Re: [CentOS] Boot failures

[techlists]

- Original Message -
From: "Nicolas Thierry-Mieg" 
To: "CentOS mailing list" 
Sent: Friday, February 15, 2013 5:24:11 AM
Subject: Re: [CentOS] Boot failures



Paul Greene wrote:
> Hello All,
>
> I was having some issues with samba configuration and was going to
> remove the packages and reinstall again.
>
> I think I might have rebooted before all of the package removal tasks
> were finished running and might have corrupted something.
>
> The system successfully boots up to the grub menu, but after that the
> boot process stalls when the centos logo comes up. I can't boot into
> single user mode either.
>
> I'd rather not have to re-install the OS. What, if any, options are
> available at this point?
>
> CentOS version is 6.3.
>
> Thanks in advance for any tips.

>>haven't done this in a while, but I suspect in 6.3 you can still boot 
>>from the dvd into rescue mode?

I'm pretty sure I can boot into rescue mode with the CD, but then what? What do 
you do from there?

Sam

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Re: [CentOS] Best Motherboard

[techlists]

What about SuperMicro? 

I've never used one personally, but my employer had some servers built with 
SuperMicro and those things reliably chugged along for years, never had any 
problems.

Paul


 -- Original message --
From: John Plemons <[EMAIL PROTECTED]>
> I would look at Tyan, Soyo, and Intel for middle of the road 
> performance, but more over for dependability...  I have also had very 
> good luck with MSI, Asus...
> 
> john plemons
> 
> 
> 
> 
> 
> 
> 
> Ryan Nichols wrote:
> > Really? We bought that EXACT motherboard.. 10 to be exact and we've 
> > had 9 fail and the 10th is on its way to major failure.. the odd thing 
> > is that 10th one was the first one purchased and that was 6 months ago.
> >
> > On Thu, May 15, 2008 at 7:24 AM, Juan C. Valido 
> > <[EMAIL PROTECTED] > 
> > wrote:
> >
> > Personally, I like Gigabyte motherboards a lot, the GA-P35-DS3L I use
> > with Core 2 Duo (Quad) and DDR2. I though I was going to do better
> > with
> > the Intel DP35DP and guess what, I like the the Gigabyte Better
> > (personally).
> >
> > On Thu, 2008-05-15 at 06:43 -0500, Ryan Nichols wrote:
> > > To all..
> > >
> > > I was using a Gigabyte motherboard, and the board seems like a bad
> > > choice.  What do you guys recommend for a decent server board that
> > > would use a Dual Core processor and DDR2 ram.  I dont want to
> > replace
> > > the CPU and Mem i already have, just find a decent board that
> > > supportsthe existing..
> > >
> > > Thanks,
> > > Ryan Nichols
> > >
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> >
> > 
> >
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> > 
> >
> >
> > No virus found in this incoming message.
> > Checked by AVG. 
> > Version: 8.0.100 / Virus Database: 269.23.16/1433 - Release Date: 5/14/2008 
> 4:44 PM
> >   

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Re: [CentOS] Watching Netflix movies on CentOS

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I doubt you can do it. Besides requiring IE, you also have to download and run 
a Windows based viewer. Even using Windows XP with Firefox, I've never been 
able to get it running without IE.


 -- Original message --
From: Rogelio <[EMAIL PROTECTED]>
> Has anyone here been able to view Netflix movies on CentOS?  (It requires
> Internet Explorer, and I'm wondering what the workaround is for Firefox)


--- Begin Message ---
Has anyone here been able to view Netflix movies on CentOS?  (It requires
Internet Explorer, and I'm wondering what the workaround is for Firefox)
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Re: [CentOS] Slightly OT: How to learn UNIX

[techlists]

I'm a big proponent of self teaching. In the IT field, it's usually hard to get 
an employer to pay for training, so if one isn't willing to self teach, it's 
hard to advance.

Use user reviews on Amazon to get feedback on what books are good for learning 
a specific operating system.

There's no substitute for hands on experience. With Solaris, you can always 
download ISO images and build your own test server on inexpensive x86 hardware. 
I don't know how you'd do that with AIX or HP, though. I've wanted to learn AIX 
myself, but am certainly not going to shell out several thousand bucks to buy a 
used AIX server. 

PG

 -- Original message --
From: Ugo Bellavance <[EMAIL PROTECTED]>
> Hi,
> 
>   I was wondering what would be the best way to learn AIX, Solaris, or 
> HP-UX, for someone who knows Linux very well?  Books?  Courses? 
> Self-teaching in a home lab?
> 
> Thanks,
> 
> Ugo
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Re: [CentOS] General questions about security

[techlists]

CI Security has some good hardening guidelines for Linux based servers. Any 
public facing server should be hardened before deploying it online.

www.cisecurity.org

Paul

 -- Original message --
From: Niki Kovacs <[EMAIL PROTECTED]>
> Hi,
> 
> I admit I never gave security that much thought, that is, except the 
> most basic security rules like choosing good passwords, or reasonable 
> file and directory permissions. But now I have to change that, since 
> I'll soon have to setup a dedicated production server for our public 
> libraries.
> 
> I wonder where to begin. I would say first thing is get a series of 
> "auditing" tools such as, for example, the port scanner nmap, to test 
> the firewall on the server. Any other ideas for that?
> 
> The firewall: CentOS includes a default firewall, where ports can be 
> chosen using a simple graphical (or ncurses) tool. Is that solid enough 
> for a web server? Or do you recommend diving into the innards of 
> iptables? Or maybe, other solution, can you recommend some good 
> "reasonable" set of rules for a web server, for example?
> 
> Last but not least: SELinux. For the moment I don't use it. I read the 
> chapter on SELinux in "Red Hat Enterprise Linux 5 Unleashed" by Tammy 
> Fox, and I simply wonder if it's worth the pain. I'm curious about your 
> opinions about this subject.
> 
> Maybe some good reads on security? That is, articles that don't require 
> you to be a doctor in computer science to get a grasp of the subject? 
> And also documentation that doesn't require me to have a life expectance 
> of 500+ years
> :oD
> 
> Any suggestions?
> 
> Niki
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Re: [CentOS] "find" switch to find files of a certain size?

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I just answered my own question; ignore original post.

 -- Original message --
From: [EMAIL PROTECTED]
> 
> Is there a switch in "find" (or some other command besides find) that'll let 
> you 
> find files larger than a specified size?
> 
> My file system is 88% full and I'd like to see where the biggest space 
> hoggers 
> are.
> 
> PG
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[CentOS] "find" switch to find files of a certain size?

[techlists]

Is there a switch in "find" (or some other command besides find) that'll let 
you find files larger than a specified size?

My file system is 88% full and I'd like to see where the biggest space hoggers 
are.

PG
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Re: [CentOS] How to export X displays

[techlists]

I think you probably went from Linux to Windows, not from Windows to Linux. 
There is an RDP *client* for Linux that works quite well with Windows Remote 
Desktop, but RDP/Terminal Services is completely a Microsoft thing.

Paul

 -- Original message --
From: "umair shakil" <[EMAIL PROTECTED]>
> Salam,
> 
> Well, i have only used RDP as windows to linux (desktop), there should be no
> issue...
> for linux to linux, well x11 forwrding through ssh seems to be issue with
> that not used
> if i try i will let u know
> 
> There is also another way if u can try
> 
> www.nomachine.com and go to download section.
> 
> U can find all details here, how to install, it also has client for ubunto.
> what u will
> do is to install the server, install the client on ur ubunto, and then use
> it... it really very amazing i have used this
> 
> Regards,
> 
> Umair Shakil
> ETD
> 
> On 10/10/07, John R Pierce <[EMAIL PROTECTED]> wrote:
> >
> > umair shakil wrote:
> > > Why dont u enable RDP on centOS (running GUI), and then using ubunto
> > > with this path
> >
> >
> >
> > RDP is a Microsoft Windows Remote Desktop Protocol. what good would
> > that be for linux to linux ??!?
> >
> >
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> >


--- Begin Message ---
Salam,

Well, i have only used RDP as windows to linux (desktop), there should be no
issue...
for linux to linux, well x11 forwrding through ssh seems to be issue with
that not used
if i try i will let u know

There is also another way if u can try

www.nomachine.com and go to download section.

U can find all details here, how to install, it also has client for ubunto.
what u will
do is to install the server, install the client on ur ubunto, and then use
it... it really very amazing i have used this

Regards,

Umair Shakil
ETD

On 10/10/07, John R Pierce <[EMAIL PROTECTED]> wrote:
>
> umair shakil wrote:
> > Why dont u enable RDP on centOS (running GUI), and then using ubunto
> > with this path
>
>
>
> RDP is a Microsoft Windows Remote Desktop Protocol. what good would
> that be for linux to linux ??!?
>
>
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Re: [CentOS] How to export X displays

[techlists]

 -- Original message --
From: John R Pierce <[EMAIL PROTECTED]>
> [EMAIL PROTECTED] wrote:
> >  -- Original message --
> > From: Ow Mun Heng <[EMAIL PROTECTED]>
> >   
> >> n Wed, 2007-10-10 at 02:14 +, [EMAIL PROTECTED] wrote:
> >> 
> >>> I have a CentOS server at home and want to view the X display on a laptop 
> >>>   
> >> running Ubuntu, and not having much success.
> >> 
> >>> Here's what's been tried so far:
> >>>
> >>> I ran this command on the CentOS server:
> >>>
> >>> export DISPLAY=192.168.0.18:0.0 
> >>>   
> >> ssh -X -Y centos
> >>
> >> xclock &
> >> 
> >
> > I tried that and am getting this error message. Just ran an nmap scan on 
> 192.168.0.18 and the X server port doesn't appear to be open. How is that 
> enabled?
> >
> > connect 192.168.0.18 port 6000: Connection refused
> >   
> 
> its tunnneld from localhost via SSH
> 
> you don't mess with setting DISPLAY at all, the ssh -X session should do 
> that for you, DISPLAY will be set to something like...
> 
> $ echo $DISPLAY
> localhost:11.0
> 
> [where the :11 will be different for each ssh session]

Thanks to John, Akemi and Ow. That seems to have worked.

One other question. If a program is already running on the remote machine and 
you want to move the display to the local machine, can that be done? 

i.e. I have Thunderbird already running on the remote machine, and would like 
to move it to the local machine. 

Would that work? Or would it be necessary to kill the remote process and 
re-start it with the tunneled X session?

Thanks,

Paul
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Re: [CentOS] How to export X displays

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 -- Original message --
From: Ow Mun Heng <[EMAIL PROTECTED]>
> n Wed, 2007-10-10 at 02:14 +, [EMAIL PROTECTED] wrote:
> > I have a CentOS server at home and want to view the X display on a laptop 
> running Ubuntu, and not having much success.
> > 
> > Here's what's been tried so far:
> > 
> > I ran this command on the CentOS server:
> > 
> > export DISPLAY=192.168.0.18:0.0 
> 
> 
> ssh -X -Y centos
> 
> xclock &

I tried that and am getting this error message. Just ran an nmap scan on 
192.168.0.18 and the X server port doesn't appear to be open. How is that 
enabled?

connect 192.168.0.18 port 6000: Connection refused

Paul
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[CentOS] How to export X displays

[techlists]

I have a CentOS server at home and want to view the X display on a laptop 
running Ubuntu, and not having much success.

Here's what's been tried so far:

I ran this command on the CentOS server:

export DISPLAY=192.168.0.18:0.0 


And ran this command on the Ubuntu laptop:

xauth +192.168.0.2


When I try to run, say, xclock on the Ubuntu laptop, this is the error message 
I'm getting:

[EMAIL PROTECTED] ~]# xclock
Error: Can't open display: 192.168.0.18:0.0

I'm assuming there's an important little detail I'm missing somewhere, but 
don't know what.

Any suggestions?

Paul
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