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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Sysdig does not show exit event for write syscall

I'm trying to capture write to stdout (or stderr), but apparently the actual data is related to the exit event. I wrote a simple C program that writes to stdout and stderr. #include <stdio.h> ...
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Recommendation for tools or suite that can pull error logs from servers/enclosures

As the title suggests, I am looking for a community recommendation on the best way to pull logs from remote devices, and then quickly scan those logs for key strings, and/or specifically list hardware ...
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Never updated (See 'Build / Update', page awstats_setup.html) (web log analyzer)

Hi i'm installing awstats (web log analyzer) with this command sudo apt install awstats and it work at the first ! but the problem now is get this error in the web page Never updated (See 'Build / ...
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Real-time mysql db change monitoring

I'm using git to monitor file-system changes (and be able to roll them back!) for a series of updates I'm doing to a WordPress site. I'd like the equivalent for mysql, but I'd settle for just manually ...
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How can i copy a file without being tracked? [closed]

I am a non-root user in a linux server. I want to copy some file in this server. but i dont want anyone to tracked this operation. Can you offer some suggestion?
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Which process generated specific DNS query?

Context: I have a few Mac OS laptops, Catalina 10.15. I noticed suspicious DNS requests in our firewall logs (capable of showing DNS queries), and traced the source IPs to these Mac Books. I checked ...
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NMON analyze cpu and mem 1 day

I tried to analyze one day's worth of CPU and memory using nmon on AIX, but I have an error -- why? I also want to run it in background. user@host(/home/user)$ nmon -s 900 -c 96 -m 96 -r "nmon ...
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cli real-time monitoring of web server traffic per second over time (ncurses)

Is there a tool that can be used to monitor the traffic a web server is processing in real-time from the command line? I'm looking for a cli ncurses tool like nload, but one that can show the requests ...
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Deauth by Aireplay-ng doesn't work (Kali Linux)

I've USB wifi adaptor TP-link WN822N, what I use with Kali Linux 2021.1 on vmWare. I want to make deauth attak with Aireplay-ng. My Target - is my AP ASUS and client is iPhone. So, I scan by airodump-...
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AuditD and SysCall alerts

Given an alert rule like -a always,exit -F arch=b32 -S open -S openat -F exit=-EACCES -k access how does adding multiple SysCalls (-S) options work? When an application gets executed do all the ...
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How can I get GPU memory temperature with atitool?

I want to monitor GPU temperatures on my RX5700 xt. This command: atitool -temp gives only core temp. Can I get mem temp with this tool?
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How to troubleshooting with log tracking? (framework)

How to troubleshooting with log tracking (framework) for an IT Support or Sysadmins I need the methodology and step's : How to incident documentation (form or template). How to Detect the problem ...
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Ubuntu 100% swap usage all the time

I have Ubuntu 16.04 on my VPS. I using server mainly to running web scrapers in python. Other things are django project hosted by Docker, postgreSQL database. I using netdata tool to monitoring usage ...
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Restart a process if a message is detected on stdout

Is there a way of monitoring a process (like for example with supervisord), and then restarting the process if the stdout outputs a specific line of text? In my case the line to check for would be: ...
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How to track all shortcut keys pressed and the process they interact with?

For a while now and for some reason I find myself in the unpleasant situation of Ctrl-w not working anymore in any program, which means I need the mouse any time I want to close a tab. I tried ...
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How do I enable the Wi-Fi as a primary network tool in Kali Linux?

While installing Kali Linux there was an option to choose a primary network between Ethernet and Wireless network. But since my device has a problem with wireless I opted for Ethernet. Now, I have ...
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How to LISTEN and alert on ESTABLISHED connection (low-interactive honeypot)

What is the most robust solution for a super-simple linux daemon that just LISTENS on some port(s) and every time a connection is ESTABLISHED, it immediately sends me an email alert? I'm building a ...
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70 views

Monitoring a file and executing a command based on changes to that file

I am searching for a way to execute a command when a keyword appears in a given file, say temp.txt. Currently, I have tried tail -F temp.txt | awk '/keyword/ {echo found}'. The desired goal is for ...
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Lightweight process/daemon monitor? (ie. monitor and restart a single process)

Can anybody recommend a lightweight process/daemon monitor? I'm running a user-land service process and I just need something to monitor and restart it when it crashes. The system is running embedded ...
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55 views

What does pgalloc_(dma|dma32|normal|movable) in /proc/vmstat measure?

My /proc/vmstat contains the following rows: pgalloc_dma 0 pgalloc_dma32 288126724 pgalloc_normal 33952724486 pgalloc_movable 0 I'm wondering what they are measurements of. Are they counters of the ...
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Windows remote network (CentOS) bandwidth usage utility?

is there a Windows tool (or scripting facility) to remotely monitor a CentOS machine network bandwidth usage?
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48 views

run a script after a binary was called

I would like to modify iptables after VPN connection. What is the best approach to achieve that ? I already tried through systemd with a custom unit in NetworkManager dispatcher.d directory but it ...
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56 views

Memory allocation counter for Linux

I am looking for a counter provided by the Linux kernel counting the number of memory allocations performed by tasks on the system. I want to watch for high velocity changes in this counter, using ...
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Monitoring a installation

I have an installation file that shall be run with root privileges. I have created a linux sandbox and would like to know what files are actually created and which are modified by such install script. ...
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How to Monitor what Changes a File

Some files on a Debian 9 server periodically overwritten to the original status after I modified it. I couldn't find what process/program is doing that job. Nothing is defined on crontab. Posibilly ...
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233 views

NRPE Could not complete SSL handshake - Peer did not return a ceritificate

I am getting SSL Handshake errors with NRPE after enabling SSL. It worked perfectly fine without SSL doing check_nrpe. The allowed host is correct and when run without SSL enabled it shows the proper ...
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monitor Apache current downloaing files

I'm using Apache to allow users of my application to download required updates. I want to know are there any methods to understand which files are currently downloading and which IP is downloading ...
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31 views

Recording monthly network usage for a metered connection?

Comcast is enforcing a new data cap on some customers reportedly starting as early as next month, January 2021. I'm both a data scientist and a tenant under someone else's internet plan; I know I've ...
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27 views

sysstat sar only collects cpu usage

I'm running into a problem when using sar to collect live system statistics. When I run a sar command such as the following, I get the right output: $ sar -r 1 -o /tmp/memory_usage Linux 4.15.0-70-...
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110 views

sensors-detect warning on I2C/SMBus

sensors-detect has this warning : Lastly, we can probe the I2C/SMBus adapters for connected hardware monitoring devices. This is the most risky part, and while it works reasonably well on most systems,...
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58 views

How to get the task_struct of a pid?

I would like to get the task_struct of a process by his PID because I need the timing fields for a monitoring application. Is that possible without creating a module ? If not, is there a way to get ...
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469 views

CentOS: How can I see pure-ftpd server response logs?

My ftp user face error like this: FTP 127 Response: 500 I won't open a connection to xxx.xxx.xxx.xxx (only to yyy.yyy.yyy.yyy) This is the response of my server which captured by Wireshark in a ...
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early warning for HDD issues

I am using Linux Mint 20. % inxi -S System: Host: ismail-i5 Kernel: 5.4.0-56-generic x86_64 bits: 64 Desktop: Cinnamon 4.6.7 Distro: Linux Mint 20 Ulyana I have 3 HDD and 1 SSD. % lsblk NAME MAJ:...
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Stream changes in available memory

I've come up with the following command to check changes in memory use: free -s 1 -h | awk 'NR%4==2' This shows output like this: Mem: 125G 32G 82G 404M 10G ...
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Do “lookup ops” interfere with R/W ops?

On Solaris 11, and using ZFS, we monitor the IOPS of the filesystems in different datasets using: fsstat /apool/adataset/* 1 100 where apool is the ZFS pool containing a parent dataset adataset with ...
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monitoring data read/write speed to storage unit in linux

Running rhel 7.7 on a server having a dell powervault storage unit. I wish to test the read/write speed from my head node to the /data mount point which is NFS over infiniband. I want to to observe ...
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Is there a tool to monitor activity on mount point or directory?

I'm trying to find out why automount timeout does not kick in and need to detect any system activity that access a specific catalog or subtree, e.g the cifs mount point. My suspicion is that some cron/...
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How to Monitor Changes Within a File

I am looking to monitor content changes within a file and when that content changes, produce a notification displaying the new text. Details Let us say the file (connection.txt) contained only the ...
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Nagios core SNMP for VMware 6.7 [duplicate]

How to setups Nagios core SNMP configure for VMware vSphere 6.7. There is alarm trigger and pointing to snmp service option in VMware vcenter. Here I want to point to nagios core and monitoring. Can ...
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gkrellm: can you display a chart of the memory usage?

little background: I had some processes on a machine with 128GB memory that reported python memory allocation errors (the machine ran out of memory). My code only uses like 1-3GB memory... so I should ...
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24 views

How can I time a shell command n times and get some execution time distribution?

I have a shell command that I would like to time (e.g., a curl query). I don't want to time it once, but instead many times, so that I can get an empirical distribution of the execution time. How can ...
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Analyze the programs/commands frequency since boot up (command vs. PID histogram)

I would like to see which program got a PID most frequently and second frequently in my system since the last reboot. If I run top now, I can see the PID column and the COMMAND column but only for ...
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How to monitor running programs with open ports?

Ok, so I want to monitoring running programs on Debian. For example I have a running several program on my instance and I can get output of netstat -plnt and see what is program and their ports. ...
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How can I monitor command usage on a system, possibly outputting p8s metrics?

I'm trying to debug some usage of the iptables command. The idea is that I have a number of things changing and calling iptables, with parameters, and at different times that it's hard to get some ...
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51 views

Anyone know what this yellow titlebar is, and how to remove it?

Super+s (activities overview) got remapped to this and I can't seem to figure out how to change it back. This title bar shows up on the focused window when I hit Super+s, and then newly opened windows ...
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UNIX Resources. Exception occurred MSG 47193

I was attempting to add counter monitoring measures within the LoadRunner version 12.65 for Unix server resources. The server takes the log in, connects but then the LoadRunner Controller returns an ...
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Read output in bash from an interrupted perf stat

I am measuring the CPU usage of a running server process. I use a shell to run perf stat -p <pid> & to attach to the process, run some commands, and kill -INT the perf to get the result. The ...
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Status(UP/DOWN) of Session based Application hosted on Tomcat server in UNIX

I need to check the status (UP/DOWN) of an application (https://w45ra0377.abc.com:12345) that is hosted on a server in UNIX. This is a session authenticated application. I tried with the below CURL ...
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220 views

Get current network utilization via /sys/class/net

Playing around with some low level functions to monitor my system stats. I would like to get the current network utilization the same way like I can get cpu temp cat /sys/class/thermal/thermal_zone0/...
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187 views

How to trace DMA?

I am working on software that communicates with a PCI card through direct memory access (DMA) transactions. My programs use a suit of drivers and a library that handles the DMA. Everything runs on a ...

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