Questions tagged [operating-system]

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1answer
23 views

how to copy all chown's and chmod's of files from an remote system to an other system [closed]

i want to copy all files (/var/www/html) from system A (debian) to system B (debian) without loosing all chown and chmod configurations. there are more then 200.000 files in the folder and many of ...
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2answers
34 views

How to remove old kernel on Ubuntu operating system

I am wondering how can I do remove old kernel from Ubuntu operating system. Please refer image screenshot taken. Please advice. Many thanks. list of linux kernel
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0answers
33 views

How to list all unused disc in linux?

# lsblk -l NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT fd0 2:0 1 4K 0 disk sda 8:0 0 10G 0 disk sda1 8:1 0 10G ...
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0answers
75 views

The system detected an exception during the uefi pre -boot environment

i try install the server os multiple times in dell poweredge r720. but the OS cant install. so, decided to set default troubleshoot. but the server said following error. A system restart require. The ...
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2answers
179 views

How to restore an OS disk onto a different, resized Azure VM as its new OS disk?

I am able to create a new virtual machine that's of a larger size than my current one, but I am not able to upgrade or resize an old VM to that larger size even though it's of a pretty similar type. ...
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1answer
196 views

How to activate “Log Off” option in Windows Server 2016?

Recently We are using Windows Server 2016, but there is no option "Log off' like in older version of OS, Only there are "Disconnect", "Shutdown" and "Restart" option. I would like to activate Logoff ...
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0answers
88 views

registry keys are getting imported under HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\WOW6432Node\ on windows server2016

I am trying to import registry keys along with my application installation using powershell. I am using below command to import registry values (which is placed in a file RegFileName) reg import ".\$...
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0answers
17 views

What kind of system should I build on the Google Cloud Platform to run a single python script many times as fast as possible? [duplicate]

I have a python script that generates a video of the Mandelbrot set being "zoomed" into (it also adds music). I want to generate videos at 4k 60fps. My computer is nowhere near powerful enough to ...
0
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0answers
177 views

System Proxy don't works on Mac OS with VPN (pulse secure)

In my office I usually use Pulse Secure VPN (Pulse Secure) and system proxy settings do not work. I configured cntlm local proxy for testing and don't get any request from the system. Only in-app ...
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0answers
35 views

2008 R2 server in place upgrade to server 2012 R2 essentials?

I have less than 5 users, so I'd like to go to an essentials license to get off of 2008 before eol. I see all these docs about moving changing from essentials, but I want to go to an essentials ...
1
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1answer
245 views

Container-Optimized OS - Erro Log everyhour

I have one VM with ContainerOS with the specific configuration: Image: cos-stable-76-12239-60-0 Machine: g1-small (1 vCPUj, 1,7 GB) CPU: Intel Broadwell Every hour this VM log these erros message: ...
1
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1answer
357 views

How to update /etc/os-release

I installed debian buster on a server while it was the debian testing release. Now that buster is the current stable release, I've updated /etc/apt/sources.list and run apt-get update, apt-get ...
0
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2answers
24 views

How to forbid system to look into /usr/local binaries, libraries and includes?

I'm in a hard time trying to compile things with just dependencies within the system original folders. However, there are different versions of libraries and tools installed in /usr/local. G++ is ...
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0answers
16 views

Piping core dump to an unresponsive program

If the /proc/sys/kernel/core_pattern is set to |<prog> %p %s %c and the program is unresponsive i.e. either busy processing an existing core dump or simply hung in uninterruptible sleep writing ...
1
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1answer
430 views

RHEL 7 / Centos 7 Copy package with all depedencies from server A (installed package) to server B (offline)

I have two server,then these servers need to install postgresql10 , server A could install postgresql10 using yum install , but server B has a rule that is not allowed to connect the internet. So I ...
6
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3answers
2k views

How to learn Linux system internals [closed]

Recently I tried to apply for some DevOps Engineering positions, but I got scared about a specific requirement that was present in almost every job description: Experience with Linux internals and ...
-1
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1answer
573 views

Poweredge R410 os installing

Im new here and i have no clue about servers. I recently bought a poweredge R410 with 64gb ram 16 core 2Tb single SAS hd. I downloaded windows server 2012 from microsoft and i failed to install it. ...
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1answer
42 views

Can I specify operating system with a node definition in Puppet?

I want to do something along the lines of: Is this possible with Puppet? If not, what's the best way I can distinguish modules by operating system?
0
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1answer
28 views

Installing operating system from server PC to all the client PC

I am working on the project in which I have decided to install operating system from server PC to all the client PC. I have one windows iso file on the server PC which is shared on the network. This ...
0
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1answer
473 views

How to convert swap partition from RAID1 to RAID0 using mdadm

How to convert linux SWAP memory from RAID1 to RAID0? Start with:2 exact size swap formatted partitions (/dev/sdc5 and /dev/sdd5) on 2 physically separate disks that are used via Software RAID(named ...
3
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2answers
131 views

Multiple instances of the same OS

I am soon teaching a hands-on class for which I need to spin around 20 VMs for each student. It's sort of a lab. I have about 15 students in my class. You can guess how fast this can go out of control....
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1answer
187 views

HP Proliant DL580 G5 Server Initial Setup [closed]

I am a beginner so please bear that in mind if you choose to answer the question. I have a HP Proliant Dl580 G5 with the following specs : 4x Six-Core XEON 2.4GHz E7450 128GB RAM 4x 72GB SAS 15K I ...
1
vote
1answer
44 views

how to view memory used by operating system and web server in hyper v [closed]

I have a situation where i need to view memory and disk space used by operating systems (windows2012r2 and centos) and web servers (IIS(windows2012r2) and apache(centos)), both of them made as a ...
1
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2answers
409 views

AIX SMS Menu + Netapp Multipath cause BOS migration issues

I'm performing an AIX migration from 7.1 to 7.2 using the DVD Iso on a VIOS Virtual Library. At the point the migration starts, it fails with the following message: 0516-1775 varyonvg: Physical ...
1
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1answer
43 views

How to trust/verify cloud server provider accessing your box?

it is generally admitted that a computer can be considered unsecure when someone else than the designated operator has physical access to it. But since hosted servers are remote, in a datacenter, and ...
0
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1answer
99 views

Backup throughput suddenly went down from 1TB per hour to 350GB per hour

Problem: Backup throughput suddenly went down from 1TB+ per hour to 350GB per hour in HPUX server for DB2 database. Backup using Commvault backup software to the media agent via 10G network. ...
2
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1answer
119 views

Is load average affected by lack of memory?

I've read several articles about load average and all explained that the load average is the amount of processes in running/waiting to run state on CPU , so it's actually the CPU's run queue + the ...
1
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0answers
34 views

added a new network interface, lost connectivity

After adding new subnet ip to new interface, the new ip was being used in previous interface em1 like so: ifcfg-em1:3 ... when I moved the IP to ifcfg-em2 and issued the following command ifdown ...
0
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1answer
257 views

Computer Restart because of Automatic Updates in WSUS

I have configured SCCM and WSUS for Automatic Windows updates, Although updates are required,sometimes it cause different issues in computer system. As example After update on few months ago my LQ 300 ...
2
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2answers
2k views

Can I run a newer Windows Server on older hardware?

Can I run a newer Windows Server OS on an old server equipment that is not supported? I want to know because I have a Dell PowerEdge 2900 and I have a full copy of Windows Server 2016 Standard. I want ...
1
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1answer
588 views

Can't disable PXE on HP DL180 G6 and thus not install an OS

I bought a 4 bay version of the HP Proliant DL180 G6 with 2x Intel Xeon L5640 and 16GB of RAM. It also has 2 x 2TB SAS Drives in Raid 1 installed. Additionally I added a SSD which should later have ...
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1answer
4k views

How do I generate a bootable .iso file from a directory?

Currently, I have selected a distribution of Linux that I like a lot and I have downloaded the .iso image which I can simply dd to an USB or CD media, etc... I would like to add some additional data ...
1
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1answer
814 views

rsync command works on Linux, not Mac OS X

I recently migrated from Linux to Mac for my primary machine. I use rsync to update several static websites. Here's the command: rsync -avzu —exclude=.git /Users/[me]/src/[site] [user]@[host]:/home/...
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0answers
33 views

Can Linux be configured to disallow a program from using mlock()?

Can Linux be configured to disallow a program from mlocking memory and/or put a cap on how much it is allowed to mlock?
3
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3answers
8k views

Up-to-date distros supporting 32-bit i586/non-PAE, specifically for ALIX boards (AMD Geode) [closed]

I have several ALIX systems (powered by the AMD Geode LX processor without PAE support) that are still running on Ubuntu 12.04, the last Ubuntu-Release to supports non-PAE kernels (i.e. compiled for ...
0
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1answer
504 views

Reporting units for user and system CPU usage for individual process via collectd

I've been using the collectd:Process Plugin to monitor the per process metrics on a Linux server I'm running. It is just that there are no information about the units for which process use the CPU ...
-2
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2answers
926 views

Unsuccessful clean install on a Macbook Pro Late 2011 [closed]

I've already worked on several Macbooks, reinstalling them, formatting, changing drives, etc. and normally it's a relatively simple process. But I just got a 13" late 2011 Macbook Pro which just won'...
3
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3answers
2k views

How do I unmount one of two devices mounted to the same mount point?

I accidentally left two different devices mounted on /opt: /dev/xvdf on /opt type ext4 (rw,relatime,seclabel,data=ordered) /dev/md0 on /opt type ext4 (rw,relatime,seclabel,stripe=256,data=ordered) ...
0
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2answers
122 views

What gives better performance single proc - 16 core or dual proc - 8 core each? [duplicate]

What gives better performance single proc - 16 core or dual proc - 8 core each? We are considering going for a sing proc server due to increase in license cost. Edit: We plan to use VMWare vsan, It ...
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1answer
1k views

automated change password on linux servers [closed]

Dear friends and colleges Each half year we need to change the password on our redhat Linux servers , we have 8723 servers!!! In our company Is it possible to automate password changing each half ...
0
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1answer
1k views

HP Proliant ML350 G5 Windows Server 2012

We have two types of servers we need to upgrade to Windows Server 2012 64bit HP Proliant DL380 G6 HP Proliant ML350 G5 I think they both have licenses for Windows Server 2008 but they are currently ...
1
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2answers
2k views

Instruct Hetzner installimage to use SSD as primary OS drive

Purchased a dedicated Hetzner server with 2x small SSDs and 2x large HDDs paired with hardware RAID. Running installimage from Rescue OS shows this as config: # Adaptec RAID (LD 0): no name DRIVE1 /...
1
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2answers
3k views

Why am I unable to find the pid of a nano process that has a file being edited by root?

I am trying to edit a file using nano and whenever I open the file for editing it gives me the following message: File /path/to/file is being edited (by root with nano 2.5.3. PID 12345); continue? ...
1
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1answer
54 views

Hibernation mode in Windows

Is it possible to resume the current work session on a computer(Windows) in another computer (Windows) by copying the hiberfil.sys file?
0
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1answer
56 views

Can GPUs be dynamically allocated in a 20 GPU server?

The purpose for this server is deep learning algorithms. What I am planning to do is to assemble a server with 20 GPUs (Nvidia GTX 1080 TIs) and 2 CPUs (Intel Xeon Phis) and then have many users draw ...
0
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4answers
126 views

How can I deploy a Linux OS on a VM skipping the installation steps?

If I have a virtual machine, how can I install on it an operating system skipping the installation steps? In other words, when I choose an operating system to be installed on the VM, I want to use it ...
0
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1answer
245 views

change /etc/group folder location

I'm using docker with ubuntu and I need to mount /etc/group /etc/shadow /etc/gshadow /etc/passwd inside an external volume, in order to avoid the password loosing each time I've to rebuild the ...
1
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2answers
474 views

Debian safe backup of server system drive?

I would like to backup a Debian 9 server system drive, SAFELY, using cron (thus non-GUI solution is wanted) to a remote ISCSI drive through local network. Using EXT4 as system partition format. By "...
2
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2answers
1k views

How to defeat NMAP's TCP/IP fingerprinting method for OS-detection

I want to evade nmap's TCP/IP fingerprinting, which it uses to detect the OS on a machine. I read A practical approach for defeating Nmap OS-Fingerprinting which explains how this can be done. It also ...
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1answer
119 views

Better stream performance when transparent hugepages are on

On rhel 7, when transparent hugepages are activated, I get a better stream benchmark performance than when transparent hugepages are off. Do you have any idea of a kernel parameter (or another thing) ...