Re: Timezone question

2018-07-17 Thread Cameron Simpson

On 17Jul2018 19:37, Ed Greshko  wrote:

On 07/17/18 19:33, Danny Horne via users wrote:

On 17/07/18 12:05, Cameron Simpson wrote:

What's in the environment? I like "env | sort".

This nailed it, for some reason (don't ask why, I just don't know), but
I placed 'export TZ=UTC' in .bashrc.  Removing this and logging in again
now shows the correct timezone when using 'date'.

Also, check /etc/timezone, normally a symlink to the desired system
default timezone file.


Not sure if this has changed in Fedora 28, but I don't have
/etc/timezone on any of my servers.  I've previously seen it before, as
either a symlink to a file in /usr/share/zoneinfo, or a file from that
directory copied to /etc/timezone.

Not sure if I have a problem in that area or not.


The link is not /etc/timezone but /etc/localtime


Thank you, my error.

Cheers,
Cameron Simpson 
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Re: Timezone question

2018-07-17 Thread Danny Horne via users
On 17/07/18 12:37, Ed Greshko wrote:
> Also, check /etc/timezone, normally a symlink to the desired system
>>> default timezone file.
>>>
>> Not sure if this has changed in Fedora 28, but I don't have
>> /etc/timezone on any of my servers.  I've previously seen it before, as
>> either a symlink to a file in /usr/share/zoneinfo, or a file from that
>> directory copied to /etc/timezone.
>>
>> Not sure if I have a problem in that area or not.
> The link is not /etc/timezone but /etc/localtime
>
Thanks for the clarification Ed, all my servers show /etc/localtime as a
symlink to the correct timezone



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Re: Timezone question

2018-07-17 Thread Ed Greshko
On 07/17/18 19:33, Danny Horne via users wrote:
> On 17/07/18 12:05, Cameron Simpson wrote:
>> What's in the environment? I like "env | sort".
> This nailed it, for some reason (don't ask why, I just don't know), but
> I placed 'export TZ=UTC' in .bashrc.  Removing this and logging in again
> now shows the correct timezone when using 'date'.
>> Also, check /etc/timezone, normally a symlink to the desired system
>> default timezone file.
>>
> Not sure if this has changed in Fedora 28, but I don't have
> /etc/timezone on any of my servers.  I've previously seen it before, as
> either a symlink to a file in /usr/share/zoneinfo, or a file from that
> directory copied to /etc/timezone.
>
> Not sure if I have a problem in that area or not.

The link is not /etc/timezone but /etc/localtime

-- 
Conjecture is just a conclusion based on incomplete information. It isn't a 
fact.



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Re: Timezone question

2018-07-17 Thread Danny Horne via users
On 17/07/18 12:05, Cameron Simpson wrote:
> What's in the environment? I like "env | sort".

This nailed it, for some reason (don't ask why, I just don't know), but
I placed 'export TZ=UTC' in .bashrc.  Removing this and logging in again
now shows the correct timezone when using 'date'.
>
> Also, check /etc/timezone, normally a symlink to the desired system
> default timezone file.
>

Not sure if this has changed in Fedora 28, but I don't have
/etc/timezone on any of my servers.  I've previously seen it before, as
either a symlink to a file in /usr/share/zoneinfo, or a file from that
directory copied to /etc/timezone.

Not sure if I have a problem in that area or not.

Thanks for the reply
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Re: Timezone question

2018-07-17 Thread Cameron Simpson

On 17Jul2018 11:48, Danny Horne  wrote:

I recently changed my Fedora 28 servers from UTC to Europe/London
timezone, so now it's displaying times in BST (British Summer Time). 
Come October this will change to GMT (Greenwich Mean Time).

1)  Will the timezone change automatically (account for the hours
difference)?


It should do. A timezone says that the offset from UTC is this many hours 
during these times and that many hours these other times. The OS workings in 
seconds - all the timezone/localtime stuff is just presentation.



2)  Will rsyslog continue to post log times as BST or will it
automatically change to GMT without having to restart it?


That, OTOH, I don't know. The timezone might be looked up every time a 
timestamp is transcribed. But also, you can override the system default from 
/etc/timezone by specifying your timezone in the environment (so that people 
logged in from different timezones can see things in their own local time in 
listings, and work in their local time).


As such, you may need to restart some services for them to notice the change.  
And it might vary with the service :-(



I've also just discovered a weird problem.  I have three servers all
configured for Europe/London timezone.  Two show times in BST when using
the 'date' command, but one still shows as UTC (see below).

What have I missed?


What's in the environment? I like "env | sort".

Also, check /etc/timezone, normally a symlink to the desired system default 
timezone file.



[root@kepler ~]# date
Tue 17 Jul 11:42:53 BST 2018
[root@kepler ~]#
[root@kepler ~]# timedatectl
  Local time: Tue 2018-07-17 11:42:56 BST
  Universal time: Tue 2018-07-17 10:42:56 UTC
    RTC time: Tue 2018-07-17 10:42:56
   Time zone: Europe/London (BST, +0100)
   System clock synchronized: yes
systemd-timesyncd.service active: yes
 RTC in local TZ: no

[root@hawking log]# date
Tue 17 Jul 10:43:07 UTC 2018
[root@hawking log]#
[root@hawking log]# timedatectl
  Local time: Tue 2018-07-17 11:43:10 BST
  Universal time: Tue 2018-07-17 10:43:10 UTC
    RTC time: Tue 2018-07-17 10:43:10
   Time zone: Europe/London (BST, +0100)
   System clock synchronized: yes
systemd-timesyncd.service active: yes
 RTC in local TZ: no

Thanks for looking


Yeah, I'd suspect the shell environment, since your timedatectl outputs look 
equivalent.


Cheers,
Cameron Simpson 
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