Re: [PATCH] config: Update sample config with more examples

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Resending to the list. My previous message bounced because of phone
email client silliness.

C.

On Wed, Apr 27, 2011 at 11:53 AM, Colin McCabe <cmccabe@xxxxxxxxxxxxxx> wrote:
> Very good point. I think that default could be changed (with a little care),
> so that log file = "" will work as expected.
>
> I'll take a look in a bit.
>
> C.
>
> On Apr 27, 2011 7:57 AM, "Wido den Hollander" <wido@xxxxxxxxx> wrote:
>> Hi Colin,
>>
>> On Fri, 2011-04-22 at 10:42 -0700, Colin McCabe wrote:
>>> On Fri, Apr 22, 2011 at 3:39 AM, Wido den Hollander <wido@xxxxxxxxx>
>>> wrote:
>>> > Hi,
>>> >
>>> > On Thu, 2011-04-21 at 14:14 -0700, Colin McCabe wrote:
>>> >> Looks good. I would leave out the "log dir" stuff, though. That thing
>>> >> has been deprecated since forever in favor of "log file".
>>> >
>>> > Is it really deprecated? A quick search through the code shows it is
>>> > still there.
>>> >
>>> > DoutStreamBuff shows:
>>> >
>>> > // If conf->log_file was specified, that takes the highest priority
>>> > if (!conf->log_file.empty()) {
>>> > string log_file(normalize_relative(conf->log_file.c_str()));
>>> > if (conf->log_per_instance) {
>>> >
>>> > But why is log_dir still there?
>>> >
>>> > But you're right, for regular logging log file should be used. Still,
>>> > why is log dir still there?
>>>
>>> Mainly because of a desire not to break old configuration files. At
>>> some point we should try to get rid of it, though. Maybe the first
>>> step is to have a phase where we issue a warning about it.
>>>
>>
>> The "log dir" is still a bit of a pain when you want to fully disable
>> logging to a file. Although 'log dir' is deprecated, this won't work:
>>
>> [global]
>> log to syslog = true
>> log file =
>>
>> This will result in a fallback to 'log dir' and would keep logging to
>> files enabled.
>>
>> My first patch was correct in that case, if you want to turn of logging
>> to files, you have to set both to NULL.
>>
>> Wido
>>
>>> sincerely,
>>> Colin
>>>
>>>
>>> >
>>> >>
>>> >> cheers,
>>> >> Colin
>>> >>
>>> >>
>>> >> On Thu, Apr 21, 2011 at 1:07 PM, Wido den Hollander <wido@xxxxxxxxx>
>>> >> wrote:
>>> >> >
>>> >> > Signed-off-by: Wido den Hollander <wido@xxxxxxxxx>
>>> >> > ---
>>> >> > src/sample.ceph.conf | 77
>>> >> > ++++++++++++++++++++++++++++++++++++++++++--------
>>> >> > 1 files changed, 65 insertions(+), 12 deletions(-)
>>> >> >
>>> >> > diff --git a/src/sample.ceph.conf b/src/sample.ceph.conf
>>> >> > index 473114b..67cb5ae 100644
>>> >> > --- a/src/sample.ceph.conf
>>> >> > +++ b/src/sample.ceph.conf
>>> >> > @@ -10,6 +10,22 @@
>>> >> > ; the current host (e.g., in a setup with a startup.conf on each
>>> >> > ; node).
>>> >> >
>>> >> > +; The variables $type, $id and $name are available to use in paths
>>> >> > +; $type = The type of daemon, possible values: mon, mds and osd
>>> >> > +; $id = The ID of the daemon, for mon.alpha, $id will be alpha
>>> >> > +; $name = $type.$id
>>> >> > +
>>> >> > +; For example:
>>> >> > +; osd.0
>>> >> > +; $type = osd
>>> >> > +; $id = 0
>>> >> > +; $name = osd.0
>>> >> > +
>>> >> > +; mon.beta
>>> >> > +; $type = mon
>>> >> > +; $id = beta
>>> >> > +; $name = mon.beta
>>> >> > +
>>> >> > ; global
>>> >> > [global]
>>> >> > ; enable secure authentication
>>> >> > @@ -18,17 +34,42 @@
>>> >> > ; allow ourselves to open a lot of files
>>> >> > max open files = 131072
>>> >> >
>>> >> > - ; set up logging
>>> >> > - log file = /var/log/ceph/$name.log
>>> >> > + ; You can change the default log location if you want to
>>> >> > + ;log dir = /var/log/ceph
>>> >> > + ;log file = $name.log
>>> >> > +
>>> >> > + ; Logging to syslog is also possible
>>> >> > + ; If you want to disable logging to files, you should empty log
>>> >> > dir and file
>>> >> > + ;log to syslog = true
>>> >> > + ;log dir =
>>> >> > + ;log file =
>>> >> > +
>>> >> > + ; This is the default pid file location
>>> >> > + ;pid file = /var/run/ceph/$name.pid
>>> >> >
>>> >> > - ; set up pid files
>>> >> > - pid file = /var/run/ceph/$name.pid
>>> >> > + ; If you want to run a IPv6 cluster, set this to true. Dual-stack
>>> >> > isn't possible
>>> >> > + ;ms bind ipv6 = true
>>> >> >
>>> >> > ; monitors
>>> >> > ; You need at least one. You need at least three if you want to
>>> >> > ; tolerate any node failures. Always create an odd number.
>>> >> > [mon]
>>> >> > - mon data = /data/mon$id
>>> >> > + mon data = /data/$name
>>> >> > +
>>> >> > + ; If you are using for example the RADOS Gateway and want to have
>>> >> > your newly created
>>> >> > + ; pools a higher replication level, you can set a default
>>> >> > + ;osd pool default size = 3
>>> >> > +
>>> >> > + ; You can also specify a CRUSH rule for new pools
>>> >> > + ; Wiki:
>>> >> > http://ceph.newdream.net/wiki/Custom_data_placement_with_CRUSH
>>> >> > + ;osd pool default crush rule = 0
>>> >> > +
>>> >> > + ; Timing is critical for monitors, but if you want to allow the
>>> >> > clocks to drift a
>>> >> > + ; bit more, you can specify the max drift.
>>> >> > + ;mon clock drift allowed = 1
>>> >> > +
>>> >> > + ; Tell the monitor to backoff from this warning for 30 seconds
>>> >> > + ;mon clock drift warn backoff = 30
>>> >> >
>>> >> > ; logging, for debugging monitor crashes, in order of
>>> >> > ; their likelihood of being helpful :)
>>> >> > @@ -37,15 +78,15 @@
>>> >> > ;debug paxos = 20
>>> >> > ;debug auth = 20
>>> >> >
>>> >> > -[mon.0]
>>> >> > +[mon.alpha]
>>> >> > host = alpha
>>> >> > mon addr = 192.168.0.10:6789
>>> >> >
>>> >> > -[mon.1]
>>> >> > +[mon.beta]
>>> >> > host = beta
>>> >> > mon addr = 192.168.0.11:6789
>>> >> >
>>> >> > -[mon.2]
>>> >> > +[mon.gamma]
>>> >> > host = gamma
>>> >> > mon addr = 192.168.0.12:6789
>>> >> >
>>> >> > @@ -70,17 +111,25 @@
>>> >> > ; Define as many as you like.
>>> >> > [osd]
>>> >> > ; This is where the btrfs volume will be mounted.
>>> >> > - osd data = /data/osd$id
>>> >> > + osd data = /data/$name
>>> >> >
>>> >> > ; Ideally, make this a separate disk or partition. A few
>>> >> > ; hundred MB should be enough; more if you have fast or many
>>> >> > ; disks. You can use a file under the osd data dir if need be
>>> >> > - ; (e.g. /data/osd$id/journal), but it will be slower than a
>>> >> > + ; (e.g. /data/$name/journal), but it will be slower than a
>>> >> > ; separate disk or partition.
>>> >> >
>>> >> > ; This is an example of a file-based journal.
>>> >> > - osd journal = /data/osd$id/journal
>>> >> > - osd journal size = 1000 ; journal size, in megabytes
>>> >> > + osd journal = /data/$name/journal
>>> >> > + ; Journal size, in megabytes
>>> >> > + osd journal size = 1000
>>> >> > +
>>> >> > + ; If you want to run the journal on a tmpfs, disable DirectIO
>>> >> > + ;journal dio = false
>>> >> > +
>>> >> > + ; You can change the number of recovery operations to speed up
>>> >> > recovery
>>> >> > + ; or slow it down if your machines can't handle it
>>> >> > + ;osd recovery max active = 3
>>> >> >
>>> >> > ; osd logging to debug osd issues, in order of likelihood of being
>>> >> > ; helpful
>>> >> > @@ -98,6 +147,10 @@
>>> >> > ; usually fine for basic testing).
>>> >> > btrfs devs = /dev/sdx
>>> >> >
>>> >> > + ; If you want to specify some other mount options, you can do so.
>>> >> > + ; The default values are rw,noatime
>>> >> > + ;btrfs options = rw,noatime
>>> >> > +
>>> >> > [osd.1]
>>> >> > host = epsilon
>>> >> > btrfs devs = /dev/sdy
>>> >> > --
>>> >> > 1.7.0.4
>>> >> >
>>> >> > --
>>> >> > To unsubscribe from this list: send the line "unsubscribe
>>> >> > ceph-devel" in
>>> >> > the body of a message to majordomo@xxxxxxxxxxxxxxx
>>> >> > More majordomo info at http://vger.kernel.org/majordomo-info.html
>>> >> >
>>> >
>>> >
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>>
>>
>
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