Latest Server related questions

Score: 0
Rait avatar
Oracle database export error
cm flag

I am trying to export oracle database but I get error. the error is similar to this question Oracle database schema export, but if I run the the query SELECT o.status, o.object_id, o.object_type, o.owner||'.'||object_name "OWNER.OBJECT" FROM dba_objects o, dba_datapump_jobs j WHERE o.owner=j.owner_name AND o.object_name=j.job_name AND j.job_name NOT LIKE 'BIN$%' ORDER BY 4,2; i will get no rows select ...

Score: 0
vinv27009 avatar
Facing issue with installing Rocky Linux 8.6 on EXSI 6.0
al flag

I installed Rocky Linux 8.6 on Vmware EXSI 6.0 after installation when the system is trying to boot after the grub splash screen I am getting an error of Kernel Panic - not syncing: Fatal exception

Kindly help me to fix this & provide a solution please its a request

Score: 0
leauradmin avatar
can not mount EBS volume to centos EC2 instance
mz flag

I have an ec2 instance running centos and I want to add an EBS want to it. I created and attached the volume to my instance. my volume is attached as /dev/sdf. But when I try to check if there is any filesystem by typing the command file -s /dev/xvdf here as root, i get this message :/div/xvdf: cannot open (No such file or directory)
how should i do that? ?

Score: 0
Logu avatar
Pods are not getting created in kubernetes due to CNI issues
dk flag

When kubernetes is deployed coredns pods are not getting created or it takes hours to create and intermittently fails. Same case with few other pods created by user as well. Looks like it is not able to connect to itself for Liveness or Readiness probes.

The error shows

"networkPlugin CNI failed to set up pod "coredns-558bd4d5db-pflq2_kube-system" network: unable to set hairpin mode to true for brid ...

Score: 2
Massimo avatar
How to automatically enable Kerberos delegation to Windows Admin Center on all servers?
ng flag

We want to use Windows Admin Center to manage our environment; WAC will run on a dedicated server in gateway mode, and administrators will manage servers through WAC.

This requires setting up Kerberos constrained delegation to allow WAC to operate on the servers on behalf of the users; this is well documented, and works this way:

$wac = Get-AdComputer "WAC Server Name"
$server = Get-AdComputer "Manage ...
Score: 3
Bee_Riii avatar
Failover all cluster roles at once
co flag

I'm setting up a failover cluster on Azure 2019 VMs. I've got to set up both a file server and a generic service. Ideally I'd like to always move them both to the same node rather than having to do it individually. Is there a way of grouping these together so when one role moves so does the other?

I'm not seeing any options in the GUI or within powershell but I might just not know what to look ...

Score: 0
Andrey Sapegin avatar
storcli: A proper way to replace a drive in RAID0 or How to migrate virtual drive WITH data loss?
in flag

I have a RAID0 where I need to replace a drive and can lose the data. In order to replace it, I do:

storcli64 /c0/e1/sX set offline

storcli64 /c0/e1/sX set missing

storcli64 /c0/e1/sX spindown

then replace drive physically, delete foreign topology and insert the drive:

storcli64 /c0/v1 delete preservedCache

storcli64 /c0 /fall delete

storcli64 /c0/e1/sX insert dg=x array=y row=z

The next step ...

Score: -2
iJohnnyCash avatar
Exchange Online & Exchange Online Archiving
cn flag

I thought Exchange Online Archiving was like a separate mailbox (maybe like a shared mailbox) and that I had to choose by myself the emails/items one by one, which I wanted to be saved there instead of the primary mailbox. Mostly I use the Desktop outlook software and I don't care for the Web Interface.

When I realised that is not working like this, I create a support ticket to Microsft and I sta ...

Score: 0
Peter C. Glade avatar
Route traffic to Kubernetes cluster using iptables
ug flag

I have a kubernetes cluster (currently only 1 node) running on my root server (netcup) and try to route traffic to it. Im pretty bad in networking so hopefully someone can help me.

On the cluster metallb is installed and calico as CNI. Metallb is responsible for assignment and announcement of IP addresses to K8s-LoadBalancers which works fine internally. So i can reach a load balanced service from with ...

Score: 0
Mauritz Funke avatar
Nano surpress errors
ng flag

I have a small script that copies my dotfiles to servers when I connect.

One of them is my nanorc.

My problem is that I have some legacy servers which dont have the newest version of nano installed.

I get some messages because my .nanorc file has some variables set which the old version dosn't support.

Is there any way I can supress the error messages?

Score: 0
Anurag Sinha avatar
Query Related to Domain Limit Exceeded Exceptions
eh flag

We have below 2 Scenario based Queries after reading the Domain Limit Exceeded Exceptions doc

  1. When the 11th Domain is added to Authorized domains then the Domain Limit Exceeded Exception will be seen for all the domains or only for the 11th added Domain-related API calls?

  2. When the 11th domain is added then a message pops up for app verification. And App review takes at least 2 days to at max 6 weeks ...

Score: 0
5lovak avatar
Change Azure VM Disks from SSD to HDD
cn flag

I have an Azure VM with 8 disks attached, and all of these disks are formatted as one disk on the OS. They are all SSD's, but I would like to change them to HDD's. Can I just do this for each of them in the portal with impunity, or will this cause an error on the OS due to the fact they are all formatted as one? I just want to make sure I'm safe to do this without potentially corrupting a lot of data he ...

Score: 0
Why snmpget output is different when MIBS environment variable is defined?
us flag
$ export MIBS=
$ snmpget -Oqv -v 2c -c public 10.xxx.yyy.zzz .1.3.6.1.4.1.3375.2.1.14.3.2.0
"ACTIVE"

but

$ export MIBS=F5-BIGIP-SYSTEM-MIB
$ snmpget -Oqv -v 2c -c public 10.xxx.yyy.zzz .1.3.6.1.4.1.3375.2.1.14.3.2.0
ACTIVE

Why that difference in output when MIBS environment variables has a value?

Score: 0
user584018 avatar
How can I persist the `redirect_uri` with `https://abc.xyz.com/` instead of `http://localhost`?
cn flag

I am new to Apache Httpd server and trying to configure the reverse proxy for an external site and below is my configuration:

SSLProxyEngine on
RewriteEngine on
ProxyPassMatch ^/(.*)$ https://abc.xyz.com/$1
ProxyPassReverse ^/(.*)$ https://abc.xyz.com/$1
RewriteRule /login-callback https://abc.xyz.com/login-callback"

When I an running httpd.exe and in browser when I am trying to browse http://localhost ...

Score: 2
Rafik avatar
Extend /var partition on Centos Stream 8
ug flag

During the installation of my centos stream 8 OS I gave /var a size of 10GB thinking it would be more than enough, but after I started using docker I found of that it takes too much space on the /var partition as it is shown by the df command:

[root@compute-07 ~]# df -h
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs              28G     0   28G   0% /dev
tmpfs                 28G    ...
Score: -1
Andreas Andersen avatar
Possible to host own SMTP server without port 25 open
sc flag

I have a VPS on Digitalocean and Hetzner, but both block port 25, so I cannot host my own SMTP server here. However port 587 is open, so my question is: Is it possible to host your own standalone SMTP server, when port 25 is blocked, so it uses port 587 instead?

Score: 0
João M. S. Silva avatar
Linux process scheduling by user?
in flag

It seems Linux schedules process execution independently of the user of the process. So, if one user is running 100 processes and another user is running 1 process, in average, the first one will get 100x more CPU time than the second one.

Is there any possibility to balance CPU time by user, meaning that, in this example, both users get 50% CPU time?

Score: 0
Mike Parker avatar
Making SCSI tape drive controller accessible to VM OS using virt-manager
jp flag

I'm trying to make a SCSI tape drive drive controller card (or strictly, the tape drives and robotic tape library hanging off it) visible to the OS running on the VM.

I'm running RHEL 7.9 on both the hypervisor and VM guest.

On the hypervisor, a lsscsi gives:

> lsscsi
[0:2:0:0]    disk    LSI      MR9260-4i        2.13  /dev/sda 
[5:0:0:0]    tape    IBM      ULTRIUM-HH7      G9Q1  /dev/st0 
[5:0:0:1] ...
Score: 0
DENIS DENIS avatar
Unable to login as root user
az flag

[Ubuntu server]

I was able to login to the server just fine for days. And now I cannot login with the root user with password and private key both are not working.

Luckily I am currently logged in as the root user. Basically I logged in as the root user and have been doing stuff for a couple of hours and then I went to another terminal to login with and it just does not work. I get "Permission denie ...

Score: 0
Marcus Lashley avatar
Unable to create a GCP machine due to access rights
us flag

I have multiple GCP servers and am trying to build a new one based on cpanel with ubuntu. Now whenever I try and create it tells me I'm unable to build and try giving access rights to my account.

I've gone in and added google compute admin to my account and a firewall admin still failing

Any ideas

Score: 0
Alex avatar
How can I avoid the error TCP_MISS_ABORTED/000 when uploading files through squid?
in flag

While uploading big files, > 10MB, through a squid V5.6, I noticed that they failed and/or were retried.

The error has been logged multiple times in the logs:

1671092710.452    423 ::1 TCP_MISS_ABORTED/000 0 PUT http://YOUR_URL - FIRSTUP_PARENT/YOUR_UPSTREAM_PROXY -

How can I get this big files upload working without errors?

Score: 0
Adephx avatar
How to start a tmux session as a non-root/separate user service while also running a shell script?
ng flag

I'm currently running an automatic service with the following content:

Description=Valheim Dedicated Server

[Service]
User=steam
Group=steam
ExecStart=/opt/steam/valheim/start_server_bepinex.sh
Restart=on-failure

[Install]
Wants=network-online.target
After=network-online.target
WantedBy=multi-user.target

I would like to change the service to do the following:

  1. Start a tmux session > tmux new -s Va ...
Score: 1
Dimos Masouros avatar
Bridge interface causes high CPU utilization
mx flag

We are facing a weird issue with a server we have on our laboratory. Specifically, the server shows high CPU utilization from low priority processes (blue color in htop) with 50% of the cores appearing to have 100% utilization as shown in the screenshot below.

htop high utilization

However, in the list of running processes there is no process that consumes this CPU:

$ ps aux --sort pcpu | head -n 20 ...
Score: 0
user17745726 avatar
Tomcat MQ Topic: Duplicate messages
gy flag

We are facing issues with duplicates on our tomcat setup. There are two tomcat nodes having each subscriber.

Below tomcat configuration on both tomcat nodes

Topic Connection

HOST="gbtstssis1.systems.uk.hsbc" PORT="15125" CHAN="RCSX.GB.C6" TRAN="1" SCPHS="TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384" QMGR="DGBLHSSIS1" CID="XCS-Equity-UAT-TOMCAT-53-Server" BSUB="SYSTEM.JMS.ND.GB_RCSX" CCSUB="SYSTEM.JMS.ND.CC.GB_RC ...

Score: 0
Hossam M avatar
how to continues netstat a port and save it to text file with time stamp for each netstat
pe flag

I am using a system which is integrated to other system using a specific port and recently I am facing multiple interruption in the integration, and I need to monitor the port "48823" for a complete day and save it to a text file with time stamp for each netstat status as below example:

15/12/2022 13:37:00 TCP 10.10.10.150:48823  10.10.10.151:4003 Established
15/12/2022 15:22:10 TCP 10.10.10.150:48 ...
Score: 0
Alessio Raddi avatar
Can't download Jenkins on Ubuntu 22.04
lc flag

I'm trying to download and install Jenkins on my VPS after reinstalling the image (Ubuntu 22.04) but I always get an error while trying to download it.

I followed Jenkins original guide to get it installed but it's not working.

This is the terminal's output:

sudo apt-get install jenkins
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following pa ...
Score: 0
Southpaw1496 avatar
Large Docker images get stuck towards the end of downloading
pl flag

Whenever I pull medium-to-large Docker images onto my server, they download almost all the way, but then they get stuck for multiple minutes before eventually finishing. I've looked in the Docker daemon debug logs, but they only indicate that the image is being downloaded, with no errors or warnings of any kind. I don't think it's a rate limiting issue, as it happens both on the Docker Hub and ghcr.io,  ...

Score: 1
heeeresjohnny avatar
SSH "login" every few seconds on storage server from backup server
ee flag

I recently inherited a server rack from my predecessor and am currently going through the logs and docs to see what is what in the stack.

While checking the logs of the main storage server, I noticed that there are SSH logins every few seconds in the form of:

server1 sshd[pid]: Accepted publickey for root from ip-of-second-server port 50xxx ...

and a little later:

server1 sshd[same-pid]: Receive ...

Score: 0
G20map avatar
how to start nginx with ansible?
ie flag

I installed nginx manually on my server, I started it to see if everything right then I "stopped" it.

Active: inactive (dead) since Thu 2022-12-15 02:58:37 EST; 7min ago

I am now using an ansible playbook to start it from my local computer but I get this error

fatal: [jo]: FAILED! => {"changed": false, "msg": "Unable to start service nginx: Failed to start nginx.service: Connection timed out\ ...
Score: 0
Ilya Shmadchenko avatar
Couldn't reach the virtual machine behind NAT via the white address
lu flag

I've emulated the simple network in my VMware environment: scheme

The host1 is in the internal network 192.186.0.0/24, the host2 is in my home network 192.168.0.0/24.

The router has two net adapters in both networks.

All machines are operated by Ubuntu Server 22.04.

I've installed iptables on router and configured it.

root@router:~# iptables -S
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-A INPUT -i  ...

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