Latest Server related questions

Score: 0
cacti container mysql service unable to start
cn flag

I tried to run this cacti container but MySQL failed to start, any idea, I have tried all sorts of answers from the site.

https://hub.docker.com/r/quantumobject/docker-cacti


[cacti@rhelvm3 ~]$ podman rm 82564cf157fe
82564cf157fec818d6212cf0dfcf2e669f3f993010895903702d778c4872be87
[cacti@rhelvm3 ~]$ podman ps -a
CONTAINER ID  IMAGE                                        COMMAND        CREATED     STATUS ...
Score: 0
Cant install certbot using snap return: Run configure hook of "certbot" snap if present
bm flag

I want to install certbot using snap, but when I tried Official instruction:

sudo snap install core; sudo snap refresh core
sudo snap install --classic certbot

but returns:

error: cannot perform the following tasks:

  • Run configure hook of "certbot" snap if present (run hook "configure": /var/lib not root-owned 1000:1000)

Previously, I uninstalled certbot(from apt) by using the below command:

 ...
Score: 4
AWS: What is the difference between Burst Balance and EBS IO Balance metrics?
de flag

AWS Docs describe Burst Balance and EEBS IO Balance in the following way:

BurstBalance The percent of General Purpose SSD (gp2) burst-bucket I/O credits available.

EBSIOBalance% The percentage of I/O credits remaining in the burst bucket of your RDS database. This metric is available for basic monitoring only. This metric is different from BurstBalance

However, as far as I know, the docs do not exp ...

Score: 0
MWB avatar
How to calculate the QuickPath Interconnect (QPI) bandwidth?
ng flag
MWB

For Xeon E5-2697 v2, Intel lists:

Bus Speed = 8 GT/s

# of QPI Links = 2

According to Wikipedia, one must know the QPI frequency and link width to calculate the QPI bandwidth, but these don't seem to be listed here. How to calculate it then?

Score: 0
the_floor avatar
Substitute a string into timestamp
cn flag

I want to use mod_substitute or mod_ext_filter to replace a string with the current timestamp in miliseconds.

I tried so far, but it's not working.

Substitute "1s/myString/&$(date +"%T.%3N")/"

ExtFilterDefine testfilter mode=output intype=text/html cmd=/bin/echo "$(sed -E "1s/myString/&$(date +"%T.%3N")/")"

Does someone has the idea to get this running? I was also thinking about, to combine it w ...

Score: 0
user495431 avatar
Openstack Wallaby: The Keystone service is temporarily unavailable
in flag

In a fresh openstack installation Nova refuses to work:

root@moscontrol:~# openstack hypervisor list
The server is currently unavailable. Please try again at a later time.<br /><br />
The Keystone service is temporarily unavailable.
 (HTTP 503) (Request-ID: req-f2da21b3-fca8-408c-83ba-bf74f132c6d6)
root@moscontrol:~#

openstack token issue, openstack image list commands work.

Attached my no ...

Score: 0
Aby Golzar avatar
Failed to connect to port 443: Connection refused cloudflare firewall
mm flag

I'm trying to send a POST request to one of my websites which uses Cloudflare. but it returns Failed to connect to domain.site port 443: Connection refused I thought it might be the Cloudflare firewall that is blocking the connection, and I tried creating a firewall rule in the Cloudflare panel that allows my IP address. it didn't work. I contacted my hosting and they said their firewall is not block ...

Score: -1
Ensuring internet is disabled for devices connected to second router
es flag

I think I have two routers:

Router A is connected to WAN and the Router A DHCP gives out IPs in range 192.168.0.10 to 192.168.0.128.

Router B is connected by ethernet cable to router A and gives out IPs in range 192.168.0.129 to 192.168.0.253.

The aim is that devices connected to Router B WiFi cannot connect to the internet - so, Router A has a rule applied that disables the internet for IPs 192.168.0. ...

Score: 0
Emil Avramov avatar
ffmpeg rtsp server not stopping when peer disconnect
ar flag

There is an ffmpeg instance running as a server on a VPS, that converts RTSP video to HLS and serves it to the web (using Apache). The RTSP video comes from a computer somewhere else (in another town in this case), to which I have an IP camera connected. The computer takes the RTSP data FROM the IP camera and retranslates it TO the VPS.

This is the ffmpeg command I'm using on that computer (the r ...

Score: 0
Cyberpower678 avatar
Poor TCP performance on Windows 10 GbE
in flag

I have a desktop with an Intel 9900K and 32GB of RAM.

Attached to it is an Intel x540 10 GbE adapter.

On Linux, iPerf to my server gives me 9.4 Gbps up and down. iPerf to the loopback (localhost) gives me around 42 Gbps on the desktop.

On Windows 10 21H1 same desktop, I get 5 Gbps down and 2.3 Gbps up. iPerf to the loopback yields the same exact numbers.

Anyone got any ideas what is happening here, and t ...

Score: 1
Jonathan Bailey avatar
Are the snapshots referenced by an AMI created from an EC2 instance independent of other snapshots that I've created on the EC2 instances EBS volumes?
gs flag

We've recently migrated a system off of a set of EC2 instances, and now wish to retire those EC2 instances, first by creating an AMI of and then terminating each EC2 instance.

Over time, we've created a number of EBS snapshots of the volumes attached to the EC2 instances as a part of our maintenance strategy.

Will the EBS snapshots referenced by the AMIs we create be independent of the maintenance E ...

Score: 0
Nginx robot proxy_pass to another port with change url
cn flag

I Have a problem with nginx configuration. If user agent is "robot" - then proxy pass to another port with setting corrent uri as argument

for example : have two services localhost:5000 and localhost:6000 port all non robots pass to 5000 and robots pass to 6000 with url like :

normal https://test.page/test/test -> http://localhost:5000/test/test
robot  https://test.page/test/test -> http://local ...
Score: -2
luek baja avatar
Do some companies throttle servers at times of low use to save power?
ro flag

I am attempting to index a large amount of data from a website and the last thing I want to do is DoS it accidentally. To prevent this, I was planning on doing it at night since it is not an international website.

But if they throttle server performance when not used, this would be a problem.

Is throttling server performance ever used by companies to conserve power?

Score: 0
Findus Pedersen avatar
Immutable Linux images - how far can and should I go?
vu flag

Immutability is cool in order to realize consistency, predictability and reliability, and I don’t see any reason why I shouldn’t strive for OS-level immutability when deploying my application on Linux VPS’es from different cloud providers around the world. With tools like Packer to help create OS images, this also seems to be the way to go.

For some cloud providers (e.g. Digital Ocean), I c ...

Score: 0
user3214631 avatar
Vulnerability Assessments: How to Compare Installed OS updates vs Available OS updates?
gb flag

I have been given the task to prepare a report and identify known security vulnerabilities based on the computer's configuration files. The configuration file of the computer was created using SIW System Information for Windows(gtopala.com). Since I am receiving the SIW files from a remote location, I am unable to perform a scan. Part of this report I can see installed Software updates.

I am tryi ...

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