Latest Server related questions

Score: 0
Simon Lenz avatar
Resolving CNAME to local IP fails inside Docker container
il flag

So I've set up a local server in my LAN. Connections from outside my network are not allowed. Still, the server should be reachable under my public domain (example.org).

So I've set a CNAME record pointing to a name only reachable in my local network (myserver.fritz.box).

That way, devices in my local network can reach the server under the public name. Devices outside my network can't.

On my host ...

Score: -1
Wat Then avatar
How can i certify cabling with a cat5 certifyer if the cabling is mixed cat5 and cat6 thanks
va flag

Hello I'm getting ready to certify some cabling and realized it is mix matched cat5 and 6 but my certifier is only for cat5. So I wonder if I needed a speacial certifier to do that thanks.

Score: 0
Intelligent Softs avatar
Port forwarding multipass instance on windows 10 (hyper-v manager)
pk flag

I'm currently using Multipass on my Windows 10 machine and I'm having trouble setting up virtual switch for my Multipass instance. I want to create a mail server and send mails over the internet. Can someone guide me on how to properly configure port forwarding for Multipass on Windows 10?

I created a multipass instance multipass launch lts --name server-web --cpus 1 --memory 1GB --disk 10GB

I cr ...

Score: 0
Kinshuk Lahiri avatar
Can't connect to EC2 SSH via Private IP
us flag

I was earlier able to SSH to the EC2 instance via the Private IP address of the instance using OpenVPN.

But, recently I changed my internet provider and after that, I cannot connect to particular EC2 instances whose instances are in the range of local IPv4. For example:

  1. Can't connect to 192.168.1.x (ec2 private IP) and local ipv4 is 192.168.1.8
  2. Can connect to 192.168.5.x (ec2 private IP) and local ipv4 i ...
Score: 0
Lovish Puri avatar
Listening on all interfaces, multiple servers
nc flag

I have a server listening on all interfaces for a port (using go net.Listen("tcp", ":{port}")). I also have backup server with the same code, to start if first server fails. Both machines using the same router which has an external IP address. Router assigns a private IP address to each connected device. A client dials the server using the external IP of the router (and given port).

While switchi ...

Score: 0
Hai Pham avatar
Traffic shaping for multipath routing in OVS
sd flag

I'm working with OVS and tried multipath routing using group tables like in this link: https://github.com/PSIB0T/Multipath-Routing. It splits traffic to buckets with output is different ports.

At first, I thought the traffic would be split into buckets proportional to the weights, then I realized that the traffic mostly goes through the path with the highest weight, other paths don't have any tra ...

Score: 0
Norman avatar
What is this message and how do I stop it from appearing?
cn flag

I'm running Ubuntu Server 22.04.2 on Oracle Virtual Box 7.0.8 r156879 that's on a Windows 10 Machine. Every time I start the VM I get this message that's in the image. How do I stop this from appearing? I doesn't appear with servers that I connect to on AWS or Oracle. Needless to say, it messes with the login.

enter image description here

Score: 0
Arthur Mitchell avatar
WebDAV server that respects user accounts
tc flag

I’m investigating implementing a WebDAV server and all the public advice points to Apache2.

There are 2 issues with this, first it uses it’s own password file rather than the users system password and second file accesses and writes seem to be limited to the www-data user.

Is there a better way to implement this please such that the authenticated system user is used when write files? I notice th ...

Score: 0
535 5.7.8 Error: authentication failed: UGFzc3dvcmQ6
iq flag

I have Postfix installed on a Fedora 38 box with the following:

$ grep smtp_ main.cf
smtp_sasl_auth_enable = yes
smtp_sasl_type = cyrus
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_security_options = noanonymous
smtp_always_send_ehlo = yes
smtp_use_tls = yes
smtp_sasl_tls_security_options = noanonymous
smtp_tls_wrappermode = yes
smtp_tls_security_level = encrypt

$ grep smtpd_  ...
Score: 2
MeSo2 avatar
Ways to make deployment ready pre-compressed brotli files on windows server
in flag

I am dynamically generating HTML files, which I use for deployment.

This is what I use to make these HTML file:

function writeFile()
    Dim objStream
    Set objStream = CreateObject("ADODB.Stream")
    objStream.CharSet = "utf-8"
    objStream.Open
    objStream.WriteText content
    objStream.SaveToFile absoluteFileLocationAndName, 2
    Set objStream = Nothing
end function

What are my options  ...

Score: 0
Ryan Friedman avatar
Forward local http port to external device using firewalld on Ubuntu 23.04
jp flag

I have an external device A that advertises a HTTP server at port 80. It is fixed at address 192.168.1.107. I can view the HTTP server at http://192.168.1.107:80 on my local network from any other device.

My Linux computer (Ubuntu 23.04), device B,at 192.168.1.105, has some remote access capabilities through remote.it. I'd like to expose A's server to remote.it on port 8080 by fowarding the port.  ...

Score: 0
e-info128 avatar
How to use specific host ip address on kvm?
br flag

Have a dedicated Ubuntu Server host with a single network interface but with two ip address:

root@server:~# cat /etc/netplan/50-cloud-init.yaml 
network:
    version: 2
    ethernets:
        eno3:
            dhcp4: true
            match:
                macaddress: 00:00:00:00:00:00
            set-name: eno3
            addresses: [IP-A/24, IP-B/32]

When IP-A is the native ip address assigned to ...

Score: 0
Danger Lake avatar
DKIM Postfix message not signed for outgoing mail
ca flag

I've been working on setting up SPF, DKIM, and DMARC for the past couple weeks. All is now successfully working, except that I cannot get my outgoing mail to be DKIM signed.

Debian 11 is the OS, OpenDkim with Postfix as my MTA.

Comparing with guides and other tutorials all seems to be well, but clearly I'm missing something.

Contents of Config files, though I've renamed the domain to Example.com.

Score: 1
stevland avatar
Domain names not resolving on CentOS webserver
cn flag

I have a small webhosting VPS running CentOS Linux 7.9.2009 (Core).

I'm also running Plesk Obsidian Version 18.0.52

Here is my /etc/resolv.conf file:

nameserver 1.1.1.1
nameserver 8.8.4.4
nameserver 71.19.155.120
nameserver 71.19.155.215

(The last 2 nameservers are provided by my VPS host)

From the CLI I cannot dig, ping, traceroute, etc... even my own hostname.

I noticed this yesterday and now my clien ...

Score: 0
pt-kill match against query ID/digest?
pl flag

There's a specific large query that gets run and I'd like pt-kill to match based on the query ID/digest ideally.

I don't see a way to do that though in the docs. I also tried to match by the query fingerprint but that wasn't working either.

Can either be matched with pt-kill?

Score: 0
Jealous_Donut_7128 avatar
ZFS I/O Error, Kernel Panic during import
kw flag

I'm running a raidz1-0 (RAID5) setup with 4 data 2TB SSDs.

During midnight, somehow 2 of my data disks experience some I/O error (from /var/log/messages).

When I investigated in the morning, the zpool status shows the following :

 state: SUSPENDED
status: One or more devices are faulted in response to IO failures.
action: Make sure the affected devices are connected, then run 'zpool clear'.
   see: http: ...
Score: 1
Pure FTP Server let's me download files from "Bind Mounted HTML" folder but will thrown 533 Error to STOR command when uploading Index.html
ru flag

Yesterday I finished configuring a FTP Server using Pure-FTPd. The method I am using is the "Virtual Users" method.

The commands below are basically what I executed it in order to make it work:

PureFTPd (Debian 10)

Instalar FTP usando o Pure-FTPd no Debian 10:

sudo apt install -y pure-ftpd-common pure-ftpd # Install Pure-FTPd
sudo ss -lnpt | grep pure-ftpd # Check what port is Pure-FTPd is running

 ...
Score: 1
zakadmin avatar
How should databases be configured for different environments to not lose data
cm flag

How to configure databases for development, staging and production environments so that there will be no any data loss. Many Applications such as Wordpress, Django, etc... use some database to store data. Now, if I am about to implement such a setup. The complicated thing would be the database. Because there will be difference in the data in staging environment and production environment. So when I try  ...

Score: 0
CristianDAG avatar
Centos show me "Cannot find a valid baseurl for repo: base/7/x86_64"
lr flag

Hi, i have a issue, when i type in Centos 7 "yum update" show me next error

Loading mirror speeds from cached hostfile

One of the configured repositories failed (Unknown), and yum doesn't have enough cached data to continue. At this point the only safe thing yum can do is fail. There are a few ways to work "fix" this:

 1. Contact the upstream for the repository and get them to fix the problem.

 2 ...
Score: 1
Jeremy McDaniel avatar
Why does Spring-boot no longer load PKCS11-NSS certificates after update to 3.1.0?
bi flag

After updating from spring-boot version 3.0.8 to 3.1.0 or 3.1.1 the application no longer loads the SSL certificates from the store.

Configuration: FIPS compliant config as described in: https://access.redhat.com/documentation/en-us/openjdk/17/html/configuring_openjdk_17_on_rhel_with_fips/openjdk-default-fips-configuration#key_store

Application is standalone tomcat embedded service.

Configuration f ...

Score: 1
Meaning of allowed_requests keys for SSH config
dk flag
Sig

I need to set the allowed_requests (-p) option for the ForceCommand keyword on ssh config file. /usr/lib/openssh/sftp-server -Q requests returns the list of available values.

open
close
read
write
lstat
fstat
setstat
fsetstat
opendir
readdir
remove
mkdir
rmdir
realpath
stat
rename
readlink
symlink
posix-rename
statvfs
fstatvfs
hardlink
fsync
lsetstat
limits
expand-path

Where can I find the meaning o ...

Score: 0
Mo Ali avatar
How to configure Keepalived to act as L4 load balancer via direct routing method
rw flag

Trying to achieve L4 load balancing via Keepalived in front of HAProxy that will act as L7 load balancer. Both Keepalived and HAProxy are on separate machines. I managed to get everything in the below image working but when I try to send a request to the public virtual IP (i.e. 115.101.1.17), the connection always times out.

As per my understanding from the documentation that states:

In order for th ...

Score: 0
Geosh Ua avatar
Wordpress Bitnami on GCP - database error ip change
tg flag

Please help me out.

I installed WordPress Multi-Tier Certified by Bitnami and Automattic on google cloud platform to develop a website and when it's almost finished my vm instance restarted or something and it changed IP....

Now I cannot access it. It says: Error establishing a database connection. I tried to restart the servers for mysql and stuff but when I use these commands down below it says co ...

Score: 0
Johnczek avatar
Access docker compose containers from host NGINX via reverse proxy
ng flag

I am facing this issues I am not able to solve by anything I´ve found on this site or anywhere else.

Lets assume I have a domain and Debian server with NGINX installed on it as main gateway for web server. On this domain (on root level) I have a traditional handling (like strippping www, redirecting everytime to https etc - basic stuff).

But now I´d like to have a set of services managed in doc ...

Score: 0
Cediwelli avatar
OwnCloud Domain showing as localhost
bl flag

I have OwnCloud running behind an nginx reverse proxy on my server. I installed it via the docker-compose.yml, following these instructions: https://doc.owncloud.com/server/next/admin_manual/installation/docker/

Everything works as I expected it besides one thing. The WebDav Link in the lower left corner shows as http://localhost:9001/... and not the acutal domain. Also, the Logout Button redirects  ...

Score: 0
zakadmin avatar
Storing Hashed Passwords for Docker and Docker Compose
cm flag

What is the best way to store passwords and use them in Dockerfile and docker-compose.yaml. Can I store the secrets in a hashed format and make use of it, So that no one can read my real passwords even if they have physical access. Or else, is there any alternative way to achieve something similar...

Score: 0
Simon avatar
Keycloak Docker fails to start due to "Negative Delay." Error
br flag

Running a keycloak container (21.0 - 21.1.1) on a Debian 11 Bullseye recently stopped working after host restart (MariaDB didn't start up, leading to keycloak also exiting. When the issue was noticed we started mariadb with --restart=always):

Most relevant seems to be this except from the Stacktrace:

2023-06-30 11:51:12,749 ERROR [org.keycloak.quarkus.runtime.cli.ExecutionExceptionHandler] (main) E ...
Score: 0
Nick avatar
DIsk Performance Counters not available remotely
in flag

The Physical Disk performance counters of a Windows Server 2016 are present and available locally, but not remotely. I've tried many suggestions out there such as checking registry, lodctr /r and restart relevant services but nothing helps. What could be the cause?

On the client machine in Performance Monitor, the section for Physical Disk does not show for the remote machine, while they do so locally  ...

Score: 0
Miguel Harmant avatar
Creating a GKE node pool results in Error 429: Too many operations: cluster "testcluster" hits the concurrent operations quota 1
um flag

While creating a nodepool with terraform, we are seeing the following error

2023-06-29 15:49:25,017 - Error: error creating NodePool: googleapi: Error 429: Too many operations: cluster "testcluster" hits the concurrent operations quota 1, please try again later.

2023-06-29 15:49:25,018 - Details: 2023-06-29 15:49:25,018 - [ 2023-06-29 15:49:25,018 - { 2023-06-29 15:49:25,018 - "@type": "type.goo ...

Score: 0
Odys avatar
Allow broadcast traffic between VLANs in TPLink Omada SDN
iq flag

I am managing a network with a few VLans, mostly ethernet connected. Everything is controller through TpLink Omada SDN.

It seems that there is no way to pass broadcast packets between VLANs in Omada SDN.

The scenario is to send a magic package from VLan A to VLan B.

The only way to make it work is set the network switch port of VLan B to be tagged for VLan B and untagged for VLan A, which is not de ...

The Stunning Power of Questions

Much of an executive’s workday is spent asking others for information—requesting status updates from a team leader, for example, or questioning a counterpart in a tense negotiation. Yet unlike professionals such as litigators, journalists, and doctors, who are taught how to ask questions as an essential part of their training, few executives think of questioning as a skill that can be honed—or consider how their own answers to questions could make conversations more productive.

That’s a missed opportunity. Questioning is a uniquely powerful tool for unlocking value in organizations: It spurs learning and the exchange of ideas, it fuels innovation and performance improvement, it builds rapport and trust among team members. And it can mitigate business risk by uncovering unforeseen pitfalls and hazards.

For some people, questioning comes easily. Their natural inquisitiveness, emotional intelligence, and ability to read people put the ideal question on the tip of their tongue. But most of us don’t ask enough questions, nor do we pose our inquiries in an optimal way.

The good news is that by asking questions, we naturally improve our emotional intelligence, which in turn makes us better questioners—a virtuous cycle. In this article, we draw on insights from behavioral science research to explore how the way we frame questions and choose to answer our counterparts can influence the outcome of conversations. We offer guidance for choosing the best type, tone, sequence, and framing of questions and for deciding what and how much information to share to reap the most benefit from our interactions, not just for ourselves but for our organizations.