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Questions tagged [monitoring]

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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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Yesterday I upgraded a VM (with very limited disk space) from Debian/bookworm to the shiny new Debian/trixie. One of the changes introduced was setting the frequency of status printout in syslog-ng to ...
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On Linux, it's possible to disable overcommitting memory which makes it behave like Windows, in that malloc() will fail once all physical memory is used up. As explained in this insightful and good ...
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Prometheus, Loki and Promtail have been updated. Its Silence policy doesn't work anymore and alerts continues sent to the appropriate chat.
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I utilize Mate's Hardware Sensor Monitor, and it shows the following for my device: What does each label refer to? What temperatures are considered dangerous?
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I have a folder on my RHEL 9 server that gets deleted every few days, but I don’t know which process or user is responsible. I’d like to log all events related to this folder, particularly deletions. ...
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When moving from md-raid to btrfs raid, I am missing one feature from mdadm.conf: PROGRAM /sbin/mdadm-alert.sh This will trigger a script on any md-raid issues or important events. I use this in ...
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How can I utilize the RS485 port of Epever XTRA (and possibly also Tracer) series solar charge controller? I'd like to use it for monitoring as well as for easy parameter modification. The system ...
Jaroslav Kucera's user avatar
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How can I view the objects that are removed from the varnish cache in real-time? I know that I can monitor for PURGE events using varnishlog, and I know that I can monitor varnishstat to see the ...
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I have root access to a Linux system and need to log processes without installing any additional software, using only built-in tools like top. However, I want the process to run in the background ...
Akhil Akkapelli's user avatar
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I'd like to have a record of which processes are using the network and when on my Linux server. Most tools I see (nethogs, iftop, etc.) are designed to only show what's happening right now on the ...
Jez's user avatar
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I would like to find the parent process for a large amount of small child processes performing small IO operations. For example, consider the following python script: import os import time import ...
emandret's user avatar
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I'm trying to capture raw/binary Ethernet traffic from my interface, so I can parse it using C. I don't want to parse any PCAP headers. I would prefer without the preamble and end bytes, but it's okay ...
intrigued_66's user avatar
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There is no basic tool for Linux distributions for getting data rate or summary of data input/output for a directory (on a Linux filesystem). What is the percentage difference between a listed file ...
beyondtime's user avatar
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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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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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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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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 ...
Amazon Dies In Darkness's user avatar
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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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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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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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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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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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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. ...
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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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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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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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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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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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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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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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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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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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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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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
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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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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
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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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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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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
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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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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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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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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
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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
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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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3 answers
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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
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1 answer
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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
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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
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# 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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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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