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Questions tagged [monitoring]

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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Is there a reason why sar would show different monitoring statistics on memory than other monitoring tools like dynatrace?

I'm currently investigating why I didn't get notified about a high memory utilization on one RHEL server from dynatrace. When checking the graphs of memory usage, both sar and dynatrace show different ...
VaTo's user avatar
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MT7601U Adapter in Linux - Monitor Mode Enabled, but Unable to Capture Handshake or Discover Devices

I'm facing an issue with my MT7601U network adapter on Linux. Although I've successfully entered monitor mode, I'm encountering difficulties capturing handshakes and discovering devices in the network/...
Mike Walter's user avatar
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Monitorix disable subgraphs

I have a Monitorix service running on my system. By changing y/n values in the graph_enable section I can enable and disable certain graphs, however, there are subgraphs for almost every main graph e....
Maksim's user avatar
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Kali linux monitor mode [duplicate]

I'm new to Kali Linux, in theory my laptop suports wifi monitor mode (Microsoft Network 3.4) but when i installed kali linux (pre-built) on VirtualBox and went through the options it was not showing ...
Natanael Gonzalez's user avatar
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Determining cause of recurring external SSD data transfer with goal of preventing it

The LED lights for an external SSD connected via USB to a Linux Mint box indicate data transfer every 00:06:15 (6 mins 15 secs), despite no user applications (and possibly no processes) accessing the ...
End Antisemitic Hate's user avatar
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21 views

Sporadic zombie and D state processes on server

I'm writing to seek your expert advice regarding a critical issue affecting my ThinkSystem SR630 V2 server running AlmaLinux 8.9 (kernel 4.18.0-513.9.1.el8_9.x86_64). It hosts two virtual machines on ...
supmethods's user avatar
1 vote
1 answer
60 views

Searching for tool to remotely monitor systemd services

I'm searching for a tool to remotely monitor systemd services. This would be used to monitor an embedded device running Linux 5.15. Access to device would be through network interface. There is access ...
Kalle's user avatar
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Running Linux commands execute hidden command to regenerate Backdoor

My CentOS server compromised, the backdoor uploaded in /var/www/html/, I have deleted the backdoor and browsed the backdoor - to be sure it's deleted - it's surly deleted, but when I run any command ...
Dany Burgos's user avatar
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3 answers
38 views

Monitoring 100+ services

I have got a lightweight service like 2MB binary, that runs on user units but I have running like 120 similar services but using a slightly different config on each service. I would like to monitor ...
Casper Netherlands's user avatar
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2 answers
426 views

How to check if a web server is reachable in Linux?

I want to poll every few minutes if an external web server is reachable from the Linux server. Assume the server is 10.20.30.40. I'm following this guide. https://www.baeldung.com/linux/hosts-network-...
achhainsan's user avatar
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Persistent atop across reboots

atop shows total CPU time since the last reboot. How can I have it persist across reboots?
wdkmaaeo's user avatar
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How do I monitor a snap installation with Monitorix

In Monitorix config file, I'd usually input the process binary. With a snap installation such as Nextcloud, how would I use that in Monitorix? Thank you.
Faxopita's user avatar
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What is the meaning of BAT○ in btop++?

On top (of the default layout) I have the CPU graph box. The title line of this box says on the left : "cpu", "menu", "preset 0", and on the right : BAT○ 98%, and 2000ms. ...
lofi's user avatar
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1 answer
478 views

intel_gpu_top output - two valiues for frequency and power consumption

In intel_gpu_top 1.27.1 CLI output, contrary to previous releases detailed in Get output from intel_gpu_top as variable in bash there are two values for each of frequency and power: intel-gpu-top: ...
Alban Browaeys's user avatar
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1 answer
27 views

Gather CPU utilisation or different workloads

I am trying to figure out for different workloads (CPU intensive, high DB IOPs etc), which compute series of cloud VM would be ideal. In order to do that I need to be able to get the CPU utilisation. ...
user14013917's user avatar
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Looking for a TUI that can visualize CPU/RAM usage data captured by atop

I've seed s-tui, and it is lovely, but is there something similar that can display usage data that was already captured into files? I'm using atop to generate these files. If needed I'll switch to ...
user2761064's user avatar
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Tool for monitoring kernel driver messages? What are the options?

I'm working on a kernel-level device driver that sends requests to an underlying piece of hardware. Those requests have a fixed length and a given layout (including multiple fields with encoded values,...
ismarlowe's user avatar
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Could nmap local network scan affect network general speed and/or performance?

For the past few days I've been trying to monitor my local network to look for new device connections. At first I thought of arpwatch, but if I'm not mistaken, it is worthless if not running on the ...
eXtremeDevil's user avatar
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1 answer
172 views

Show I/O rates of all processes in htop?

htop 3.2.2 running as a regular user only shows I/O rates (IO_RATE/IO_READ_RATE/IO_WRITE_RATE) for some processes and "N/A" for others. Running as root shows I/O for all processes. How can I ...
genpfault's user avatar
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Cumulative CPU time across reboots

How can I record and view cumulative CPU time on system across reboots? Essentially, it should be like the TIME+ column of top, but not per process. In other words, like vnstat, but for CPU time. I am ...
wjwrpoyob's user avatar
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1 answer
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GPU usage monitor for FreeBSD?

I am using FreeBSD on a personal desktop computer, and a nvidia GTX 1650 GPU. In my gnome system monitor (similar to task manager of MS Windows), I am able to monitor all the resources, including all ...
rohit4444's user avatar
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53 views

What is the best way to monitor a folder and dynamically symlink items into a different folder?

I have a second hard drive which has the following structure: $ tree -L 1 . ├── Documents ├── Music ├── Pictures └── Videos I want to monitor these folders for changes and, if any, create a symlink ...
telometto's user avatar
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Alert for centos7 kernel update

I would like to know how to set an alert on our monitoring tool, Whenever there is an update availbale for centos7 kernel version in Redhat site or in centos site..
ganesh koormapu's user avatar
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2 answers
61 views

How to monitor an offline linux and export the data from time to time

I have an offline system (a robot running Ubuntu, not connected to any network) I want to monitor the resource usage over time (mainly CPU and memory). I am used to Influx and Prometheus and i was ...
Hugal31's user avatar
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How to spawn a user screen in a docker container?

runsvdir: UNIX init scheme with service supervision from runit is a nice tool to re-run some service(s) if it dies. It monitor a directory for changes, inotify like. It execute scripts in directories ...
Mévatlavé Kraspek's user avatar
1 vote
0 answers
679 views

prometheus node exporter sockstat

I'm looking for the meaning of the node_sockstat_TCP_mem_* metrics. The output of the node exporter describes them as follows: # HELP node_sockstat_TCP_mem Number of TCP sockets in state mem. # TYPE ...
Emmanuel's user avatar
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1 answer
334 views

Is there a simple method to check file changes in subfolders?

Is there a simple method to check file changes in subfolders? I have folder SSLcerts with subfolders SiteNameXYZ. Every subfolder consists pack of cert-files. Ideally, I need a script that will ...
Alexander Dyadyun's user avatar
1 vote
1 answer
1k views

Monitoring packet loss simulated with tc

I found an interesting article that describes how to simulate network issues (like lost packets) on a linux server. On an Ubuntu test VM, I checked which interface is used for internet connectivity, ...
BMBM's user avatar
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179 views

powertop doesn't give estimate

Running powertop 2.8 doesn't give power estimate. It is a battery powered device (not a laptop though). Have run powertop enough number of times. (how many times is enough though?) Host OS: centos 8, ...
darntoodles's user avatar
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how to monitor servers properly with nagios?

Currently, I'm using nrpe to monitor clients using Nagios but when nrpe goes down then all the stat goes to an unknown state which causes it difficult to monitor critical alerts... What and how should ...
user561715's user avatar
2 votes
0 answers
487 views

Is there a GUI linux application that shows per mounted disk i/o transfer rate in a graphic?

Is there a GUI linux application that shows per mounted disk i/o transfer rate in a graphic? (Like gnome-system-monitor do for the swap mount but for each mounted drive) I'm looking for an application ...
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1 answer
187 views

How to NOT append nohup output to a file but replace it?

Lately I needed to be able to run a script in the background and monitor its output from another machine. For this reason I was able to use this command: $ nohup ./rsync.sh > ./output.txt This is ...
Martin Zeltin's user avatar
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1 answer
329 views

How to know which Internet domains are accessed by an app

My question is similar to this: how to find URLs accessed by a process I don't care about what is transmitted, but from where it is downloaded. I need to specify to the security department which URLs ...
david.perez's user avatar
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57 views

Bash Script to find the bad and good of the mahcine

I'm trying to create a bash script that at a certain time finds me a "bad", which is associated with a machine and a service. It turns out that from that time on I wanted to find the ...
ValeT's user avatar
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1 vote
1 answer
252 views

Conky 1.11.6 - Want to eliminate gaps above/below graphs

Environment Debian Linux 11.5 "bullseye" Conky 1.11.6 (compiled 2020-08-17, package 1.11.6-2) Xorg 1.20.11 (package 2:1.20.11-1+deb11u2) FVWM version 3 release 1.0.5 (built from git ...
Ben Scott's user avatar
  • 179
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2 answers
508 views

How can I receive alerts when files are deleted or modified?

I've read through how to monitor AWS EC2 file system changes using the Linux Audit system, and that all makes sense. I've also looked through the RHEL audit system documentation. I don't want to have ...
Matt's user avatar
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2 votes
3 answers
858 views

How do you monitor remote file system on Linux?

My business purpose is to monitor the remote file system on Linux, and if there are any new files, SFTP them to another machine and delete them. However, the limitation is that I cannot install any ...
user275616's user avatar
0 votes
1 answer
4k views

How to connect to wifi after toggling the wifi card into monitor mode

After running (1)sudo airmon-ng check list and (2)airmon-ng start <Iface>. I cannot come back to the original managed mode of the wifi interface. I am currently using: Kali 2022.3. (1). Kill any ...
A.Casanova's user avatar
1 vote
0 answers
133 views

hwmon "refresh rate"? how often are sensors read?

I'm trying to understand how often hwmon attributes/sensors are read/updated. A hwmon driver can have the HWMON_C_UPDATE_INTERVAL attribute, but it looks like that is just a way to expose the update ...
aggieNick02's user avatar
2 votes
1 answer
265 views

hddtemp with raid controller

# hddtemp /dev/sda: DELL PERC H740P Adp: S.M.A.R.T. not available /dev/sdb: DELL PERC H740P Adp: S.M.A.R.T. not available # smartctl --scan smartctl --scan /dev/sda -d scsi # /dev/sda, SCSI device /...
ron's user avatar
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0 votes
1 answer
21 views

Specto Missing from Debian 11

I once had this package called specto, that would monitor a website for changes. Now, it seems to be missing in Debian 11: ▶sudo apt install specto Reading package lists... Done Building dependency ...
Lonnie Best's user avatar
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1 vote
0 answers
24 views

Need to measure pairwire (ip based) bandwidth used over time when using TC

I need to measure the datarates of packets between multiple servers. I need pairwise bandwidths between the servers (if possible even the ports), not the overall datarate per interface on each server. ...
Pramodh Rachuri's user avatar
1 vote
1 answer
976 views

Linux keeps deleting files

I have a Linux server (VM on Azure) that only 4 people have access and no one has been doing anything on it. However, there are some files that keep disappearing from some folders. Is there anyone for ...
Catarina Ribeiro's user avatar
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0 answers
308 views

Constant hdd write but iotop shows nothing

The disk activity monitor widget in KDE (Debian) shows constant HDD write around 12 MiB/s, when I run iotop, there is nothing that would be constantly using HDD. When I run atop, at first PAG is red ...
atapaka's user avatar
  • 541
1 vote
2 answers
1k views

Best way to get resource usage information for a process?

What would be the best way to go about monitoring resource usage of certain running processes? For example if I wanted to generate log files of CPU and memory usage over time. From what I understand ...
Euchidna's user avatar
1 vote
1 answer
47 views

"Total In-/Out- coming connection awareness" - script?

once I had found a bash (or Perl maybe; it's so long ago, that I wasn't knowledgeable about bash enough to tell one set of hieroglyphs from another set so to speak) script that filtered the open files ...
von spotz's user avatar
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0 votes
0 answers
102 views

Linux utility to log user commands and screenshots for auditing

I am looking for a utility that I can implement in linux systems to "audit" user commands in the terminals and take intermittent screenshots for auditing in my systems. Is there a solution ...
tom's user avatar
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0 answers
64 views

When slabtop shows USE 0% but ACTIVE is nonzero, should I be worried or is it just a bug?

Start of my slabtop -sc looks like this Active / Total Objects (% used) : 3305074 / 4014163 (82.3%) Active / Total Slabs (% used) : 110077 / 110077 (100.0%) Active / Total Caches (% used) ...
Mikko Rantalainen's user avatar
0 votes
1 answer
385 views

Monitor several directories for specific files' creation, every 10s

OS: Ubuntu 22.04 LTS. Many posts deal with file monitoring. One in particular is of interest and based on inotifywait, but I don't know how to modify it for my purpose. Objective: to monitor $HOME/{...
Trynn's user avatar
  • 3
1 vote
0 answers
247 views

CPU Usage based on eBPF profiling

I am relatively new to the concept of eBPF and have, so far, been working with the BCC library. I've found the profile.py tool, alongside with FlameGraphs, to be really helpful when monitoring a ...
user529737's user avatar

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