[PATCH] Raise the file limit on the RabbitMQ cluster

RabbitMQ recommends[0] that the open file descriptor limit be set to a minimum of 50K. It recommends that the maximum number of open connections be multiplied by 2 and added to the total number of queues. Finally, it suggests that 500K isn't an unreasonable setting. This sets the default to 500K and makes the value configurable. [0] https://www.rabbitmq.com/production-checklist.html Signed-off-by: Jeremy Cline <jcline(a)redhat.com&gt; --- I have permissions to commit this, but I'd like the sysadmins to review it for (in)sanity. handlers/restart_services.yml | 6 ++++++ roles/rabbitmq_cluster/defaults/main.yml | 2 ++ roles/rabbitmq_cluster/tasks/main.yml | 18 ++++++++++++++++++ 3 files changed, 26 insertions(+) create mode 100644 roles/rabbitmq_cluster/defaults/main.yml diff --git a/handlers/restart_services.yml b/handlers/restart_services.yml index b21d8ec25..f791ce084 100644 --- a/handlers/restart_services.yml +++ b/handlers/restart_services.yml @@ -179,3 +179,9 @@ - name: restart buildmaster service: name=buildmaster state=restarted + +- name: restart rabbitmq + systemd: + name: rabbitmq-server + state: restarted + systemd_reload: yes diff --git a/roles/rabbitmq_cluster/defaults/main.yml b/roles/rabbitmq_cluster/defaults/main.yml new file mode 100644 index 000000000..b58d65393 --- /dev/null +++ b/roles/rabbitmq_cluster/defaults/main.yml @@ -0,0 +1,2 @@ +# https://www.rabbitmq.com/production-checklist.html#resource-limits-file-h... +rabbitmq_cluster_file_limit: 500000 diff --git a/roles/rabbitmq_cluster/tasks/main.yml b/roles/rabbitmq_cluster/tasks/main.yml index e3d8442ee..468cbc5ac 100644 --- a/roles/rabbitmq_cluster/tasks/main.yml +++ b/roles/rabbitmq_cluster/tasks/main.yml @@ -78,6 +78,24 @@ - rabbitmq_cluster - config +- name: Create RabbitMQ systemd override directory + file: + path: /etc/systemd/system/rabbitmq-server.service.d/ + state: directory + tags: + - rabbitmq_cluster + - config + +- name: Override file limit on rabbitmq + copy: + content: "[Service]\nLimitNOFILE={{rabbitmq_cluster_file_limit}}\n" + dest: /etc/systemd/system/rabbitmq-server.service.d/override.conf + notify: + - restart rabbitmq + tags: + - rabbitmq_cluster + - config + - name: start rabbitmq service: name=rabbitmq-server state=started enabled=yes tags: -- 2.17.1