Latest Server related questions

Score: 0
ya chen avatar
Error when create a MicroK8s cluster : Connection failed. The hostname (xx) of the joining node does not resolve to the IP "xx". Refusing join (400)
th flag

I have installed microk8s(1.24/stable) on two machines. The ip of the two machines are:172.29.99.187, 172.29.99.188. I operate the command at 172.29.99.187:microk8s add-node

Output:

From the node you wish to join to this cluster, run the following:
microk8s join 172.29.99.187:25000/57a191d07ce8fe360e13f4f1e9026ce8/5be428d4e916

Use the '--worker' flag to join a node as a worker not running the  ...
Score: 0
Export Local Group Policy Settings to Another Computer
in flag

I have a problem that can solve, a client of mine have access free laptop for young people to research job or do paperwork. Those laptop cannot be on the domain. The administration of those computer is done via the "Veyon" application.

I create on each of them a user account with really strict Local Group Policy Settings and now I want to export those GPO to the other user on the 8 laptop.

To this e ...

Score: 0
pcspkr not producing sound using beep (Proxmox): debugging ideas?
my flag

I'd like to use the beep command for simple diagnostics for my headless Proxmox-machine in case networking fails. While the BIOS-beep and even the GRUB-beep work fine, issuing beep via SSH does not produce the expected sound; instead, a short "clack" -- like plugging in speakers -- and a command-corresponding pause is all I get.

Steps taken:

  • I installed a known working pcspkr (hardware) and confir ...
Score: 0
robinDoors45 avatar
Cyclone DDS: running ddsperf script
de flag

I have a problem running the perfscript that comes with Cyclone DDS, see Here, to measure throughput and latency.

I have a setup with two identical containers that cloned, built and installed CycloneDDS and they can both ssh into each other without passwords (this is just for testing). Both containers are able to talk to each other when I manually use ddsperf on them (run pub on one, sub on the other ...

Score: 0
Cannot connect to FileMaker Server through Wireguard VPN tunnel
de flag

I have setup a Wireguard VPN tunnel between a hosted VPS (running Ubuntu 20.0.4) and a FileMaker Server box on my Home LAN. From the VPS in the ping the FMS box via the command line and a php script. I can also SSH into the FMS box from the VPS so the logical conclusion is the VPN tunnel is working.

However the front end website (php api based) on the VPS cannot connect to the LAN based FMS datab ...

Score: 0
Maksat Baigazy avatar
ip link add test_team_slave type team_slave - RTNETLINK answers: Operation not supported
cn flag

Trying to set up teaming on a Crux Linux with a custom kernel. I have teamd and teamdctl already installed on my system, I managed to find kernel modules for teaming and successfully enabled them. Tested it by running ip link add testTeam type team, which was failing before rebuilding the kernel. Right now I have issues with the team_slave type, and I can't find which module I am missing. I would app ...

Score: 1
Arjun Mehta avatar
Memory not available but no process is using it
ao flag

We are using a centos 7 server. The free -m command has the following output.

[root@211 ~]# free -m
              total        used        free      shared  buff/cache   available
Mem:          31841       31173         389           0         278         178
Swap:        382975          45      382930

It shows that most of the memory is being used. It's not used for caching the filesystem but by s ...

Score: 0
What's the deciding factors of the number of tcp ack packages for a tcp data-transmission request?
cn flag

I encountered a counterintuitive phenomenon that the rtt(Round-Trip Time) of request from client to a low-network-latency server(ServerL) is higher than the one from the same client to a high-network-latency server(ServerH). The interaction between server and client is quit simple: Client just sends a large bytes stream (1~2M bytes) and server accepts all the bytes and reply a simple ok return code.

Score: 0
Balaïtous avatar
How to disable Docker Network Isolation?
ve flag

I use gitlab, gitlab-runner, sonarqube, nexus, ... with docker compose to test build chains before implementing them on my company's servers. These servers use the same network bridge.

This worked fine on my old ubuntu, but since I'm using debian, containers on the default bridge can't connect to the docker compose bridge anymore.

Since this is not an operational instance of docker, how can I disabl ...

Score: -1
Zoey Malkov avatar
What records can I delete and change
in flag

I own the website example.com which has the IP 123.456.789.12. Its hosted with HostingCompany and the nameservers are hosted with Cloudflare. Cloudfare auto generated my DNS records. Which record actually makes it so when customers visit example.com or www.example.com it takes them to my website? I have 9 A records like autoconfig, autodiscover, cpcalendars etc which I think are essentially useless to  ...

Score: 2
synacksoldier avatar
Why does my RSA DANE TLSA work, but my ECDSA DANE TLSA fail?
id flag

I've purchased two single domain, wildcard SSL certificates from Namecheap/Sectigo/Comodo. I generated my CSRs in the typical fashion using openssl.

$ openssl req -newkey rsa:4096 -keyout example.com.rsa.key -out example.com.rsa.csr
$ openssl genpkey -genparam -algorithm ec -pkeyopt ec_paramgen_curve:P-256 -out example.com.ecdsa.pem
$ openssl req -newkey ec:example.com.ecdsa.pem -keyout example.com ...
Score: 0
Irfan Habib avatar
nginx reverse proxy not working when multiple ports defined for REST api
bd flag

I have a next js app which I deployed on port 3000 and set the proxy 3000 on nginx.

Now I have my custom Node js Backend server which I want to run on the same server on different port 5000.

I setup the nginx like this

location / {
        proxy_http_version 1.1;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
       ...
Score: 0
Need help in Moving files to the backup directory except the last 10 files based on file NAME not date modified
gb flag


I have a situation where a server is creating journal files (MJ00001-MJ000x) and I want to move all the files to a backup directory but need to keep the last 10 in there to get the archive. I looked at robocopy and Powershell Move-Item but the problem is the date modified is always the current day as the server looks to them if they are in the directory (hence I can't use move keeping last 10 based ...

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