Server Fault Weekly Newsletter
Server Fault Weekly Newsletter

Top new questions this week:

PowerShell: Get-ADUser Properties with åäö

I'm trying to extract select sets of users with Get-ADUser. The users belong to companies whose names include non-ASCII characters, e.g. "Gåäördet". Unfortunately, we do have to use the company ...

active-directory powershell scripting  
asked by Tanel Rebane 8 votes
answered by Tanel Rebane 4 votes

Cannot add conditional forwarder without root zone

(Disclaimer: I am not a Windows DNS admin. I do have a decent amount of DNS experience under my belt though, and this is not making any sense. I am working closely with the admins responsible for ...

domain-name-system windows-server-2012 bind  
asked by Andrew B 8 votes

Service Pack 1 for Microsoft Office 2013 install fails

Even though the Win7 desktop system does have 2013 products (Visio and Lync), trying to install Service Pack 1 for Microsoft Office 2013 fails with: Service Pack 1 for Microsoft Office 2013 ...

microsoft-office service-pack  
asked by fiat 5 votes
answered by fiat 6 votes

How can I easily locate a specific TCP conversation in two separate (and large) packet captures using wireshark?

Occasionally, I'll need to compare packet captures (usually wireshark or tcpdump) that are collected from both sides of a TCP conversation. Sometimes the two hosts involved are very "chatty" so I'll ...

asked by Mike B 5 votes
answered by davey 3 votes

Multi-datacenter Ansible load balancer template

I am migrating the management of an existing multi-datacenter setup to Ansible, but I am not sure what is the best way to model it, as I am new to it. I have three data centers D1, D2 and D3. In ...

nginx ansible  
asked by Davide 5 votes
answered by yaegashi 1 vote

Are there any security benefits to deploying custom SSH DH groups to client-only systems?

One suggested mitigative strategy against Logjam-related attacks on SSH is to generate custom SSH Diffie-Hellman groups using something like (the below being for OpenSSH) ssh-keygen -G ...

ssh ssh-keys logjam  
asked by Michael Kjörling 5 votes
answered by Michael Hampton 3 votes

Why higher await time for DM multipath device than underlying device?

We have a CentOS 6.4 based server attached to Hitachi HNAS 3080 storage and observed the kernel remount the filesystem in read-only mode: May 16 07:31:03 GNS3-SRV-CMP-001 kernel: [1259725.675814] ...

performance iowait device-mapper  
asked by pdp 4 votes

Greatest hits from previous weeks:

How do you find what process is holding a file open in Windows?

One thing that annoys me no end about Windows is the old sharing violation error. Often you can't identify what's holding it open. Usually it's just an editor or explorer just pointing to a relevant ...

asked by cletus 266 votes
answered by Eddie 251 votes

How to determine if a bash variable is empty?

What is the best way to determine if a variable in bash contains ""? I have heard it recommended that I do if [ "x$variable" = "x" ] Is that the correct way? (there must be something more ...

bash scripting  
asked by Brent 252 votes
answered by duffbeer703 293 votes

Can you answer these?

Nginx subdomain only working sometimes

I have an nginx instance with the following config: server { listen 80; server_name; location / { root /usr/share/nginx/html; index index.html index.htm; ...

nginx subdomain  
asked by Ryan Gill 1 vote

From command prompt store a "!" from a file name in a varible

I have a set of files in a folder with names like test! - 01.avi. I want to make a new folder for each file with the same name and then move the file into that folder. I have everything but how to ...

batch windows-command-prompt  
asked by Pyrotek 1 vote

Can't read ACL on NFS4 share, Solaris 10 client, CentOS 7 server

First off, please excuse me if my question isn't well formed, this is my first post on serverfault :) I have successfully deployed LDAP and Kerberos authentication in a mixed Linux/Windows/Solaris ...

access-control-list centos7 solaris-10 nfs4  
asked by Svetoslav Ilkov Enchev 2 votes
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