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When a service connects to the database VIP from the node hosting this
VIP, the resulting TCP socket has a src address which is by default
bound to the VIP as well. If the VIP is failed over to another node
while the socket's Send-Q is not empty, TCP keepalive won't engage and
the service will become unavailable for a very long time (by default
more than 10m).
To prevent failover issues, DB connections should have the src address
of their TCP socket bound to the IP of the network interface used for
MySQL traffic. This is achieved by passing a new option to the
database connection URIs. This option is available starting from
PyMySQL 0.7.9-2.
We use a new intermediate variable in hiera to hold the IP to be used
as a source address for all DB connections. All services adapt their
database URI accordingly.
Moreover, a new YAML validation check is added to guarantee that new
services will construct their database URI appropriately.
Change-Id: Ic69de63acbfb992314ea30a3a9b17c0b5341c035
Closes-Bug: #1643487
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Heat now supports release name aliases, so we can replace
the inconsistent mix of date related versions with one consistent
version that aligns with the supported version of heat for this
t-h-t branch.
This should also help new users who sometimes copy/paste old templates
and discover intrinsic functions in the t-h-t docs don't work because
their template version is too old.
Change-Id: Ib415e7290fea27447460baa280291492df197e54
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This patch adds a new DefaultPasswords parameter to
composable services. This is needed to help provide
access to top level password resources that overcloud.yaml
currently manages (passwords for Rabbit, Mysql, etc.).
Moving the RandomString resources into composable services
would cause them to regenerate within the stack. With this
approach we can leave them where they are while we deprecate
the top level mechanism and move the code that uses the
passwords into the composable services.
Change-Id: I4f21603c58a169a093962594e860933306879e3f
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This will be needed to pick the network where the service has
to bind to from within the service template.
Change-Id: I52652e1ad8c7b360efd2c7af199e35932aaaea8c
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Currently we use hyphens, e.g cinder-api, but in overcloud.yaml
we have a lot of references to services (e.g for AllNodesConfig)
by underscore, e.g cinder_api. To enable dynamic generation of
this data, we need the service name in underscore format.
Change-Id: Ief13dfe5d8d7691dfe2534ad5c39d7eacbcb6f70
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This patch adds a new service_name section to each composable
service. We now have an explicit unit test check to ensure that
service_name exists in tools/yaml-validate.py.
This patch also wires service_names into hieradata on each
of the roles so that tools can access the deployed services locally
during deployment and upgrades.
Change-Id: I60861c5aa760534db3e314bba16a13b90ea72f0c
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This option belongs to oslo.db, and oslo.db enforces UTF-8 for
client connections since I676c9c5e418905160e4ab647b8a0f2fb601e8962 that
is included since Kilo. Neutron switched to the library in Kilo too
(I1ccf896922a5a762d37a1a3b93c56c8b8ae8c085).
I guess it's time to remove this hardcoded charset and allow oslo.db to
do the right thing.
Change-Id: I7d6ffa734374aeaf6fa6a7d98048bbbdfbeb412a
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This patch drops the extraconfig interface in favor
of using the composable services nested stack instead.
The benefit is that it is easier to enable multiple services
(like network and storage backends at the same time) and all
of the plumgrid settings get to live in the same file.
Partially-implements: blueprint composable-services-within-roles
Change-Id: I1c5827e3650a29f7a0258531f84ae0f50f22343d
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Partially-implements: blueprint composable-services-within-roles
Depends-On: I8536782d433f97a9b619e54a1eb1ea0edb8fdaf0
Change-Id: I3309997413998f1d90117e361d1578da3633e56c
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Jenkins
Damien Ciabrini
Steven Hardy
Dan Prince
Giulio Fidente
Ihar Hrachyshka