Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [safety]

20 questions
177
votes
31 answers

How do I prevent accidental rm -rf /*?

I just ran rm -rf /* accidentally, but I meant rm -rf ./* (notice the star after the slash). alias rm='rm -i' and --preserve-root by default didn't save me, so are there any automatic safeguards for this? I wasn't root and cancelled the command…
Valentin Nemcev
  • 1,965
  • 2
  • 13
  • 12
99
votes
2 answers

Smell of rotten eggs in the server room

A week ago I got the following error on my APC Smart-UPS 1000 which I muted. Warning State: Connect battery Load: 55% Batt: 100% Today, I could smell a sort of sulfur/sulphur/rotten egg smell when I came into the office and the UPS is alarming…
Andy Joiner
  • 1,273
  • 1
  • 10
  • 24
52
votes
5 answers

PDU wiring - is this normal (or even safe)?

I removed the side panel of our server rack so I can clean up some of the wiring. Inside I found the PDU was wired like in the picture. Instead of an incoming power cable, there's just 3 uninsulated spade connectors. Is there any reason for wiring…
Grant
  • 17,671
  • 14
  • 69
  • 101
51
votes
7 answers

How to take full ownership of an IP address?

My business is... troublesome. What I do is legal in every country on earth, but some people don't like it, and make it so tough on my poor ISPs that I am forced to go looking for new providers more often than I would like. The only option I know of…
darkAsPitch
  • 1,861
  • 4
  • 25
  • 42
20
votes
5 answers

Is carpet, or another floor covering, appropriate for a server room?

Ive requested the carpet to be removed from my server room, a disaster was almost waiting to happen air con leaked and the carpet UNDER the rack was soaked. (air con unit 0.3 meter from rear of servers) They have asked if we can have some sort of…
user121246
  • 291
  • 1
  • 4
  • 14
17
votes
15 answers

Tool to assist loading servers into a rack?

This three questions have been merged into this one. The following answers might have come from any of them, or might be a generic answer to all of them. Is there any kind of tool to assist in loading an unloading servers? I realized that I lack…
MikeJ
  • 1,381
  • 4
  • 13
  • 24
3
votes
4 answers

Networking - shielded cat 5 cable and mains power

Unsure if this is the correct forum. Anyhow, we have had a network installed, using shielded cat 5 cable. This cable is in the same trunking as the mains power cable. The electrician says this is fine. The network man says its not. Who is…
Graham
2
votes
1 answer

Securing Kubernetes API port

We have a Kubernetes cluster (kube-)sprayed over 4 nodes running CoreOS. Our most important services will run in this Kubernetes environment and we are trying to do everything we can to make it as secure as possible, however we plant to expose the…
barney.balazs
  • 143
  • 4
2
votes
2 answers

Can one SSD replace a pair of mirrored drives?

I have various firewall/router/utility type boxes that do not require much if any storage for their primary purpose other than booting. But I do like to be able to put a more or less standard CentOS/RHEL install on them which takes a few gig. So I…
Tracy Reed
  • 21
  • 1
1
vote
1 answer

How to defense a DDoS powered by end user's browser?

Like what Github.com has just experienced, what if a script provider, such as google ads, google analysis or something similar, add a malicious scripts at the end of their script, and let end users flood into the target? What if he/she forbid the…
simonmysun
  • 113
  • 5
1
vote
1 answer

Safest approach when designing storage server

We are planing cloud solution for our customers and we are really concerned with designing safest storage servers for their files. This storage won't be IO demanding, as it will contain only files which are uploaded by users. Databases will be…
Goran Radulovic
  • 111
  • 2
1
vote
1 answer

Grounding of a server rack on wheels

I have a 42HE 19” server rack which houses a bunch of equipment (UPS, PDU, server, network, ...). It has wheels so it’s easy to move and it stands on a concrete floor. The rack is out of metal and obviously the casings of the equipment are connected…
divB
  • 538
  • 1
  • 6
  • 22
0
votes
1 answer

Credit Card Payment on a HTTPS / SSL site via VPN: is my data safe?

Since the closest Q & A I have found about this topic doesn't quite match the focus I have in mind, I felt that a more precise question could be a helpful point of reference for me and many other users in my same situation. I need to access a…
John Galassi
  • 103
  • 1
0
votes
0 answers

Safety issue of running exe on a server

I'm pretty new to server-side stuff. The difficult situation is that we want to allow an application installed on the server to run python on the server, but the application server installation guide said that "running EXE files creates a…
Penny
  • 111
  • 1
0
votes
2 answers

Will lvm raid0 lose data after linux system crash?

We want to use lvm to build raid0 array using amazon ebs, and we are worrying about the data safety. We have known that we need to halt the vm to backup. But we still want to know what will happen when the vm crash, it does could happen. Will the…
sanigo
  • 103
  • 2
1
2