Rolling ugprade is an important feature for a managed k8s service,
at this stage, two user cases will be covered:
1. Upgrade base operating system
2. Upgrade k8s version
Known limitation: When doing operating system upgrade, there is no
chance to call kubectl drain to evict pods on that node.
Task: 30185
Story: 2002210
Change-Id: Ibbed59bc135969174a20e5243ff8464908801a23
In Fedora Atomic 27 etcd and flanneld are removed from the base image.
Install them as a system containers.
* update docker-storage configuration
* add etcd and flannel tags as labels
Change-Id: I2103c7c3d50f4b68ddc11abff72bc9e3f22839f3
Closes-Bug: #1735381
Allow any value to be passed on the docker_storage_driver field by turning it
into a StringField (was EnumField), and remove the constraints limiting the
values to 'devicemapper' and 'overlay'.
Change the docker storage setup to have a generic setup for all drivers with
the exception of 'devicemapper', which keeps its own specific storage config
function. For all others, do the same we already did for overlay (with two
cases for usage of a cinder volume or not) and simply set the storage driver
in the docker configuration to the value provided in the cluster template.
Change-Id: I9aa8f232ce64ece4d439c0a476f463820a499617
Closes-Bug: #1722522
Atomic image contains:
kubernetes-1.5.2-2.fc25.x86_64
docker-1.12.6-5.git037a2f5.fc25.x86_64
flannel-0.5.5-8.fc25.x86_64
etcd-3.0.15-1.fc25.x86_64
The ironic image contains exactly the same packages.
* For this upgrade the upstream image is used, which is
uploaded here [1].
* Minor changes for flannel and docker-storage-setup
were needed.
* The image will be built in the CI and uploaded to
tarballs.openstack.org as soon as possible.
* Ironic image [2].
Notes:
* docker-storage-setup config changes were needed because in
the previous images it was disabled and it was started by us.
* We can have selinux enables in containers since the images
have kernel 4.9.x.
[1] https://fedorapeople.org/groups/magnum/fedora-atomic-25-latest.qcow2
[2] https://fedorapeople.org/groups/magnum/fedora-25-kubernetes-ironic.tar.gz
Change-Id: Iac6e30c530821a49a5c3978e335e0b1d56a576e0
In the swarm_atomic and k8s_atomic drivers container images are
stored in a dedicated cinder volume per cluster node. It is
proven that this architecture can be a scalability bottleneck.
Make the use of cinder volumes for container images and opt-in
option. If docker-volume-size is not specified no cinder
volumes will be created. Before, if docker-volume-size wasn't
specified the default value was 25.
To use cinder volumes for container storage the user will
interact with magnum as before, (meaning the valid values are
integers starting from 1).
Closes-Bug: #1638006
Change-Id: I3394c62a43bbf950b7cf0b86a71b1d9b0481d68f
This is workaround fix to support baremetal.
Following items are remained to support.
* Documents
* Functional test
To test this template, there are some requirements and problem as below.
Requirements:
* `ephemeral_disk` on ironic baremetal flavor
`ephemeral_disk` is used for docker storage instead of cinder volume.
* `fixed_subnet` must be setup with dns_nameservers like following.
* `neutron subnet-update private-subnet --dns-nameserver 8.8.8.8`
* `fixed_subnet` must be IP version 4.
if you use devstack, please add following configuration.
* `IP_VERSION=4`
* Fedora 23 image including kubernetes, etcd, flannel.
Problem:
Ironic stores `instance_info` about nova instance.
`instance_info` contains config_drive data, but this data can be
too large to store ironic.nodes table.
Magnum uses large config drive data to setup k8s.
It means, we can not start ironic instance by Magnum.
Workaround fix is changing column type of ironic.nodes.instance_info.
Following sql will help you.
`alter table ironic.nodes modify instance_info LONGTEXT;`
Partial-Implements: blueprint magnum-baremetal-full-support
Change-Id: Ica87610b9114bff4277b492de8fe528fe2860108
Closes-Bug: #1454895
Closes-Bug: #1472938
Co-Authored-By: Spyros Trigazis <strigazi@gmail.com>
Moving common/fragments to common/templates/fragments makes the common
directory better match the structure of the bay drivers.
Change-Id: I4f9e88ab9943dff9d34626ad7c708570bead211c
Michal Nasiadka