="http_port" value="8088"/>
        <parameter name="security" value="sha1"/>
        <parameter name="admin_password" value="LSNb2Q/UBFfpT.hd:gdiyvTHqk+lnJqogbloOBzTGIC8"/>
        <parameter name="user_password" value="SuLk1c4I3tAEV4lj:TTHJaIHmkGxQKf+4Z3bZE2d48Cg"/>
      </parameters>
    </application>
    ...
  </application>
  ...
</n2svcd>

Configuration Details

In addition to the common Application configuration parameters, the application element attributes for a Manage Application instance may include the below. For details of the various parameter types used, refer to Common Configuration.

Parameter Name Type XML Type Description
module String Attribute [Required] ManageApp
include.lib String Element [Required] ../apps/manage/lib
parameters Array Attribute [Required] As per Common Configuration Application parameters.
.edr_enabled - - This value is ignored; the Manage Application does not support writing EDRs.
.http_host String Attribute IPv4 Host Name or A.B.C.D IPv4 Address on which to listen for management requests.
(Default = 0.0.0.0)
.http_port Integer Attribute IPv4 Port Number on which to listen for management requests.
(Default = 8088)
.http_dir String Attribute Directory containing static resource files for HTML management interface.
(Default = ../apps/manage/html)
.use_cache Boolean Attribute Whether static files cached forever in memory and never checked for changes.
(Default = YES)
.security String Attribute Specifies how passwords are encoded. Possible values are:
  • open = administrator access granted to all users without authentication
  • closed = all access is denied
  • plain = passwords are configured without encryption
  • sha1 = passwords are stored as SHA1 hash
  • bcrypt = passwords are stored as Bcrypt hash
(Default = plain)
.admin_password String Attribute The password for the admin user. For security = none this password is not used. For security = plain this is a plaintext password. For other types of security this is the hashed version of the password including a salt prefix.
(Default = No admin Password)
.user_password String Attribute The password for the user user. For security = none this password is not used. For security = plain this is a plaintext password. For other types of security this is the hashed version of the password including a salt prefix.
(Default = No user Password)
.ssl Boolean Attribute Whether or not the management GUI will operate under a secure SSL mode.
If enabled, all traffic is expected via SSL and insecure connections will be rejected.
(Default = 0)
.ssl_host String Attribute IPv4 Host Name or A.B.C.D IPv4 Address on which to listen for SSL management requests.
(Default = 0.0.0.0)
.ssl_port Integer Attribute IPv4 Port Number on which to listen for SSL management requests.
(Default = 8089)
.ssl_cert String Attribute [Conditional] The file path on disk to the location of the SSL Certificate to use when generating SSL connections. This is required if SSL is enabled. The specified path must be readable by the application user.
.ssl_key Integer Attribute [Conditional] The file path on disk to the location of the SSL Key to use when generating SSL connections. This is required if SSL is enabled. The specified path must be readable by the application user.

Generating Hashed Passwords

When using the sha1 and bcrypt methods to store passwords, the value to be written into the database must be generated using the mkpasswd program supplied with the n2svcd daemon. This program is normally installed as /usr/share/n2svcd/bin/mkpasswd.

$ cd /usr/share/n2svcd/bin
$ ./mkpasswd sha1
Password:
Re-Enter:
[Encrypted] = SuLk1c4I3tAEV4lj:TTHJaIHmkGxQKf+4Z3bZE2d48Cg

Example Management Page

An example management page is:

Message Handling

In addition to the common Application management messages, the ManageApp uses the following messages: