openstack
/
kolla
Code Issues Proposed changes

Clarify comment about binding erlang to IPv4 

The comment was confusing and not explaining what the real issue is
when binding erlang to an IPv4 address.

Change-Id: I819ea137fa37c0b2711efb1e7cb1e518ae26b9ab
Related-Bug: #1562701
This commit is contained in:
Martin André 2016-04-11 10:47:46 +02:00
parent 5b94bf7994
commit ed1c71837f
1 changed files with 9 additions and 5 deletions
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14
ansible/roles/rabbitmq/templates/rabbitmq-env.conf.j2
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@ -4,11 +4,15 @@ RABBITMQ_BOOT_MODULE=rabbit_clusterer
RABBITMQ_LOG_BASE=/var/log/kolla/rabbitmq
RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS="-pa /usr/lib/rabbitmq/lib/rabbitmq_server-3.5.7/plugins/rabbitmq_clusterer-3.5.x-189b3a81.ez/rabbitmq_clusterer-3.5.x-189b3a81/ebin"
# TODO(sdake, vhosakot) Heisenbugs await if the control services are collocated on
# one node. The reason is epmd binds to wildcard (all interfaces) and could
# potentially interact with the neutron external or tenant networks.
# unfortunately epmd is broken with ipv6, so yeah, no bueno.
# See bug https://bugs.launchpad.net/ubuntu/+source/erlang/+bug/1374109
# TODO(sdake, vhosakot)
# erlang by default binds to wildcard (all interfaces) and can potentially
# interfere with the neutron external or tenant networks. We should in theory
# bind epmd to the host's IPv4 address to address the issue however this also
# has issues and can crash erlang when it is compiled with IPv6 support.
# See bugs:
# https://bugs.launchpad.net/ubuntu/+source/erlang/+bug/1374109
# https://bugs.launchpad.net/kolla/+bug/1562701
# https://bugzilla.redhat.com/show_bug.cgi?id=1324922
# export ERL_EPMD_ADDRESS={{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}
export ERL_EPMD_PORT={{ rabbitmq_epmd_port }}