RHEL VM (running under KVM) keeps hanging/crashing, but no indicators in...
I'm not really a sysadmin but I've had take on some aspects of this as I'm helping maintain a cluster of VMs we delivered to a subcontractor so that they develop against a production environment....
View ArticleBest way to study for RHCSA?
A few months ago I was studying for the exam, using CentOS on Virtual Box. I ran into some issues when it came into learning Virtualization, GRUB, etc, due to the limitations of running on a VM. I want...
View Articleiptables drop unmatched packets
Is there a way to accept where the rest of the chain is not checked? if my chain has the following rules-p tcp -m tcp --dport 25 -m state --state NEW,ESTABLISHED -j ACCEPT-j DROPall packets to port 25...
View ArticleForward all traffic from eth0 to eth1
Setup: - Server with two interfaces eth0 and eth1 - Running a DNS Server for caching, dns security etc - eth0 connected to the internet - eth1 connected to a routerI want to setup iptables so that all...
View ArticleUbuntu Kickstart
I'm trying to create a kickstart for unattended installations. all works fine, but I'm having problems to run the post scripts. Im trying to install P4V client %post #install p4v mkdir...
View ArticleWhen to use /srv ?
The FHS defines /srv as the following:Site-specific data which are served by the system.For myself I use it for shared content or full web applications that require a proxy or other application to run...
View Article[Postfix] Backscatter (?) problems. Server bouncing all over the place.
Hello everyoneIm having some serious problems with my Postfix setup at the moment. And I cannot figure how to stop it at all. I have been googling and adding fixes to my main.cf for some weeks now and...
View ArticleMake Puppet update my Ubuntuservers and exclude specific packages
I am trying to make Pupet/foreman upate my ubuntu instances and are using this module to update my servers but for an example one of the servers are running Owncloud and i would like to update Owncloud...
View ArticleSSH connection errors with SCOM UNIX agent.
Hi,Hopefully someone here can save me from the nightmare weekend I've had trying to push discover an Ubuntu machine in SCOM. I'll admit I'm not proficient with Linux, but being the only person in my...
View ArticlePrevent photo crunching from slowing website?
I have a client that has a client (hang on:P) that wants a website that will use a script to crop photo's and apply a watermark. Due to the high cpu usage of this taks the request is to place this...
View ArticleWhat is my position in professional Linux world?
I have no degree yet on computer science just have few certificates on basic things like HTML5 and C++. But I have learned many things by myself. Let me list them : 1. Web development - PHP HTML5 CSS...
View ArticleTmux 1.8 Issues on My Linux Boxes
I keep getting tmux issues with tmux. The daemons running inside the tmux session keep running but it seems like tmux crashes.When I run "tmux ls" then I get: "failed to connect to server"I'm running...
View ArticleAuto deploy VM's ESXI
Hello LinuxAdmins. i have a ESXI 6 host running in my homelab with a free license for now. I was wondering if it is possible to setup a VM there could Auto deploy VM's such as Centos/Ubuntu ? submitted...
View ArticleLighttpd not showing symlinked files.
I have a directory that contains both physical and symlinked files from another location. Lighttpd is only showing my physical files. Is there something I am missing or is it not possible to show...
View ArticleSome theory: That Linux tends to be more secure than many other OSes is *not*...
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View ArticleWhat is the best practice permission setup for a multiuser nginx/php-fpm...
Hi FolksI'm running a Gentoo system of less than 10 users.What kind of setup would you recommend in order to:not let user1 view files of user2not let user1 internally view web files of user2let only...
View ArticleMove CentOS 5.11 guest from ESXi 3.5 to Hyper-V 2012
I help out a family friend's company on a consulting basis from time to time, and this time.. it's a fun one. They had some aging Gen 5 HP's, and I'm helping move them to Gen 8's. And some very old ESX...
View ArticlePut in charge of new server setups
Hi everyone.I was recently put in charge of manager all of the new linux servers at my university (employee not student). I've been maintaining all of the old machines but most of them are pretty...
View ArticleGlusterFS part 2...
I posted here a few weeks ago when I was starting my journey with GlusterFS and got some great feedback. I've decided to go with it for our lab and have my Vagrant testing environment completely set up...
View ArticleRancid config - Can't get it to send notifications through Postfix
I am unable to receive notifications, to my company email account, from rancid. Here are the things I have verified: Rancid runs -- logs confirm this cat var/logs/routers.20150826.104713 starting: Wed...
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