Server Fault Weekly Newsletter - Wednesday, October 29, 2014

Top new questions this week: Linux ssh: allow public-key authentication without giving user read rights to private key Users logged in on my Linux server should be able to ssh to a specific remote machine with a default account. The authentication on the remote machine uses public key, so on the server the ... linux ssh permissions public-key   asked by Philipp 10 votes answered by HBruijn 28 votes Why is DNS returning two different results at random? I changed my nameserver and host company for my domain 30 hours ago. Now, DNS propagation checks indicate that the correct nameserver is recognized worldwide. However, browsers on my own machines ... dns   asked by Joshua Fox 8 votes answered by Markus W Mahlberg 17 votes POST of MTU + ~798 bytes gets lost I have a very weird issue with certain packets not arriving on the destination host. It happens when we transmit a POST that is somewhat larger than the MTU. We can reproduce it with this script: ... networking ip tcp mtu   asked by Halfgaar 5 votes After domain rename - will I need to rejoin all users to the new domain? I am running a Windows Server 2012R2 Domain Server (ADDS). The domain is historically from a 2003 server, and is a single Label Domain: e.g.: Contoso I want to rename it to: Contoso.local (using ... domain windows-server-2012-r2 domain-name rename   asked by Saariko 5 votes answered by Evan Anderson 9 votes Can Puppet File Source be from a web service? Is there a (simple) way to have puppet use a file available on the internet for the Source property of a File? eg: file { "/home/text.txt": source => [ "http://www.example.com/text.txt", ... http puppet puppetmaster puppet-dashboard   asked by gunwin 5 votes answered by ewwhite 3 votes Redhat 7 desktop to workstation I installed a RedHat out of an installation cd, registered my entitlements, all that stuff. As part of my subscriptions I have both Red Hat Enterprise Linux Workstation and Red Hat Enterprise Linux ... yum rhel7   asked by Lorenzo Boccaccia 5 votes answered by ewwhite 3 votes One Unix account for several users on GitHub, how does it work? When we create a repository on GitHub, we can always access it with the address "git@github.com:user/repo" but how does it work behind the scene? ...I mean, there is only one Unix account: "git" ... ssh ssh-keys   asked by hl037_ 5 votes answered by Stanimir Stoyanov 6 votes Greatest hits from previous weeks: 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 203 votes answered by duffbeer703 224 votes What's the best way of handling permissions for apache2's user www-data in /var/www? Has anyone got a nice solution for handling files in /var/www? We're running Name Based Virtual Hosts and the apache2 user is www-data. We've got two regular users & root. So when messing with ... linux apache-2.2 debian file-permissions www-data   asked by gyaresu 146 votes answered by Tom 132 votes Can you answer these? How many MSDTC clustered services (if any) are needed for a multiple-instance SQL Server 2012 cluster? I'm creating a new SQL Server 2012 cluster, running on 2 physical nodes (the O.S. is Windows Server 2012 R2); the cluster will host multiple SQL Server instances; the exact number is yet to be ... sql-server windows-server-2012-r2 failovercluster sql-server-2012 msdtc   asked by Massimo 1 vote Getting "5.7.1 Unable to Relay" intermittently on mails sent to Exchange 2013 I have a helpdesk system that sends mails through the local exchange server. Until a few days ago, I never had issues with it. For the last week we have started getting complaints about missing ... smtp exchange-2013   asked by user2629636 2 votes Strange CPU Loading peaks on web server I have strange, very strange peaks of CPU loading on my website. normal loading about 2-3, when i have this peaks it is about 100-150 peaks may be in any time. not depends my normal loading ... linux nginx php-fpm redis rabbitmq   asked by andreyvlru 2 votes

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