How would I go about securing a machine for shell account access?
For my regular servers that only I use, I do the following to keep them secure (from a fresh, minimal Debian squeeze installation): Disable services that aren't necessary Configure iptables to only...
View ArticleMigrating Debian server - easiest way to move MySQL databases?
I've got a debian server that I'll be migrating to new hardware in the next few days. I've done similar migrations in the past, and everything is pretty straightforward except moving Mysql. The past...
View ArticleIs DRBD really necessary using a shared virtual disk in vsphere formatted...
DRBD seems to be only for replication of data, but what if a VMFS in a SAN is already being shared between two VMs, could the right FS handle the simultaneous writes without drbd? submitted by...
View ArticleLarge MySQL DBs
One of the web platforms we recently acquired (that I just finished migrating into our data centers) has a rather large MySQL database backing it. By "rather large", I mean on the order of 70+GiB. All...
View ArticleHow to configure postfix for individual sender quota?
I need to configure postfix to use individual sender quotas, and I can't yet figure out how. The idea is that, depending on the user logged in, he can send X number of mails this day. I'm currently...
View ArticleVMSTAT interpretation.
In the VMSTAT man page I see here it says: "The first report produced gives averages since the last reboot. Addi- tional reports give information on a sampling period of length delay. The process and...
View ArticleHow would you determine if a Linux system has been in use or abandoned?
I have just taken over over hundreds of Virtual servers in a vSphere environment and been asked to clean house an consolidate. It's safe to say that at least 30% of these have not been used and are not...
View ArticleFormula to show actual memory utilization from `sar -r`?
I'm trying to work out the formula to show actual memory usage from sar -r 0:00:02 kbmemfree kbmemused %memused kbbuffers kbcached 0:10:01 79992 24599644 99.68 22840 20401048 %memused is (as expected)...
View ArticleWindows admin close to blagging a Linux admin role - what are the top things...
I've been doing Microsoft based web systems administration for 6 years now, am proficient with windows server, IIS, .net, MSSQL, Vmware, AWS, powershell, HA systems, firewalls, windows...
View ArticleHaving trouble with "sed" syntax.
Hello Admins! I am having a little bit of a problem with my "sed" syntax and I was hoping maybe someone could help me figure out what I am doing wrong. I am still pretty nub with 'sed' and it would...
View ArticleIs there a visual configurator to build an illustration of the devices on a...
submitted by Sailer [link] [5 comments]
View ArticlePostfix, sender quotas
Hi Im trying to get a hold of postfix, and i want to try to set a sent mail limit for sasl auth'ed users. My first thought was using check_policy_service to call a perl script. am i going in the wrong...
View ArticleUnexplainable data loss - disk suddenly empty?
submitted by ohnomydisk [link] [comment]
View ArticleAt my wit's end, lsi sas2008
truly out of diagnostic ideas here, large supermicro chassy with front and rear expander cards. I'm running software raid on ubuntu 10.04 LTS with 2-3 RAID6 arrays that have been performing normally...
View ArticleStarting Httpd with SSL woes...
Hello, I hope I'm in the right place. I have an interesting situation that I hope can be resolved by you fine people, unless I'm in the wrong subreddit. Anyway, I am implementing an Alfresco server...
View ArticleTransferring files via email
I'd like to use email to forward log files from several clients to a central red hat node then strip those log attachments from the emails when they arrive.. Has anyone done this before? There's very...
View Articlelooking for some advice from those who are more experienced
I just got a Debian VPS server and I am trying to build it out to a fully fledged email server. I realized that I should probably document what I am doing as I go along. Does anyone have any advice for...
View ArticleHow to find "recently" modified files? (ramdisk, observium, tempfs)
I'm deploying Observium to monitor gear. YAY. Now, it automatically creates an RRD file for every single thing it finds, and I really don't care about all the access ports. If there's a way to just not...
View Articleload balancing between eight 3g connections usin ip route
Here's what I'm trying to do: Use eight 3g connections and load balance between each connection on a per packet basis Here's what I have so far a. generic load balancer Now I only use 3 of the 3G usb...
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