Index
Subject
: [lug] Digest (6 messages)
From
: lug-owner@lists.ncsu.[redacted]
Date
: Wed, 02 Sep 2015 14:51:19 -0400
The Lug Digest
Volume 1 : Issue 351 : "text" Format
Messages in this Issue:
201509/1 : Scheduled Reboot for short and char
Quentin Young <qlyoung@ncsu.[redacted]>
201509/2 : Re: Scheduled Reboot for short and char
Warren Myers <volcimaster@gmail.[redacted]>
201509/3 : Re: Scheduled Reboot for short and char
Quentin Young <qlyoung@ncsu.[redacted]>
201509/4 : Re: Scheduled Reboot for short and char
Warren Myers <volcimaster@gmail.[redacted]>
201509/5 : Re: Scheduled Reboot for short and char
Gary Gatling <gsgatlin@ncsu.[redacted]>
201509/6 : Re: Scheduled Reboot for short and char
Quentin Young <qlyoung@ncsu.[redacted]>
----------------------------------------------------------------------
Date: Tue, 1 Sep 2015 15:48:39 -0400
From: Quentin Young <qlyoung@ncsu.[redacted]>
To: lug@lists.ncsu.[redacted]
Subject: Scheduled Reboot for short and char
Message-ID: <CANhSzx00GPE52TTX=QP2ESHo0M=5Qm96_OeJPn5au2+=kV3eHQ@mail.gmail.[redacted]>
Hi LUGers,
I didn't reboot short and char last night for their scheduled monthly
reboot 'cause I forgot, so that will be happening tonight at approximately
midnight. Please remember to login tomorrow and make sure any services you
run were resurrected.
Best to you!
--
Quentin Young
Vice President, LUG @ NC State
[Attachment of type text/html removed.]
------------------------------
Date: Tue, 1 Sep 2015 15:49:46 -0400
From: Warren Myers <volcimaster@gmail.[redacted]>
To: "lug@lists.ncsu.[redacted]" <lug@lists.ncsu.[redacted]>
Subject: Re: Scheduled Reboot for short and char
Message-ID: <CAP01zHH5hLdby0rV0LdOZu=ZCMrrbsfvPnkKpU+MrW7PuQH7ow@mail.gmail.[redacted]>
ooc - why do they get *monthly* reboots?
On Tue, Sep 1, 2015 at 3:48 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
> Hi LUGers,
>
> I didn't reboot short and char last night for their scheduled monthly
> reboot 'cause I forgot, so that will be happening tonight at approximately
> midnight. Please remember to login tomorrow and make sure any services you
> run were resurrected.
>
> Best to you!
>
> --
> Quentin Young
> Vice President, LUG @ NC State
>
--
*Warren Myers*
http://antipaucity.com
http://twitter.com/warrenmyers
http://www.linkedin.com/in/warrenmyers
https://www.digitalocean.com/?refcode=d197a961987a
TXT WMYERS to 50500 | http://contxts.com
[Attachment of type text/html removed.]
------------------------------
Date: Tue, 1 Sep 2015 15:58:52 -0400
From: Quentin Young <qlyoung@ncsu.[redacted]>
To: lug@lists.ncsu.[redacted]
Subject: Re: Scheduled Reboot for short and char
Message-ID: <CANhSzx0+aGdrUf=+QQ=5xkL5U_eFGAy8miXPEJ77+6szxueqng@mail.gmail.[redacted]>
Long answer:
Even though Linux generally has no problems patching itself after applying
updates without needing a reboot, it's not unthinkable that some unpatched
code might stay in memory and require that the relevant process be killed &
reloaded in order to fully patch. We could track exactly which processes
require this but in lieu of that we just reboot the servers once a month.
Short answer:
Our servers are on the University's grid, and the University sysadmins yell
at us if we go too long without rebooting them.
On Tue, Sep 1, 2015 at 3:49 PM, Warren Myers <volcimaster@gmail.[redacted]> wrote:
> ooc - why do they get *monthly* reboots?
>
> On Tue, Sep 1, 2015 at 3:48 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
>
>> Hi LUGers,
>>
>> I didn't reboot short and char last night for their scheduled monthly
>> reboot 'cause I forgot, so that will be happening tonight at approximately
>> midnight. Please remember to login tomorrow and make sure any services you
>> run were resurrected.
>>
>> Best to you!
>>
>> --
>> Quentin Young
>> Vice President, LUG @ NC State
>>
>
>
>
> --
> *Warren Myers*
> http://antipaucity.com
> http://twitter.com/warrenmyers
> http://www.linkedin.com/in/warrenmyers
> https://www.digitalocean.com/?refcode=d197a961987a
> TXT WMYERS to 50500 | http://contxts.com
>
--
Quentin Young
Vice President, LUG @ NC State
[Attachment of type text/html removed.]
------------------------------
Date: Wed, 2 Sep 2015 14:17:58 -0400
From: Warren Myers <volcimaster@gmail.[redacted]>
To: "lug@lists.ncsu.[redacted]" <lug@lists.ncsu.[redacted]>
Subject: Re: Scheduled Reboot for short and char
Message-ID: <CAP01zHHZod0Loxrw_xGq-n3Y28PJNPGT93iFhrGBV1Lc9CYi_w@mail.gmail.[redacted]>
That is a pretty bizarre policy for the University to take - but, to each
their own :)
On Tue, Sep 1, 2015 at 3:58 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
> Long answer:
> Even though Linux generally has no problems patching itself after applying
> updates without needing a reboot, it's not unthinkable that some unpatched
> code might stay in memory and require that the relevant process be killed &
> reloaded in order to fully patch. We could track exactly which processes
> require this but in lieu of that we just reboot the servers once a month.
>
> Short answer:
> Our servers are on the University's grid, and the University sysadmins
> yell at us if we go too long without rebooting them.
>
> On Tue, Sep 1, 2015 at 3:49 PM, Warren Myers <volcimaster@gmail.[redacted]>
> wrote:
>
>> ooc - why do they get *monthly* reboots?
>>
>> On Tue, Sep 1, 2015 at 3:48 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
>>
>>> Hi LUGers,
>>>
>>> I didn't reboot short and char last night for their scheduled monthly
>>> reboot 'cause I forgot, so that will be happening tonight at approximately
>>> midnight. Please remember to login tomorrow and make sure any services you
>>> run were resurrected.
>>>
>>> Best to you!
>>>
>>> --
>>> Quentin Young
>>> Vice President, LUG @ NC State
>>>
>>
>>
>>
>> --
>> *Warren Myers*
>> http://antipaucity.com
>> http://twitter.com/warrenmyers
>> http://www.linkedin.com/in/warrenmyers
>> https://www.digitalocean.com/?refcode=d197a961987a
>> TXT WMYERS to 50500 | http://contxts.com
>>
>
>
>
> --
> Quentin Young
> Vice President, LUG @ NC State
>
--
*Warren Myers*
http://antipaucity.com
http://twitter.com/warrenmyers
http://www.linkedin.com/in/warrenmyers
https://www.digitalocean.com/?refcode=d197a961987a
TXT WMYERS to 50500 | http://contxts.com
[Attachment of type text/html removed.]
------------------------------
Date: Wed, 2 Sep 2015 14:45:15 -0400
From: Gary Gatling <gsgatlin@ncsu.[redacted]>
To: lug@lists.ncsu.[redacted]
Subject: Re: Scheduled Reboot for short and char
Message-ID: <CAG5Ck-5BYm3C+A5LgfFyj0knVhj+5_jYaDxiMJZYnYhE+DGZ7Q@mail.gmail.[redacted]>
Greetings,
I don't know what operating system short and char are running. But with Red
Hat Enterprise Linux, and fedora, when a new kernel rpm is installed via
yum or dnf, it is not running yet. A reboot into the new kernel via grub is
required to boot into the new kernel. (To change the value of uname -r ) If
you never rebooted, you could be running a insecure kernel the longer you
wait to reboot.
There are tools that try to get around that. See ksplice for example.
https://en.wikipedia.org/wiki/Ksplice
Cheers,
On Wed, Sep 2, 2015 at 2:17 PM, Warren Myers <volcimaster@gmail.[redacted]> wrote:
> That is a pretty bizarre policy for the University to take - but, to each
> their own :)
>
> On Tue, Sep 1, 2015 at 3:58 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
>
>> Long answer:
>> Even though Linux generally has no problems patching itself after
>> applying updates without needing a reboot, it's not unthinkable that some
>> unpatched code might stay in memory and require that the relevant process
>> be killed & reloaded in order to fully patch. We could track exactly which
>> processes require this but in lieu of that we just reboot the servers once
>> a month.
>>
>> Short answer:
>> Our servers are on the University's grid, and the University sysadmins
>> yell at us if we go too long without rebooting them.
>>
>> On Tue, Sep 1, 2015 at 3:49 PM, Warren Myers <volcimaster@gmail.[redacted]>
>> wrote:
>>
>>> ooc - why do they get *monthly* reboots?
>>>
>>> On Tue, Sep 1, 2015 at 3:48 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
>>>
>>>> Hi LUGers,
>>>>
>>>> I didn't reboot short and char last night for their scheduled monthly
>>>> reboot 'cause I forgot, so that will be happening tonight at approximately
>>>> midnight. Please remember to login tomorrow and make sure any services you
>>>> run were resurrected.
>>>>
>>>> Best to you!
>>>>
>>>> --
>>>> Quentin Young
>>>> Vice President, LUG @ NC State
>>>>
>>>
>>>
>>>
>>> --
>>> *Warren Myers*
>>> http://antipaucity.com
>>> http://twitter.com/warrenmyers
>>> http://www.linkedin.com/in/warrenmyers
>>> https://www.digitalocean.com/?refcode=d197a961987a
>>> TXT WMYERS to 50500 | http://contxts.com
>>>
>>
>>
>>
>> --
>> Quentin Young
>> Vice President, LUG @ NC State
>>
>
>
>
> --
> *Warren Myers*
> http://antipaucity.com
> http://twitter.com/warrenmyers
> http://www.linkedin.com/in/warrenmyers
> https://www.digitalocean.com/?refcode=d197a961987a
> TXT WMYERS to 50500 | http://contxts.com
>
[Attachment of type text/html removed.]
------------------------------
Date: Wed, 2 Sep 2015 14:51:11 -0400
From: Quentin Young <qlyoung@ncsu.[redacted]>
To: lug@lists.ncsu.[redacted]
Subject: Re: Scheduled Reboot for short and char
Message-ID: <CANhSzx3HOpMs=qvixsRi7mtswnRtA4F5NKX6iGWWOrnnFFUTJw@mail.gmail.[redacted]>
Yes. The update schedule for security critical issues is "install ASAP",
and for kernel related issues, that entails an immediate reboot as well.
Other kernel updates are taken care of at monthly reboot.
FTR, short runs RHEL 6 and char runs RHEL 7.
On Wed, Sep 2, 2015 at 2:45 PM, Gary Gatling <gsgatlin@ncsu.[redacted]> wrote:
> Greetings,
>
> I don't know what operating system short and char are running. But with
> Red Hat Enterprise Linux, and fedora, when a new kernel rpm is installed
> via yum or dnf, it is not running yet. A reboot into the new kernel via
> grub is required to boot into the new kernel. (To change the value of uname
> -r ) If you never rebooted, you could be running a insecure kernel the
> longer you wait to reboot.
>
> There are tools that try to get around that. See ksplice for example.
>
> https://en.wikipedia.org/wiki/Ksplice
>
> Cheers,
>
>
> On Wed, Sep 2, 2015 at 2:17 PM, Warren Myers <volcimaster@gmail.[redacted]>
> wrote:
>
>> That is a pretty bizarre policy for the University to take - but, to each
>> their own :)
>>
>> On Tue, Sep 1, 2015 at 3:58 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
>>
>>> Long answer:
>>> Even though Linux generally has no problems patching itself after
>>> applying updates without needing a reboot, it's not unthinkable that some
>>> unpatched code might stay in memory and require that the relevant process
>>> be killed & reloaded in order to fully patch. We could track exactly which
>>> processes require this but in lieu of that we just reboot the servers once
>>> a month.
>>>
>>> Short answer:
>>> Our servers are on the University's grid, and the University sysadmins
>>> yell at us if we go too long without rebooting them.
>>>
>>> On Tue, Sep 1, 2015 at 3:49 PM, Warren Myers <volcimaster@gmail.[redacted]>
>>> wrote:
>>>
>>>> ooc - why do they get *monthly* reboots?
>>>>
>>>> On Tue, Sep 1, 2015 at 3:48 PM, Quentin Young <qlyoung@ncsu.[redacted]> wrote:
>>>>
>>>>> Hi LUGers,
>>>>>
>>>>> I didn't reboot short and char last night for their scheduled monthly
>>>>> reboot 'cause I forgot, so that will be happening tonight at approximately
>>>>> midnight. Please remember to login tomorrow and make sure any services you
>>>>> run were resurrected.
>>>>>
>>>>> Best to you!
>>>>>
>>>>> --
>>>>> Quentin Young
>>>>> Vice President, LUG @ NC State
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> *Warren Myers*
>>>> http://antipaucity.com
>>>> http://twitter.com/warrenmyers
>>>> http://www.linkedin.com/in/warrenmyers
>>>> https://www.digitalocean.com/?refcode=d197a961987a
>>>> TXT WMYERS to 50500 | http://contxts.com
>>>>
>>>
>>>
>>>
>>> --
>>> Quentin Young
>>> Vice President, LUG @ NC State
>>>
>>
>>
>>
>> --
>> *Warren Myers*
>> http://antipaucity.com
>> http://twitter.com/warrenmyers
>> http://www.linkedin.com/in/warrenmyers
>> https://www.digitalocean.com/?refcode=d197a961987a
>> TXT WMYERS to 50500 | http://contxts.com
>>
>
>
--
Quentin Young
Vice President, LUG @ NC State
[Attachment of type text/html removed.]
------------------------------
End of [lug] Digest (6 messages)
**********