Public bug reported: [Impact]
When a client terminates uncleanly, the global counters for publishers and consumers do not handle this gracefully. For the consumer metric, the value of the gauge does not decrease after the termination, and so the value ever-increases. For the publisher metric, the value of the gauge decreases below zero and does not recover, leading to a ever-decreasing negative value on the gauge. [Test plan] lxc launch ubuntu:jammy rabbitmq-jammy-test lxc shell rabbitmq-jammy-test apt install -y rabbitmq-server echo '[rabbitmq_prometheus].' > /etc/rabbitmq/enabled_plugins systemctl restart rabbitmq-server.service wget https://github.com/rabbitmq/rabbitmq-perf- test/releases/download/v2.21.0/perf-test-2.21.0.jar apt install -y default-jre for i in $(seq 1 5); do java -jar perf-test-2.21.0.jar --time 5; curl -s 127.0.0.1:15692/metrics | grep -E 'rabbitmq_global_(consumers|publishers){'; done The output of this command shows the value of the rabbitmq_global_consumers and rabbitmq_global_publishers after each execution of the test. The problem described of monotonically increasing and decreasing values will be observed. As we are connecting and disconnecting a single client the expected value should be 0 for both counters. [Where problems could occur] This is a simple patch that calls the functions for deleting consumers and publishers in the correct places. It should not break anything else than the counters themselves but they were broken to begin with. [Other Info] This was patched upstream from version 3.10 so this patch is already applied to Noble and Oracular that use version 3.12. This is the upstream patch: https://github.com/rabbitmq/rabbitmq-server/pull/6244 ** Affects: rabbitmq-server (Ubuntu) Importance: Undecided Status: New ** Affects: rabbitmq-server (Ubuntu Jammy) Importance: Undecided Assignee: Jorge Merlino (jorge-merlino) Status: New ** Also affects: rabbitmq-server (Ubuntu Jammy) Importance: Undecided Status: New ** Changed in: rabbitmq-server (Ubuntu Jammy) Assignee: (unassigned) => Jorge Merlino (jorge-merlino) ** Description changed: [Impact] When a client terminates uncleanly, the global counters for publishers and consumers do not handle this gracefully. For the consumer metric, the value of the gauge does not decrease after the termination, and so the value ever-increases. For the publisher metric, the value of the gauge decreases below zero and does not recover, leading to a ever-decreasing negative value on the gauge. [Test plan] lxc launch ubuntu:jammy rabbitmq-jammy-test lxc shell rabbitmq-jammy-test apt install -y rabbitmq-server echo '[rabbitmq_prometheus].' > /etc/rabbitmq/enabled_plugins systemctl restart rabbitmq-server.service wget https://github.com/rabbitmq/rabbitmq-perf- test/releases/download/v2.21.0/perf-test-2.21.0.jar apt install -y default-jre for i in $(seq 1 5); do java -jar perf-test-2.21.0.jar --time 5; curl -s 127.0.0.1:15692/metrics | grep -E 'rabbitmq_global_(consumers|publishers){'; done The output of this command shows the value of the rabbitmq_global_consumers and rabbitmq_global_publishers after each execution of the test. The problem described of monotonically increasing and decreasing values will be observed. As we are connecting and disconnecting a single client the expected value should be 0 for both counters. [Where problems could occur] This is a simple patch that calls the functions for deleting consumers and publishers in the correct places. It should not break anything else than the counters themselves but they were broken to begin with. [Other Info] This was patched upstream from version 3.10 so this patch is already - applied to Noble and Oracular that use version 3.12. + applied to Noble and Oracular that use version 3.12. This is the + upstream patch: https://github.com/rabbitmq/rabbitmq-server/pull/6244 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2073932 Title: rabbitmq_global_publishers and rabbitmq_global_consumers fail to handle unclean client termination To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rabbitmq-server/+bug/2073932/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
