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canonical / hotsos

Software analysis toolkit. Define checks in high-level language and leverage library to perform analysis of common Cloud applications.
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rabbitmqctl commands not working when run as snap on bionic #152

Closed dosaboy closed 1 year ago

dosaboy commented 3 years ago

For some reason when running hotsos as a snap against a host (i.e. not a sosreport) the rabbitmq plugin fails to run rabbitmqctl report (not clear if it is failing or just not running at all) which results in no output from e.g. [1]

[1] https://github.com/canonical/hotsos/blob/6a0d650a8d76b5a5f85f4ddc8c0a9f8939e1de7a/plugins/rabbitmq/pyparts/services.py#L28

nicolasbock commented 3 years ago

I ran this against a rabbitmq-server unit and got:

hotsos:
  version: 347
  repo-info: fd5b98c
system:
  hostname: juju-69e359-test-15
  os: ubuntu focal
  num-cpus: 1
  load: 0.28, 0.56, 0.39
  virtualisation: kvm
  rootfs: /dev/vda1       20145724 2958988  17170352  15% /
  unattended-upgrades: ENABLED
rabbitmq:
  services:
    - beam.smp (1)
    - epmd (1)
    - rabbitmq-server (1)
  resources:
    vhosts:
      - /
      - openstack
    vhost-queue-distributions:
      openstack:
        rabbit@juju-69e359-test-15: 70 (100.00%)
    connections-per-host:
      rabbit@juju-69e359-test-15: 41
    client-connections:
      neutron:
        neutron-openvswitch-agent: 14
        neutron-dhcp-agent: 8
        neutron-metadata-agent: 4
        neutron-metering-agent: 3
        neutron-l3-agent: 2
      nova:
        nova-api-metadata: 8
        nova-compute: 2
    cluster-partition-handling: ignore
  dpkg:
    - rabbitmq-server 3.8.2-0ubuntu1.3
  potential-issues:
    - desc: rabbit@juju-69e359-test-15 holds more than 2/3 of queues for 1/2 vhost(s)
      origin: rabbitmq.services
      type: RabbitMQWarning
    - desc: Cluster partition handling is currently set to ignore. This is potentially
        dangerous and a setting of pause_minority is recommended.
      origin: rabbitmq.services
      type: RabbitMQWarning
juju:
  version: 2.9.12
  machine: '15'
  charms:
    - rabbitmq-server-440
  units:
    local:
      - rabbitmq-server-0
kernel:
  version: 5.4.0-88-generic
  boot: ro console=tty1 console=ttyS0
  cpu:
    smt: disabled
  memory-checks: no issues found

It identified queues and vhosts. Is there something missing?

dosaboy commented 3 years ago

aha yes, it seems that the issue is specific to running on bionic (focal works for me too).

nicolasbock commented 3 years ago

I can run

sudo /snap/hotsos/current/hotsos.sh --rabbitmq

and get the expected result. This seems to be a snap confinement problem. The snapd versions are identical though, snapd-2.51.1+18.04 vs. snapd-2.51.1+20.04ubuntu2.

dosaboy commented 1 year ago

we do not currently support running the snap on bionic since it has py36 which is not compatible and breaks a core20 snap in classic mode