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Questions tagged [sysadmin]

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Updating lodash to the latest version to resolve a handful of vulnerabilities

I'm attempting to update lodash and have run several commands; npm update -g lodash npm update lodash --force I've ran npm cache clean --force but nothing. Many of the lodash modules are outdated ...
Scivic's user avatar
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229 views

How to configure MFA for WireGuard VPN

I have a WireGuard VPN on linux to create a secure tunnel to my server and clients. I want to add MFA functionality for user connections. I would like require entering a security code when connecting....
fpetit's user avatar
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1 answer
105 views

Is sysprep /shutdown sufficient in this case

In our environment, we manage college computer labs with 30-40 devices each. Our current workflow involves creating a Windows image on a physical machine, sysprepping the image with the /reboot switch,...
v.doro2's user avatar
-1 votes
1 answer
161 views

Automating Account Creation

I’ll try to be brief. The current situation: If we have new hires, the HR will share the names with the IT department to create emails for them and give them access to OSS app (OKTA) that we’re using ...
Sana's user avatar
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1 answer
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Missing rabbitmq.conf file in RabbitMQ installation

I recently installed "RabbitMQ 3.12.10:Erlang 26.2" on a Linux VM. Upon checking the server status using the command [systemctl status rabbitmq-server], the console output logs confirmed ...
eku's user avatar
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265 views

Windows Admin Center RemoteException: The specified module 'CimCmdlets' was not loaded because no valid module file was found in any module directory

I'm setting up Windows Admin Center and have successfully added a few servers. However, I'm encountering an issue when connecting to a server, and the error message I'm receiving is: "...
kevin's user avatar
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105 views

Need php-cgi process to show site URL too?

I have a CentOS 7 server. When I use "top" to view processes I can hit "c" to get the full command. I then see something like this: 17890 do1803 20 0 R 100.0 0.6 0:02.39 /...
Ken Williams's user avatar
2 votes
2 answers
158 views

Lists active network ports and protocols over time

Is there a linux server utility that can list the network ports and protocols that have been active over a given period of time? For example, I'd like to know which ports and protocols were active at ...
Numid's user avatar
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1 answer
50 views

Ubuntu can't communicate between two servers

I have 3 servers: Server #1 runs among other things a MongoDB database Server #2 runs some apps that connect to server #1's mongodb, everything works fine Server #3 is a new server where more apps ...
Julien's user avatar
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1 answer
120 views

How to determine what CVE is back ported to what version of package?

I'm trying to determine what version of apache is backported for CVE-2021-40438. I'm very confused as to how to find out. Our spacewalk server has multiple apache versions of 2.4.37 from -10 to -56 ...
Scivic's user avatar
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1 vote
1 answer
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old hardware - certified EOL OS vs. uncertified current OS [closed]

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 ...
Dohn Joe's user avatar
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840 views

Communication failure between agent and Zabbix Docker server

Currently I have the following scenario: First server: I have the Zabbix components: server, gateway and web interface (along with a mysql database), all running via Docker containers (released port: ...
rhuanpk's user avatar
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1 answer
605 views

Send An E-mail To A GMAIL Address From Linux Mail Command Using Postfix As The MTA

I am a beginner in configuring mail delivery systems. Recently, orders came from the management that we need to send confirmation emails to our clients whenever they complete their applications (I ...
Minmin's user avatar
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1 vote
0 answers
618 views

How to create a non-admin user in OpenBSD to be able to login as a root like in Linux-based systems?

Usually, in Linux-based systems I create new user without admin rights (sudo group). I'm able to login as that user via SSH and then, when I need admin rights, I can just, $ su root ...entering pwd... ...
Emilien Vidal's user avatar
1 vote
1 answer
42 views

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 ...
SaaSGuy33's user avatar
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1 answer
33 views

how can i increase OS FS on CentOS?

we have CentOS server installed on 83GB FS size while the OS disk size is 480gb how can we increase the FS to use the whole disk (sda, 480gb)? [root@server ~]# df -kh Filesystem Size ...
noamsh88's user avatar
1 vote
1 answer
82 views

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 [email protected] . Our company newly formed an ...
block14's user avatar
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2 answers
761 views

How can my team use a single SuperPuTTY session file?

I work in a team that uses SuperPuTTY (on Windows) to connect to remote devices. We currently use our own session files, but not everyone notifies the team when a new device needs to be added/removed ...
M455's user avatar
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1 answer
332 views

How do I allow a device to only connect to certain wifi networks?

I have been assigned to a task that a laptop should be connected to particular wifi Network, i.e Laptop should not connect with any other wifi network other than office wifi. is that possible??? any ...
Kani's user avatar
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1 answer
487 views

How to change the super user after installation in Ubuntu?

I have taken over the system administration on an ubuntu system from someone else. I had an normal user account on this system before, that I am still using. The previous admin made me sudoer, so in ...
hcr's user avatar
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181 views

Ubuntu + Pound 3.0 (load balancer) errors when on port 80

When I start up pound with service it does not log the error in syslog but when I start it with 'pound -d 3' 7F1384113640 thr_http start /build/pound-lNcD5I/pound-3.0/src/http.c:535 7F1384113640 start ...
James Brake's user avatar
1 vote
1 answer
41 views

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/...
wdg's user avatar
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1 vote
0 answers
797 views

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 ...
Noobie's user avatar
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1 vote
1 answer
3k views

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), ...
samtech 2021's user avatar
0 votes
1 answer
164 views

What's the best practice for setting up new servers?

I'm facing the problem that from time to time, when installing a new system, be it virtual machines in VMWare, be it new VDS of the customer's server, I have to constantly install the same packages (...
RoyalGoose's user avatar
5 votes
2 answers
1k views

CentOS: Admin user on xrdp session can't do admin

I'm running a Rocky Linux 8.4 workstation with GNOME and MATE desktops, but I've seen the same problem on CentOS 7.9... When I log into the machine on the local display, I can do things like ...
kbro's user avatar
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0 votes
1 answer
101 views

Migrate from OpenFire to Ejabberd

Can I migrate from OpenFire to Ejabberd with full data(contacts, messages, etc)? I found only one solution for migration: export from OpenFire only contacts.
demon's user avatar
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0 answers
496 views

Squid Proxy with ten of thousands of cache peer

I tried having 20 lines of cache_peer and its working correctly, however when i added ten of thousands of cache_peer, and i cant really connect to it. Any idea why ? My goal is to have hundred or ...
sccccc's user avatar
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1 vote
0 answers
156 views

slow environment with high CPU usage [closed]

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 ...
Hamza AZIZ's user avatar
3 votes
2 answers
430 views

Is there a real point to using "Run as" local admin accounts instead of logging in as a local administrator?

Let's start by setting the scene -- I'm a junior systems administrator tasked with conducting a transition of the company towards a "Least-Privilege" model. This includes removing admin ...
Akala Volo's user avatar
1 vote
2 answers
2k views

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 ...
RustyFluff's user avatar
0 votes
1 answer
1k views

Windows Admin Center Powershell access denied

I'm using the latest version of Windows Admin Center (2103) and when attempting to use the Powershell console within WAC, after supplying my credentials, the connection always fails with the following:...
Ryan DiFrancesco's user avatar
0 votes
2 answers
246 views

Best and simple way to prevent automatic backups filling all disk space in Linux, before it actually happens

Which do you think is the best and most simple way to prevent automatic backups filling all disk space in Linux, before it actually happens? I would like to automatically recycle the oldest ones when ...
fjcobas's user avatar
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2 votes
2 answers
371 views

Should I chose higher CPU/low bandwidth or slightly slower CPU/higher bandwidth?

I have some servers that do a lot of file zipping operations. This also means that all the files have to be remotely downloaded first before being zipped and remotely uploaded, or remotely streamed to ...
Edwinner's user avatar
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1 vote
0 answers
51 views

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 ...
gk_2000's user avatar
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0 votes
1 answer
87 views

How to stop my server from bruteforcing another [duplicate]

There are so many resources on how to stop bruteforce attacks on your server, but I can't find any good on bruteforce attacks FROM a shared hosting server. I am getting a lot of reports from many ...
JoeRoot's user avatar
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-1 votes
1 answer
156 views

With Domain Controller admin access, how can I see which systems users are logged into?

I have a nifty list of users here in my "pumpkin" group. I was hoping it would be easy for me to check who is logged in for several reasons: I don't want to interrupt a user with a prompt......
bluesquare's user avatar
0 votes
1 answer
35 views

How to backup Linode configuration

I have setup LEMP on Ubuntu 18.04 Linode. I have configured all my required settings for my laravel app. Can someone advise how to backup these settings so that I can use the same settings for ...
Codester's user avatar
2 votes
1 answer
817 views

Create a domain GPO with cmd only [closed]

I have a domain controller running Server 2003 and the goal is to create a GPO for the domain without using a GUI program (no gpedit, gpmsc, etc.). How can I achieve this goal by using cmd only? (...
w0rmh013's user avatar
2 votes
1 answer
2k views

ubuntu KVM guest with no network connection after configuring network bridge

I am trying to add KVM guest (Ubuntu 18.04) to local network like other real servers in the network. I configured KVM bridge interface in the host system (Ubuntu 18.04) and it works fine with ...
NoACoder's user avatar
0 votes
0 answers
326 views

Converting bulk Mailboxes in Office365 to Shared Mailbox

It would be practical to as a sysadmin to convert parallelly the mailboxes of more than a user to shared? In the O365 admin console off course.
Jwan's user avatar
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4 votes
2 answers
5k views

Can Windows Admin Center connect to a remote server?

I was thinking that through one Windows Admin Center installation I'll be able to manage several remote Win servers. However, the add server dialog seems to be able to find only local/LAN servers. Is ...
mivra's user avatar
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0 votes
1 answer
2k views

Tomcat running on 8080 port but Fails to redirect to 8443 HTTPS port .. The 8443 port is running but cant access in web

I have deployed webapps with apache-tomcat-8.5.37. It had ssl and was working fine but when I tried to renew the ssl and installed JKS file it started to show different problems. I have resolved ...
Bhuwan Bhandari's user avatar
0 votes
1 answer
147 views

Create installable disk image from existing hard drive

I installed a SLES 15 machine with a special library of my work. Since I need to install other machines with the same procedure, I want to "extract" the current installation to create an installable ...
forgeronvirtuel's user avatar
0 votes
0 answers
41 views

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 ...
M.Clark's user avatar
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1 vote
0 answers
1k views

How to Check for the Java Process Running on All Network Computers?

Due to Oracle's shenanigans, our organization has decided to remove JRE from all computers under our maintenance contract. They've also decided to not replace it with OpenJDK JRE, so I've been tasked ...
DeathNTaxesNTaxes's user avatar
0 votes
1 answer
79 views

Does redhat system admin and engineering certificate (RHCSA) and (RHCE) work for all Unix-like operating systems? [closed]

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's user avatar
  • 13
1 vote
1 answer
440 views

Puppet - disable a user

I'm taking over an old puppet master, and I need to disable a user. I'm aware of "present", "absent", and "role", and they seem to be the only ones available. I've been searching and honestly can't ...
Angus's user avatar
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0 votes
0 answers
31 views

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 ...
Pigeonnn's user avatar
1 vote
1 answer
3k views

Windows server 2016 Administrator account has no permissions

I was changing settings around so that users can only use specific applications; however, I didn't realize that it was going to affect admin rights in the same way. The error I'm receiving is this: ...
Kyle Wilkins's user avatar