Gather GUIDs from applications only with v4.0.0 #55
Description
In order to get a list of the noisy neighbour applications up until now (up until the latest 4.0.0 release ) we were using v3.1.0 and the following command to get the GUIDs of the applications together with the log stats:
cf log-meta --noise --guid --sort-by=rate --source-type=application
After we get the guids we run another CF API call to get the organization and space where the app is running:
cf curl /v3/apps?guids=GUID[i]&include=space,space.organization and the end we show everything as a table.
Now we've installed the latest version of the log-cache cli plugin and we've got an error that the --guid switch can only be used with --source-type=platform. Therefore we've tested with:
cf log-meta --noise --sort-by=rate --guid
and in the output we've found guids and names of the CF's system components like:
b7a4131c-d903-4b96-a317-964e1683eac7 100000 11051395 1m25s 84498 99fb2c5e-6a0c-40a7-ae85-d84d7b4c2da7 100000 1012754700 1m9s 86893 cc 100000 1852851914 1m10s 100949 5173064e-ba3d-4ac5-870d-fc4e5189175e 100000 30521455 3m35s 105759 udp_forwarder 100000 2928951589 56s 109205 c828168b-46d0-485f-9311-c532d2657e26 100000 39282416 3m53s 113781 metrics_discovery_registrar 100000 3228728621 50s 120818 forwarder_agent 100000 3378198414 48s 126431 21f89441-0582-48f5-b4f4-2632d51336ea 100000 65673912 48s 132437 4b38f61e-db0f-4112-af0b-9e9366b6ffe8 100000 1205981622 2m30s 136012 metron 100000 3753111887 43s 140506 prom_scraper 100000 3766084995 43s 140872 830fcabf-c3c8-4e58-8d11-38108aa28d45 100000 2015974692 42s 149169
Are the GUIDs only from running applications? Can we simply run the output through GUID validator to filter out the system components and leave the application guids only?
Is there some other way to get only the guids of the applications?
Best Regards,
Jovan
Activity
cf-gitbot commented on Oct 27, 2020
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chombium commented on Nov 26, 2020
Few more further questions and observations:
Why is the --guid flag only available with --source-type=platform? I personally think that this does not make any sense as
the platform components don't have guids.
The output of the command cf log-meta --noise --guid --sort-by=rate --source-type=platform is like:
In CF, the application names are unique only in a space and to identify an application globally an app guid is needed.
At the moment the command with --source-type=application parameter returns the app names.
The only option to get app guids that I've found up until now is to get the apps and platform data together and then to filter out everything that does not have a guid format.
The command is: cf log-meta --noise --guid --sort-by=rate
From a usability point of view the operators can not do much about the platform logs, so their focus is on observing how the applications behave. With the v4 of the plugin the only way to correctly identify the apps is to get all the log-meta data like in the last example and filter out the platform components.