Latest Server related questions

Score: 5
How to use targetcli to disable iSCSI write cache
cn flag

I have exported a single disk as an iSCSI target using targetcli on a Linux host. On a remote machine I have connected to the device, and placed a ZFS volume on it (as a replication target with zrepl).

However any time I reboot the iSCSI target machine, the initiator machine running ZFS fails with write errors. After doing some research, the type of failures it has only occur when ZFS sends a write ...

Score: 0
Praveen Sivakumar avatar
Domain sharing to another server
ly flag

We have domain that registered in a cloudflare by alb dns CNAME record and hosted in windows server as prod server.

on other hand we also had an ubuntu server infront of windows server.

My question is can we mask the production server ip or alb dns ip address on checking domain the nslookup domainname?

It is possible to show ubuntu server ip address when user check the domain on DNSChecker or nsl ...

Score: 1
DanRan avatar
MariaDB / MySql Warning after Netdata installation. "Access denied for user 'netdata'@'localhost' (using password: NO)" How to fix?
mx flag

I have configured Netdata on an Ubuntu 20.04 Server LEMP server, according to this Linuxbabe.com tutorial.

After installation, I run the following command

sudo systemctl status mariadb.service

which returns the following warning:

[Warning] Access denied for user 'netdata'@'localhost' (using password: NO)
  1. What does this mean in regards to Netdata functionality?
  2. Does this mean Netdata is misconfig ...
Score: 1
J'e avatar
Audit log emails not going to the correct address
eg flag
J'e

On Ubuntu 20, I'm trying to send audit logs to [email protected]. I do have a real domain and email server but I'm redacting them here. When I trigger an audit event, the email is instead sent to root on the local machine. So far I've tried the following:

  • Running echo "Subject: test" | sendmail -f root@my_machine.com [email protected] the test email is sent successfully.
  • /etc/audit/auditd. ...
Score: 0
Jaichand Patel avatar
Interpretation of output of nvidia-smi and lspci | grep -i nvidia
lb flag

I am very new to GPU servers. I submitted a slurm job and then checked "nvidia-smi". I got the following outputs.

This picture

Then, I ran "lspci | grep -i nvidia" where I got this output.

01:00.0 VGA compatible controller: NVIDIA Corporation GA102GL [RTX A5000] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GA102 High Definition Audio Controller (rev a1)
25:00.0 VGA compatible controller: NVIDIA C ...
Score: 1
jhavig avatar
Get all computers running specific Windows OS
ci flag

I'm currently in the process of upgrading all Windows 2012R2 and 2016 servers to 2019. I would like to run a Powershell cmdlet that will get all the computers on the domain that are powered on, and running these operating systems, as well as their hostnames and ip addresses. I have used Get-Computer in the past and got a long list of servers that had been turned off already, may have been using the wron ...

Score: 0
Special Monkey avatar
Nginx access_log format "timing"?
au flag

I'm using a config snippet to setup a reverse proxy with nginx version: nginx/1.14.1 - it has "timing" specified as access_log's format - that causes an error.

## Application specific logs
access_log /var/log/nginx/yourdomain.com-access.log timing;
error_log /var/log/nginx/yourdomain.com-error.log;

Here's what nginx -t says:

nginx: [emerg] unknown log format "timing" in /etc/nginx/conf.d/virtual ...
Score: 0
imclerran avatar
After setting manual ip address with network manager cli, ssh connection closed and no longer accessible
bq flag

Context

I have been trying to set my docker containers to each use a separate ip address, rather than opening multiple ports on the same ip. My system (Debian Bullseye) uses Network Manager to manage network interfaces, so I ran nmcli to configure additional ipv4 addresses on eth0. The system is statically assigned 192.168.4.238 by my router.

Steps which caused the issue

  • I ran set ipv4.addresses 192. ...
Score: 0
David Newcomb avatar
How does Php-fpm access filesystem, or does it?
cn flag

Background: My server has become too old to upgrade. Some software will only work on PHP 5.6 and is incompatible with newer versions of PHP. New server hosting packages do not support PHP 5.6 as it was deprecated a while ago.

I am moving the application to a new server that supports docker and I intent to wrap up PHP 5.6 and all its deps into a docker image. I will then reconfigure Apache 2.4 to  ...

Score: 2
How is Hardware RAID for NVME drives configured on SuperMicro?
in flag

I've purchased as x13sae motherboard from supermicro which is advertised as

M.2 Interface: 3 PCIe 4.0 x4 (RAID 0, 1, 5) M.2 Form Factor: 2280 M.2 Key: M-Key

I have two NVME dries in my m.2 ports. I want to put them RAID 1 so I can weather a drive failure. I don't see the option in the BIOS. Where do you configure this? I am using Linux. Is there a utility to configure hardware RAID?

Score: 0
e-Mail greylisting; Why including IP address?
ae flag

In all the information on the internet I could find about greylisting I find the information that the following tripplet is used to uniquely distinguish an incoming e-mail:

  1. Source IP
  2. Source e-mail address
  3. Destination e-mail address

Now the source IP can make problems because large mail services use multiple IP addresses (possibly from complete different IP ranges) to re-send blocked e-mails.

Question

Score: 0
How can I dump an AWS Route53 zone in a BIND-compatible format?
iq flag

I have a zone in Route53 that I need in a BIND-compatible format.

How can I convert it?

Score: 0
Abdulah Abutouq avatar
Can't install php7.4-dev on Ubuntu 18.04
ba flag

Trying to install php7.4-dev extension, but I'm getting

E: Unable to locate package php7.4-dev
E: Couldn't find any package by glob 'php7.4-dev'
E: Couldn't find any package by regex 'php7.4-dev'

When I run apt show php it displays the following:

Package: php
Version: 1:7.2+60ubuntu1
Priority: optional
Section: php
Source: php-defaults (60ubuntu1)
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubun ...
Score: 0
Alex Ilyin avatar
DataProtector backup session stucks in "Inactive/Waiting" status
al flag

DataProtector v. 11.01

Backup session stucks in "Inactive/Waiting" status. There are no requests detected on DB-server. On the other hand, other sessions (for another DB`s on the same DB-server) goes fine.

Tried to create back-up specification - no use. Tried to reboot CM-server - no use. Launch CM-server in debug-mode - I get lots of log-files, but nothing useful inside. No warnings, fail-messages  ...

Score: 0
Arraf Khan avatar
Rsync Webmin from master VPS1 to child VPS2
vi flag

I am attempting to replicate(rsync) the etc/webmin directory from the Master VPS (VPS-1) to the Child VPS (VPS-2). However, after performing the copy, the server summary on the Child VPS still displays the IP address of the Master VPS. My goal is to retain the IP address and networking configuration of the Child VPS while only copying the Webmin configuration. I'm using Ubuntu and below is the sc ...

Score: 0
Opa114 avatar
wget/curl from internal network (web server) to external ip address (web server) connection failed
mw flag

for some monitoring purposes on my own software i want to call wget with the "external" UR of the webserver, so my call will look like wget https://www.mydomain.de/path

But this call fails with the error message: Connection failed.

When i make the call from another server / device outside the network from above the call runs without any problems. So my Firewall rules in general are correct i think.

Score: 0
Daemon Jester avatar
Unable to join nodes to kubernetes cluster; kubelet error preventing kubeadm join suspicion
gi flag

I've created a new cluster on 10.0.0.100 and after a few tweaks managed to get all pods up and running:

NAME                                    READY   STATUS    RESTARTS       AGE   IP           NODE            NOMINATED NODE   READINESS GATES
coredns-6d4b75cb6d-fwjnr                1/1     Running   0              47s   10.244.0.4   ts-k8s-master   <none>           <none>
coredns-6d4b ...
Score: 0
Marvin Fratzke avatar
Trigger a Ansible-Playbook when i create a VM in Netbox
ai flag

Is it possible when i create a Virtual Machine in Netbox that can trigger an Ansible-Playbok what add stuff? for example Create the VM in CheckMK with the details whats written in Netbox.

Thanks everybody for Answering.

Score: 0
Gorgo avatar
Reducing NTP offset with local server and Windows 10
cn flag

I'm trying to synchronize my Windows 10 (22H2) workstation with our local NTP server. I already synced another Linux device and I got <1ms offset:

nvidia@nvidia-orin-rt:~$ ntpdate -q 10.1.2.3 server 10.1.2.3,
stratum 3, offset -0.000023, delay 0.02728 27 Jul 07:54:47
ntpdate[3894]: adjust time server 10.1.2.3 offset -0.000023 sec

on Windows side I set the NTP IP into the 'Internet NTP url' (before  ...

Score: 0
jps10 avatar
Route 53 Routes configuration
ro flag

Can anyone help me about how I configure my route 53 DNS to do this:

https://shortenit.me/ (frontend) https://shortenit.me/:url (backend with any route before /) https://api.shortenit.me/ (backend)

The domain was purchased on namecheap and configured to work with aws DNS

Score: 0
Irbis avatar
Docker - linux container run on Windows has different time
af flag

I work on Windows 10. I use a docker image based on Ubuntu 18.04 (FROM ubuntu:18.04). When I run a Linux container using Docker the time returned by "date" command differs from the time on the Windows host machine. The time in the Linux container is two hours earlier than in the Windows host machine. Based on the research I have tried -v option with docker run command but it doesn't work (I run Docker ...

Score: 0
xm22 avatar
Why are changes not synced to replica instances on Kubegres Cluster?
bo flag

I have set up a Postgres on Kubernetes cluster with Kubegres with 3 instances - 1 master and 2 replicas. Now, I am facing the problem that the replication doesn't really work. What is synced, is when databased are newly created. What is not synced:

  • creating tables
  • Inserting/modifying data

I went through those steps: https://www.kubegres.io/doc/getting-started.html Did I miss sth.? I am also not sure if ...

Score: 0
David Hirst avatar
AKS Kubectl command doesn't return completed pods
in flag

I am using AKS with Kubernetes v1.25.6 and I have started to see a number of pods with a Completed status. From what I understand these are generated when an exit 0 code is returned on the process the pod is running, which for the pods in question makes no sense. I was also given the impression that the completed state would allow me to use a command such as kubectl logs podname to review why the ...

Score: 0
xm22 avatar
High CPU usage of kube-controller and kube-apiserver when increasing nodes of ECK node sets
bo flag

I am trying to run an Elastic Cluster on Kubernetes (Minikube). It basically works, but only with one server per node. As soon as I try to set up > 1 node per node set, the cpu usage of

kube-apiserver kube-controller kube-scheduler kubelet cri-dockerd etcd increases and the cluster is not reachable via kubectl anymore.

This is my ECK-configuration:

apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Ela ...
Score: 0
The KNVB avatar
About the quick assist in AD domain environment
zw flag

My company network is MS AD domain environment.

All my client's PC are joined the AD domain.

Therefore, I must connect the client's PC when my user needs the admin. right.

I can connect to my client's PC using the Windows 10 feature "quick assist".

Unfortunately, when the client's PC prompt the admin. user name and password, I got a black screen on my PC. Is it normal? How can I fix the problem?

 ...
Score: 0
Maciek Semik avatar
Apache AliasMatch with Wildcard Not Working As Intended
vn flag

I am trying map all wildcards for a directory /a/* onto on file article.php using AliasMatch ^/a/(.*) /article.php but without redirecting (I want to keep the url looking the same). But I am getting a The requested URL was not found on this server. error.

Is AliasMatch even the right way to do this? Or is there a better way.

I am trying to achieve something like:

example.com/a/hello
example.com/a/this-is- ...
Score: 0
John Oxley avatar
SSHD: Dynamic deny port forwarding
sr flag

From the current ssh session on a server, what -L params did the client specify?

I am trying to build a jumphost using sshd that can be used for port forwarding. The goal is to be able to get into a secure zone and forward the RDP port out so remote desktop can be used.

On my workstation I want to run

ssh -NL 1234:my-server:3389 the-jumphost

then connect my RDP client to localhost:1234 (or VNC or $wh ...

Score: 0
hudac avatar
Route an incoming ICMP packet to a different interface/process
fr flag

I have an interface enp4s0 with several IPs.
I get ICMP packets (type 8, echo request) from external device to my device on enp4s0.
I'm trying to route only packets sent to 192.168.1.90 into another interface on the same device. On that interface there's a process which should handle these packets.

7: enp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1 ...
Score: -1
Luigi avatar
Error install exchange 2016 coexistence with exchange 2010
cn flag

When installing exchange 2016.

Error: step 7 of 14 mailbox role: Transport service

The following error was generated when "$error.Clear(); 

          if ( ($server -eq $null) -and ($RoleIsDatacenter -ne $true) )
          {
            Update-RmsSharedIdentity -ServerName $RoleNetBIOSName
          }
        ": "Microsoft.Exchange.Data.DataValidationException: Database is mandatory in UserMailbox.
   in ...
Score: 1
Trying to clone old linux machines using to img methods
in flag

I found this handy website to show how to clone drives to a img file:

https://www.maketecheasier.com/clone-entire-hard-drive-linux/

What neatish looking option was partimage, so I wanted to get that rolling on our very old, very not updated systems (updating would break the very old scientific hardware they have on them).

sudo yum install partimage
Loaded plugins: kernel-module
http://ftp.scienti ...

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