monitoring

问题 I am using -Xloggc to output the GC messages to a file. However I am also interested in knowing the system parameters like CPU, Memory, I/O when the GC events happen. I understand that sar linux command is there, but how can I know the metrics at time of GC events instead of manually comparing the results using time stamps. Java 1.7 Oracle enterprise linux 2.6.39 Thanks. 回答1: If you're up to Java 1.7 update 4, you can register a GarbageCollectorMXBean. Here's an example of its setup,

问题 I can print out Host UP Time percentage from Nagios-Report Perl Module with following code: #!/usr/bin/perl use strict ; use Nagios::Report ; my $x = Nagios::Report->new(q<local_cgi localhost nagiosadmin>) or die "Can't construct Nagios::Report object." ; $x->mkreport( [ qw(HOST_NAME PERCENT_TOTAL_TIME_UP) ], sub { my %F = @_; my $u = $F{PERCENT_TOTAL_TIME_UP}; $u =~ s/%//; }, 0, sub { my $F = shift @_ ; } ) ; $x->debug_dump ; But How can I only print out Service UP Time Percentage? I mean

问题 I'd like to write a monitoring plugin that checks various hosts on my network to make sure that password or interactive SSH authentication is not enabled. That is, I need to write code that: Connects to an SSH port. Enumerates available authentication methods. Verifies that only key based authentication is possible. Methods using either python or bourne sh code (using ssh ) is most interesting to me, but other languages, libraries or hints are appreciated too. 回答1: I'm currently building one

问题 Is there a .NET equivalent for monitoring and management - similar to JMX? 回答1: You can find a JMX port to .net in Codeplex (NetMX). And a related article in CodeProject. 回答2: Try WMI, accessible through the System.Management namespace in .NET. 回答3: There is Microsoft .Net Events but I'm afraid that you'll have to build the eventing into code. Not that easy. Wish that there was an attribute that you could add to "enable" monitoring of that specific method. 来源： https://stackoverflow.com

问题 I am trying to understand how to use SBAP in my application because it is a very handy tool for development. I'm reading their reference guide but I'm not understanding a few things. Here is my pom for my application right now: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <packaging>war</packaging>

问题 Debug HTTP is easy, you have all sort of tools to do it (like Fiddler). What about SMTP? How to Debug SMTP Communications? My target system is Windows. Suggested tools: Ethereal tcpdump Microsoft Network Monitor 回答1: Try Ethereal - its a free network protocol analyzer. The SMTP protocol is all ascii, so once you see whats inside the TCP connection, you should be good to go. It will take a bit of work learning how to use Ethereal. 回答2: For the two people who responded with Ethereal: We renamed

问题 I'm looking for the best way for my organization to implement some BizTalk monitoring that will notify us when messages are being suspended. How can this be done? 回答1: I would take a look at System Center Operations Manager or BizTalk 360. 回答2: Did you look at this option, it helps to notify not just suspended instances, you can look out for any states like active, ready-to-run, dehydrated etc http://blogs.biztalk360.com/what-is-biztalk-service-instances-suspended-active-schedule-etc-and-how

问题 I have a working 1.15.1 kubenetes cluster using kubeadm on bare-metal and just deployed metrics-server as in the docs: git clone https://github.com/kubernetes-incubator/metrics-server.git kubectl create -f metrics-server/deploy/1.8+/ After some time I try kubectl top node and I get as response: error: metrics not available yet Also when I try kubectl top pods I get: W0721 20:01:31.786615 21232 top_pod.go:266] Metrics not available for pod default/pod-deployment-57b99df6b4-khh84, age: 27h31m59

问题 I'm having a problem where every 12-24 hours, HHVM crashes but it seems to leave the process running. It seems most providers just use php5-fpm as a failover within nginx for stability. However, this won't restart the non-responsive hhvm instance. Since the process is left running, most server monitoring solutions will see it as a live daemon, and not restart it. HTTP monitoring can be slow to react. Is it possible to trigger the hhvm restart on failover? If not, what would be the best

问题 With Tensorflow it is possible to monitor quantities during training, using tf.summary. Is it possible to do the same using Keras ? Could you include an example by modifying the code at https://github.com/fchollet/keras/blob/master/examples/variational_autoencoder.py and monitoring the KL loss (defined at line 53) Thank you in advance ! 回答1: Have you tried the TensorBoard callback? [1] tensorboard = keras.callbacks.TensorBoard(log_dir='./logs', histogram_freq=1, write_graph=True, write_images