To change the default charts for all users you need to update the roles.json file (/etc/xdmod/roles.json if you installed the RPM or PREFIX/etc/roles.json if you did a manual install) and change the JSON for the charts. Since it is not obvious how to do this, I suggest looking at the JSON created from the Metric Explorer for the changes you need to make in roles.json.

First, log into the portal and create the desired charts using the Metric Explorer. You can add this chart to the summary page, but only for that user, by checking “Show in Summary Tab”.

After saving the chart, select from the table UserProfiles in the database moddb.

mysql> SELECT * FROM moddb.UserProfiles;

This will show the user profile data for all users including the chart JSON serialized by PHP. If you are unsure of your user_id, check the Users table.

mysql> SELECT id, username FROM moddb.Users;

Next you’ll need to deserialize the data then examine the JSON. Copy this code into a file and run it with the data from your user profile:

<?php
$data = 'a:1:{....'; // Copy your data into this variable.
$profile = unserialize($data);
$queries = json_decode($profile['queries'], true);
foreach ($queries as $name => $query) {
    echo $name, ":\n";
    echo $query['config'], "\n\n";
}

This will output the JSON for each chart saved for the user the data was copied from. Find the chart that you want to add to the default summary page and copy it into summary_charts section of roles.json. Add the JSON object list after the name of the chart.

"summary_charts": [
    {
        ...
    },
    {
        ...
    },
    ...
]

You should also add a title to JSON for the chart that will be displayed on the summary page.

"summary_charts": [
    {
        "title": "Chart Title",
        ...
    },
    ...
]

Note that it is possible to have a different set of charts for different roles, but the default configuration uses a single set of charts for all roles.