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Questions tagged [logging]

The act of recording actions, requests, and other meaningful data in a computer. Often used for troubleshooting kernels, servers, etc.

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kube-controller-manager is not appearing on Google Kubernetes Engine

Folks, I am using Google Cloud Kubernetes Engine. I want to browse through some of the logs that should be available namely kube-controller-manager logs. I am certain I have done this recently on the ...
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1answer
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Is there any way to delete logs of a specific systemd service in linux?

After searching a bit, all I got is journalctl --vacuum-time.... However, this command doesn't delete service logs. So, how can I safely delete logs of a specific service from linux?
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Linux log grows large, resets, does it again

Am running Ubuntu 18 and don't have a ton on their for apps. The hardware is setup with one 120gb SSD as root/boot and the rest of the drives as 2 pair of raid drives where media files, etc... reside. ...
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Docker not logging out anything from spring boot app

So I'm running a spring boot app in a docker swarm on Amazon (using Docker for AWS) and I'm having this persistent issue where I can't get any logs from the app. Docker for AWS is set up so that the ...
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+50

Redirect GoogleSoftwareUpdateAgent Logging

I am debugging an issue on my Mac and I am therefore looking through the system logs. One thing I have noticed is the extreme abundance of multi-line messsages from GoogleSoftwareUpdateAgent like the ...
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1answer
11 views

Log ROBOCOPY Results only

I'm using ROBOCOPY to create a mirrored backup of a directory, to a removable SSD. The copy executes, but I'd like to keep a log of only the results, each time the script runs. Like the result below....
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13 views

Where can I find logs to work out why Windows Simulator self-quits?

When I run Windows Simulator it spins the five blue dots on a black background for a while and then exits silently. However, if I create a new user then that user can launch Windows Simulator without ...
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1answer
14 views

Redirecting the output of service in Ubuntu to Log files

I am on Ubuntu 16.04 and deployed a service in /etc/systemd/system. The service file booster.service contains [Unit] Description = booster After = network.target [Service] ExecStart =/opt/tech/...
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1answer
15 views

Show homebrew upgrade information again

When upgrading a package with homebrew, there are several information shown e.g. breaking changes or things to do after installation. Is it possible to show this information after the upgrade again? ...
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Evince and large thumbnails in Ubuntu 16.04

What are the policies of the Document Viewer (Evince) for creating large thumbnails in .cache/thumbnails/large/? Does Evince create a new large thumbnail in this folder whenever a new file is opened? ...
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18 views

How can I fetch data from Zeitgeist?

I am trying to determine when the previous reboot of Ubuntu 16.04 occured. That happened several months ago. Unfortunately, wtmp files are too short, so last reboot does not work. On the other hand, ...
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1answer
22 views

Recovering evince session in Ubuntu 16.04

How can I recover documents which were open in Evince prior to a system crash in Ubuntu 16.04? Ideally, I would like to find a list of files which were open just before the crash. At the least, I ...
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1answer
17 views

Reboot history in Ubuntu 16.04

I am trying to recover after a crash of Ubuntu 16.04. The crashed session had been up for several months. Unfortunately, wtmp logs are updated every month. Where can I still find the reboot history, ...
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1answer
152 views

Removing near-duplicate rows in Filemon / Process Monitor to more easily analyze OS operations

Process Monitor allows great power when it comes to filtering, but it doesn't do something which seems extremely simple and beneficial, which is to simply allow the option to remove rows which are ...
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1answer
34 views

How do I redirect system console output to a file?

I'm dealing with a strange issue that's causing the CPU to halt on a machine when a certain piece of hardware is used. The CPU freezes, the machine reboots, and there is no account of what happened ...
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1answer
52 views

How to access system logs [closed]

I need to find large amounts of text to provide data for a ML model (essentially for testing). I thought accessing various system logs could be interesting. So far I have tried playing around netstat,...
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1answer
28 views

Is it safe to remove read rights from all /var/log files for others?

Am I supposed to be able to revoke read access recursively to /var/log/ for others or will it break some applications which rely on being able to read from /var/log/ with other rights?
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CentOS 7 is not logging to files anymore

my CentOS 7 Server is not logging to messages or maillog anymore? Restarted rsyslog and systemd-journald - nothing changed - both services are running. Hope someone could help me what to check.
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3answers
60 views

How to record stdout and stderr with different tags in syslog?

I can redirect both stdout and stderr to logger this way: ./myprog 2>&1 | tee /dev/tty | logger but I would like to be able to tag each log entry with "myprog-out" and "myprog-err" based on ...
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0answers
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When SSH logs say something like “message repeated 5 times” does it include the first message above it?

While reading through SSH logs, I saw messages that looked like this: Oct 16 02:29:11 machine1 sshd[1980]: Failed password for root from 61.177.172.52 port 33926 ssh2 Oct 16 02:29:25 machine1 sshd[...
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2answers
35 views

How to find out what application has been running

I just saw a new application appear briefly on taskbar and disappear immediately, without any input from me. How do I find what it was? What logs should I look at?
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2answers
57 views

Adding Up All Values In A File

I have a massive 313,000 Line log that looks like below. I'm trying to find a quick way to add up all the Player Online: (number)/100 . So just basically add all the (Number) together. Example Of ...
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TightVNC: How to list all connected users

I'm using TightVNC (Version 2.8.5) to connect to machines. While using it the clipboard between my Computer and the remote Computer is transfered in both directions. I need that function, so it's ok ...
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Use iterm2 or terminal app which can filter results, not just highlight results

Right now I am on MacOS, and I am using iterm2 as my terminal app. It's got some great features but one limitation is that when I use ctrl-f to search for something, it will highlight the results in ...
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0answers
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Is CD tray opening and closing activity natively logged in Ubuntu 14?

I had a CD that I was working from in my workstation and want to know if the tray was opened by anyone else while I was away. Does Ubuntu natively log CD tray opening and closing activity? If so, ...
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1answer
39 views

Journald not logging custom fields on debian

I have the following script that I run on both an Arch Linux machine as well as a Debian stretch machine. On the Arch Linux machine I'm able to find the random value that was logged, whereas I can't ...
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17 views

Sending Client Logs to Remote machine with exact file name and messages using rsyslog 7.6.1

I am working on a project where I need to harden the OS before going to deployment up and live. One of the steps involved to set up the remote log server to collect and log from the deployment machine....
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1answer
23 views

Can iptables change its rules based on the network you're currently in?

Does iptables have a way to automatically adapt some of its rules or just straight out switch which rule sets it's using based on what your current network is? I have a lot of uses for something like ...
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0answers
15 views

How do I filter chrome network log to show real xhr requests instead of “OPTIONS”?

When jquery makes a request to get data from a remote api, chrome records this as TWO entries in the network log - an OPTIONS call that has no arguments and no response, and a GET (or POST or whatever)...
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0answers
26 views

How to run sudo lnav and with user defined formats?

I have installed lnav as snap package according to these instructions: http://lnav.org/downloads/ sudo snap install lnav I have made couple of proprietary log file formats for inhouse developed ...
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0answers
74 views

Exclude postfix log from syslog / journald

Is it possible to configure journalctl to exclude certain sources, like postfix, from the system log? Or can I exclude postfix messages from the system log by specifying another syslog facility (...
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1answer
440 views

wireslessproxd flooding my system log

Due to a disk problem i ended up in system.log today, only to find that about every 2-3 seconds the following information gets dumped into the log: default 10:51:07.210542 +0200 wirelessproxd ...
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3answers
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Can my employer see websites viewed on personal phone using corporate Wifi?

I have a question that no one has been able to answer properly on the net. If I use a personal iPhone, connected to my company’s guest WiFi, and browse to, say, https://google.com/news, does my ...
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Is it possible to obtain the history, file, path information, and other evidence for files that Avira quarantines?

Avira Free Antivirus detected a suspect trojan in a file and quarantined it. Now I want to examine the folder where the file came from. But Avira's quarantine menu does not identify the full path or ...
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1answer
76 views

How to know which files were not transferred when copying large amount of files fails due to path length?

I was trying to copy a large amount of data from one drive to another drive in order to back it up. I did this simply by CTRL+C the top-level directories I wanted from one drive, then CTRL+P in the ...
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Log watching in less

Let there be a log file, call it /var/log/example. As usual, a service continuously outputs lines to that file. I want to watch this file's contents in real time using less (or equivalent). I am ...
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1answer
26 views

How do I log syslog to virtual console from systemd?

This fails: $ cat /etc/systemd/system/getty@tty8.service.d/override.conf [Service] ExecStart= ExecStart=-/usr/bin/tail -f /var/log/syslog Aug 2 11:28:22 darts02 tail[317]: Aug 2 11:28:18 darts02 ...
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1answer
36 views

How to limit a log-file to last N lines?

I have a ./program which outputs lots of logging messages and also having very limited storage space on my VPS: I would like my log-file to contain only the latest N lines all the time (or rather ...
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0answers
411 views

Windows Server 2016 - enable SMTP logs

Does anyone know how to enable and view the SMTP logs on Windows Server 2016? I could not find any information on Google. I am getting this message from a client Email: Login denied on host smtp://...
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1answer
170 views

Log rotation with compression?

I'm running a process on Linux (CentOS 7) which produces a lot of output on stdout. Sending it all to a file will result in a file size greater than 1 TB. But happily the output is quite compressible -...
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1answer
84 views

sshd log line format

As maddening as it is, I can't find the SSH server log line format anywhere... Specifically, my problem is that I know I'm being attacked, my log is full of lines like this: Jun 26 08:55:51 ...
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32 views

unable to find the end user in dns logs for .Onion query

hie I have facing issue while anaylyzing the DNS logs obtained from the DC, my objective is to find out the end user who request for the specific domain (onion domain) , I have enabled the DNS ...
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0answers
55 views

BBEdit log file highlighting whole lines

I like BBEdit, and I'm trying to figure out if it can do this kind of syntax highlighting for log files. There is a built-in language module for "Log File", but it never highlights anything at all. ...
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0answers
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How to tell if logs are actually rotating?

I am running an Ubuntu 16.04 server with apache2 installed. I have been looking at the items in /var/logs/ and it seems like some of them are growing beyond the limits setup in the logrotate files. ...
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0answers
531 views

IMRemoteURLConnectionAgent MacOsX High Sierra

I would like to understand some logs on my Mac. I have lots of lines saying the IMRemoteURLConnectionAgent is talking to some address, or host. Like this: received message from peer(293): <...
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26 views

MacOSX iogdiagnose-last.bin file

I am trying to understand some files on my MAC. On Console there is a /var/log/displaypolicy/iogdiagnose-last.bin encrypted file. Could not find any reference online. Anyone can help?
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1answer
198 views

The log files are empty

I found out that my /var/log/messages is empty! Also my /var/log/auth.log is also empty! Also it is not logging any messages. My /etc/rsyslog.conf file is as follows: # /etc/rsyslog.conf ...
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314 views

How to view audit logs on the nfs server

I'm trying to do a nfs share. I've configured the share. Now I want to view the logs associated with the files in the nfs share. I've created a centralized log server. I don't know the difference ...
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142 views

How do I keep track of unauthorised login/file operation events in a Synology NAS?

So as the title states, I am wondering if there is an option to keep track of unauthorised events, such as: failed authentication due to invalid credentials (e.g. AFP, NFS, etc.) failed file ...
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1answer
269 views

System logs written to an NFS mount

Today we had an issue with a Linux server that filled (100%) it's entire root (/) partition due to a misconfiguration in postfix that led to a huge /var/log/syslog file and yesterday we started using ...