# Linux on Servers **URL:** https://community.learnlinux.tv/c/linux-server/7.md?page=2 [Latest](https://community.learnlinux.tv/latest.md) · [Categories](https://community.learnlinux.tv/categories.md) **Page:** 3 --- ## [SSH Keys - unauthorized access](https://community.learnlinux.tv/t/ssh-keys-unauthorized-access/1711)
**Author:** [@Crumpet3820](https://community.learnlinux.tv/u/Crumpet3820)\ **Replies:** 2\ **Last updated:** [July 14, 2022, 3:26am UTC](https://community.learnlinux.tv/t/ssh-keys-unauthorized-access/1711 "2022-07-14T03:26:28Z")
Thanks to Jay’s videos, I started to use SSH keys to access my linux VMs/Servers. One thing however got my attention when adding a public SSH key to a server: Imagine someone finds out what is my username and password.… --- ## [Adding an IP address to an existing interface](https://community.learnlinux.tv/t/adding-an-ip-address-to-an-existing-interface/1687)
**Author:** [@adelaide-Guy](https://community.learnlinux.tv/u/adelaide-Guy)\ **Replies:** 5\ **Last updated:** [July 11, 2022, 8:53pm UTC](https://community.learnlinux.tv/t/adding-an-ip-address-to-an-existing-interface/1687 "2022-07-11T20:53:32Z")
Hi, Everyone. Please help to a problem that I am encountering in my lab environment. I am trying to follow a tutorial where the instructor added an additional IP address to an existing interface. He used nmcli to add th… --- ## [How to cofigure mail notication on cockpit for updates](https://community.learnlinux.tv/t/how-to-cofigure-mail-notication-on-cockpit-for-updates/1649)
**Author:** [@mosher](https://community.learnlinux.tv/u/mosher)\ **Replies:** 0\ **Last updated:** [June 19, 2022, 5:52am UTC](https://community.learnlinux.tv/t/how-to-cofigure-mail-notication-on-cockpit-for-updates/1649 "2022-06-19T05:52:50Z")
I’m looking for a solution to configure a Mail notification on cockpit if a update is available or necessary. The situation when u maintain over 100 servers is confusing. Maybe there is a out of the box solution. What… --- ## [ProxMox Server Build](https://community.learnlinux.tv/t/proxmox-server-build/1615)
**Author:** [@Phisig](https://community.learnlinux.tv/u/Phisig)\ **Replies:** 4\ **Last updated:** [May 27, 2022, 8:15pm UTC](https://community.learnlinux.tv/t/proxmox-server-build/1615 "2022-05-27T20:15:25Z")
Hello all, looking at learning ProxMox. I seen the learning ProxMox video on this page and I was just wondering if anyone else have use Supermicro to build a server? I looking to have 128GE Ram, and 1 card with the 10G… --- ## [New partition size does not show up when running df -h](https://community.learnlinux.tv/t/new-partition-size-does-not-show-up-when-running-df-h/1572)
**Author:** [@adelaide-Guy](https://community.learnlinux.tv/u/adelaide-Guy)\ **Replies:** 1\ **Last updated:** [May 5, 2022, 10:26pm UTC](https://community.learnlinux.tv/t/new-partition-size-does-not-show-up-when-running-df-h/1572 "2022-05-05T22:26:26Z")
Hi, Everyone. I hope you can help me with my problem, I have an ubuntu server 20.04. It is vmguest in xcp-ng. The root partition was originally 20 GB. Since it already used up most of the space I need to increase the ca… --- ## [Configuring OpenLdap](https://community.learnlinux.tv/t/configuring-openldap/1568)
**Author:** [@adelaide-Guy](https://community.learnlinux.tv/u/adelaide-Guy)\ **Replies:** 2\ **Last updated:** [May 3, 2022, 9:55pm UTC](https://community.learnlinux.tv/t/configuring-openldap/1568 "2022-05-03T21:55:37Z")
Hi, Everyone. I am in trying to learn Openldap and following a video tutorial by theurbanpenguin. In his tutorial he created a file called “configure.ldif” in this file he added the following: dn: olcDatabase={2}hdb,cn… --- ## [Virtualization strategies for production](https://community.learnlinux.tv/t/virtualization-strategies-for-production/1412)
**Author:** [@hypoiodous](https://community.learnlinux.tv/u/hypoiodous)\ **Replies:** 31\ **Last updated:** [March 1, 2022, 10:15pm UTC](https://community.learnlinux.tv/t/virtualization-strategies-for-production/1412 "2022-03-01T22:15:00Z")
Hi everyone, I’ve noticed a couple of threads that have gone a little off-topic so I decided to open a new one specifically for the topic of virtualization on production, as I’m really enjoying the conversation and taki… --- ## [Linode, Who's Using It And If So, Why?](https://community.learnlinux.tv/t/linode-whos-using-it-and-if-so-why/1426)
**Author:** [@KI7MT](https://community.learnlinux.tv/u/KI7MT)\ **Replies:** 4\ **Last updated:** [February 26, 2022, 7:24am UTC](https://community.learnlinux.tv/t/linode-whos-using-it-and-if-so-why/1426 "2022-02-26T07:24:45Z")
Hello All, I was wondering what others think of Linode. I’ve had a Linode account for a good while now, mostly just for testings and learning new platforms. Just recently I’ve started looking at their feature set more … --- ## [Mysqldump: \[Warning\] Using a password on the command line interface can be insecure](https://community.learnlinux.tv/t/mysqldump-warning-using-a-password-on-the-command-line-interface-can-be-insecure/245)
**Author:** [@Raymond](https://community.learnlinux.tv/u/Raymond)\ **Replies:** 3\ **Last updated:** [February 22, 2022, 6:18pm UTC](https://community.learnlinux.tv/t/mysqldump-warning-using-a-password-on-the-command-line-interface-can-be-insecure/245 "2022-02-22T18:18:00Z")
Can you do a video on this? How to make a script that back ups the database so just links to a encrypted password some how like in /etc/shadow. So you don’t have to have the database password right in the script. Looked… --- ## [NFS: mapping UID's](https://community.learnlinux.tv/t/nfs-mapping-uids/1393)
**Author:** [@kwsmit](https://community.learnlinux.tv/u/kwsmit)\ **Replies:** 3\ **Last updated:** [February 11, 2022, 2:44am UTC](https://community.learnlinux.tv/t/nfs-mapping-uids/1393 "2022-02-11T02:44:34Z")
Another NFS question. I’m reading Jay’s book Mastering Ubuntu Server en trying to bring knowledge into practice. On my server (ksm-server1, Ubuntu server 20.04) I created two NFS shares. This is my /etc/exports file on … --- ## [Trying to learn source rpms](https://community.learnlinux.tv/t/trying-to-learn-source-rpms/1388)
**Author:** [@adelaide-Guy](https://community.learnlinux.tv/u/adelaide-Guy)\ **Replies:** 6\ **Last updated:** [February 8, 2022, 9:15pm UTC](https://community.learnlinux.tv/t/trying-to-learn-source-rpms/1388 "2022-02-08T21:15:18Z")
Hi, Everryone. I need your expertise, I am trying to learn rpms. I am following an instructional video from pluralsight. Where he download zsh via “yumdownloader --source” in the root directory. As per his instruction … --- ## [NFS: filesystem behaves as readonly when mounted as read-write](https://community.learnlinux.tv/t/nfs-filesystem-behaves-as-readonly-when-mounted-as-read-write/1386)
**Author:** [@kwsmit](https://community.learnlinux.tv/u/kwsmit)\ **Replies:** 0\ **Last updated:** [February 6, 2022, 6:34pm UTC](https://community.learnlinux.tv/t/nfs-filesystem-behaves-as-readonly-when-mounted-as-read-write/1386 "2022-02-06T18:34:18Z")
I’m reading Jay’s book Mastering Ubuntu Server with much pleasure. But I ran into something for which I could use some help or more explanation. It’s about creating an NFS share on a server and accessing it from a clien… --- ## [ZFS problem when attaching extra drive](https://community.learnlinux.tv/t/zfs-problem-when-attaching-extra-drive/1341)
**Author:** [@adb1979](https://community.learnlinux.tv/u/adb1979)\ **Replies:** 8\ **Last updated:** [January 21, 2022, 12:50am UTC](https://community.learnlinux.tv/t/zfs-problem-when-attaching-extra-drive/1341 "2022-01-21T00:50:39Z")
Hello, I have been following through the excellent series of " Ubuntu Server 18.04 Essentials" and learning the terminal commands (although I am running this on the desktop version of Ubuntu 21.10). I have successfully … --- ## [Command-not-found package?](https://community.learnlinux.tv/t/command-not-found-package/1315)
**Author:** [@hypoiodous](https://community.learnlinux.tv/u/hypoiodous)\ **Replies:** 2\ **Last updated:** [January 7, 2022, 6:44pm UTC](https://community.learnlinux.tv/t/command-not-found-package/1315 "2022-01-07T18:44:41Z")
Hi, happy holidays and wish you all a great 2022! While doing a routine maintainance on my VPS (Ubuntu Server 20.04) I saw this package was available for update. The following packages will be upgraded: command-not-f… --- ## [Public Key Authentication getting errors](https://community.learnlinux.tv/t/public-key-authentication-getting-errors/1256)
**Author:** [@adelaide-Guy](https://community.learnlinux.tv/u/adelaide-Guy)\ **Replies:** 23\ **Last updated:** [December 30, 2021, 10:30am UTC](https://community.learnlinux.tv/t/public-key-authentication-getting-errors/1256 "2021-12-30T10:30:41Z")
Hi, Everyone. I am trying to learn Linux and watched both Jay and Andrew Mallet tutorial on how to configure Public Authentication but I am hitting a brick wall with 2 problems. 1. Problem is, although I was successful… --- ## [Patching or spin a new server on cloud](https://community.learnlinux.tv/t/patching-or-spin-a-new-server-on-cloud/1006)
**Author:** [@jegj](https://community.learnlinux.tv/u/jegj)\ **Replies:** 0\ **Last updated:** [October 20, 2021, 1:13pm UTC](https://community.learnlinux.tv/t/patching-or-spin-a-new-server-on-cloud/1006 "2021-10-20T13:13:05Z")
I have to patch my servers, I know that is a golden rule but I have heard comments from friends related to the IT industry, that is much better to spin new servers with updated images and configure/deploy the services ag… --- ## [Ansible Pull via SSH instead of HTTPS?](https://community.learnlinux.tv/t/ansible-pull-via-ssh-instead-of-https/988)
**Author:** [@charles](https://community.learnlinux.tv/u/charles)\ **Replies:** 3\ **Last updated:** [October 15, 2021, 7:58pm UTC](https://community.learnlinux.tv/t/ansible-pull-via-ssh-instead-of-https/988 "2021-10-15T19:58:29Z")
I am watching Jay’s video on Using Ansible to automate your Laptop and Desktop configs! This is really great so far. At ~37:40 Jay issues an ansible pull command and uses the HTTPS url from his GitHub repo. I am foll… --- ## [Pushing System-Wide Vim Configuration Changes Across Multiple VMs/Desktops](https://community.learnlinux.tv/t/pushing-system-wide-vim-configuration-changes-across-multiple-vms-desktops/972)
**Author:** [@GraysonPeddie](https://community.learnlinux.tv/u/GraysonPeddie)\ **Replies:** 2\ **Last updated:** [October 15, 2021, 2:41am UTC](https://community.learnlinux.tv/t/pushing-system-wide-vim-configuration-changes-across-multiple-vms-desktops/972 "2021-10-15T02:41:22Z")
While setting up my Debian Linux container, I needed to make changes to Vim system-wide instead of per-user. So I went ahead and removed everything from /etc/vim/vimrc and add my own settings: set mouse-= I saved and r… --- ## [Methods of Backing Up From Linux Desktop to Linux Server](https://community.learnlinux.tv/t/methods-of-backing-up-from-linux-desktop-to-linux-server/783)
**Author:** [@GraysonPeddie](https://community.learnlinux.tv/u/GraysonPeddie)\ **Replies:** 12\ **Last updated:** [September 26, 2021, 10:02pm UTC](https://community.learnlinux.tv/t/methods-of-backing-up-from-linux-desktop-to-linux-server/783 "2021-09-26T22:02:20Z")
Here’s what I use for performing backups. I use SSH with public key authentication. My file server running in a VM has two hard drives passing into my VM: one for general storage and one for storing movies and music. My… --- ## [Possibilities of Server Backup](https://community.learnlinux.tv/t/possibilities-of-server-backup/900)
**Author:** [@ashwin0811](https://community.learnlinux.tv/u/ashwin0811)\ **Replies:** 0\ **Last updated:** [September 25, 2021, 5:05am UTC](https://community.learnlinux.tv/t/possibilities-of-server-backup/900 "2021-09-25T05:05:40Z")
Hi all, I wish to know what are methods people around here use to back up their Linux servers. I understand Clonezilla is a good option if you have physical access to the server. But let’s say for materializing this dis… --- ## [How does Nginx get the certificates stored on a remote server?](https://community.learnlinux.tv/t/how-does-nginx-get-the-certificates-stored-on-a-remote-server/871)
**Author:** [@cesar](https://community.learnlinux.tv/u/cesar)\ **Replies:** 2\ **Last updated:** [September 17, 2021, 11:27am UTC](https://community.learnlinux.tv/t/how-does-nginx-get-the-certificates-stored-on-a-remote-server/871 "2021-09-17T11:27:35Z")
I have a problem, the reverse proxy server (Nginx Proxy Manager) is located in a private subnet, my reverse proxy does not have Internet to manage the certificates (using Cerbot), the certificates are generated and store… --- ## [SSH not starting at boot](https://community.learnlinux.tv/t/ssh-not-starting-at-boot/805)
**Author:** [@pau](https://community.learnlinux.tv/u/pau)\ **Replies:** 2\ **Last updated:** [September 7, 2021, 3:03pm UTC](https://community.learnlinux.tv/t/ssh-not-starting-at-boot/805 "2021-09-07T15:03:21Z")
Hi everyone, I have a LXC Container in Proxmox VE 7.0-11. The CT Template of the container is: debian-10-standard\_10.7-1\_amd64.tar.gz, so I am using Debian 10. I have a problem with the SSH service, it does not automati… --- ## [Bad luck with CloneZilla and MDADM, please suggest something else](https://community.learnlinux.tv/t/bad-luck-with-clonezilla-and-mdadm-please-suggest-something-else/799)
**Author:** [@KpuCko](https://community.learnlinux.tv/u/KpuCko)\ **Replies:** 0\ **Last updated:** [August 24, 2021, 11:13am UTC](https://community.learnlinux.tv/t/bad-luck-with-clonezilla-and-mdadm-please-suggest-something-else/799 "2021-08-24T11:13:39Z")
Long story short, I have 2 physical servers which I use to run Proxmox. A week ago I saw there is a new stable version of Proxmox VE, so regarding best practices before major upgrade I should have a backup (restorable ba… --- ## [Screenshot on server how?](https://community.learnlinux.tv/t/screenshot-on-server-how/778)
**Author:** [@Raymond](https://community.learnlinux.tv/u/Raymond)\ **Replies:** 4\ **Last updated:** [August 21, 2021, 4:20pm UTC](https://community.learnlinux.tv/t/screenshot-on-server-how/778 "2021-08-21T16:20:52Z")
I just have Ubuntu server and can ssh to it but it also has a keyboard and a screen thought HDMI text only. I can press print screen key but not sure if it saved it any place. Looked on Google and all have the desktop … --- ## [Centos No More?](https://community.learnlinux.tv/t/centos-no-more/120)
**Author:** [@BigBunny](https://community.learnlinux.tv/u/BigBunny)\ **Replies:** 10\ **Last updated:** [July 15, 2021, 12:09pm UTC](https://community.learnlinux.tv/t/centos-no-more/120 "2021-07-15T12:09:19Z")
It looks like IBM wants to financially capitalise on Centos and fed up with it being free. https://blog.centos.org/2020/12/future-is-centos-stream/ --- ## [Www-data group and owner?](https://community.learnlinux.tv/t/www-data-group-and-owner/568)
**Author:** [@MacNala](https://community.learnlinux.tv/u/MacNala)\ **Replies:** 3\ **Last updated:** [June 10, 2021, 8:34pm UTC](https://community.learnlinux.tv/t/www-data-group-and-owner/568 "2021-06-10T20:34:26Z")
I have installed my first Ubuntu 20.04 server in a VM on VirtualBox. I have installed PHP and Apache to get me started creating a website. I am a little baffled about the owner and group set up for the /var/www/html dire… --- ## [Scrolling on Ubuntu Server 20.04](https://community.learnlinux.tv/t/scrolling-on-ubuntu-server-20-04/463)
**Author:** [@brettbyrd](https://community.learnlinux.tv/u/brettbyrd)\ **Replies:** 5\ **Last updated:** [May 5, 2021, 10:27pm UTC](https://community.learnlinux.tv/t/scrolling-on-ubuntu-server-20-04/463 "2021-05-05T22:27:00Z")
I am trying to see permissions on all the files in a directory. However there are too many files to be shown on the screen at one time. I am trying to figure out how to scroll to see more but cannot figure out how to do … --- ## [DHCP App On Raspberry Pi](https://community.learnlinux.tv/t/dhcp-app-on-raspberry-pi/305)
**Author:** [@BigBunny](https://community.learnlinux.tv/u/BigBunny)\ **Replies:** 8\ **Last updated:** [April 27, 2021, 10:11am UTC](https://community.learnlinux.tv/t/dhcp-app-on-raspberry-pi/305 "2021-04-27T10:11:16Z")
I have been using my router for DHCP, but have to add the DNS data manually. I have decided to install a Linux DHCP server with DNS services probably on a Raspberry Pi. (I have run Windows DHCP-DNS in the past.) Why a … --- ## [Raspberry Pi Cluster with ESXi?](https://community.learnlinux.tv/t/raspberry-pi-cluster-with-esxi/401)
**Author:** [@dmkjr](https://community.learnlinux.tv/u/dmkjr)\ **Replies:** 2\ **Last updated:** [April 23, 2021, 3:11am UTC](https://community.learnlinux.tv/t/raspberry-pi-cluster-with-esxi/401 "2021-04-23T03:11:09Z")
Looking to see if anyone has created a RPi cluster and installed ESXi for Arm? Use case: We are attempting to replace an older server that is just used to process backups, encrypted across the network. We believe we can… --- ## [User Permissions for www Directory](https://community.learnlinux.tv/t/user-permissions-for-www-directory/383)
**Author:** [@mowest](https://community.learnlinux.tv/u/mowest)\ **Replies:** 3\ **Last updated:** [April 23, 2021, 2:03am UTC](https://community.learnlinux.tv/t/user-permissions-for-www-directory/383 "2021-04-23T02:03:02Z")
I’m running some static sites on my homelab raspberry pi using Lighttpd for the webserver. I’m wondering what is the best practice for user permissions, I can’t find super clear guidance on how to handle users, groups a… [Previous page](https://community.learnlinux.tv/c/linux-server/7.md?page=1) [Next page](https://community.learnlinux.tv/c/linux-server/7.md?page=3)