Latest Server related questions

Score: 0
surfrock66 avatar
SNI and TLS errors on apache reverse proxy host when proxying multiple sites from different servers?
cn flag

I have an apache2 reverse proxy which is proxying many services including zabbix and nextcloud, and applying a wildcard SSL certificate to said services. These are individual virtual hosts, though they all use the same CA-verified wildcard SSL cert. This is, in principle, working perfectly. The zabbix server and nextcloud servers are their own VM's, and if I load up "https://zabbix.domain.tld" OR "ht ...

Score: 2
vishnu avatar
How to get the data usage of a specific AWS service
in flag

I was trying to find how to check monthly data usage of a specific AWS service (eg. EC2) but I don't seem to get my head around it:

I tried this dashboard:

So for example, I was looking at the data usage from year 2019 to 2013 on a per month basis.

I tried to do 2019 first.

I press the Download button and selected the CSV report format.

enter image description here

I then open the downloaded CSV report via Microsoft Excel

enter image description here

If I f ...

Score: -2
williamohara avatar
AWS region data
co flag

Is there any data out there or is there someone willing to share something that they may have compiled, AWS regions (all, worldwide) to country mapping based upon performance. Combined with data related to service update cadence (or which comes first) and pricing?

I looking for something like a table I have searched high and low for something that can give me the following or at least give me som ...

Score: 0
Tom avatar
Customize server name for error pages in NGINX
bf flag
Tom

Is it possible to customize NGINX so when displaying a 500 error page it displays a custom name instead of NGINX?

Similar to what Cloudflare does in some cases by displaying:

500 Internal Server Error
------------------------
    cloudflare-nginx

My question may seem a bit silly, but if a user of mine indicates it is my server, it presented an error, I can identify whether this actually occurred on our s ...

Score: 0
somenxavier avatar
Using if with ssl_certificate in nginx for loading SSL certificates
jp flag

I have two domains: foo.com and bar.com which are served by nginx. To avoid duplicating code, I want to put this

   [some code]

        if ($host = "foo.com") {
           ssl_certificate /etc/letsencrypt/live/foo.com/fullchain.pem;
           ssl_certificate_key /etc/letsencrypt/live/foo.com/privkey.pem;
        }

        if ($host = "bar.com") {
          ssl_certificate /etc/letsencrypt/live/bar.c ...
Score: 3
lobis avatar
AWS NAT Instance Setup
zm flag

This question was originally posted to stack overflow, they suggested I repost it here (https://stackoverflow.com/questions/76715004/aws-nat-instance-setup).

I am currently learning the AWS cloud and decided to build the following architecture as a challenge:

  • A VPC with a public and private subnet. The public subnet has access to the internet via an internet gateway.
  • A NAT EC2 instance in the pub ...
Score: -3
Davids Learnin avatar
Windows Server 2019 DHCP Option 33
cc flag

Noticed there is an option in DHCP for static routes, looks like it is using a server name and an IP that you assign, is this the same thing as adding an entry into the host record like we used to do back in the day if we wanted windows to use a certain resource?

Score: 0
Christopher Bailey avatar
Load test (single client vs thousands of clients)
dj flag

Hello Serverfault community,

I am currently working on a .NET Web API that utilizes MS SQL as its backend to process data and return straightforward results. To ensure the API's performance and reliability, I've been conducting load tests using Sendgrid Loader.io.

During these load tests, I aim to handle around 3500 requests in parallel, and according to Loader.io, this seems achievable. The load te ...

Score: 0
Run avatar
Postfix on IPV6: no MX host for yahoo.co.uk has a valid address record
fo flag
Run

I have my new cloud server running on ipv6 only. I have set the AAAA mx record. Postfix installed with the following config:

$ sudo nano /etc/postfix/main.cf

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

readme_directory = no

# S ...
Score: 0
ilchannel avatar
Access to SMB folder from LocalService account
mf flag

this is the situation: I have a Synology server with file folder normally accessible from the windows domain computers; I also have onto the primary domain server an application built onto Apache Tomcat 8.5 which runs with "local service" account. Inside this app, I cannot access path that points to the synology folder, although I have setted "Everyone R/W" on the security tab of the data folder. I gues ...

Score: 0
mm1234 avatar
How to use variables in Exim filter file?
nz flag

I'm using Exim with Cpanel.

I created a filter file:

touch /usr/local/cpanel/etc/exim/sysfilter/options/forward_filter

with the following content:

# Exim filter
if ("$sender_address" does not contain "@example.com") then
headers remove From
headers remove Sender
headers remove Return-Path
headers remove Return-path
headers remove Envelope-From
headers remove X-Authenticated-Sender
headers remove Rec ...
Score: 0
Renaming Windows Domain Controller. Is it easier to demote, rename, and promote?
in flag

We have several Windows domain controllers at our location, but the naming conventions are not consistent. Each time a new site was added, the administrator in charge of that site made a new DC and gave it whatever name he or she pleased.

We now have a company-wide naming standard and want to rename our DCs. We could follow the Microsoft instructions, but wouldn't it be simpler to just demote the DC, re ...

Score: 0
Jay Duff avatar
Using Google Authentication on iPhones on Aruba wireless
ye flag

We have set up Google Authentication for our Aruba WiFi network. We are using Central (v 8 and 10 - both have the issue) and AP-515s and AP-535s. The solution works as expected on every platform except iPhones. We use it on Windows (10 and 11), MacOS (10.12.6 - 13.4.1(c)), iPads (14-16.5.1(c)), Android phones (version unknown - not mine), and even Chromebooks (98-114), with no issues.

However, wh ...

Score: 0
konrados avatar
No read/write access to files owned by root, when using sshfs as root
ax flag

I am using sshfs. I log in as root: sshfs [email protected]:/ /mnt/remotes/domain.pl-root (using keys). The login process is successful. When I create any file anywhere in /mnt/remotes/domain-root/, its owner and group are root. So it seems that I am currently root there, right?

So why can't I read files owned by root that have read and write permissions for the owner (root)? For example, a file like th ...

Score: 0
kneidels avatar
Occasional 403 error on IIS
wf flag

Using IIS 10 on Windows Server 2019. I am not a server admin, I am a developer who manages sites on the rented server.

I have a report that runs through names, and via a client side scripts, access an ajax file to check if the person's status is valid. So, when the page loads, ~100 ajax calls could be run. On some servers, this report seems to complete perfectly (with 100 names checked), but on t ...

Score: 0
Ram Krishna avatar
DNS config for roaming DC client laptop
to flag

We have a small office with one primary DC(192.168.1.6), one secondary DC(192.168.1.7) and 5 desktops connects thru LAN and two laptops thru Wifi. Both the DC's are local and can't be reached from the internet.

The internet router TP-Link(192.168.1.1) acts as the DHCP. A Netgear router configured as AP(192.168.1.2).

The clients get the ip address from the router.

DNS entries on all the clients point to ...

Score: 0
Rinto George avatar
How to install varnish cache in Amazon Linux 2023?
ae flag

I want to install varnish cache 6 in Amazon Linux 2023.

Sudo dnf install varnish

Above command returns no packages found message.

Tried with direct rpm package installation but it failed to resolve so many dependencies.

Even tried with packagecloud repo, but all methods failed to install as some dependencies always missing.

Please advise if anybody knows the correct way to install varnish cache i ...

Score: 0
Arcturus avatar
AWS and Route53 : Certificate not validating
vg flag

I've a domain registered with route53 and I'm trying to validate certificate. I did press on "request" on the AWS Certificate Manager (ACM), then I clicked on "Created records in Route 53" and when I go into the Hosted Zone of this domain, the cname record is present. But more than a day later, the certificate is not validated.

enter image description here

enter image description here

And I've been able to obtaint a AWS certificate for another domain outside  ...

Score: 1
user2629636 avatar
Scheduled task to upload a file to S3 with PowerShell ignores user profile settings
us flag

I am using Windows task scheduler with a user that has an AWS profile configuration under C:\Users<username>.aws\configuration (content below)

[default]
s3 =
    max_concurrent_requests = 300
    max_bandwidth = 5000MB/s


[profile BackupProfile]
s3 =
    max_concurrent_requests = 300
    max_bandwidth = 5000MB/s

The redacted script looks like this:

Set-AWSCredential -ProfileName BackupProf ...
Score: 1
Roger M avatar
Logon box not appearing after pressing a key or Ctrl-Alt-Del to log in
in flag

This is a double post that's originally posted on SuperUser. I hope that's allowed and that the question is welcomed here as well, as it's likely domain related.

"This is not a "bluescreen" (BSOD), it's a "blue screen"."

I (which also means people at the company) have a problem that seems to have persisted through the years of Windows 10 Pro x64, but now has annoyed enough people that I've been task ...

Score: 0
RandomUser8888 avatar
Why MACsec can not reach more than 2Gbits/s?
as flag

i am configuring macsec and i have discovered that, when using this protocol to send/received data, the bitrate is so low.

I am using it over a 10Gb network adaptor, using iperf3 it almost reach that value but when using MACsec over that interface, the highest value it has reach is 1,78Gbits/s.

I use "top" to check if there is something that is causing the cpu to spend time in other process, and i h ...

Score: 0
Justin Cervero avatar
adamsync moving objects to LostAndFound on user object delete on Server 2022 replica in mixed OS environment
cn flag

We are in the process of migrating our ADLDS instance from Server 2012 to Server 2022. We have brought up the two new replicas and they are replicating and functioning as expected. We run a daily health check and replication report. Everything looks good.

Our ADLDS is an authentication proxy for our main AD Domain. We run adamsync every four hours to pull in changes. The adamsync job alternates b ...

Score: 0
codego123 avatar
Is /proc/mounts file depracated?
ye flag

I have been reading at several places that we should no longer refer to /proc/mounts and instead it is better to rely on /proc/self/mountinfo file. For example, see this question:

/proc/self/mountinfo per-mount-options vs per-super-options

However, I can't find any official documentation stating the same.

Score: 1
user3500773 avatar
wmware p2v convertor failed with "Network is unreachable Network error"
kh flag

I want to convert Ubuntu physical to Esxi vm
ssh connection to physical OS is OK on my network.
vmware convertor stops converting at 3% with

"Network is unreachable Network error. Host x.x.x.x key can't be retrieved. (return code 2)"

I suspected there is an issue between ESXI server and Ubuntu so I enabled ssh on ESXI.I logged in ESXI
I can Ping ubuntu , but I can not connect ssh to ubuntu on ESXI(tim ...

Score: 0
Khaled Hussein avatar
Top IPs used output traffic for last month - Debian
jp flag

I have server running Debian 11 and it is a webserver, I need to know in a specific period what is the IP that utlize more traffic out from the server, I find some tools like iftop and vnstat, but I cannot find what I need, I need a tool to keep data for network traffic for specific time and I can find which IP is consume high traffic from my server

Thanks

Score: 2
TaylanKammer avatar
Apache creates ~3x as many threads as MaxRequestWorkers
es flag

I'm hosting a non-profit community wiki for the upcoming video game Baldur's Gate 3. Since it looks like the game is likely to have millions of players, we started worrying about server capacity.

I'm on Apache 2.4.57 (latest stable), using the following mpm_event.conf right now, subject to further change:

ServerLimit             8
StartServers            2

ThreadLimit             32
ThreadsPerChi ...
Score: 0
Michał Ryba avatar
Connecting 2 Virtualbox VMs to Open vSwitch running on another Virtualbox VM
lt flag

I have 3 Ubuntu 22.04 VMs created using Virtualbox. My host machine is Windows 10. One of them is running 5G core emulator, and the other one is running UEransim. I was able to connect UE to 5G network, but I need to have an additional VM in-between with the Open vSwitch and an SDN controller running on it to capture traffic and analyze it. If OVS was running on the hypervisor machine I could just sim ...

Score: 0
user2464424 avatar
In NGINX, is there a directive to limit the time it takes to establish new client connections?
au flag

In Nginx there's the client_header_timeout directive that sets a timeout for receiving the complete headers of an http request from a client. In the docs it is not specified if this timeout includes the connection opening/ssl handshake period. Perhaps there's another directive that controls it or client_header_timeout perhaps already includes it?

Score: -1
Ilkin Y. avatar
Back Pressure Event 15004 was detected
cn flag

I have error 15004 and 15005 on excange server installed machine, resource utilzation is ok (according to zabix), what can cause it except memory and space?

Score: 0
Abdul Hadi Achmad avatar
I had an issue in creating a JBOD pool
is flag

So I created a JBOD volume pool with NAS TS-453Be.

Now initially I don't understand how JBOD works after it is created, but there we're an issue that makes me check one of the disk by removing them while the system is still on. It was a JBOD of 1 TB not that much, accumulation of 2 (500gb) HDD. With that small maneuver I did by removing one of the disc while the NAS was still on, the system canno ...

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.