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2 votes
1 answer
5k views

CentOS7: su /bin/bash: Resource temporarily unavailable

Whenever I try to change to testuser, I get resource temporarily unavailable message. The nproc and nofile limits are set to 65k. testuser runs multiple java programs. Did not exceed the nproc and ...
10 votes
2 answers
17k views

How do I use OpenDKIM with multiple domain names on a single server?

How do I use OpenDKIM with multiple domain names on a single server? I own 3 domain names, and I have a single server that's running postfix for sending email. How do I use OpenDKIM? Can I use the ...
-1 votes
0 answers
33 views

What would happen if we double the GPUs while halving the VRAM? [duplicate]

My employer asked me to choose a graphic card for deep learning purposes like NLP and vision domains. What is the difference between a graphic card with 16 GB vs 2x 8GB VRAM on same hardware, ...
1 vote
0 answers
9 views

Grafana - Have a View Panel button on email notification

I'm switching from Grafana 8 with legacy alerting to Grafana 10.3 with the new unified alerting system. I'd like the email notifications to have buttons to access the dashboard and panel linked to the ...
0 votes
0 answers
14 views

WildFly deployment fails due to 'unable to build Hibernate SessionFactory' - how to retry automatically?

In a customer's environment, updates are scheduled to run on several servers at nighttime, each time this happens our WildFly application is not recovering until I reboot the application server itself ...
5 votes
2 answers
18k views

postfix NOQUEUE: reject: RCPT from 454 4.7.1 Relay access denied

PS: I seem to have solved this issue by adding all my domains to $mydestinations. I still do not understand why virtual_alias_maps seems to be ignored when looking for valid mydestinations. After ...
1 vote
1 answer
10k views

Trouble with DNS resolution on and Microk8s cluster

My microk8s cluster is running on a centos8 vm and I have some issues with DNS resolution of my pods. Nameserver are at x.x.x.101 and x.x.x.100 both are ping able from within the pods and I can also ...
0 votes
0 answers
13 views

What does Windows performance counter ASP.NET\Requests Current mean?

In Windows Performance Monitor, I can add a counter named ASP.NET\Requests Current. In our application, we use this counter to keep track of whether there are still ongoing requests or whether the VM ...
0 votes
1 answer
26 views

ssh prompts for password despite gcr-ssh-agent

I'm trying to set up GNOME-Keyring such that when it is unlocked after login, it will also allow me to use my SSH key, which is encrypted. This is a Debian 12 system. The key in question is an ed25519 ...
0 votes
0 answers
15 views

How to handle CNAME requirement for zone apex DNS record in AWS Route53 and Cloudflare

It is not possible to create a CNAME for the apex zone in Route53 - it violates RFC. Route53 provides for an ALIAS record, but this record has to point to another AWS service and is not capable of ...
0 votes
0 answers
17 views

Configure Ingress controller on Native Kubernetes

I'm trying to implement the solution from this tutorial on Kubernetes v1.29.2: https://platform9.com/learn/v1.0/tutorials/nginix-controller-helm I run: root@node1:~# helm repo add nginx-stable https://...
4 votes
1 answer
5k views

Cannot access SMB share from Windows 10 with guest access via OpenVPN Connect

Windows 10 client, using file explorer, OpenVPN Connect client 3.3.4, cannot access an SMB share with guest access on the OpenVPN server (2.4.11 arm-openwrt-linux-gnu) is running. Works: Can connect ...
-2 votes
0 answers
46 views

open source product similar to Windows RDS [closed]

Have been trying on a ubuntu22.04 with xfce4 to publish a single app/RDP or VNC session a user on the server. So far no success, is apache guacamole able of doing a that? If anyone has any ideas, is ...
0 votes
1 answer
22 views

Apache config SetEnv variable only if not set

I have a fairly high traffic web server and would like to squeeze some micro optimization out of it. In Apache's config I have: SetEnvIfNoCase Request_URI "\.a?png$" dontlog SetEnvIfNoCase ...
-1 votes
1 answer
23 views

"Server spool directory location is invalid" when changing spooler directory to network drive

Tried changing the spool directory (printers & scanners->print server propertiers->advanced->spool folder) to a (existing) Share Point directory but getting message "Server spool ...
0 votes
1 answer
4k views

ERR Connection Refused over HTTPS IIS

I purchased a certificate so that I could have SSL on my home web server. I am using dynamic DNS and able to connect to the various websites I have configured over HTTP. I have the bindings set ...
2 votes
2 answers
383 views

Debian 12: can't get ClamAV to listen on TCP 3310

ClamAV seems to have a bug on Debian 12 (bookworm) making it difficult to get it listening on TCP 3310. I tried the two approaches described in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=...
0 votes
4 answers
6k views

squid blacklist solution

I've installed squid proxy server for a company and now they ask me to add blacklisting capabilities for squid. The most obvious thing that comes to mind is just to find a huge blacklist file on the ...
0 votes
0 answers
18 views

How can I limit resources for non root users using CGroups V2 on Ubuntu 22.04?

Currently, I'm limiting the CPU and Memory for different non-root users in my software via Cgroups v1 in Ubuntu 20.04. I want to upgrade my software to Ubuntu 22.04. How can I safely move to that with ...
0 votes
0 answers
15 views

Disabling OneDrive on Scheduled PowerShell Script

I need to disable OneDrive via a scheduled task in a PowerShell script. The command works when executed directly in PowerShell but not when executed via scheduling. The scheduling was done with the ...
0 votes
0 answers
70 views

Is it possible with CSF firewall, to forward IP traffic transparently?

In /etc/csf/csf.redirect 10.100.100.115|*|10.200.200.186|*|tcp 10.100.100.115|*|10.200.200.186|*|udp I have the following config, now when I connect to https://10.100.100.115/ (nginx+php) with script ...
1 vote
1 answer
6k views

mdadm : assemble raid5 created with missing disk

2 years ago i've created a raid5 array with 2 disks like this : mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 missing Now i've rebuilt my system with latest ubuntu server LTS,...
0 votes
1 answer
39 views

Azure WebFunction does not respect host.json file

I'm running a WebFunction of type ServiceBusTrigger. Depending on the case, I need to abandon the message and put it back in the queue. However, I can only run it again after 30 seconds. I have ...
0 votes
0 answers
19 views

How to use SMART via Zabbix?

I've been trying to use SMART tools for a time over zabbix, but I just cannot figure it out, why it's not working. Server: debian 10 4.19.0-17-amd64, zabbix: 6.0.0 Revision 5203d2ea7d Client: debian ...
0 votes
0 answers
10 views

Presenting a different view on WebDAV depending on user

How can I configure Apache to allow multiple users to connect to a WebDAV share using the same URL (https://server/webdav/), while ensuring that each user sees the directory as if they were the only ...
1 vote
2 answers
4k views

Installed gitlab-ci but only nginx welcome page shows

I installed gitlab-ci using this guide and everything has gone pretty well. I got to the end of the tutorial and when I go to the ip address of the server I only get a Welcome to nginx! screen. I'm ...
-1 votes
0 answers
31 views

How do I get myself out of docker hijacked network situation on my Debian VM?

I ran into a problem with wg-easy docker in trying to set up Wireguard using docker on my Debian VM so I changed network_mode to host as a last resort without learning about the consequences... The ...
0 votes
0 answers
15 views

What to check on what is blocking my open port on Debian?

I would have posted my attempts but I currently do not have access to this Debian VM... (see related question How do I get myself out of docker hijacked network situation on my Debian VM?) Anyway, the ...
0 votes
0 answers
6 views

pam_unix logs: xrdp-sesman:session session opened for user USERNAME(uid) by (uid=0)

recently I found a lot of these type of logs: pam_unix(xrdp-sesman:session): session opened for user username(uid=some_uid) by (uid=0) From what I read is xrdp-sesmam-session that is "opening&...
0 votes
0 answers
33 views

Creating a computer account in AD using PowerShell

I want to create a new computer object in an AD domain. Below is the script I am using. Can someone tell where should create credential object for SRV1? In domain controller or in computer? If ...
0 votes
1 answer
4k views

Windows Server 2019 Cannot Install .NET 3.5

crosspost Microsoft IT Pro Tech Community crosspost r/sysadmin Windows Server 2019 Cannot Install .NET 3.5 I am running Windows Server 2019 (Version 1809, Build 17763.4499) and I cannot install .NET ...
0 votes
1 answer
25 views

Accessing azure internal container app though P2S vpn connection

I'm a little new to azure networking so this might be obvious but I'm kind of stuck. I've created an azure VNET. Inside that I've setup a P2S gateway which seems to work fine. I can connect to it and ...
0 votes
1 answer
20 views

DNS Configuration for Azure Load Balancer with Public IP

I'm configuring a load balancer in Azure to distribute traffic to backend VMs for my web application (most likely just a singular VM actually). I'm a bit confused about the DNS setup. Here's what I ...
0 votes
1 answer
5k views

How to resolve Windows 10 corrupt user profiles and temporary profiles folders?

In my office i had have configured a windows 10 desktop machine ncomputing thin client remote desktop server in which there are 20 client machines. I applied group policy in it for locking control ...
0 votes
0 answers
12 views

Multibranch pipelines not working if it's created by job DSL

i have a job DSL job script that creates folders for each pipeline and inside each folder it creates the relative multibranch pipeline. after suffering a bit with syntax I managed to to create that ...
2 votes
1 answer
46 views

Why doesn't purging kerberos tickets work on a domain controller?

To get a computer to update its group memberships without rebooting the computer, you can purge kerberos tickets with the command klist -li 0x3e7 purge. A subsequent gpupdate or gpresult will reflect ...
22 votes
5 answers
31k views

Prevent port change on redirect in nginx

I currently have nginx setup to serve content through Varnish. Nginx listens on port 8000 and varnish connects users' requests from 80 to 8000. The problem is, on some occasions, particularly when ...
0 votes
0 answers
18 views

Docker Swarm DNS fails for service name, but service virtual IP address and task IPs are resolved correctly. How to debug this?

This question was flagged as not a good fit for StackOverflow as it is networking focused. Please let me know if there is a better place for it than here. TLDR; In summary, from within a service ...
0 votes
0 answers
3k views

Browser displays black "xxx took too long to respond" for 3 seconds then displays the expected page

There are two apps A and B. A is used to authenticate users and passes a token to B, B adds a cookie. Something strange happens whenever the cookie expires or after a long period of time or hard ...
2 votes
2 answers
4k views

SSL Certificate Not Getting Refreshed

I am trying to change the SSL Certificate for my website. I got the new certificate issued by Comodo and installed it on my web servers. My servers are running IIS7.0. I also binded the https ...
1 vote
1 answer
340 views

How to fix NetworkManager-dispatcher script permission denied error?

I've got a fully updated RockyLinux 9.2 server, where I have a couple of network services running via Systemd. Following the instructions such as from here and here, I created a shell script that's ...
0 votes
0 answers
17 views

SSH certificates: how to revoke a certificate serial number on the client side? [closed]

Found so many resources about KRLs on the server but not the client. Any help?
0 votes
0 answers
19 views

Connections blocked between 2 servers at the same ISP - my fault or hosting company's?

I have 2 dedicated servers at ionos.com, and old one I am trying to abandon and a new one I am trying to migrate to. In the process of migrating, I discovered that I am unable to connect between the ...
0 votes
2 answers
241 views

AWS Instance cannot connect after resizing volume and reboot

i am facing connectivity issues with my AWS EC2 instance after resizing its volume. Here's what I did: I had an EC2 instance running Ubuntu in a container with a full storage. I modified the volume to ...
2 votes
2 answers
5k views

Copy EFI partition and BCD store to a second drive

I'm attempting to set up dynamic boot partition mirroring on GUID partition table (GPT) disks as part of making a bootable mirror of a Windows system drive. I am following Microsoft's KB951985 but I ...
0 votes
0 answers
9 views

Can I change controlPlaneEndpoint after kubernetes initialization?

I'm new to kubernetes and this is my kubernetes version info kubeadm version: &version.Info{ Major:"1", Minor:"27", GitVersion:"v1.27.3", GitCommit:"...
0 votes
1 answer
23 views

Apache Kafka Single Node Docker- how to set listener to docker hostname

I am using the Apache Kafka 3.7.0 docker image as outlined here, with some minor tweaks: docker run --network=internal --name my-kafka apache/kafka:3.7.0 My intention is to only access this within the ...
1 vote
2 answers
2k views

Beginner What is asterisk stands for on local address

I am new to ubuntu server as well as server too. When I am checking the open port using command 'netstat' .On the column of local address, there is *.http and *:ssh what does * meaning of?
1 vote
0 answers
77 views

How can I make MIAB automatically copy all mail sent via SMTP into the sent folder of the sender's account?

I run Mail-In-A-Box on my mail server and one of my clients is using a specialized application to send messages via SMTP from their account on my server. When they used their own Gmail account to send ...
0 votes
0 answers
63 views

Google Cloud Kubernetes reservations

Recently our GKE environment was suspended. When the account was re-activated Kubernetes was not working because only 1 of 3 servers were available. Two zones reported ZONE_RESOURCE_POOL_EXHAUSTED for ...

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