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ci: run USDT interface test in a VM

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Our CI tasks are run by CirrusCI in Docker containers in a Google
Compute Engine based Kubernetes environment. These containers have
limited capabilities - especially CAP_SYS_ADMIN is missing. See
https://github.com/bitcoin/bitcoin/issues/23296#issuecomment-1024920845

We need elevated privileges to hook into the USDT tracepoints. We use a
CirrusCI "compute_engine_instance" (a VM, not a container) where we have
the required privileges. The ubunut-mininmal-2204-lts was choosen with
debian-11 being an alternative. Both pack an outdated 'bpfcc-tools'
package (v0.18.0) from 2020. This version prints warnings to stderr
during BPF bytecode compilation, which causes our functional test runner
to fail. This is fixed in newer verison.

Until debian-12 or a newer Ubuntu release is avaliable as image in GCE
(https://cloud.google.com/compute/docs/images/os-details), we use a
third-party and untrusted PPA that releases up-to-date versions of the
package.

The official iovisor (authors of BCC) PPA is outdated too. An
alternative would be to compile BCC from source in the CI.

Co-authored-by: MacroFake <falke.marco@gmail.com>
This commit is contained in:
0xb10c
2022-07-01 13:49:55 +02:00
parent dba6f82342
commit cc7335edc8
4 changed files with 28 additions and 7 deletions
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14
.cirrus.yml
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@@ -259,12 +259,20 @@ task:
MAKEJOBS: "-j4" # Avoid excessive memory use due to MSan
task:
name: '[ASan + LSan + UBSan + integer, no depends] [jammy]'
name: '[ASan + LSan + UBSan + integer, no depends, USDT] [jammy]'
<< : *GLOBAL_TASK_TEMPLATE
container:
image: ubuntu:jammy
# We can't use a 'container' for the USDT interface tests as the CirrusCI
# containers don't have privileges to hook into bitcoind. CirrusCI uses
# Google Compute Engine instances: https://cirrus-ci.org/guide/custom-vms/
# Images can be found here: https://cloud.google.com/compute/docs/images/os-details
compute_engine_instance:
image_project: ubuntu-os-cloud
image: family/ubuntu-2204-lts # when upgrading, check if we can drop "ADD_UNTRUSTED_BPFCC_PPA"
cpu: 4
memory: 12G
env:
<< : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV
HOME: /root/ # Only needed for compute_engine_instance
FILE_ENV: "./ci/test/00_setup_env_native_asan.sh"
MAKEJOBS: "-j4" # Avoid excessive memory use