Newest Questions

Q&A for system and network administrators

Nginx + PUT + body content = 405 Not Allowed

I am trying to do a PUT request with some body content and getting the error: 405 Not Allowed The request only fails when the Content-Length is greater than 10270 characters. Otherwise the PUT ...

crtc config fails when changing resolution with Xrandr from 4K

I am currently trying to change the resolution of my screen from 3840x2160 to 1920x1080. The screen is set to display 0 on output HDMI2. I am running an app via startx on display 0. When I try to run ...

Windows Server with two vlans

I have read multiple post on similar issue but still could not find a solution. So if someone can help here. I have a Windows VM with two NICs on two different vlans. NIC 1: 10.243.237.167/27 , gw 10....

Where I config CNAME in VPS Server without Cpanel

I'm a newbie in linux/server configurations and I'm trying to redirect all subdomains of specific domain to specific url: *.domain.com -> domain.com/test With Cpanel visual support and CNAME I got ...

failed to read BIOS file: No such file or directory

I'm trying to install CentOS 7 in a VM from an ISO, but I keep getting an the error libxl_dom.c:892:libxl__load_hvm_firmware_module: failed to read BIOS file: No such file or directory. Here is my ...

How dangerous is exposing FreeNAS Corral docker to web? [on hold]

I am new to Unix, FreeBSD and FreeNAS, with some experience with Linux. What I have learned so far is that primary goal of Docker is not to be safe, but to be easily manageable, portable etc. But ...

Exim MySql Bug?

In an Authenticator for a outgoing smtp connection I have this: remote_login: driver = plaintext public_name = LOGIN client_send = : user : password And that works fine. If I switch out the ...

sftp No supported authentication methods available

I am trying to setup sftp to upload/download files from a specific directory (var/www/mysite.com) My issue is when I try to connect using Filezilla and I get an error stating No supported ...

Handler for fastcgi-script returned invalid result code 32

There is an error on a WordPress SSL site in my VPS server that is generating almost every couple of minutes. It is causing high load CPU usage. The Error from apache log: [core:error] [pid 15166] [...

Application Gateway Error on Rules

I keep getting an error when trying to change the settings on my Application Gateway. I deleted it and created a new Application Gateway in the same resource group, different name. The error is still ...

What would be the good price for this Fujitsu server drive SCSI? [on hold]

I have a question. What would be the good price for this Fujitsu server drive ? http://www.ebay.com/itm/Fujitsu-HDD-CA06708-B40300DL-MBA3300NC-300GB-15K-RPM-U320-80pin-SCA-2-SCSI-/112351029466?hash=...

Permission problems when mounting NFS folder

I've created an NFS Debian server with the following line in the exports file /home/remote 10.255.255.108(rw,sync,no_subtree_check) 10.255.255.101(rw,sync,no_subtree_check,all_squash) The ...

Why can't Docker Swarm Mode pull a Google Container Registry image with a tag other than :latest?

Trying to do a rolling update on a Docker Swarm service from a Google Container Registry image. Image gcr.io/myproject/mynamespace/myimage has 2 tags, v75 and latest. docker service update --image ...

Server Connection Error : IP adress is not available

I use a web app deployed on an apache-like proprietary server to create my building automation system. I match ip settings of server and network interface. But it gives such an error : error And ...

forfiles how to move a directory to another directory

I'm trying to move a directory which certain date parameter to another directory.. This is the command I'm using: FORFILES -p C:\test1\ /S /D -3 /C "cmd /c if @isdir == TRUE move C:\test2\" I want ...

Exchange Admin loses access after name change

As part of a test of new usernames, I change my domain username. It seems to be working, except when I launch the Exchange Management Console (2010). Here's the error I get: The following error ...

Exim: email eximstats -html report

I'm pulling my hair out trying to get work out how to send a html message using exim. To send a normal text message: $ mail -s "Testing" me@mydomain.com 123 CTRL-D That works fine, but how can I ...

Can I access a Windows 2016 server from a 2012 client through a 2012 server? [duplicate]

We have a bunch of thin clients with Server 2012 CALs. These thin clients mostly run RDP to a Windows 2012 server We want to put a SQL Server 2016 install on a Windows 2016 server. These are all ...

Apache Server is not reachable

Let me start by saying I'm not a sys admin but I've been tasked with creating a new apache web server. For now, I'm just trying to install the base package, confirm it's working and communicating on ...

KMS stops working when VT-x+VT-d is enabled

I'm trying to set up an HVM domU, but I ran into a problem. Without VT-x and VT-d enabled in BIOS, Arch (my dom0) boots and works fine. But once I enabled it so I could use HVM, KMS seems to fail. It ...

Move SQL Indexes in bulk

Let me start off by saying I am not a SQL guru, I know just enough to get into trouble with it :) We just migrated a client over from SQL 2008 R2 to SQL 2016 on new hardware and we want to move the ...

Removing Storageclasses from Kubernetes

Can see entries when running kubectl get storageclasses from failed deployments which aren't there by default. How do you remove these? Am using kubectl 1.5.3 and the following YAML was used to ...

Does R710 with PERC H700 auto rebuild single drive in raid 5?

I have a Dell PowerEdge R710 with PERC H700 Integrated BIOS Configuration Utility 2.02-0025.1 I have a raid 5 setup, and recently I noticed one of the hard drives blinking amber/green, which ...

Configure BIND to prefer IPv4 without disabling IPv6

Our office network is internally dual-stack, but the connection to the rest of the Internet is IPv4-only. I've got BIND 9.9 set up on a Linux box to handle DNS resolution. Is there a way to ...

Converting Active Directory dnshostname attribute to FQDN

I am using ldapsearch to retrieve hostnames of virtual machines managed by a certain Active Directory server. The dnshostname attribute comes back in the form hostname.adserver.domain. For instance, ...

Amazon EC2 CentOS Goes Down Every 5-7 Days [duplicate]

I have a strange behavior at one of my EC2 servers. It runs a basic LAMP stack and a Drupal site. The database of the site is small. From my understanding it should not cause any issues. However, ...

How to execute aws ec2 describe-instances for different account

Assuming we have two AWS acounts: Account-A, Account-B and an ec2 instance running on AccountA. aws ec2 describe-instances works as expected for the instance's own account without an ~/.aws/...

Apache proxy rule config under authentication

I need to create a rule in my server that redirect two url traffic to another server just if the user is logged on my system (moodle). I believe what I need is create a proxyPass and a ProxyReverse ...

Will hospital network firewalls usually support UDP so that I can use Twilio Client for a web application to be used inside the hospital network? [on hold]

I'm working on a web application that involves voice, screensharing, and webcam communication using Twilio Client. One of the key target users is going to be people using the application from within ...

Need help creating a report from powershell

I have a list of computer names and I need a report of their OU, their mangedby attribute and their name. I have created a stack with each setting I want but they are not lining up. For 650 computers ...

OpenVPN Server PacketLoss

I have an OpenVPN server (Debian 8) OpenVPN 2.3.14 x86_64-pc-linux-gnu. Today I have realised packet losses. My server is on TCP port 443. Ping statistics for 144.76.41.103: Packets: Sent = 1135, ...

Multi user “group” account with secondary login

So we have an interesting setup and I'm looking for a little bit of help. We have some accounts that multiple people use at any given time, and due to various reason, they cannot logout for extended ...

Two way trust Exchange mailbox creation

We have a two way trust between Domain A and Domain B. They are both Windows Server 2012 R2. Domain A has Exchange 2013 on it for the use of Domain A users. We want to create user mailboxes from ...

Outlook 2016 cant print from one user

I am currently using Outlook 2016. When i receive an email from one specific user I am not able to print their email. The Print page within outlook stays open and does not close as it does normally ...

CentOS 7 - SMTPS on Postfix is not working right

First, I am a CentOS 7 newbie. I am running an email server on CentOS 7, I am currently having issue with setting SMTPS up on postfix. BTW, imap over SSL on port 993 is working fine. Port 465 and ...

Best way to do a MySQL based Reverse Proxy [on hold]

I have one server which will act as the reverse proxy, and it should proxy the request to another server based on the requested domain and a MySQL table containing them. For example, let's say the ...

Large amounts of files over ftp can't be downloaded through ncftpget [on hold]

I need to backup files automatically from my host and the only available method is through ftp. I used to not have problems with ncftp, but I already noticed that the larger is the amount of files to ...

Installing GD Perl module on Ubuntu 16

I'm trying to get the GD.pm Perl module installed on my server. I get this error when trying to install with cpanm: Please install libgd 2.0.28 or higher. I did some research, and people suggest ...

tp-link advanced security settings [on hold]

Im a newbie with the routing world. I have an TP-LINK WR841N v9 I would like to know that should I set in the Advanced Security the; DoS Protection Enable ICMP-FLOOD Attack Filtering Enable UDP-FLOOD ...

ldapserch to exclude disabled users from the user list

I am using FreeIPA for Identity access management, i have to provide an active user list (audit requirement). I am using a ldapsearch but i am getting all the user (active+disabled) in the list. ...

HP Proliant DL385 G6 - won't Post

I have a HP Proliant DL385 G6 that is unable to post. Once the power button is pressed the fans begin to spin up but no video is displayed. The system health monitor turns green. I have tried: ...

Permission difficulties with NFS-mounted /var/spool/mail for dovecot and procmail

My mail server setup worked for years. Recently I've started experiencing the following problem: Mail setup: sendmail+dovecot+procmail Host file server: CentOS 6.8, NFS exports mail directories to......

forfiles move files access denied

I'm using the following script to move files from 1 location to a shared location, and I keep getting access denied. I tried to create a file on the network location with the same user, I can do it ...

sudo: syntax error after running ./stack.sh (devstack)

The issue is coming while installing devstack for openstack. Before running "./stack.sh" sudo was working fine, but after running this is happening:- [root@localhost ~]# sudo sudo: >>> /etc/...

Reboot debian server freeze [on hold]

So I just got a server to take care of. It currently has less than 50Mb of RAM free, swap is full, and I can't kill process to free some RAM so I wanted to reboot it. Problem is none of those methods ...

Securing SSH with key-based authentication - how to “secure” the key itself? [on hold]

At first I would like to ask I am not server administrator nor network administrator on daily basis, so the question may sound silly to some of you. I have few servers (OVH, if that makes any ...

IIS error 1326 when trying to chdir to mapped drive

I'm trying to run a Django app over IIS 8 on Windows Server 2012. When the program tries to change to a directory on the database server, which also has a drive mapped to it, error 1326 occurs, ...

How can I set the storage engine to wiredTiger with the 2.4 config syntax?

I'm currently upgrading my mongodb from 2.4 to 3.x One of the steps is to change the storage engine to wiredTiger. Can I still use the 2.4 syntax in my mongod.conf file or do I need to change ...

ARP request being sent to external IP addresses

I have an Ubuntu 16.04 machine. Here I create a virtual tunnel (tun) interface and make it the default route so that all traffic pass through it. I have a C application listening on this tun interface ...

The computer object associated with the resource could not be updated in domain

After a few hours of unsuccessfull Googling and scouring all over the Internet, I have to go back to my good old friend at StackExchange. My problem is associated with a dissfuctional Microsoft ...
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