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1500 questions
67
votes
4 answers

Drawbacks of mounting a filesystem with noatime?

Having every file be updated just when accessing them sounds like a waste. What's the catch with mounting a file system with the noatime option. What kind of applications/servers relies on the access time?
nos
  • 2,468
67
votes
7 answers

Prevent Windows Server 2012 from forcing a reboot after updates

I have a domain controller with Windows Server 2012 on it. After updates, the server does not reboot immediately. However if I remote into the server I will be presented with a countdown for a reboot. The only options are to restart now or to close…
Bryansix
  • 815
67
votes
2 answers

Why does Heroku warn against "naked" domain names?

I ran across this page in the Heroku docs... Naked domains, also called bare or apex domains, are configured in DNS via A-records and have serious availability implications when used in highly available environments such as massive on-premise…
Agvorth
  • 2,449
67
votes
2 answers

iptables: difference between NEW, ESTABLISHED and RELATED packets

Part of a firewall on a server : iptables -A INPUT -p tcp --dport 22 -m state NEW --state -m recent --set iptables -A INPUT -p tcp --dport 22 -m state --state NEW -m recent --update --seconds 100 --hitcount 10 -j DROP When I search online I always…
Kris
  • 1,387
67
votes
3 answers

crontab running as a specific user

I need to run a script daily. The script should be run as a specific user (ex. user1) not as root. So I put the cron file at /etc/cron.d and put the user name in the line (2nd column). But it gives an error saying that the command is not found. I…
Sam Kong
  • 933
67
votes
19 answers

The perfect server room?

What do I have to consider when I'm planning a new server room for a small company (30 PCs, 5 servers, a couple of switches, routers, UPS...)? What are the most important aspects in order to protect the hardware? What things do not belong in a…
splattne
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67
votes
3 answers

php cli memory limit

I am getting a memory error in a php cron job: Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 71 bytes) in /opt/matrix/core/lib/DAL/DAL.inc on line 830 The applicable parts of the crontab are: $ sudo crontab -u…
Ryan H
  • 1,488
67
votes
9 answers

Deleting All Partitions From the Command Line

How do you delete all partitions on a device from the command line on Linux (specifically Ubuntu)? I tried looking at fdisk, but it presents an interactive prompt. I'm looking for a single command, which I can give a device path (e.g. /dev/sda) and…
Cerin
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67
votes
4 answers

Check OpenSSH version and update instructions on FreeBSD system

On a FreeBSD system (8.1), I am looking for instructions on how to check the running version of OpenSSH and also instructions on the best way to download install an update of OpenSSH
ICTdesk.net
  • 1,183
67
votes
4 answers

Windows equivalent of iptables?

Dumb question: Is there an equivalent of iptables on Windows? Could I install one via cygwin? The real question: how can I accomplish on Windows what I can accomplish via iptables? Just looking for basic firewall functionality (e.g. blocking certain…
Aaron F.
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67
votes
4 answers

Get a list of SQL Server Agent Jobs

I've got an extensive selection of these to add to a spreadsheet and don't want to go through by hand. What it the T-SQL command(s) to generate a list of SQL Server Agent Jobs?
alimack
  • 963
67
votes
7 answers

Apache 2 startup warning: NameVirtualHost *:80 has no VirtualHosts

When my Ubuntu Apache server (Apache 2) starts up I get a warning message that reads: [warn] NameVirtualHost *:80 has no VirtualHosts However, the web server is working fine. What might I have wrong in my site's configuration to make it give me…
Kit Roed
  • 773
67
votes
1 answer

Linux FHS: /srv vs /var ... where do I put stuff?

My web development experience has started with Fedora and RHEL but I'm transitioning to Ubuntu. In Fedora/RHEL, the default seems to be using the /var folder while Ubuntu uses /srv. Is there any reason to use one over the other and where does the…
wag2639
  • 2,165
67
votes
3 answers

Supervisor HTTP Server Port Issue

I have supervisor setup to manage a few processes. It works perfectly fine when I boot my server, however when I stop it and try to start it again it fails and give's me this error msg: * Starting Supervisor daemon manager... Error: Another…
Catalina
66
votes
6 answers

Server wiped after "yum remove python"

A disaster just occurred to me after I ran the command yum remove python and now I can't boot the server up anymore. How it happened: I tried updating some apps via yum on my CentOS 5 VPS and the command was failing due to some weird python 2.4…
tadoman
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