What's Changed

Breaking changes 🔨

Network metrics: new behavior of the direction field

The direction attribute (whose values were ingress/egress until Beyla 1.7.0) has been renamed to iface_direction. This attribute specifies in which direction of the network interface is a flow captured (ingress or egress).

Since Beyla 1.8.0, the direction attribute shows the direction of a connection (valid for TCP): request or response.

PR: https://github.com/grafana/beyla/pull/1074

Process CPU metrics: rename attribute process.cpu.state to cpu.mode

Process metrics are still an experimental/unstable OpenTelemetry specification. We renamed that attribute according to the latest changes in the specification.

PR: https://github.com/grafana/beyla/pull/1110

Internal metrics: renamed beyla_build_info to beyla_internal_build_info

This breaking change should not have noticeable effect in someone, as internal metrics are aimed to debug Beyla.

PR: https://github.com/grafana/beyla/pull/1119

Bug fixes 🐛

• Improving thread safety of K8s informer DB by @mariomac in https://github.com/grafana/beyla/pull/1118
• Prevent negative network tx/rx data for process by @mariomac in https://github.com/grafana/beyla/pull/1123
• Fix OTEL_RESOURCE_ATTRIBUTES variable by @rafaelroquetto in https://github.com/grafana/beyla/pull/1085
• Fix handling of different iovec struct layouts / enums by @rafaelroquetto in https://github.com/grafana/beyla/pull/1086
• Fix handling of ITER_IOVEC by @rafaelroquetto in https://github.com/grafana/beyla/pull/1090

Other changes/additions

• adding Rafael to list of maintainers by @mariomac in https://github.com/grafana/beyla/pull/1076
• Update ClusterRole permissions in documentation by @mariomac in https://github.com/grafana/beyla/pull/1079
• Update ClusterRole permissions in documentation [1.7 backport] by @mariomac in https://github.com/grafana/beyla/pull/1081
• Check if required capabilities are available by @rafaelroquetto in https://github.com/grafana/beyla/pull/1067
• Helm Chart 1.3.0 with Beyla 1.7.0 by @mariomac in https://github.com/grafana/beyla/pull/1078
• Automatic update of offsets.json by @github-actions in https://github.com/grafana/beyla/pull/1084
• Improve debug information for old kernels by @grcevski in https://github.com/grafana/beyla/pull/1088
• Automatic update of offsets.json by @github-actions in https://github.com/grafana/beyla/pull/1089
• Attempt fix missing http calls by @grcevski in https://github.com/grafana/beyla/pull/1092
• Use kprobe for unreliable recvmsg return probe by @grcevski in https://github.com/grafana/beyla/pull/1095
• Update Alloy examples matching newer version by @marctc in https://github.com/grafana/beyla/pull/1094
• Memory optimizations for various parts of the code by @grcevski in https://github.com/grafana/beyla/pull/1096
• Add Beyla debug dashboard by @marctc in https://github.com/grafana/beyla/pull/1098
• Validate timeout greater than 0s for InformersSyncTimeout by @marctc in https://github.com/grafana/beyla/pull/1103
• Fix slog errors by @rafaelroquetto in https://github.com/grafana/beyla/pull/1104
• Fix coverage exclusion pattern by @mariomac in https://github.com/grafana/beyla/pull/1106
• Detect OTel instrumentations in applications by @grcevski in https://github.com/grafana/beyla/pull/1101
• Update make docs procedure by @github-actions in https://github.com/grafana/beyla/pull/1102
• Update Go version to 1.23 by @mariomac in https://github.com/grafana/beyla/pull/1105
• Fixing compilation on Mac by @mariomac in https://github.com/grafana/beyla/pull/1107
• Split iovec reading for tcp_recvmsg by @grcevski in https://github.com/grafana/beyla/pull/1108
• Support testing different kernel versions by @rafaelroquetto in https://github.com/grafana/beyla/pull/1100
• Terminate Beyla if we can't open a configured Prometheus port by @grcevski in https://github.com/grafana/beyla/pull/1111
• Add some default settings for beyla network metrics by @xujiaxj in https://github.com/grafana/beyla/pull/1112
• Remove self references from service graphs by @grcevski in https://github.com/grafana/beyla/pull/1115
• Automatic update of offsets.json by @github-actions in https://github.com/grafana/beyla/pull/1116
• K8s net attributes: default src/dst owner type by @mariomac in https://github.com/grafana/beyla/pull/1114
• Resolve node ips by @grcevski in https://github.com/grafana/beyla/pull/1121

New Contributors

• @xujiaxj made their first contribution in https://github.com/grafana/beyla/pull/1112

Full Changelog: https://github.com/grafana/beyla/compare/v1.7.0...v1.8.0