Obtaining real-time values of system parameters or events (processor load, server responsiveness, intrusion attempts, …), or getting alerted when certain events happen

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1answer
20 views

Getting the size of an URL with referenced content

Is there a recommendable way to get the bytes size of an URL with all referenced images, CSS and javascript files (the number of bytes a normal visitor has to receive before the page has fully loaded ...
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2answers
40 views

How to execute a command when internet is back

Sometimes my wifi is connected to router but my router is not connected to internet. How can I execute a command when my internet is back (from command line)? I want to execute: mpg123 ...
0
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4answers
55 views

Ensure that cron daemon stays running

If on a debian 7 server (wheezy) running in a hosted VM and an up-to-date cron daemon there is a bug so cron stopped running without obvious reason. Since this only happened once ever since, it is ...
0
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1answer
28 views

Sensu remediation : not able to trigger client

I am a newbee to Sensu remediation i tried to restart process with custom script Senario: if my http link goes down then i use to manually run the script and start it. we moved to Sensu recently as ...
0
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1answer
49 views

Zabbix web install Redhat conflicts php

I am trying to install Zabbix on redhat 7 64bit. The zabbix server installed successfully with command yum install zabbix-server-mysql But I am getting conflicts with php70u with php56u when I tried ...
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1answer
35 views

How do I monitor bash_history file for manual modifications?

I am trying to create a daemon to monitor a users's bash_history file for manual modifications. In other words, if a user opens the file and modifies it, the daemon will notify this action for safety ...
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1answer
51 views

udev monitor hotplug rule not running

I have setup a basic udev rule to detect when I connect or disconnect a mDP cable. The file is /etc/udev/rules.d/95-monitor-hotplug.rules KERNEL=="card0", SUBSYSTEM=="drm", ENV{DISPLAY}=":0", ...
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0answers
7 views

Heartbeat with no utilization nor load with ganglia

I use ganglia to monitor my computer cluster. On Ganglia Web Interface, I sometimes have the following issue: given a node, according to the physical view and the node view, the node has sent a ...
1
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1answer
34 views

How to monitor system performance over time

I wrote the below script to determine how my system is holding up against various games. It checks all the vitals (GPU, RAM, and CPU) and then appends the data to a log file. Is this a reasonable ...
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1answer
42 views

Is there a way to monitor disk i/o patterns? (i.e. random or sequential i/o?)

While an application is running, I can monitor disk bandwidth usage using linux tools including dstat. Now I'd like to know how many sequential or random disk I/Os are occurring in the system. Does ...
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0answers
11 views

Graphics are NaN whereas no heartbeat was received: what could explain this?

I use ganglia to monitor my computer cluster. On Ganglia Web Interface, I sometimes have the following issue: given a node, according to the physical view and the node view, the node has sent a ...
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3answers
74 views

Monitoring a GPU cluster

I have 10 servers running on Ubuntu 14.04 x64. Each server has a few Nvidia GPUs. I am looking for a monitoring program that would allow me to view the GPU usage on all servers at a glance.
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1answer
13 views

monitor simple process output

On my system I can check a job's status using qstat: $ qstat 2048930 Job ID Name User Time Use S Queue ------------------------- ---------------- ...
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2answers
31 views

How to find processes which uses the most RAM in last X seconds?

Could you please help me to sort this out? I'm trying to write a bash script which will monitor ram usage (not only ram but cpu and network as well) and show me 3 processes which use the most ram in ...
0
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1answer
49 views

Network monitor - delay

I am currently running Kali Linux on Raspberry Pi 2 and using it as network monitor. I have developed my own C application with libpcap and I am getting average delay on LAN about 300 microseconds, ...
0
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1answer
56 views

Count number of tcp connections per second

I have a service which can only handle a max of 10 requests per second and I need to monitor how often this is exceeded. I have seen various solutions with tcpdump, ss, netstat, ntop but none seem to ...
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2answers
41 views

Tracking/Monitoring Short-Lived CPU-Intensive Process on one CPU

So I've been working with this issue for some time now, and I'm having trouble finding the tools to troubleshoot this problem, which I have to imagine exist. So here's the basics of my problem: We ...
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1answer
30 views

Capture specific string and send notification every time

This is a script in bash. Here Which capture a string "ERROR: your TCP- connection is dead." from a Live dynamic log file. Here the name of a log file "TcpRcpt.log" which contain sample of a log ...
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1answer
39 views

FileSystem monitoring using a config file

I am trying to monitor filesystem space using a shell script. That script should refer a config file that has alert status constraint. The config file is as below FileSYSTEM WARNING CRITICAL ...
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2answers
44 views

How to detect which process filled up disk space

During weekend my Debian based proxy crashed due to insufficient free space. After reboot it was fine again, so on monday I went hunting for logs and/or explanations for saturday hang but I couldn't ...
0
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1answer
79 views

nagios SSL handshake

I have nagios client which gave sudden error after an upgrade. I reinstalled nagios-plugin and nrpe agent again but unable solve error. This version uses nrpe under xinetd. # ...
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2answers
62 views

Memory usage and space disk on Solaris 11

How can I monitor Memory Usage: 33/512MB (6%) Disk usage: 4.2/20GB (23%) CPU Load: 0.01 on a Solaris 11 System? I want to make a script to monitor my desktop resources.
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4answers
730 views

Monitor hard disk activity

In a Ubuntu 14.04 server I am experiencing a massive hard disk activity which has no apparent justification: it comes as a burst, it lasts a few minutes and then disappears. It consumes system ...
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2answers
125 views

Monitor and limit internet bandwidth per network client

On a linux server with dhcpd that acts as the internet gateway for all clients of the LAN: how can I monitor the internet usage based on IP/MAC address, and deny internet access if a certain bandwidth ...
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0answers
30 views

Linux system and services information

I am trying to create a process to fix machines in my organization. We have a few thousand machines and what I am trying to do is the following. A) Create a script that can create a config file ...
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0answers
11 views

collectd doesnt remove old disks

I'm using collectd on Debian. As the result of a separate problem, I removed a disk, but the disk's corresponding rrd file still exists on the system, and it could be there forever. Is it possible ...
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2answers
51 views

How can strace monitor itself?

I have a Hypothetical Situation. (1) Let us say we have two strace Processes S1 & S2, which are simply monitoring each other. How can this be possible ? Well, in the command-line options for ...
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1answer
28 views

Connect gnome-system-monitor to another (headless) machine

This might be a shot in the dark, but I am wondering if there is a way that I can connect my system monitor on my computer to my headless box. It would be awesome to somehow use that interface ...
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0answers
35 views

Collectd only midterm

I'm using collectd to monitor the status of my server. In my plugin LoadPlugin load, it sends out 3 values: .shortterm .midterm .longterm Is it possible to filter out .shortterm and .longterm so ...
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2answers
42 views

How much was uploaded in the last five minutes?

I do not need some kind of realtime visual status of my ethernet - I want to run my script when last five minutes I uploaded less than X. So I need to get only one number from some command. What can ...
3
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2answers
135 views

How to detect and warn if a process is using 100% CPU for a long time?

Every now and then (every few days) I notice that a process is using 100% CPU. The process is avrdude started by the Arduino IDE which, under certain circumstances that I haven't been able to ...
0
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1answer
113 views

Unable to see client on Uchiwa dashboard (Sensu Monitoring)

I have a Sensu SERVER setup and a Sensu CLIENT. Services sensu-server, sensu-client, uchiwa, sensu-api are running on SERVER. Services sensu-client is running on CLIENT. All the checks I described ...
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0answers
114 views

Nginx Performance Monitoring: How to collect CPU, Memory and Disk Utilization data?

I'm relatively new to shell programming and I need to collect statistical data on nginx web server performance running on Linux VMs for further analysis. I have checked some tools and I find dstat ...
4
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1answer
115 views

The sum of % in the CPU column doesn't match the total CPU % row [duplicate]

I don't understand why the sum of % in the cpu column in top doesn't match the total CPU % row: Text version with slightly different values: ubuntu@server:~$ top top - 23:20:21 up 5:18, 3 users, ...
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0answers
60 views

htop showing less memory usage

I'm currently trying to benchmark performance improvements when using a RAM disk. So I've been giving my VM 24 of the total 32 GB RAM, and created a 16GB RAM Disk inside. It's beeing used, ...
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0answers
16 views

How can I see file events of all processes matching those with keyword in path?

How can I see file events of all processes matching only those with keyword in path ? Here is my typical usecase. I'm investigating why Docker can't authorize with 3rd-party service using credentials ...
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0answers
28 views

List the GPU utilizations for each screen

How can I list all screens launched with screen along with their GPU utilizations? (screen -ls gives the lists of screens but not their GPU utilization) By GPU utilization of a screen, I mean the sum ...
0
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1answer
45 views

List the CPU utilizations for each screen

How can I list all screens launched with screen along with their CPU utilizations? (screen -ls gives the lists of screens but not their CPU utilization) By CPU utilization of a screen, I mean the sum ...
1
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0answers
42 views

Why nvidia-smi's GPU so rarely reaches 100%?

I have logged the GPU utilization of my 3 GPUs (GeForce GTX Titan X) for 5 days with nvidia-smi, every 10 seconds. The GPUs were all being utilized: I count 1307 occurrences of 99 % while only 8 ...
2
votes
1answer
125 views

How to pipe a sample log message manually to logstash for processing

I have set-up an ELK server in testing environment. I intend to send log messages from different clients to ELK, but first i want to test it from localhost to verify it running properly. Previously ...
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2answers
572 views

How to log GPU load?

I wonder how to log GPU load. I use Nvidia graphic cards with CUDA.
4
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5answers
458 views

How to log Internet connection drops

I need to execute a script as soon as my raspberry pi gets connected to the Internet. However I was wondering if there was a better way than just pinging Google every minute or so. My problem is that ...
1
vote
1answer
70 views

How do I find out the window name of fullscreen internet content (eg Flash)?

--- The context --- I'm using Openbox to create a dedicated workspace/desktop for my browser -- the browser only opens on that workspace, and any other windows created on it get kicked onto a ...
1
vote
1answer
53 views

Monitoring GPU memory I/O

Is there any way to monitor GPU memory I/O from the shell, with Nvidia graphic cards used with CUDA? I use nvidia-smi to see the current memory utilization, but I would prefer to see the deltas ...
0
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0answers
27 views

What utilities will allow me to see how much network data a process has used in a session?

I need to know how much network data each program/process are using on my machine. There are great tools (like nethogs) to give me information on current usage. However, it does not give me ...
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0answers
69 views

GPU usage per process on a Linux machine (CUDA)

I use the CUDA toolkit to perform some computations on my Nvidia GPUs. How can I see the per-process GPU usage on a Linux machine (CUDA)? nvidia-smi does list all processes for each GPU, but doesn't ...
1
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1answer
36 views

How to put the percentage of use of each core from cpu

I use the Zabbix Server to monitor my environment. The metrics used by Zabbix to view the CPU are too confusing, so I would like to simplify. Is there a way to get the percentage of use of each core ...
0
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0answers
351 views

certificate error while Adding Hosts in Icinga monitoring tool

I am getting certificate error while Adding Hosts in Icinga ! I am very new to it so not able to figure out the error but I have received proper keys and certificates from client ! sh -x ...
0
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1answer
28 views

mysql monitoring tool

Is there any monitoring tool for mysql which will send a notification mail to mentioned email ID ? It must monitor below parameters. 1. mysql more than 500 concurrent connections. 2. mysql deadlocks. ...
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0answers
64 views

Per-user GPU usage on a Linux machine (CUDA)

I use the CUDA toolkit to perform some computations on my Nvidia GPUs. How can I see the per-user GPU usage on a Linux machine (CUDA)? nvidia-smi doesn't seem to contain information: I am aware I ...