Questions tagged [linux]

Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.

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Using winexe on linux to start notepad on windows server

This question is related to running notepad on a remote machine. Server A: Windows Server 2019(user is administrator) Client B: Calling notepad.exe on server A and running it on the server A Window's ...
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Using linux vm with iptables instead of firewall resource

I'm trying to set up this architecture: https://blog.botframework.com/2020/11/23/bots-secured-behind-a-firewall-teams/ Instead of Azure Firewall I want to configure a linux machine with iptables. I ...
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clamav-daemon start condition failed, /var/lib/clamav/daily.{c[vl]d,inc} was not met

After installing Modoboa(Open Source Mail Hosting), I Tried to start clamav-daemon, but i faced start condition failed. systemctl status clamav-daemon.service clamav-daemon.service - Clam ...
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auditctl for missing files

I'm trying to record read access to missing files (unfortunately the application doesn't log such an info) and made a few,failed, tests with audictl. Scenario: I do not know the names of the files in ...
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How Linux system knows what files/subdirectories are under one directory [migrated]

I'm reading the book "Linux Kernel Development", and there are some important points: inode doesn't include filename. filenames are stored in directory entry(dentry). but dentry is not ...
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Extremely high incoming traffic on web server but no abnormalities in log files

Today we recorded extremely high incoming traffic (1 Gbps) on our Debian Webserver (green chart). On an average day it's at a maximum of about 20-30 Mbps. Firewall as well as fail2ban are configured ...
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Does LXC support XFS filesystem?

I am working on my local system and I want to run both docker and LXC containers. Docker provides storage options that only works with XFS to limit the storage volume inside containers. But that ...
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25 views

Iptables Forward All traffic to different interface except local inter-lan

I have Two LAN Local LAN: 172.30.30.0/24 with gw 172.30.30.254 Remote LAN : 192.168.2.0/24 with gw 192.168.2.1 both lan can communicate and ping each other devices. i have introduce new machine 172.30....
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Identifying the spam source on my Centos6.9 smtp sendmail server

The server has also httpd with PHP services running I did read the guide here: https://a1websitepro.com/find-track-filthy-spammer-block/ I did install EXIM My client complains they never had this ...
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Can point-to-point TUN interfaces have different MTU?

I'm developing a custom VPN server for Linux. On the server side I set MTU of created tun interface to 1480 using ifconfig tun0 mtu 1480. And, on the client side (Android phone) also MTU of tun set to ...
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Multicast not received when socket is bind to bridge interface on linux

I have bridged eth0 and eth1 to br0 on a linux system. No other interface on the system, only one default route. I want to receive mutlicast traffic with a gstreamer udpsrc. When setting the interface ...
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Quickly install multiple puppet modules from directory

Is there a way to install multiple puppet modules from a directory in one command? I have a directory containing multiple puppet modules in tar.gz form downloaded from the forge, and I need to install ...
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OEL8 kickstart install on ESXi - hangs at “Reached target Basic System” - why?

I am trying to install OEL8 on ESXi 7 with a kickstart file. I have the ks.cfg hosted on an http server on the local subnet. The ks.cfg settings are taken from a manually installed OEL VM's anaconda-...
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Access disk io data in linux without tools like iotop/iostat to find processes or files with IO

We have regularly high load average. With the help of a zabbix agent, I could narrow it down to be mainly because of cpu iowait (and lastly disk io). I am not allowed to install any additional ...
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How to add unallocated free space using shell in Centos?

I have some free space unallocated and this problem affects more instances. Number Start End Size Type File system Flags 32.3kB 1049kB 1016kB Free Space 1 ...

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