Self studying for RHCE, a question about NFSv4
I've tested this with SL 6.0 and CentOS 6.2. If I put say "/home *(rw)" in exports, and start the NFS server, open up JUST tcp 2049 (nothing else), I can mount it over NFS4. I don't have to run rpcbind...
View ArticleProblems bridging networks with Virt-Manager in RHEL/CentOs
~Cross posted from OCN~ Hey all, I'm having a bit (read: massive amounts) of trouble trying to bridge the network between my physical host (CentOs) and my VM (also CentOS) using virt-manager. I...
View ArticleDoes anyone have any protips that will help newer admins? I will start by...
I sometimes have to backup a lot of data from users that move out of the university that I work at. Rsync tends to be very slow and serial at transferring data. I user globus-url-copy from the [Globus...
View ArticleQuestion about using quotas in Linux (Debian)
Hi all, I've got a server that is being used as a temporary file dump for users while we rearrange some other boxes. I'd like to be able to monitor disk space usage on my disk, and set limits for the...
View ArticleQ. Am I doing qos and tc correctly? (x-post to r/networking)
submitted by toss_away_999 [link] [comment]
View Articlemultihomed iptables script generator
Does anyone know a good script generator for creating the initial set of rules for a multihomed server? submitted by efreak2004 [link] [4 comments]
View ArticleHow to break into Linux Administration
This may or may not be the right place, if not I apologize. I'd like to break into Linux Administration and i'm not quite sure where to start. Ruby on Rails and other technologies have always...
View ArticleHow to make a RHEL kiosk that can start a Virtual Box Guest VM?
This is what I want to do but I am not sure how to do it: Machine starts and shows a box with a few options (like a kiosk) They can select a guest VM to use with virtual box. Virtual box runs full...
View Articlesystemd - pid not readable (yet?) after start - multiple services
I've been trying to correct the following on FC16 3.3.x-x.fc16.i686: /var/log/messages: systemd[1]: PID file /var/run/akmodsd.pid not readable (yet?) after start systemd[1]: Unit akmods.service entered...
View Article[Question] Preserving file creation dates during migration to new server
In march I put a new server in the rack and replaced our 5 year old file server, yesterday I got a call from one of the managers asking about file creation dates, nothing on the server shows that it is...
View ArticleClustered KVM setup for Live Migration with gfs2 on CentOS 6
submitted by admica [link] [11 comments]
View Articleiptables command is adding -m for some reason. Help?
Hi all. Going nuts here. I issue the following command from the cli: iptables -t nat -A PREROUTING -p tcp --dport 25 -j DNAT --to x.x.x.x:pp This forwards all traffic heading to port 25 to my external...
View ArticleAntivirus on LAMP servers
We have a "business requirement" for all our linux (ubuntu) servers to be running some form of on-access antivirus plus centralized updating and reporting. So, since we have an Enterprise Sophos...
View ArticleRAID 5 configuration - looking for advice
My home file server has software (mdadm) RAID5. Recently I added a 5th drive to expand the array and immediately noticed a performance slowdown. It's still fast enough to e.g., stream videos, but the...
View Articlesshfs - mount a remote filesystem via SSH
submitted by adminarticles [link] [15 comments]
View Articlenginx error: *513 upstream timed out (110: Connection timed out) while...
My vps recently moved my server to a diff cluster and the localhost changed to 127.0.0.2 so I had to manually change the network interface to 127.0.0.1 but after reboot is goes back to 127.0.0.2 they...
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