NFS4 Stale with UID/GID mapping
Hi guys,I hope you've some more experience with nfs4 and the uid/gid mapping than me.I want to mount a nfs4 Share from our Storage on our RHEL7.2 System. I've installed & configured the idmapper...
View ArticleLVM on RAID 0?
Hi,short question. Do I need LVM on RAID0 configuration? Does it affect disk efficiency? Any pros/cons? Just trying to setup my first home server and this is also my first contact with RAID technology...
View ArticleNFS per host refers
Our office has a Linux NFS server hosting a shared directory. We'd like to give each user access to an additional personal directory on the NFS. Ideally we'd like to be able to filter NFS clients by...
View Articlesudo - possible to specify multiple allowed parameters w/out copying the...
I'm trying to limit a list of arguments which can be passed to a command without creating multiple entries in sudoers file. something like this:sudo /usr/local/bin/apachectl -f /etc/httpd.conf -k...
View ArticleBest tool to monitor bandwidth utilization?
I'm studying for the RHCSA and have run into a bit of a snag. In Windows, you have a tool called Resource Monitor which allows you to see network utilization based on process id. I'm looking for the...
View ArticleWindows sysadmin trying to understand how Linux shops work
Hello, I have been working as a sysadmin for 4 years for a small company (about 100 users, non tech-industry) that mostly runs a Windows environment with maybe the odd LAMP server. I would like to...
View ArticleHelp testing ElastAlert rules
Good evening,I'm setting up ElastAlert as part of a project I'm working on, but when I try to invoke the rule I'm testing, I get the following error http://imgur.com/PiVVrTAI'm not too familiar with...
View Articlegraylog2 - UDP syslog input receiving messages but not visible in show all...
Confirmation I am getting data with UDP syslog listening on 1514 http://imgur.com/a/VjESi - I have another VM which is running rsyslog and pushing messages to the graylog2 server via this doc...
View ArticlePostfix clamav, dovecot, spamassassin help/guidence/tips
After reading some guides... I've successfully configured Postfix as my MTA and Dovecot LDA for my homelab (runlevelone.net), in addition I have Dovecot authenticating users from FreeIPA, Mutt,...
View Articlebind9 track IP's of clients
Is there a way to easily do this? I know named.stats which can provide insight in to the request / response types and such but I want to see if there is an easy way to monitor # of requests / client I...
View ArticleProxmox auto guest provisioning
Hi all,I am practicing for learning and for my RHCSA. I wanted to use proxmox to setup and manage vms as a home lab, so I got all of this set up and I realized that Foreman does not have support for...
View ArticleWhat is the advantage, of compiling the packages from source that that...
Up to know, When I need to install and configure any services, Most of the time I always use package manager, I haven't compiled the source and install it. Now I have a feeling, I should use source...
View ArticleCTDB With Glusterfs Issues
Hey Team,Having an issue with Samba CTDB with Glusterfs. Receiving the following error in /var/log/ctdb/log.ctdb2016/03/22 11:58:25.238975 [10343]: Unable to bind on ctdb socket...
View ArticleBest approach to use SSD with libvirt?
I know this may sound like an odd question, but hear me out. I know it'd be foolish of me to just throw in an SSD and assume that Linux knows what to do with it. I'm seeking the best practice using SSD...
View ArticleHelp with setting up "always on" cluster vm
Hi all,My college has given me access to a vm within a server for my project work. I have installed ArchLinux in the vm. The server runs CentOS 7.I am doing some data mining stuff so i need the vm to...
View ArticleNFS v4 stale file handle issue after server reboot
So I'm at my wits end trying to troubleshoot this issue. I've got an OEL 7.2 server functioning as an NFS sever (by default the shares have been mounted as NFS v4 but I'm correcting this). The server...
View ArticleNot sweet but salty, SUSE Manager 3 Technical Backstage Part I
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View ArticleNeed help with weird cron setup.
Hi!I'm network engineer, so I have limited experience with Linux.I need to run a python script that relies on content in file. I run it every 2 minutes in cron. In order to sync this system with other...
View ArticleFreeipa changing realm domain
Hello,We have now local domain example.local and we will changing it to example2.local. We use external DNS server on our firewalls. So freeIPA was installed to use this external DNS.Is possible to...
View ArticleBuilt a Real Time Linux Resource Monitor, OpenSourced it so you can enjoy and...
So I built A Real Time Linux Resource Monitor with Node.js and Socket.io. It uses Google style gauges to display the data. It currently displays memory n cpu usage using we socketscode at...
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