Latest Server related questions

Score: 1
mon avatar
How is GCP GKE VPC native cluster IP alias implemented?
ng flag
mon

How does the GCP/GKE VPC native network implement the alias IP assignment to each pod?

As in Google Kubernetes Engine – Networking, each Pod will have an IP from secondary IP CIDR range of the subnet (e..g 10.4.1.1).

enter image description here

Each pod in a Linux instance has its veth I/F. How does each veth(i) for pod(i) is linked to the network interface of the Linux box in which the pods run? Each pod (veth) has its own ...

Score: 0
Daniel avatar
Mount NFS error on Centos8
us flag

Mount shared folder via NFS into Synology but showing error. What did i missing here?

[root@localhost ~]# mount -t nfs 192.168.1.20:/volume1/NetBackup

mount: 192.168.1.20:/volume1/NetBackup: can't find in /etc/fstab.

As per their site said https://kb.synology.com/en-us/DSM/tutorial/How_to_access_files_on_Synology_NAS_within_the_local_network_NFS

Preview of synology manual

Score: 0
biwiga avatar
Apache crashing because of high memory usage
th flag
  CPU[||||                                                    3.3%]     Tasks: 71, 155 thr; 1 running
  Mem[|||||||||||||||||||||||||||||||||||||||||||||||||1261/1875MB]     Load average: 0.00 0.02 0.01 
  Swp[                                                       0/0MB]     Uptime: 02:17:35

  PID USER      PRI  NI  VIRT   RES   SHR S CPU% MEM%   TIME+  Command
 2385 centos     20   0  110M  2136  1228 R ...
Score: 0
rmarles avatar
Cannot RDP across one-way forest trust from child domain
sz flag

We have an AD identity forest with a one-way incoming transitive forest trust from a resource forest. Name suffix routing is enabled.

Users in the identity forest root domain can RDP to hosts joined to the resource forest

however,

Users in the identity forest child domain cannot RDP to a host in the resource forest - they get an error message "The security database on the server does not have a compute ...

Score: 0
SR-IOV slow on new Hyper-V 2019 host
us flag

I've got a PowerEdge R6525 with a quad Intel x710 10 gig NIC.

All firmware up to date, enabled SR-IOV in the NIC firmware, BIOS/Lifecycle controller, created the vSwitch with it enabled and have enabled on the VM's but I'm only getting 2-4Gbps using iperf3 between the VM's or the VM and host. Just have 2 2012 R2 VM's on the host until I get it tuned. I followed the I tell documentation as well an ...

Score: 1
mon avatar
GCP - why cloud NAT needs cloud router?
ng flag
mon

Why GCP Cloud NAT needs BGP/Cloud Router?

enter image description here

Cloud Router documentation

Cloud Router enables you to dynamically exchange routes between your Virtual Private Cloud (VPC) and on-premises networks by using Border Gateway Protocol (BGP)

Cloud NAT overview

You configure a NAT gateway on a Cloud Router, which provides the control plane for NAT, holding configuration parameters that you specify.

Each C ...

Score: 0
Tom Cumming avatar
Monitoring an NFS mountpoint on a NetApp box for changes
ar flag

I need to monitor an NFS mountpoint for changes (files written or created). I am running Linux (a RedHat variant to be precise). I also am a NetApp user (i.e., I don't have admin privileges on the NetApp box).

There are various filesystem monitoring packages out there, but I would prefer something that is known solid on RedHat and friends.

Something with python bindings is preferred.

Any ideas?

Score: 2
zire avatar
Using a Dockered Unbound DNS server as a resolver for other containers
cn flag

I'm using Unbound DNS server as a resolver for my home LAN. It runs as a Docker container on the default bridge network and in general it works as I'd expect it to, except when trying to use it as a resolver for the other Docker containers hosted on the same machine.

I tried setting the nameserver in the containers' /etc/resolv.conf to the Docker host's LAN address, but this is clearly not the ri ...

Score: 0
The MW avatar
Gmail rejected the email I replied to the sender (hosted on google)
cn flag

This is getting ridiculous now. A client sent me an email from his own email domain (hosted by google), and google rejected the email I replied to him.

I seriously think that google is doing this on purposely so that people can use their server for emails.

Here is the reply I received from google

This is the mail system at host server.mydomain.com.

I'm sorry to have to inform you that your messa ...
Score: 0
0diseus avatar
Test latency from NFS to a NFS-client
cn flag

My team opted for a self build NFS server (using an EC2 instance to serve the other instances), instead of using AWS EFS. We would like to test the latency that our NFS has, then to compare it versus the EFS.

Is there a way/tool to test latency of these NFS servers?

Score: 0
VSFTPD doesn't appear to be reading config file
fr flag

Alright, I'm just going to keep it brief since I don't have time. In short, I want VSFTPD version 3.0.5 to not do /home/username/, but rather /ftpdata/user/. Additionally, all attempted changes doesn't appear to reading from the configuration file I wrote. Here's the configuration file, the local_root and user_sub_token is at the bottom. Configuration file.

Score: 0
haher avatar
Error 500 Internal Server Error from varnish, but no error from php-fpm or httpd or nginx
cn flag
  1. checked the logs /var/log/website/php_errors.log, nothing was found
  2. checked why it was returning an error and it's because of the backend somehow and varnish hit sub vcl_error as a result
  3. it used to work yesterday and with no code change and no server change, it stopped working
  4. no exception logs from php
  5. no log from httpd that explains the shutdown, latest logs come from 3 days ago when the server was ...
Score: 0
Getting Error ID 4625 for a mapped drive but user can access drive
jp flag
Sam

We have a work machine that can access a mapped network drive just fine but the server (2012 R2) is throwing out Audit Failure Error ID 4625 An account failed to log on. Failure Information: Failure Reason: Unknown user name or bad password. Status: 0xC000006D Sub Status: 0xC000006A

I deleted the mapped drive and remapped it. It shows the Audit Success in logs but soon after, it s ...

Score: 0
Unable to Log In to Domain Computers with Spoiled Domain Controller
hu flag

The domain controller in our domain network is completely down and we don't plan to repair it. We couldn't log in to the computers because of that.

enter image description here

Worst case, we even forgot the local admin password. We are trying to use the bootable USB to reset the local admin password but the BIOS requests for an admin password which we don't know.

enter image description here

We are really stuck now and don't what to do. We contacted D ...

Score: 0
Whey can't I unistall powershell V3.0 so that I can later upgrade to powershell V5.1
id flag

I have a windows server 2008 R2 SP1. I am trying to unistall powershell 3.0 to install v 5.1, I seem to not get v 3.0 off my server I have tried unistalling it thruogh the following options.

  1. Thruogh cmd comand (cmd.exe /c wusa.exe /uninstall /KB:2506143 /quiet /forcerestart and wusa.exe /uninstall /kb:2506143).
  2. Use of Windows Update in Control Panel to locate and uninstall the updates: KB2506143
  3.  ...

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