monitoring

I need a way to request a heap dump from within the application . Rationale: When I encounter a specific error condition, I'd like to dump heap, so that I can see what is holding on to the memory. But I would like to automate this (For example, when I detect that some specific condition has occurred. Or when a watchdog doesn't gets its pings anymore. When some test fails). Thus I need a way to dump the heap from within the application itself. I can't seem to find it with the MX beans stuff. Although the MX Beans can give very nice stack traces with monitor and "ownable synchronizer" info,

We use Kubernetes Job s for a lot of batch computing here and I'd like to instrument each Job with a monitoring sidecar to update a centralized tracking system with the progress of a job. The only problem is, I can't figure out what the semantics are (or are supposed to be) of multiple containers in a job. I gave it a shot anyways (with an alpine sidecar that printed "hello" every 1 sec) and after my main task completed, the Job s are considered Successful and the kubectl get pods in Kubernetes 1.2.0 shows: NAME READY STATUS RESTARTS AGE job-69541b2b2c0189ba82529830fe6064bd-ddt2b 1/2 Completed

I am a developer on a web app that uses an Oracle database. However, often the UI will trigger database operations that take a while to process. As a result, the client would like a progress bar when these situations occur. I recently discovered that I can query V$SESSION_LONGOPS from a second connection, and this is great, but it only works on operations that take longer than 6 seconds. This means that I can't update the progress bar in the UI until 6 seconds has passed. I've done research on wait times in V$SESSION but as far as I've seen, that doesn't include the waiting for the query. Is

I'm trying query a remote JVM with jps using jstatd, in order to eventually monitor it using VisualVM. I got jstatd running with the following security policy: grant codebase "file:${java.home}/../lib/tools.jar" { permission java.security.AllPermission; }; jstatd is running on a 64-bit Linux box with a 1.6.0_10 version HotSpot vm. The jstatd command is: jstatd -J-Djava.security.policy=jstatd.tools.policy -J-Djava.rmi.server.logCalls=true I'm trying to run jps from a Windows 7 machine. Due to firewall restrictions, I'm tunneling the RMI data through an SSH tunnel to my Windows machine such that

I have a third party VPN app on my non-rooted Android 4.4 device, and want to write a background service to monitor the VPN connection and alert the user if the VPN connection has been broken. Is there a way to do this? I couldn't find any way using the VPNService API. Thanks -D AndZp This is works for me: Tested from API 16 to 23: List<String> networkList = new ArrayList<>(); try { for (NetworkInterface networkInterface : Collections.list(NetworkInterface.getNetworkInterfaces())) { if (networkInterface.isUp()) networkList.add(networkInterface.getName()); } } catch (Exception ex) { Timber.d(

I have the Android Emulator running in my Ubuntu VM and just installed an apk file trough the console. The emulator and adb have many options to view what is going on on the device. But how can I get a list of services that are currently running? I'm trying to find out if a specific app installes a notify service to view (unwanted) ads. I even know the services' name. PS.: I'm an advanced beginner - but not advanced enough. So thanks for your help. You can get the list with the following command : adb shell dumpsys activity services If you just need a simple list without all the detail dumpsys