Symptoms:
We upgraded EM from APM 9.6 to 10.1 and tried to access the ATC console, but was unsuccessful in doing this. It gives the below errors on the ATC page.
Error reading data from polling URL: ../apm/appmap/private/permission. Retrying in 60000ms. Attempt 3
Error retrieving permissions. Status code: 503
Installation/upgrade logs look good and show no errors and the Postgres DB is accessible.
Environment:
APM 10.1 / Windows 2008
Cause:
The introscope.webview.enterprisemanager.rest.base property in the IntroscopeWebview.properties has not been updated accordingly during the upgrade process.
Workaround:
Un-comment(if commented out) and modify following property in a IntroscopeWebview.properties file. Note that {EM_HOST} would be the IP address or hostname of the EM you are connecting to.
introscope.webview.enterprisemanager.rest.base=http://{EM_HOST}:8081/apm/appmap
* Note: 8081 is the default port that is a "introscope.enterprisemanager.webserver.port" property value of EM's IntroscopeEnterpriseManager.properties file. They should match.