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
56 views

High Availability of Services

I want to monitor a couple of services in linux. In case they go down I want to restart them. I'm writing a crontab which will get the name of the services using jps command every 60 seconds, and if ...
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0answers
34 views

Monitoring Linux Machines [on hold]

I have a couple Linux machines and VMs at home that I want to monitor. Basically, what I would like to do is setup a web page that display's information such as CPU/RAM usage, Uptime, IP Address etc. ...
0
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1answer
15 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 ...
2
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1answer
6k views

What is the difference in CPU utilization between 'ps aux' and 'ps -ef'?

I use Ubuntu 12.04.1 Linux. I see a difference between %CPU and C output format of ps command for a process. It is not clearly noted in the ps man page. Man pages says: CODE HEADER ...
5
votes
3answers
503 views

On a Linux system, see how busy is file system

I want to know of a command that will show me how (currently) busy is the file system. I'm assuming there exists such a command that will show me this. With such command, are there specific arguments ...
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0answers
26 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
56 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
34 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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5answers
6k views

Is there a tool that allows logging of memory usage?

I want to monitor memory usage of a process, and I want this data to be logged. Does such a tool exist?
29
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6answers
28k 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 ...
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0answers
12 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 ...
2
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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 ...
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0answers
16 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 ...
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1answer
38 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 ...
0
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0answers
22 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 ...
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1answer
851 views

Cannot add host to icingaweb2

I installed Icinga2 and icingaweb2. I have the dashboard, view of hosts, services, etc. I can log in, log out, etc. Ok, now I want to monitor something. So I added a host to ...
3
votes
1answer
42 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 ...
9
votes
4answers
17k views

What can I use to monitor and log incoming/outgoing traffic to/from remote hosts?

I run a web server (Debian Squeeze on a VPS), and the graphs provided by the hosting company show consistently that around twice as much traffic is incoming to the server compared to the outgoing ...
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5answers
1k views

Monitoring activity on my computer.

So recently I found that someone has been using my computer without consent, browsing folders, etc.... I could change all my passwords straight away, but I'm curious as the what the intruding party ...
3
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1answer
3k 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 ...
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2answers
108 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
293 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 ...
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vote
1answer
32 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 ...
36
votes
5answers
65k views

Script to monitor folder for new files?

How do I detect new files in a folder with a bash script? I would like to process the files as soon as they are created in the folder. Is this possible to do so or do I have to schedule a script with ...
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1answer
23 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 ...
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0answers
21 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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1answer
25 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
27 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 ...
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1answer
20 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 ...
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0answers
101 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 ...
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0answers
26 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 ...
0
votes
1answer
32 views

How to Find Non-Responding Applications in Linux

I'm looking to migrate a monitoring script from Windows (Powershell) to Linux (Shell script). One of the things I check in Windows is whether an application is 'Not Repsonding'. (e.g. Open Task ...
2
votes
1answer
75 views

iotop showing 1.5 MB/s of disk write, but all programs have 0.00 B/s

I don't understand iotop output: it shows ~1.5 MB/s of disk write (top right), but all programs have 0.00 B/s. Why? The video was taken as I was deleting the content of a folder with a few millions ...
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0answers
40 views

Linux, LAMP, & Nagios server

as i'm somehow new in linux, and i'm required to install a monitoring system to our company using CentOS7 with LAMP & the monitoring Application NAGIOS. after installation everything goes well, ...
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votes
3answers
512 views

Is there an equivalent to systat in Linux?

Is there an equivalent to the amazing systat command in Linux-based operating systems? For those who don't know about it, the BSD's systat command is just amazing. It displays live graphs of network ...
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2answers
23 views

How to find out contention

I'm looking for an easy tool, to graphically show the amount of resources being used realtime. Something like htop but with disk IO, memory and network usage as well. I tried ganglia and the fact ...
2
votes
1answer
48 views

Is there a way to detect whether a screen is in on/off/standby mode from within Linux?

The screen in question is HDMI. The power off/on action is initiated by clicking on the on-screen capacitive button. I just need to know if there is a way to get events like "now the screen is on", ...
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1answer
30 views

Linux - wrapper to monitor an application's file access?

Are there any user-level wrapper-like scripts/programs that can watch what files an application accesses, without impacting performance? I'm trying to capture what files are produced by an automated ...
29
votes
4answers
64k views

Can I change root's email address or forward it to an external address?

I'm getting a lot of mail in my root user's mail account. This appears to be mostly reports and errors from things like cron scripts. I'm trying to work though and solve these things, possibly even ...
2
votes
3answers
78 views

How to list all linux processes that had any network activity during some period of time (past or future)?

I'd like to know which processes use the network: To inspect if any unknown to me (and potentially malicious) programs on my system use the network; To learn the amount of network traffic by the ...
6
votes
1answer
12k views

Tracking what commands were executed after sudo to another user

I have provided sudo to ten users to become another user like nsup. I want to track which user executes which command after they become nsup. If there is a way to store the log files in a common file ...
1
vote
1answer
67 views

Zabbix: HTTP service is down

I'm configuring Zabbix to monitor our servers. Zabbix is new to me. It is up and running, and monitoring works for some services. One of our Centos servers has http running, so it seems logical to ...
15
votes
7answers
6k views

Process Monitor equivalent for Linux?

Is there a Unix/Linux equivalent of Process Monitor, whether GUI or CUI? If it makes a difference, I'm looking at Ubuntu, but if there's an equivalent for other systems (Mac, other Linux variants ...
0
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1answer
37 views

Accounting of filesystem accesses

Is there any way to keep track of number of times each file system is accessed through system calls? I know that the super block will contain the details about the file system. But how can we access ...
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2answers
113 views

See progress in Files (Nautilus)

I am trying to copy a directory containing multiple subdirectories and files to an external drive. It is taking a long time (24+ hours). I copied in Files on Fedora 23 instead of cp -v on the ...
3
votes
3answers
3k views

Monitoring HTTPS traffic using tcpflow

I would like to use tcpflow to monitor https requests. I have read tutorials on how to monitor http traffic but when I connect to a host using https the output is garbled. I am using tcpflow in the ...
0
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0answers
14 views

How to monitor system, Database Query Values, and the Existance of Files?

I was looking through an old system today, and it had this monitoring software that could send out email alerts. It's very old, but it still seems interesting and useful. It allowed for monitoring ...
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3answers
69 views

Bash script to monitor server security?

I am using a shared server at HG and I want to automate a bash script that will run hourly once and notify me to my gmail account with details of authorized/non-authorized users who have logged into ...
4
votes
2answers
251 views

Monitor a program's I/O

I have a program which spawns several child processes. I want to know which files this program and its children are creating, deleting, and modifying. inotifywait can tell me which files are being ...
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1answer
10 views

What is the proper way for a sysadmin to be notified about each user connection and disconnection?

In order to watch a machine, I'd like to be notified for example by e-mail each time any user connect to or disconnect from the machine (even root)? It is a Linux machine, but I am also interested if ...