pyroscope with eBPF

[ColdV]

when i use pyroscope with eBPF i get this error: no BTF found for kernel how to fix this error, please help me

[Rperry2174]

hi @ColdV please give us more information about your system as well as your configuration for the grafana agent. have you taken a look at the ebpf example in the examples folder?

[korniltsev]

your kernel is either too old or compiled without CONFIG_DEBUG_INFO_BTF

we will need to add some support for providing custom arbitrary files which can be downloaded https://github.com/aquasecurity/btfhub

[ColdV]

hi @ColdV please give us more information about your system as well as your configuration for the grafana agent. have you taken a look at the ebpf example in the examples folder?

this is my system info: and yes, i looked the ebpf example, and config same as the example. this is my grafana agent config for ebpf:

[ColdV]

your kernel is either too old or compiled without CONFIG_DEBUG_INFO_BTF

we will need to add some support for providing custom arbitrary files which can be downloaded https://github.com/aquasecurity/btfhub

i will try it

[korniltsev]

i will try it

we will need to write some code and update agent before you try

[ColdV]

I have solved the above problem. but i encountered a new problem:

i use ebpf for a C++ program. but encountered this problem when start grafana agent

[ColdV]

i will try it

we will need to write some code and update agent before you try

please, i use Grafana-Agent-Flow to collect C++ program. i see the grafana-agent send these msg to C++ program: and C++ program not process these msg.

and grafana-agent self show these log:

finally i collect c++ program's profiles failed. so, i must process the msg from grafana-agent-flow sent? or what should I do?