Questions tagged [linux]
Linux is the generic term for a UNIX-like open source operating system based on the Linux kernel.
38,966 questions
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Monit not detecting sleeping processes even though uptime rule triggers [closed]
I need to automatically end processes running for more than 24 hours on a CentOS 7 server. I’m using Monit to detect long-running processes and execute a custom script.
To test it, I reduced the ...
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What reason for application (SOLR) having its own timezone setting, and why would it still be different?
I have installed Apache SOLR for audit use with Apache Ranger. The config file (solr.in.sh) has a timezone setting, which defaults to UTC, but I have it set to Europe/Bratislava the same as the host ...
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chrony refclock "not valid age"
I have a system that take GPS time as the only source. An issue of the system is that it would set time to 2024 which is one year early from now when doing a full reset which then trigger the "...
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Determine the IPv4 pMTU to/from a system behind a NAT with directional information
Is there an easy way to determine the IPv4 pMTU (path MTU) between two Linux systems, when one of them is behind a NAT and determine in what direction packets are being dropped and where? I have root ...
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Where did my swap go?
We're running OEL8.9. I'm consistently seeing 40% of swap in use (3.1Gb out of 7.6Gb):
total used free shared buff/cache available
Mem: 62Gi 1.8Gi ...
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Cannot access self hosted website (port 80/443) from same LAN network using domain name, works from outside or using LAN IP address [migrated]
I am unable to access my website when I am connected on same network. From outside anyone can access it with no problems.
Provider: Vodafone with static IP address for business, all needed ports are ...
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Permission denied writing to NFS with same owner and ACL
I'm running a rootless podman container where I mount an NFS4 volume.
Writing to NFS works
Inside the container, I can move a directory that is not in NFS into NFS, and it also works
But if I move to ...
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Port knocking in Almalinux 10?
(First, please excuse me. Not a professional sysadmin, just someone who has had to set up a VPS recently).
I recently set up a new Almalinux 10 box, and I wanted to add port knocking to it to further ...
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Can't get iptables redirect rule working
I have a network router with this linux firmware:
Linux SNR-CPE-ME2-SFP-Lite 3.4.113.185 #1 SMP Wed Mar 19 13:55:06 +05 2025 mips GNU/Linux
I'm trying to set up a traffic redirection for a single ...
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`needrestart` doesn't ignore service
For some reason (probably a python dependance), needrestart marks openhab.service as a candidate to restart. I want that service to be ignored.
Following an answer on StackExchange (How to make `...
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After reboot of the PC dnsmasq service doesn't load dns-servers from /etc/resolv.conf
systemctl status after reboot of the system:
Nov 28 19:16:07 my-debian systemd[1]: Starting dnsmasq.service - dnsmasq - A lightweight DHCP and caching DNS server...
Nov 28 19:16:07 my-debian dnsmasq[...
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Output of "last" command is corrupted
The output of last appears to be corrupted in Ubuntu server 24.04. Particularly, the first character of every line is truncated. Additionally, I noticed that new logins are not being recorded. Here is ...
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copy/duplicate remote VPS to a new server, some questions
I want to duplicate my current VPS to a new home with the same provider. And I would like to avoid, if possible, to transfer the disk's contents to my local desktop and then back again to the new ...
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Is it possible to tunnel IPv6 over IPv4 using Libreswan's IKEv2?
My local server only accesses the internet via IPv4 addresses. IPv6 is not supported.
The remote server has exactly one public IPv4 address and a /48 IPv6 subnet. Is it possible to provide the local ...
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ospf bird - mikrotik7 not working static
Network [VPS-Linux-Bird 2.17.1-1 ] <-two liks gre-> [Mikrotik 7.20] <-l2tp-> [Mikrotik 7.19] <-l2tp-> [ same VPS-Linux-Bird 2.17.1-1 ] <-l2tp-> [Other router eg 192.168.194.125 ...
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