Beyla doesn't work when page size is bigger than 4K

[gouthamve]

See:

goutham@newpi:~/beyla-linux-arm64-v1.8.7$ getconf PAGESIZE
16384

goutham@newpi:~/beyla-linux-arm64-v1.8.7$ BEYLA_PROMETHEUS_PORT=8999 BEYLA_OPEN_PORT=443 BEYLA_EXECUTABLE_NAME=. sudo -E ./beyla
time=2024-11-15T16:38:17.960Z level=INFO msg="Grafana Beyla" Version=v1.8.7 Revision=61514e0 "OpenTelemetry SDK Version"=1.31.0
time=2024-11-15T16:38:18.962Z level=INFO msg="got host ID" component=ContextInfo func=fetchHostID fetcher=local hostID=6d1a1259851d4c42b2c2fb51855b6be0
time=2024-11-15T16:38:18.962Z level=INFO msg="starting Beyla in Application Observability mode"
time=2024-11-15T16:38:18.966Z level=INFO msg="using hostname" component=traces.ReadDecorator function=instance_ID_hostNamePIDDecorator hostname=newpi
time=2024-11-15T16:38:18.967Z level=ERROR msg="Unable to load eBPF watcher for process events" component=discover.ProcessWatcher interval=5s error="loading and assigning BPF objects: field KprobeSysBind: program kprobe_sys_bind: map watch_events: map create: invalid argument (ring map size 4096 not a multiple of page size 16384)"
time=2024-11-15T16:38:18.967Z level=INFO msg="Starting main node" component=beyla.Instrumenter
time=2024-11-15T16:38:18.968Z level=INFO msg="opening prometheus scrape endpoint" component=connector.PrometheusManager port=8999 path=/metrics

This is on a Raspberry Pi 5 with a custom compiled kernel (compiled to make Beyla work).

[gouthamve]

Testing main, I am now running into this:

➜  beyla git:(main) k -n monitoring logs -f k8s-monitoring-beyla-dqkhf
time=2024-11-19T11:48:18.755Z level=INFO msg="Grafana Beyla" Version=main Revision=4fd1d09 "OpenTelemetry SDK Version"=1.28.0
time=2024-11-19T11:48:20.278Z level=INFO msg="got host ID" component=ContextInfo func=fetchHostID fetcher=KubeNode hostID=6d1a1259851d4c42b2c2fb51855b6be0
time=2024-11-19T11:48:20.278Z level=INFO msg="starting Beyla in Network metrics mode"
time=2024-11-19T11:48:20.278Z level=INFO msg="initializing Flows agent" component=agent.Flows
time=2024-11-19T11:48:20.278Z level=INFO msg="starting Beyla in Application Observability mode"
time=2024-11-19T11:48:20.278Z level=INFO msg="using socket filter for collecting network events" component=agent.Flows
time=2024-11-19T11:48:20.427Z level=INFO msg="starting Flows agent" component=agent.Flows
time=2024-11-19T11:48:20.428Z level=INFO msg="interface detected. Registering flow ebpfFetcher" component=agent.Flows interface="{Name:eth0 Index:2}"
time=2024-11-19T11:48:20.480Z level=INFO msg="Flows agent successfully started" component=agent.Flows
time=2024-11-19T11:48:20.480Z level=INFO msg="opening prometheus scrape endpoint" component=connector.PrometheusManager port=9090 path=/internal/metrics
time=2024-11-19T11:48:20.480Z level=INFO msg="using hostname" component=traces.ReadDecorator function=instance_ID_hostNamePIDDecorator hostname=k8s-monitoring-beyla-dqkhf
time=2024-11-19T11:48:20.480Z level=INFO msg="opening prometheus scrape endpoint" component=connector.PrometheusManager port=9090 path=/metrics
time=2024-11-19T11:48:20.481Z level=ERROR msg="Unable to load eBPF watcher for process events" component=discover.ProcessWatcher interval=5s error="loading and assigning BPF objects: field KprobeSysBind: program kprobe_sys_bind: map watch_events: map create: invalid argument (MaxEntries may be incorrectly set to zero)"
time=2024-11-19T11:48:20.481Z level=INFO msg="Starting main node" component=beyla.Instrumenter
time=2024-11-19T11:48:25.399Z level=INFO msg="instrumenting process" component=discover.TraceAttacher cmd=/usr/local/bin/cephcsi pid=2491 ino=110240721 type=go
time=2024-11-19T11:48:26.104Z level=INFO msg="instrumenting process" component=discover.TraceAttacher cmd=/usr/local/bin/cephcsi pid=2467 ino=110240721 type=go
time=2024-11-19T11:48:26.887Z level=INFO msg="instrumenting process" component=discover.TraceAttacher cmd=/bin/node_exporter pid=2284 ino=109840374 type=go

cc @rafaelroquetto @grcevski

[rafaelroquetto]

#1381 has fixed it for good