monitoring – Page 2 – Tarik Billa

What is the difference between “container_memory_working_set_bytes” and “container_memory_rss” metric on the container

November 21, 2023 by Tarik

You are right. I will try to address your questions in more detail. What is the difference between two metrics? container_memory_rss equals to the value of total_rss from /sys/fs/cgroups/memory/memory.status file: // The amount of anonymous and swap cache memory (includes transparent // hugepages). // Units: Bytes. RSS uint64 `json:”rss”` The total amount of anonymous and … Read more

Sidecar containers in Kubernetes Jobs?

September 14, 2023 by Tarik

You can use the downward api to figure out your own podname from within the sidecar, and then retrieving your own pod from the apiserver to lookup exist status. Let me know how this goes.

How can I monitor a Windows directory for changes?

September 11, 2023 by Tarik

Use a FileSystemWatcher like below to create a WatcherCreated Event(). I used this to create a Windows Service that watches a Network folder and then emails a specified group on arrival of new files. // Declare a new FILESYSTEMWATCHER protected FileSystemWatcher watcher; string pathToFolder = @”YourDesired Path Here”; // Initialize the New FILESYSTEMWATCHER watcher = … Read more

PowerShell script to check the status of a URL

September 4, 2023 by Tarik

I recently set up a script that does this. As David Brabant pointed out, you can use the System.Net.WebRequest class to do an HTTP request. To check whether it is operational, you should use the following example code: # First we create the request. $HTTP_Request = [System.Net.WebRequest]::Create(‘http://google.com’) # We then get a response from the … Read more

Can jconsole data be retrieved from the command line?

September 1, 2023 by Tarik

jconsole just provides a wrapper around the JMX MBeans that are in the platform MBeanServer. You can write a program to connect to your VM using the Attach API which would then query the MBeans. Or you can expose the platform MBeanServer over RMI and query the MBeans that way. See the java.lang.management package for … Read more

other open source alternatives to codahale’s “metrics”? [closed]

August 17, 2023 by Tarik

Some suggestions: Perf4J: Perf4J is a set of utilities for calculating and displaying performance statistics for Java code. ERMA: ERMA (Extremely Reusable Monitoring API) is an instrumentation API that has been designed to be applicable for all monitoring needs. javasimon: Java Simon is a simple monitoring API that allows you to follow and better understand … Read more

How to dynamically monitor Java heap size?

August 13, 2023 by Tarik

maxMemory() returns the maximum amount of memory that java will use. So That will not get you what you want. totalMemory() is what you are looking for though. See The docs

Can a C# program measure its own CPU usage somehow?

August 8, 2023 by Tarik

You can also use System.Diagnostics.Process.TotalProcessorTime and System.Diagnostics.ProcessThread.TotalProcessorTime properties to calculate your processor usage as this article describes.

How to monitor Windows services [closed]

August 7, 2023 by Tarik

A “might be enough” version of this is built into Windows. Look into the “Recovery” tab of the service properties, as available via services.msc. You can act on a service fail with: “Restart the Service” “Run a Progam” “Restart the Computer” “Run a program” could be a small script that sends a mail, for example. … Read more

Best way to aggregate multiple log files from several servers [closed]

July 26, 2023 by Tarik

Probably the lightest-weight solution for real-time log watching is to use Dancer’s shell in concurrent mode with tail -f: dsh -Mac — tail -f /var/log/apache/*.log The -a is for all machine names that you’ve defined in ~/.dsh/machines.list The -c is for concurrent running of tail The -M prepends the hostname to every line of output.