Why is my SMTP server my FQDN instead of mail.mydomain?
(CentOS 6.5) Ever since I setup my SMTP server I thought I set it up so it was "mail.mydomain.com" but as of late when I use the "Test config" option on the Roundcubemailinstaller if I put...
View ArticleNeed help configuring 389 with SSSD
So i have a 389 server running and a client with sssd installed on Centos 6.5. I create users and run getent passwd (user). It won't find anything unless i enable them as POSIX user (not sure if that's...
View ArticleLUKs solution and questions about RHCSA exam pedantry. (x-post from /r/redhat/)
Hi all, I thought I should post my solution to a luks setup that I have been having trouble with... and ask some related questions about how the RHCSA exam is handled.simple example setup: make a...
View ArticleLooking for noob friendly guide for installing Grsecurity on Debian?
Can anyone point me in the right direction. All the guides I've seen are hard to follow or Ubuntu specific. submitted by netscape101 [link][3 comments]
View ArticleDHCPD and multiple static routes
Hi,Im struggling a bit getting isc-dhcp-server to send out multiple static routes. If i comment out one of them, it will send out another, so the config seems to be good, but it just wont send out more...
View ArticleReq packages for CLI-only setroubleshoot install.
I'd like to install the setroubleshoot package on some RHEL5/CentOS5 systems but I do not need the GUI stuff. I have no problems specifying the specific packages by hand via Yum/RHN. Can anyone provide...
View ArticleArchitecture for file + email server
I'm looking to set up a small business server for about 20 people. I want to provide:Email (I'm happy setting this up - have done Dovecot, Postfix, Exim)Web (for eg Wiki etc - again fine with this)File...
View Articlescript for updating ~/.ssh/known_hosts -- Need Assistance --
I have a file which is a one per line list of hosts that is supposed to be a complete inventory of what we have in our environment, though I'm sure that some have been missed and some in the list no...
View ArticleWhere to mount logical volumes from a second volume group (centos7)
I have a centos7 system that has a volume group and logical volume(s) on the second bigger/slower disk drive. Idea is to stash the iso images and the qemu-kvm virtual machine images there rather than...
View ArticleWhat are the standards for creating key pairs?
Let's say I have 3 servers that I need access to, and I switch between 3 clients (PC, laptop, phone).The easiest solution would be to make 1 key pair, put the private key on every client and the public...
View ArticleDNS Infra Design
So we are in the process of rebuilding our dns infrastructure to make it more less likely to fail if we lose our datacenter. Right now we have 3 dns servers on the same subnet. We uses split views in...
View ArticleUsing Reverse Proxy
Greetings.I would like embed some videos on my website, they are free and the source offers the embed code for blogs/websites. However there is a geo-gate and only users of the Netherlands can watch...
View ArticleSUSE 11 SP2 not detecting HDs on Dell R630
has anyone encountered this before? I've only found this but its talking about the R620s. I dont have that problem, its only on the newer 630s. Hoping some linux pros here have come across this...
View ArticleAny good open source alternative to sealion?
So I do really like sealion.com but, being a non profit, its not something we care to spend our money on. Does anyone know of any good open source alternatives? submitted by stevo81989 [link][4 comments]
View ArticleUnderstanding linux 'tc' completely and limiting microbursts
So I have a few servers that deal with a lot concurrent IPTV streams over HTTP and because of the way TCP works this generates a lot of microbursts on my switches.The servers are all connected with...
View ArticleWhat to do if your domain registar won't let you transfer the domain name?
I've got a domain name with VPS6.net. Their dns manager doesn't work. So I can't create subdomains. It has been that way since October 2014. They won't answer my tickets to help me create subdomains....
View ArticleMySQL and MariaDB choices on RHEL7/CentOS7
MariaDB 5.5 comes with RHEL7. As we migrate our web applications to RHEL7, I am curious what others are doing. As I see it we have four choices:Use the stock MariaDB 5.5, which is currently called...
View ArticleTrivial newbie problems with LUKS encryption
Hi /r/linuxadmin,Perhaps you can shed some light on these, please:I have to modprobe dm_crypt after every reboot. How do I configure it to happen by itself?LVM encryption confuses me a little. on...
View Articleaccess.redhat should be removed from Google search results the same way...
If you aren't a member of Red Hat's support network, a lot of the time you will search for a problem, only to be locked out of the answer. These Google Search results are useless to us who don't have a...
View ArticleLooking for opinions on bright cluster manager (x-post from r/hpc)
Hello:Our director is asking us to look at bright cluster manager and I was hoping I could get some opinions from people who use the software. What do you think of it? Does it actually make your job...
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