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Change default kube-system DaemonSet tolerations

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* Change kube-proxy, flannel, and calico-node DaemonSet
tolerations to tolerate `node.kubernetes.io/not-ready`
and `node-role.kubernetes.io/master` (i.e. controllers)
explicitly, rather than tolerating all taints
* kube-system DaemonSets will no longer tolerate custom
node taints by default. Instead, custom node taints must
be enumerated to opt-in to scheduling/executing the
kube-system DaemonSets
* Consider setting the daemonset_tolerations variable
of terraform-render-bootstrap at a later date

Background: Tolerating all taints ruled out use-cases
where certain nodes might legitimately need to keep
kube-proxy or CNI networking disabled
Related: https://github.com/poseidon/terraform-render-bootstrap/pull/179
This commit is contained in:
Dalton Hubble
2020-03-26 22:18:38 -07:00
parent 70bdc9ec94
commit bac5acb3bd
9 changed files with 11 additions and 8 deletions
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2
google-cloud/container-linux/kubernetes/bootstrap.tf
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@ -1,6 +1,6 @@
# Kubernetes assets (kubeconfig, manifests)
module "bootstrap" {
source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=cb170f802d09dcbe88b050257bc676e25d3c4282"
source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=42723d13a696ea63af8aacc227169395914ecb18"
cluster_name = var.cluster_name
api_servers = [format("%s.%s", var.cluster_name, var.dns_zone)]