Recommendations for books on SSL & PKI?
Hello all,At my job, I'm finding that it is (more often) the case that I'm "the guy" when it comes to integrating all of our products together with SSL, since I have a decent working knowledge of how...
View ArticleAnybody else get hit by the y2k15 bug? elasticsearch is dumping new indexes...
Walked in to an empty Kibana screen this morning. It did ok with the 31st but is now putting everything into 2014. This is RHEL 6, with elasticsearch 1.1.2 installed from elasticsearch's repo. Any...
View ArticleWhat sort of rules do people use for IPv6 firewalls?
With IPv4 it's pretty standard to do NAT of some sort and block incoming connections that aren't part of a whitelist, possibly including a range of VPN IPs. For IPv6 does it just come down to...
View ArticleIs there any tool to check S.M.A.R.T status?
That doesn't require other package(s) to be installed?I'm running Debian 7.0 x64 and was going to install smartmontools but I don't want to install any other mail agent. Is it possible? Thanks in...
View Articlecsync2 and lsyncd vs. Gluster for Web files?
My company currently runs several clusters of webservers while using Gluster to replicate the files within each cluster. It works flawlessly with one major exception: our developers really like to...
View ArticleHow to copy large live/active volume to new (larger) volume as seemlessly as...
Soon, I'm going to be moving a 109TB volume over to a, now unused, 200TB volume. Copying it over and then switching the cvlabels to create as little downtime as possible. However, I'm looking for the...
View Article[SHELL-FU] How good are you?
Let's say you have access to a system where there are NO core utilities (atleast no cat, ls, you know, the basic stuff), due to a REALLY restricted shell, or even rm -rf /Do you just cry yourself to...
View ArticleScripted Implementation of Quotas
Hello all,I've been spending my day learning more about working with quotas, and I have a question about the reccommended approach on implementing quotas for users.Even on my home network, I enjoy...
View Article190GB of RAM, how much swap space?
I've recently been tasked with setting up a large machine. It has 192GB of RAM. It will be running scientific applications and I am wondering how much swap space is needed in this situation. I'm a bit...
View ArticleWhat is the oldest distro version or package you have in production? What...
Discovered a RHEL 4 box a client had today and curious about what legacy software we, as Linux Admins, have to deal with on a daily basis for whatever reason. Share your horror stories. submitted by...
View Articlersync; 12+ million files; 20TB data
Hello all,I run a fairly significantly sized HPC cluster with a little more than 800 users. I just recently completed an update from a PanFS based parallel file storage appliance to a GPFS based...
View ArticleI have a class/test next month for RHEL 7 RHCSA. Any study guides available...
I have the opportunity to have a 5 day class and a test for RHEL 7 RHCSA. I am very exited and eager to learn/cram this all into my brain before class starts in February. I know very little Linux right...
View ArticleEmail distribution list server
We have been tasked to deploy an email distribution list server. I have a domain name and mx records. The server is only going to relay email sent to specific addresses. The end users will have...
View ArticleAbsolute beginner linux course for total noob?
I want to get a friend to learn unix commands and basic Linux. Point me to some good resources if you have any. Thanks. submitted by netscape101 [link][10 comments]
View ArticleWhat happens to Ubuntu server?
Hi, I'm a sysadmin for a medium size organization. I already posted in Ubuntu subreddit but I would like to have much more broader point of view of this problem.We use Ubuntu since 10.04 version and...
View Articlehow to restrict access from one ip to another ip address via iptables
I have a router running Tomato custom firmware with multiple clients using it. I have a specific computerA (192.168.1.90) which should only be accessed by another computerB (192.168.1.80). How do I...
View Articlesvn conflict, how do i see timestamps?
So..I have some automated scripts running svn commit (yes yes, i know.. not me who made it, please spare your comments on the fact that its not a good idea).Today i got an email that there was a...
View Article[HELP] Best way to config nginx to handle 25k concurrent users from a former...
Hey all,I've been using Apache for quite some time on various community sites I've built. I've always used Apache and really enjoy the project to the point of doing what I can to support the ASF.Now I...
View ArticleDig command help
Hey guys,Im trying to use dig in a script to return only the A record and currently its not working for me the way i thought it was meant to and i was hoping someone could help me understand why, and...
View ArticleVirtualbox Guest Additions and CentOS 7
Anyone else have any issues installing guest additions on a CentOS 7 client? Anyone overcome those issues?Edit: I was able to run the guest additions script without errors, but it doesn't seem to do...
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