Need a "ceph-whatami" kind of utility that returns the type of ceph node {mon|mgr|mds|rgw|osd}

[nkshirsagar]

It would be nice to have a utility that can run on any node and return what node it is (mon/mgr/mds/osd/rgw)

For a script, it's difficult to be sure what node it is running on. For example, if someone is writing a script that needs to do different things depending on whether it's run on a mon or osd node, for eg., there's no easy way to be sure unless you do a combination of things like check running services, examine /var/lib/ceph/XXX for non empty folders, etc.

So for example the expected behavior would be, when run on a OSD node,
$ceph-whatami
OSD

When run on a mon+mgr node
$ceph-whatami
MON
MGR

When run on a RGW node,
$ceph-whatami
RGW

This would come in handy for any scripts that need to behave differently depending on whether they're running on mon/osd/mgr/rgw/mds ceph nodes.

[KervyN]

Stupid question: wouldn‘t a simple ps aux | grep osd be enough? Mit freundlichen Grüßen - Boris Behrens

…

Am 22.09.2021 um 09:11 schrieb nikhil kshirsagar ***@***.***>:  It would be nice to have a utility that can run on any node and return what node it is (mon/mgr/mds/osd/rgw) For a script, it's difficult to be sure what node it is running on. For example, if someone is writing a script that needs to do different things depending on whether it's run on a mon or osd node, for eg., there's no easy way to be sure unless you do a combination of things like check running services, examine /var/lib/ceph/XXX for non empty folders, etc. So for example the expected behavior would be, when run on a OSD node, $ceph-whatami OSD When run on a mon+mgr node $ceph-whatami MON MGR When run on a RGW node, $ceph-whatami RGW This would come in handy for any scripts that need to behave differently depending on whether they're running on mon/osd/mgr/rgw/mds ceph nodes. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android.

[nkshirsagar]

Well the service may be down or crashed or manually stopped.

…

On Wed, 22 Sep, 2021, 12:53 pm Boris Behrens, ***@***.***> wrote: Stupid question: wouldn‘t a simple ps aux | grep osd be enough? Mit freundlichen Grüßen - Boris Behrens > Am 22.09.2021 um 09:11 schrieb nikhil kshirsagar ***@***.***>: > >  > It would be nice to have a utility that can run on any node and return what node it is (mon/mgr/mds/osd/rgw) > > For a script, it's difficult to be sure what node it is running on. For example, if someone is writing a script that needs to do different things depending on whether it's run on a mon or osd node, for eg., there's no easy way to be sure unless you do a combination of things like check running services, examine /var/lib/ceph/XXX for non empty folders, etc. > > So for example the expected behavior would be, when run on a OSD node, > $ceph-whatami > OSD > > When run on a mon+mgr node > $ceph-whatami > MON > MGR > > When run on a RGW node, > $ceph-whatami > RGW > > This would come in handy for any scripts that need to behave differently depending on whether they're running on mon/osd/mgr/rgw/mds ceph nodes. > > — > You are receiving this because you are subscribed to this thread. > Reply to this email directly, view it on GitHub, or unsubscribe. > Triage notifications on the go with GitHub Mobile for iOS or Android. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#32 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ADNFUF5BADMFH4D3U5GSIKDUDF76VANCNFSM5EQS4QMQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[AntonOks]

a script I have to show CEPH services and the related hosts, is:

#!/bin/env bash

clear
echo "# MONs #"
ceph mon metadata | jq -c '.[].name' | sort -u | sed 's/"//g'

echo "# MGRs #"
ceph mgr metadata | jq -c '.[].name' | sort -u | sed 's/"//g'

echo "# OSDs #"
ceph osd metadata | jq -c '.[].hostname' | sort -u | sed 's/"//g'

echo "# RGWs #"
ceph service dump | awk -F: ' /hostname/ {print $2}' | sed -e 's/"//g' -e 's/,//g' -e "s/ //g" | sort