starlingx
/
config
Code Issues Proposed changes

Configure anti-affinity for coredns pods 

There is no supported way to do this to configure the coredns pod for
anti-affinity. See https://github.com/kubernetes/kubeadm/issues/1416

For now we will set this with a patch in the kubernetes manifest.

Change-Id: I3c83cee9d3209b223fd2c2e1149a85205e3c9b15
Story: 2004520
Task: 29726
Signed-off-by: David Sullivan <david.sullivan@windriver.com>
This commit is contained in:
David Sullivan 2019-03-05 00:11:44 -05:00
parent 57124b49dc
commit 91d7422bd9
2 changed files with 11 additions and 1 deletions
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2
puppet-manifests/centos/build_srpm.data
View File

@ -1,2 +1,2 @@
SRC_DIR="src"
TIS_PATCH_VER=80
TIS_PATCH_VER=81

10
puppet-manifests/src/modules/platform/manifests/kubernetes.pp
View File

@ -151,6 +151,11 @@ class platform::kubernetes::master::init
logoutput => true,
}
-> exec { 'Use anti-affinity for coredns pods':
command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system patch deployment coredns -p \'{"spec":{"template":{"spec":{"affinity":{"podAntiAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":[{"labelSelector":{"matchExpressions":[{"key":"k8s-app","operator":"In","values":["kube-dns"]}]},"topologyKey":"kubernetes.io/hostname"}]}}}}}}\'', # lint:ignore:140chars
logoutput => true,
}
# Remove the taint from the master node
-> exec { 'remove taint from master node':
command => "kubectl --kubeconfig=/etc/kubernetes/admin.conf taint node ${::platform::params::hostname} node-role.kubernetes.io/master- || true", # lint:ignore:140chars
@ -257,6 +262,11 @@ class platform::kubernetes::master::init
logoutput => true,
}
-> exec { 'Use anti-affinity for coredns pods':
command => 'kubectl --kubeconfig=/etc/kubernetes/admin.conf -n kube-system patch deployment coredns -p \'{"spec":{"template":{"spec":{"affinity":{"podAntiAffinity":{"requiredDuringSchedulingIgnoredDuringExecution":[{"labelSelector":{"matchExpressions":[{"key":"k8s-app","operator":"In","values":["kube-dns"]}]},"topologyKey":"kubernetes.io/hostname"}]}}}}}}\'', # lint:ignore:140chars
logoutput => true,
}
# Remove the taint from the master node
-> exec { 'remove taint from master node':
command => "kubectl --kubeconfig=/etc/kubernetes/admin.conf taint node ${::platform::params::hostname} node-role.kubernetes.io/master- || true", # lint:ignore:140chars