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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2
votes
2answers
496 views

Is there a way to get “top” to run exactly once and exit?

I find the output of the shell command top to be a simple and familiar way to get a rough idea of the health of a machine. I'd like to serve top's output (or something very similar to it) from a tiny ...
3
votes
1answer
2k views

Accounting for /proc/net/dev reported traffic

I noticed that according to /proc/net/dev I am constantly receiving around 6Kb/s on my wireless usb interface. But I can't account for anything even close to that with the individual connections that ...
0
votes
0answers
9 views

Measure data submited to a blocked ip adress in iptables

With: sudo iptables -A INPUT -p all -d $ip -j DROP One can drop all packets submitted to an ip adress (or a range of ip adresses). This method is useful if you want to prevent applications from ...
1
vote
0answers
13 views

Passing a parameter to a dstat plugin

I wrote a simple plugin (dstat_externalBackup.py) for dstat to monitor the filesystem free space and placed it in /usr/share/dstat and it works as intended. € dstat --externalBackup 3600 extern free ...
2
votes
2answers
49 views

How can I start a file-processing daemon? [closed]

How can I run a script-based tool which will process files continuously downloaded to given directory as they arrive? I'd like to minimize delay (~1 second is OK), script can have own infinite loop. ...
2
votes
3answers
3k views

Cron job to check if PHP script is running, if not then run

I am wondering if someone might point me in the right direction. I've got little experience working with the Linux command line and recently due to various factors in work I've been required to gain ...
1
vote
0answers
10 views

Is the perfmon2 tool obsolete due to the same functionality being included in the current Linux kernel?

I was having some issues with the PAPI tool and multiplex and this answer by the PAPI creator led me to check out perfmon2: http://lists.eecs.utk.edu/pipermail/ptools-perfapi/2008-April/000900.html ...
2
votes
2answers
545 views

How can I prevent smartd from reporting that it cannot find a disk?

I have smartd monitoring my hard drives. It works fine generally, but the following error window has been consistently popping up every 24 hours. This email was generated by the smartd daemon running ...
0
votes
1answer
30 views

How many interrupts and context switches good for the server?

Munin has chart 'interrupts and context switches on the system'. As far as this is a monitoring tool I assume these values are important for the server performance. So, the question is: how can I ...
1
vote
1answer
33 views

Monitor a hard disk partition

I need to monitor a partition on a CentOS server (/, to be exact) and would like to be alerted when it is full or full to a certain percentage. What is a simple way (using built-in tools) to ...
15
votes
7answers
27k views

GPU usage monitoring (CUDA)

I installed CUDA toolkit on my computer and started BOINC project on GPU. In BOINC I can see that it is running on GPU, but is there a tool that can show me more details about that what is running on ...
1
vote
1answer
1k views

SMTP connectivity issue in Zenoss (“Connection unexpectedly closed”)

I am using Zenoss for monitoring purpose. I have been using its mail service for a long time. Suddenly my mail service in zenoss stopped and started showing <class ...
1
vote
2answers
35 views

Log and plot temperature-time curve over given time intervall

How can I log and plot a graph of all available hardware temperatures (CPU, SSD, etc). CPU load over a given time (say a day or a week) in linux? The CPU is i7 haswell if this matters, I have ...
7
votes
4answers
20k views

Bash script to detect when my server is down or offline

Background : I need to receive an alert when my server is down. When the server is down, maybe the Sysload collector will not be able to send any alert. To receive an alert when the server is down, I ...
37
votes
6answers
55k views

How to monitor CPU/memory usage of a single process?

I would like to monitor one process's memory / cpu usage in real time. Similar to top but targeted at only one process, preferably with a history graph of some sort.
1
vote
2answers
78 views

In Linux 'top' command, is there any way to keep track of values?

I'm using the Linux "top" command to monitor %CPU of particular process. As the values keep on changing every few seconds, is there any way to keep track of values in a separate file or as a graphical ...
1
vote
0answers
21 views

Does orca + RICHPse work on Solaris Containers or local zones?

I have just attempted to get RICHPse version 3.4 running on a Solaris version 10 Sun M5000. It seems to run on the global zone but not on the local zones. On the local zones RICHPse just fails ...
23
votes
5answers
18k views

On-the-fly monitoring HTTP requests on a network interface?

For debugging purposes I want to monitor the http requests on a network interface. Using a naive tcpdump command line I get too much low-level information and the information I need is not very ...
5
votes
2answers
337 views

How to measure PCI-Express bus usage?

I'm looking for a way to find out if PCIe bus is the bottleneck or not. It's not a problem to measure how much bytes was transferred through any particular NIC: Is there a way to find how much ...
2
votes
1answer
50 views

How to track down the source of I/O spikes?

I am using Linux as a desktop, and keep getting seemingly random I/O Spikes. The machine becomes unusably slow. At first I thought it was just that I don't have enough memory. But looking at the ...
1
vote
0answers
28 views

How can I get read/write instant speed of a Hard Drive using /proc/diskstats data?

I know that the proc/diskstats file presents these data columns: 1 - major number 2 - minor mumber 3 - device name 4 - reads completed successfully 5 - reads merged 6 - sectors read 7 - time spent ...
0
votes
1answer
38 views

How does the proc/diskstats work to present that values? And for proc/stat and meminfo?

I am trying to get the diskstats data by same way that the file does. Is there any way to reach that values without reading that file? How the values are placed there? Is there any ".c" file that ...
5
votes
4answers
418 views

Needed: A simple way to remotely monitor a process on my server

I have a cloud-based server running a Java process (a POP/SMTP server called davmail, details don't really matter). What is the simplest way to monitor the status of that Java process remotely? I ...
2
votes
8answers
1k views

Linux server monitoring software

The dedicated server I'm looking after started to crash occasionally, I suspect because of overload, so I need some performance/resource based monitoring software, preferably with web interface, ...
1
vote
0answers
27 views

Program like vnStat that filters for only external (Internet) traffic

I've been using vnStat to monitor the ethernet interface on a Linux computer, but found that it includes all local traffic. I do many file transfers from within the subnet which far exceeds the ...
2
votes
0answers
43 views

How can I monitor the interactions of an application with dbus?

I think the title says it all. I have a set of applications, I want to montior any and all interactions of the applications with dbus. The things I've played with don't seem to have a way of focusing ...
1
vote
0answers
40 views

Why doesn't monit like this syntax

I am trying to setup monit for my debian server. I have a main monitrc file in /etc/monit which at the end has include /etc/monit/conf.d/*. In conf.d I have two files for my apache and mysql servers: ...
5
votes
2answers
9k views

Linux : See CPU usage by a process for the last second

vmstat 1 Above will print virtual memory statistics each seconds. It will also show the CPU utilization for last second. I have a web server at hand which runs httpd and MySQL. I need to find how ...
0
votes
1answer
38 views

Create and report system acivity

I have a set-up a server running several applications. There will be multiple people using these applications in a community situation. I am looking for a way to track and report changes made to ...
3
votes
2answers
302 views

Monitoring process activities using system calls only (without utilities like `top`)

I want to obtain information about memory used by different users and different processes which users are running and statistics about those processes like memory consumption, execution speed, etc., ...
3
votes
1answer
139 views

CUPS and printer security

I would like some help on securing a networked printer. Specifically, I'm interested in the following: Preventing unauthorized access to the printer: I would like only certain laptops that connect ...
1
vote
1answer
28 views

Total data usage history with SNMP

I am working on a project to monitor the network devices by the help of SNMP and MRTG, RRDTool. As part of bandwidth monitoring, I can be able to get the maximum used bandwidth per time resolution. ...
1
vote
0answers
32 views

mrtg configuration

I installed mrtg and want add CPU, Memory graphs of local machine (not router) . Traffic graphs page working properly.Tried to find tutorial how to do that but: I do not have mrtg dir on /etc to ...
1
vote
1answer
42 views

Monitoring tool without web interface

I need to monitor a Linux server. I'm searching for a monitoring tool able to store system information (CPU, RAM disks usage, Apache and Postfix status, etc.) throughout the day and send an email ...
3
votes
1answer
126 views

How to find which process is currently writing to the disk?

For some unknown reason there is no space left on my /, even 5 minutes after removing 300 MBs of junk packages, there is no space left again. So I've come to conclusion that there is some process that ...
0
votes
2answers
20 views

file creation and acces monitoring app [duplicate]

I remember long time ago I had some antivirus on windows which had wile accesses monitor, and could tell you if any process accesses a file.I need to monitor every file in my home folder(or any other) ...
3
votes
2answers
55 views

How does one determine when a process or machine is IO bound?

I have a node.js process which writes to many different sqlite databases. Sqlite can handle only one concurrent write per database, which is fine since there will be only one write per database at a ...
2
votes
1answer
73 views

monitor multiple pids with top

I want to monitor memory usage for several processes and came up with a command like this: ps aux |grep -e postgres -e unicorn -e nginx|cut -d' ' -f2|for i in $(xargs); do echo $i; done 16112 16113 ...
1
vote
1answer
54 views

How can I plot disk io per process over time

I would like to analyze and visualize the disk through put of certain processes over time to see how much data is written to disk and to see at which times a process does not utilize the whole disk ...
-1
votes
1answer
51 views

Alternative for psutil for ARM processors (raspberry pi) and python3

As I am unable to install psutil to work on raspberry pi on python3, I am looking for any alternative (or a proper way to install it). What I want is to be able to see what's the status of the ...
2
votes
1answer
81 views

Linux: monitor my own internet usage page by page

I have a monthly broadband subscription which rolls over on the 23rd of each month. I had arrived near the end of my usage so I was carefully checking that I didn't go over my limit - they crucify you ...
4
votes
3answers
450 views

Run command automatically when files are copied into a directory

I have two folders called: A and B, in different paths on the same computer. When I add any new file(s) into folder A, I want to copy it to folder B automatically. My folders: /auto/std1/nat1/A ...
0
votes
0answers
15 views

logging file system events (like read, write, access file/directory) [duplicate]

I want to get file system events on my arch linux local host, and don't get how to make it. I want to tail throw the logs of file system events to see what processes making changes to my system in ...
1
vote
4answers
6k views

monitoring file changes + process access to files

I would like to see what's happening in my app server folders, which files are changed by process x or which *.war files has been changed (replaced/created) in last x minutes. I am software developer ...
0
votes
1answer
25 views

Historical bandwidth data in a console? (save/load statistics)

So, I found that nload and iftop displays the amount of data that passed and how fast. Now, is there anything like those that can save/load statistics? I want to measure the amount of data I download ...
2
votes
1answer
409 views

With NIS users, how to find out which users are currently logged in?

I'm using a NIS server to control 100 clients. I'm using NIS for centralized authentication and NFS to share the home directory. The main problem I'm facing is that I cannot find out which users are ...
1
vote
0answers
31 views

loggedfs crashes system with “access: Transport endpoint is not connected”

I'm trying to use loggedfs to monitor my system changes, and it works great for some time, but then, eventually, it crashes and my fish shell starting to output "access: Transport endpoint is not ...
0
votes
0answers
18 views

Cycle http requests monitor

How I can monitor cycle http requests by linux and store IP which scan my site? I need to find all scanners with copies of my site content. example. If IP 192.168.1.1 open index.php every 1 minute, - ...
3
votes
2answers
345 views

PBS equivalent of 'top' command: avoid running 'qstat' repeatedly

When I run several jobs on a head node, I like to monitor the progress using the command top. However, when I'm using PBS to run several jobs on a cluster, top will of course not show these jobs, and ...
0
votes
1answer
27 views

Solaris prstat - definition of “recent” time used in percentages

The man page for prstat (on Solaris 10 in my case) notes that that CPU % output is the "percentage of recent CPU time". I am trying to understand in more depth what "recent" means in this context - is ...