[SOLVED] Remotely check CPU, memory and disk space IBM Bluemix PHP instance

Remotely check CPU, memory and disk space IBM Bluemix PHP instance

Remotely check CPU, memory and disk space IBM Bluemix PHP instance.

I have a php instance running in IBM Bluemix.

Now I want to check the CPU, Memory and Disk Space from an external program by calling a php web page.

For CPU I tried the following function:

function get_server_cpu_usage(){
    $load = sys_getloadavg();
    $cores = shell_exec("grep 'model name' /proc/cpuinfo | wc -l");
    $load[2] = ($load[2] / $cores) * 100;
    return $load[2];
}

For Memory I use the following function:

memory_get_usage(true)

For Disk Space I use the following function:

disk_free_space("/")

But when I compare these results with the results provided by the IBM Bluemix Console, they are different.

Is there a correct way to externally monitor these values?

Solution

You can retrieve that information using CF API REST call. You can find the CF APIs documentation here:

Application summary: https://apidocs.cloudfoundry.org/234/apps/get_app_summary.html
Detailed application stats: https://apidocs.cloudfoundry.org/234/apps/get_detailed_stats_for_a_started_app.html

In this specific case you could do a curl call from your php application and parse the JSON response for CPU, Memory and Disk Space information.

curl "https://api.ng.bluemix.net/v2/apps/YOURAPP_GUID/summary" -X GET -H "Authorization: bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyX2lkIjoidWFhLWlkLTQyNCIsImVtYWlsIjoiZW1haWwtMjkzQHNvbWVkb21haW4uY29tIiwic2NvcGUiOlsiY2xvdWRfY29udHJvbGxlci5hZG1pbiJdLCJhdWQiOlsiY2xvdWRfY29udHJvbGxlciJdLCJleHAiOjE0NjA1MDY2NjF9.iUpeFnPKDWf3sxvDB0RF2_nSLAkqLZP7iN6Nx0bWE-Q"

You can retrieve the Authorization header with:

cf oauth-token

after login to IBM Bluemix (cf login)

If you want retrieve the auth-token from your application you should use another REST API before running the first curl get.

curl -s -X POST -H "Accept-Encoding: application/json" -d "grant_type=password&password=YOURPASSWORD&scope=&username=YOURUSERNAME" -u "cf:" https://login.ng.bluemix.net/UAALoginServerWAR/oauth/token