Latest Server related questions

Score: 0
Brian A. Henning avatar
Process Appears and Disappears Randomly in `top`
cn flag

Very similar in theme to this question, but that refers specifically to high-load processes; in my case, it's a quite unobtrusive task. It's not a matter of falling off the bottom of the terminal space; I can filter by that PID and see the one line appear and disappear over time. The task isn't exiting, as the PID is the same and the CPU time (when visible!) continues to trickle upward. Could t ...

Score: -4
Trunk avatar
OVH DKIM Record Not Found
vi flag

I set up a DKIM Record on my OVH VPS recently.

The ultimate record generated is as follows (public key overwritten):

v=DKIM1;g=*;h=sha256;k=rsa;s=email;p=AVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEERRRRRRRRRRRRRRRRRRRRRYYYYYYYYYYYYYBBIIIIIIIIIIGGGGGGGGGGGGGGGGGGGSSSSSSSSSSSSSSSSSSSSSEEEEEEEEEEEEEEEEEEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCRRRRRRRRRRRRRREEEEEEEEEEEET;t=y:s;

No errors show ...

Score: 0
Swapped in new SAS drive, RAID still shows degraded, what next?
cn flag

I need to replace a failed RAID 1 drive on an ancient PowerEdge 2950. The old drive was throwing amber warning lights with the LED showing error 1810.

I have a new SAS drive installed and the controller appears to see it. There are two solid green leds on the new drive:

enter image description here

I've booted into the OS and waited 30 minutes, but it does not appear to be rebuilding the drive.

Rebooting back into Ctrl-R, on the ...

Score: 0
Pasindu Prabhashitha avatar
Kubernetes Nginx Ingress url rewrite for dynamic id in url
at flag

I'm running a Kubernetes cluster on Azure Kubernetes Service(Aks). Currently, I'm having a service called product-service and I have exposed it to the outside using Nginx Ingress. My current ingress configuration looks like below.

apiVersion: networking.k8s.io/v1
kind: Ingress
    metadata:
    name: my-ingress 
annotations:
    kubernetes.io/ingress.class: nginx
    nginx.ingress.kubernetes.io/use ...
Score: 0
drkmkzs avatar
Necessity to backup Cassandra system keyspaces
in flag

I was wondering about the necessity to backup (in order to restore of course) the system keyspaces of Cassandra.

My backup/restore procedure is the following:

  • backup: snapshots (nodetool) + dump of keyspaces (cqlsh DESC keyspace) on all cluster nodes
  • restore:
    • create keyspaces (cqlsh)
    • restore schema.cql of all tables of all snapshots (cqlsh)
    • import tables of all snapshots (sstableloader)

With ...

Score: 0
Red Hat Enterprise 7.4 End-of-Life status
cn flag

I would like to get a definitive and authorized answer on the end-of-life of RHEL 7.4.

I tried to find information via

https://access.redhat.com/support/policy/updates/errata#Maintenance_Support_1_Phase

and

https://access.redhat.com/product-life-cycles?product=Red%20Hat%20Enterprise%20Linux

However, most websites including the last link refers to RHEL 7.9. Where can I find official EoL information ...

Score: 0
dctech avatar
Block access to xmlrpc symlink file with htaccess
th flag

I have a WordPress site I am versioning with the help of symbolic links on an Apache/2.4.52 (Ubuntu) server with Nginx as a reverse proxy.

The directory structure is as follows:

example.com
  wp-admin -> symbolic to different directory
  wp-content
  wp-includes -> symbolic to different directory
  .htaccess
  wp-config.php
  ...
  wp-load.php -> symbolic to different directory
  xmlrpc.php - ...
Score: 0
Securing endpoints on Azure Application Gateway for access by HubSpot
kh flag

We have a legacy system which presents a REST API that has Basic Authentication / this API has so far only been accessible from within our private network.

We've been asked to make this API available publicly. However, our InfoSec team have a rule that Basic Auth is not sufficient (essentially for the reasons given here; though we're using >=TLS1.2 and it's a system-to-system API so there's no b ...

Score: 1
Marco Montevechi Filho avatar
Does a defunct process still allocate resources in the system?
de flag

I have a production machine (Ubuntu 18.04) that runs processes in GPU using Nvidia. A certain process has allocated memory and is now defunct, leaving the GPUs basically unusable.

ps -o ppid= -p

Returns one which means that PID=1 is parent of my defunct process, so i cant kill it.

nvidia-smi reveals that this process has lots of memory allocated in the GPUs. So i figure i can use

nvidia-smi --gp ...

Score: 0
ERO avatar
Curl has incorrect DNS resolution in a dind context
in flag
ERO

I am running a docker:20.10.7-dind container.

Into this one I am running a multi containers app.

One container is a back container. Another one is a keycloak container.

I connect on the back container and have :

back$ cat /etc/resolv.conf
nameserver 127.0.0.11
options ndots:0
back$ cat /etc/nsswitch.conf
hosts: files dns
back$ nslookup keycloak.localhost
Server:     127.0.0.11
Address:    127.0. ...
Score: 0
SandShriner avatar
Adding users from DC to remote desktop users
tl flag

How to add a user from DC to allowed remote desktop users for certain PC?

It lets me choose only users on local machine, although I am connected with a user defined in DC server. A domain user. Even if I try pressing advanced, same thing. Adding domain user to Administrators group is not an option. My goal is choosing from domain users, not local machine ones. Moreover, I am connected with the sa ...

Score: 0
Олег Пона avatar
Fedora Server 38 beta dnf error
sz flag

After this night my dnf on Fedora 38 broken. Always when I try to install some package or run upgrade command i have output

Total                                                                                                                     685 kB/s | 1.2 MB     00:01     
Problem opening package avahi-glib-0.8-22.fc38.x86_64.rpm
Problem opening package avahi-libs-0.8-22.fc38.x86_64.rpm
Proble ...
Score: 0
BradG avatar
Restrict location to just one IP in vhosts not working
bg flag

I am trying to restrict the access to a specific location for just one IP address in the vhosts file but for some reason it is not working. This for apache 2.4.29.

Here is my vhosts file:

<IfModule mod_ssl.c>
        <VirtualHost *:80>
                ServerName subdomain.example.com
                Redirect / https://subdomain.example.com/
        </VirtualHost>

        <Virtual ...
Score: 0
Subito avatar
100 concurrent requests to a Django-App with Gunicorn lead to "54: Connection reset by peer" and 502's
ru flag

I'm hosting a Django-App which serves as an API-Endpoint. Unfortunately the App which uses the API does a lot of concurrent requests on page-load (in the realm of 80-90 requests).

Nginx is running as the reverse-proxy in front of gunicorn and reports the following problem: kevent() reported that connect() failed (54: Connection reset by peer) while connecting to upstream

That lead me to scaling g ...

Score: 1
Dohn Joe avatar
old hardware - certified EOL OS vs. uncertified current OS
us flag

If you are a small business and have some old, non-internet-facing servers around, what are the pros and cons for dealing with the OS situation? We have an old server that is used for numerical and other computational stuff, which needs a re-install to be usable again, hence my question.

Should I install an OS with hardware vendor certification even though it is barely supported or even already o ...

Score: 0
Zemzema avatar
Gluster 11, cannot make replicate volume
gh flag

I'm trying to single node volume, convert to replicate volume by adding one more brick to gluster volume. I'm using command:

gluster volume add-brick replica 2

But every time I get Distributed-Replicate volume.

Type: Distributed-Replicate
Volume ID: 01fd7285-ce8c-4f52-8dd9-8b2f8c179074
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: s1:/storage/brick1/v ...
Score: -1
bv4nuf avatar
Postfix / How to allow sending only to one IP
bi flag

I have a postfix server that is on a public IPV4 address. I want to allow postfix to send emails ONLY to this IPV4 address (the same). Tried many things but no success...

Any idea ? Thanks in advance.

++EDIT01 : there are several domains on this server, and I want ONLY ONE domain to send emails to itself.

Score: 1
NFSv4: machine gets unresponsive when share is accessed without ticket
bd flag

We are implementing NFSv4_kerberos for mounting of home directories on a RHEL 9 machine. The think is that if a user has a cronjob that writes to the mounted homedir after the ticket expiration, the whole machine gets very unresponsive, to the point that I cannot even use the GUI.

Using top, I see this:

root      20   0  622392  74816  12876 R 100.0   0.9   1267:35 udisksd
1878994 ec-fran+  20   0  ...
Score: 3
Poiter avatar
Problems after installation of KB5025229/KB5025230 on Azure VM with Windows Server 2019/2022
id flag

After installation of KB5025229/KB5025230 we are getting errors in our software:

System.IO.IOException: The process cannot access the file '{file}' because it is being used by another process.

After de-installation of KB5025229/KB5025230 the problem is gone. The problem occurred on multiple Azure VM's with Windows Server 2019 and Windows Server 2022.

Software is a c# dotnetframework4.7 asp.net M ...

Score: 0
ensuring nginx always restarts
cn flag

the service setup with systemd for file /lib/systemd/system/nginx.service was set up with a last line in the service block

[Service]
Type=forking
PIDFile=/run/nginx.pid
[...]
KillMode=mixed
Restart=always

to always restart. However, this line seems to have disappeared at some point in time. I seem to recall something about aliases, but the documentation does not specifically refer to them.

There ...

Score: 0
unLimit avatar
How to change volume type when restore volume by backup_id openstack rest api?
mg flag

I create a backup from snapshot_id + volume_id. And that volume_id type is SSD. Then I performed the restore backup operation. Can I change the volume type from SSD to HDD? And at what step is it processed?

Score: 0
MUmla avatar
How to stop auto-rebooting of xen-domain?
jp flag

I want to terminate a xen-domain named xyz. I'm doing so by executing sudo xl shutdown xyz (also tried destroy). The domain is shutdown normally - but it's getting rebooted every time and I don't understand why.

The link to the domains config-file in /etc/xen/auto is already deleted (like described here). What can additionally lead to such a behaviour and how can I stop it?

xen_version is 4.4.1. In ...

Score: 0
najarajar avatar
Unable to boot SunOS 5.8
am flag

I had to hard reboot a SunOS 5.8 server due to a networking fault. On giving 'boot' command on OK prompt, I get the following messages

Can't read disk label. Can't open disk label package Boot device:
secondary File and args: Can't read disk label. Can't open disk 
label package

Can't open boot device

I am unable to run fsck on OK prompt. How should I go about troubleshooting this error?

Its a Sun Enter ...

Score: 0
Johnathan Martin avatar
Diagnosing mySQL Random CPU Spikes
zw flag

Our organization has a fairly advanced (as in many moving pieces) web application that's been working great up until recently, yet no noticeable changes have been made.

There is the Apache Web Server, the mySQL Server (Data Processing), and then another mySQL Server that handles the repetitive requests for the public. Traffic influx to the main web server would almost only impact the secondary SQ ...

Score: 1
Andy2 avatar
Kernel reboot without log during starting the crash kernel
sr flag

I am testing crash kernel image feature with arm64 device, kernel version is linux-5.4, now i am trigger kernel crash via "echo c > /proc/sysrq-trigger", then kernel would trigger null-pointer crash and save context, then start the second kernel. Now i see kernel reboot without any log, so i need to find out the cause that kernel reboot.

console log is:

AP488B:/# echo c > /proc/sysrq-trigger
[04 ...
Score: 0
Hamed Zargar avatar
How to view total traffic usage of each user in ocserv
mw flag

I'm using ocserv as VPN server in my company on ubuntu, and I want to view how much traffic each user is using. Users are set in ocpsswd file. Do ocserv have this feature or any library I can use? As I search Google and I'm confused. Anybody can help me?

Score: 4
Rtype avatar
ESXI 8.0 Host to NFS slow vs Guest to NFS
gn flag

I have been trying to track down why my backups have been slow using ghettoVCB from the ESXI host.

I'm currently backing up my virtuals using ghettoVCB to a NFS share on TrueNAS from the host OS.

When I copy files to the NFS share from a guest (Ubuntu 20.04) on the ESXI machine I get about 257MB/s (which is about right as I have a dedicated 2.5gb channel between the NAS and ESXI)

su@test:/mnt/guest$ time ...
Score: 0
LorneCash avatar
Traefik on Synology: LetsEncrypt says it has DNS issues but the certificate file looks valid
om flag

My curent Network:

Router         - 192.168.1.1   (static)
Windows PC     - 192.168.1.10  (static)
Synology NAS   - 192.168.1.11  (static)
DockerPihole   - 192.168.1.12  (macvlan-static)
DockerUnbound  - 192.168.1.13  (macvlan-static)
DockerTraefik  - 192.168.1.14  (macvlan-static)

Docker Bridge Network (For Traefik to work)

DockerTraefik  - 192.168.10.2  (bridge-static)
DockerNginx1   - 192.168.10.10  ...
Score: 0
user3804363 avatar
Nodelocaldns Support in Microk8s
gn flag

Do we have support for Nodelocaldns in Micork8s clusters. If not, How it is handling the Cluster DNS performance without caching agent?

Score: 1
Iván Jf avatar
MySql Service Not Starting in cluster with DRBD
US flag

I have a high availability cluster with two nodes configured, after a maintenance carried out by an external company when restarting the system my mysql resource stopped working.

when executing the drbd-overview command I get the following.

Node Principal:
0:home Connected Primary/Secondary UpToDate/UpToDate C r-----
1:storage Connected Secondary/Primary UpToDate/UpToDate C r-----
2:mysql StandAl ...

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