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1500 questions
42
votes
14 answers
phpMyAdmin Error - The configuration file now needs a secret passphrase
I keep getting an error "The configuration file now needs a secret passphrase" after installation of phpmyadmin. I have set the passphrase and also followed the instruction presented on…
jax
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42
votes
6 answers
ssh tunneling only access
Is it possible to configure ssh (on linux) to allow access for tunneling only? Ie user can setup tunnels but cannot get a shell/access files?
Second
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42
votes
2 answers
Nginx: location regex for multiple paths
I have two locations in nginx config that work:
location ^~ /media/ {
proxy_pass http://backend.example.com;
}
location ^~ /static/ {
proxy_pass http://backend.example.com;
}
How can I combine these two into one location?
What I have done…
Vlad T.
- 545
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42
votes
5 answers
AWS ELB Apache2 503 Service Unavailable: Back-end server is at capacity
We've been running a couple websites off Amazons AWS infrastructure for about two years now and as of about two days ago the webserver started to go down once or twice a day with the only error I can find being:
HTTP/1.1 503 Service Unavailable:…
JSP
- 533
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42
votes
3 answers
What is the difference between IDRAC, IPMI and ILO?
I sometimes hear my colleagues talking about IDRAC, IPMI and ILO, when restarting a server. It seems that those terms are often misused.
For instance, is there a difference between saying that you connect to IPMI and IDRAC?
If I well-understand,…
Virtuose
- 537
- 1
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42
votes
5 answers
Can TCP and UDP packets be split into pieces?
Can TCP packets arrive to receiver by pieces?
For example, if I send 20 bytes using TCP protocol, can I be 100% sure that I will receive exactly 20 bytes at once, not 10 bytes then another 10 bytes or so?
And the same question for UDP protocol.
I…
iamnp
- 521
- 1
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- 4
42
votes
13 answers
How do you handle "CMD does not support UNC paths as current directories"?
I am attempting to change directories to a file server such as:
cd \\someServer\\someStuff\
However, I get the following error:
CMD does not support UNC paths as
current directories
What are my options to navigate to that directory?
Ray
- 700
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42
votes
13 answers
How to find out details about hardware on the Linux machine?
-i.e - how to get a full list of hardware components in command line (on a machine with no window system)
Thank you.
Evgeny
- 599
- 3
- 10
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42
votes
3 answers
UFW Firewall Rules ordering?
I have the following rules on our server within UFW:
To Action From
-- ------ ----
22 ALLOW 217.22.12.111
22 ALLOW …
dannymcc
- 2,677
- 10
- 46
- 72
42
votes
5 answers
Bandwidth limits for Amazon EC2
I have a micro instance on Amazon EC2 cloud.
Also the instance is small and it has vary low CPU and EAM usage but it
generates a lot of content, so it can be considered like a web server
serving small amount of static files (not of a big size) to…
Artyom
- 754
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- 16
42
votes
6 answers
Does a 500 watt power supply always use 500 watts of electricity?
Does a 500 watt power supply always pull 500 watts? Or does it depend on the load being placed on the computer?
It's a n00b hardware question. I'm trying to figure out how much it costs to run my compuer without buying a meter that actually measures…
Jim
- 1,555
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- 30
42
votes
4 answers
What is the rest of the 127.0.0.0/8 address space used for?
We all know what 127.0.0.1 is used for (loopback).
What are uses cases for the rest of the reserved 127.0.0.0/8 loopback space?
Tom Marthenal
- 2,106
- 7
- 25
- 37
42
votes
3 answers
telnet counterpart for UDP
Is there anything that enables a "telnet-like" functionality for UDP? I know the difference between TCP and UDP, and why telnet itself won't work - but I'm wondering if there is something similar to the telnet client, from the end-user perspective.…
Dexter
- 557
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42
votes
4 answers
Why do mobile networks have high latencies? How can they be reduced?
I'm increasingly seeing mobile networking technologies being used to get internet access in areas where it is otherwise not available.
While mobile networking is usually not yet viable as the primary internet connection, mobile technology looks like…
sleske
- 9,851
- 4
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42
votes
1 answer
mount: unknown filesystem type 'linux_raid_member'
I have Suse Linux 12.1 and
i am trying to mount a single RAID 1 disk, to explore the files in it. However when mounting it:
# mount /dev/sdc1 /mnt/test
mount: unknown filesystem type 'linux_raid_member'
I started reading around and many…
user1092608
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