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Questions tagged [sysadmin]

59 questions
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How to find which processes caused the system slowdowns? To be used after reboot

For the last few days my Ubuntu 16.04 suffers random slowdowns that it prevents the apps from loading and doesn't even allow me to connect via SSH. The only way I can resolve it is by rebooting the server, but once I reboot I don't know what caused…
Juan Martin
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Does Windows Admin Center have a plugin system?

Does the Windows Admin Center support writing plugins? I can't find a lot of information on it, and I was wondering if it had a plugin system that I could write C# .NET applications for. I want to be able to get information about IIS application…
Max Young
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old hardware - certified EOL OS vs. uncertified current OS

If you are a small business and have some old, non-internet-facing servers around, what are the pros and cons for dealing with the OS situation? We have an old server that is used for numerical and other computational stuff, which needs a re-install…
Dohn Joe
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Software that prevents downloads from websites on workstations

I am a SaaS developer who has a popular website that services users in financial institutions. As we have grown i have noted that an increasing number of our end users are having downloads or uploads blocked due to corporate IT policies and / or…
SaaSGuy33
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Office administrative department requesting "admin" namespace

Our system administration (technology) department manages and maintains our servers and internet systems. It uses the admin namespace. An example is admin@example.com . Our company newly formed an administrative (office) department that handles…
block14
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Computer cluster admin: how to limit users running program but permit file transferring

I am managing a small computer cluster with slurm on CentOS 7. I want to discourage users to run programs on login node. This can be achieved by adding user hard cpu 1 to file /etc/security/limits.conf. However, I do not want file transferring…
wdg
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ClientAliveInterval is not closing the idle ssh connection

I have the task to close the idle ssh connection if they are idle for more than 5 minutes. I have tried setting these value on sshd_config TCPKeepAlive no ClientAliveInterval 300 ClientAliveCountMax 0 But nothing seems to work the idle remains…
Noobie
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AntiVirus for AWS Linux 2 EC2

Is there antivirus software recommended to install AWS Linux 2 system?what would you recommend we install for that? In my infra, I'm using the following AWS services:: EC2 (Seoul, Ohio, and Virginia), Load Balancers, Target Groups, SecurityHub,…
samtech 2021
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slow environment with high CPU usage

I'm new to Linux metrics in our test environment we experiment a slowness, after investigation we have found that the disk space used to store backup data is full, but what is wired for me is that the disk i/o is not high at all we are working with…
Hamza AZIZ
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Reverse IP Lookup to Find A Records at IP Address

I want to know if there is a Linux terminal command for getting all the domains associated with an IP address. Or more correctly - find out all the sites hosted on that server IP and/or aall the A records associated with it. I know dig, host and…
RustyFluff
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What is the standard way to install jdk for wildfly on production?

There are options like, install from repo, install from rpm and install from tar/zip/etc archive What are the pros and cons? One con of installing from archive is, you don't get security updates. Is there any important advantage of installing from…
gk_2000
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Dell PowerEdge R630 Server swap

Our pro support with Dell is coming up on expiration for our production Dell PowerEdge R630 servers. Rather than spend approx $20k to renew pro support, our project leads have suggested another solution. They have another set of identical R630…
M.Clark
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Does redhat system admin and engineering certificate (RHCSA) and (RHCE) work for all Unix-like operating systems?

Does redhat system admin and engineering certificate (RHCSA) and (RHCE) work for all Unix-like operating systems? or Can a Redhat Engineer or System admin work for a debian based companies or systems?
Cracker
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OCSInventory handover table and form

I need to make some kind of handover table. Records would look like this: PC , user , action , date; X , Y , return , 10.07; X , Z , hire , 11.07; A , Y , hire , 16.07; etc. Each record would generate handover-form which would be printed and signed…
Pigeonnn
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UnAuthorized use of tc command

I work in a small product company. I am part of team of size 4 that is building a deployment pipeline for our product My company has also hired a freelance devops consultant who helps us in managing our CI/CD platform. This guy has around 15 years…
jack
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