Reverse Engineering LDAP configurations on 25 plus Oracle Linux servers
I have been put in charge of a new server farm running OL 6.7, all of which are tied into AD. However, I have no documentation nor access to the previous admin to find out how they did this.I need to...
View ArticleHow does CPU affinity interact with cgroups in Linux?
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View ArticleNeed some Advice: Admin coreutils
I've been giving this a lot of thought recently. I feel as though there are a lot of simple additions that could be made to commands we use everyday that could make our lives infinitely better... Some...
View ArticleConfuse with this filesystem.
[resolved, it's zfs]So normally when we have put hdd on the server. it will show as /dev/sd*, you can part it then mount it later on. But a common occurrence when you do df -kh is something like...
View ArticleHow to Install Graylog 2.0 on CentOS 7 and Collect Windows Logs
submitted by /u/mikefrank3000 [link] [comments]
View Article(Noob Question)Checking Wordpress versions
Hello Linuxadmins! Currently we have around 25 ubuntu servers in our infrastructure and I'm using landscape for an update source for all the machines. However, there are 3rd party apps that landscape...
View Article100% behind cloudflare; Ports are closed; is a DDOS possible?
Hi folks,If a server is 100% behind cloudflare and the ports are closed otherwise through the software firewall, and the IP address is widely known, is a DDOS attack still possible?What can be done to...
View ArticleDomain Join via SSSD fails with Constraint Violation?
I've configured OL 6.7 so that Kerberos and SAMBA are working. My SSSD.conf looks good as well.kinit works.net ads testjoin comes back ok.However, if I attempt to net ads join -U ADMINACCOUNTI get:...
View ArticleAutomatically enable HTTPS on your website with EFF's Certbot, deploying...
submitted by /u/speckz [link] [comments]
View Articlerenaming all the files, directories, content with the matching syntax to...
So basically I want to do %s/<syntax_A>/<syntax_B> equiv to a directory that will recursively look for syntax_A on file names, dir names and content that match syntax_A and replace it by...
View ArticleAutomate Ubuntu clients updates. How?
Hi guys. First time writing here, but I already learned a lot reading from this subreddit ;)At work, I have near 50 Ubuntu desktop clients. It's great to manage the machines as the user doesn't know...
View ArticleManaging SSH Authentication between multiple hosts?
Hey, I'm not sure if this has a clean solution, but I'm willing to ask anyway. I'd love your feedback, as I don't what I should do next.I'm running a couple Debian servers on DigitalOcean as a hobby...
View ArticleEncrypted SSH keys?
I'm looking for people's opinions on whether or not you should always encrypt ssh public/private keys. I know there is ssh-agent out there for those who do encrypt their keys, but i am just curious to...
View Article[Apache] Reverse proxy - tearing my hair out!
So Im trying to access a webpage on my local network from a outside network. And Im doing this by setting up a reverse proxy using Apache. Now site A is working just fine, so I copy that siteA.conf to...
View ArticleWhat would one need to implement different chat services from scratch on a...
Say for example a person is fed up with skype and google, and they're the type of person who enjoys learning things and taking on challenges. Now lets say this person decided they were going to make...
View ArticleSo I just failed the RHCE
Hey all,Just leaving a message here for pity I guess.I just failed the RHCE, I paid for it out of pocket, also in the UK it's a lot more expensive than everywhere else for some reason (£450!).I was...
View ArticleHi r/linux4noobs. I have an interview scheduled for Linux Admin. Just want to...
I do have some hands on experience on Linux for normal stuff like installing, configuring ubuntu, Linux mint in addition to some basic commands. Also, I can configure LAMP easily on my machine. I am a...
View ArticleHow to increase disk size without losing data?
So let's say I have /dev/sda with 100GB. I parted /dev/sda1 for / for 20GB. Now it's full. How can I re-size /dev/sda1 to 40GB while retaining the data?df -khFilesystem Size Used Avail Use% Mounted on...
View Articlehow to logout from smb in windows?
Followed this and everything is working. Got a linux fileserver up. However, after prompting me for user and pw once, I no longer need to type in user and pw and there's no way for me to log out. I...
View ArticleCentOs Install Help
Hey guys! I've decided to take pictures of the entire startup of the CentOsSo, I plug in my usb and chase the bios order to make it boot from the USB first.It then displays this:...
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