Wavefront Errors and Resolution

Wavefront errors and suggested actions to resolve them.

Chart Builder and Query Editor Errors

Error	Resolution
Query syntax error: Cannot aggregate more than 500000 series	Revise the query, for example: Filter by point tag. Filter by source. Use grouping. The example in the link uses grouping with an aggregation function, but you can use it with any function. The techniques help you show the information that's actually useful.
Another Error	Another Solution

Proxy Errors

Error	Reason	Resolution
You see "java: command not found" in `wavefront.log`.	Java is either not installed, or is not in your path.	Install Java using your local package manager, and make sure that your path includes the Java binary.
You see "Cannot fetch daemon configuration from remote server: org.jboss.resteasy.client.exception.ResteasyIOException: IOException" in `wavefront.log`.	You may have an incorrect server URL in your wavefront.conf file; you may have blocked the outgoing connection to that server URL (port 443); or the Wavefront servers may be down.	Run `curl <wavefrontServerUrl>` from the machine running the proxy, where `<wavefrontServerUrl>` is the full URL (including "https://) provided to you by Wavefront and in your `wavefront.conf` file.
You see "Cannot post work unit result to Wavefront servers. Will enqueue and retry later." in `wavefront.log`.	You may have an incorrect server URL in your `wavefront.conf` file; you may have blocked the outgoing connection to that server URL (port 443).	Run `curl <wavefrontServerUrl>` from the machine running the proxy, where `<wavefrontServerUrl>` is the full URL (including "https://") provided to you by Wavefront and in your `wavefront.conf` file.
You see "Exception in thread "main" java.lang.UnsupportedClassVersionError: com/sunnylabs/GraphiteValidator : Unsupported major.minor version 51.0" in `wavefront.log`.	You are using Java 1.6 or lower instead of Java 1.7.	Upgrade Java to 1.7 through your local package manager.
You see "Exception in thread "Thread-2" java.net.BindException: Address already in use" in `wavefront.log`.	You already have another process listening on port 2878, or may have started two proxies accidentally.	Use the `ps` command to find and delete any existing proxies, and then start the proxy again.
You can't run `telnet localhost 2878`; the connection is refused.	Ensure that you don't have an iptables rule blocking the traffic. Ensure that the proxy is running. Ensure that you are running `telnet localhost 2878` on the machine where the proxy is running.	Use the `ps` command to make sure that the proxy is running, and examine your iptables rules to ensure that TCP port 2878 is accessible locally.