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Migrate k8s data to etcd3 api store

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Default backend is now etcd3 (was etcd2).
The migration process consists of the following steps:
* check if migration is necessary
* stop etcd on first etcd server
* run migration script
* start etcd on first etcd server
* stop kube-apiserver until configuration is updated
* update kube-apiserver
* purge old etcdv2 data
This commit is contained in:
Matthew Mosesohn
2017-03-06 13:22:13 +03:00
parent 4038954f96
commit 804e9a09c0
4 changed files with 62 additions and 5 deletions
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4
roles/kubernetes/master/defaults/main.yml
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@@ -13,6 +13,9 @@ kube_apiserver_node_port_range: "30000-32767"
etcd_config_dir: /etc/ssl/etcd
etcd_cert_dir: "{{ etcd_config_dir }}/ssl"
# ETCD backend for k8s data
kube_apiserver_storage_backend: etcd3
# Limits for kube components
kube_controller_memory_limit: 512M
kube_controller_cpu_limit: 250m
@@ -29,7 +32,6 @@ kube_apiserver_memory_limit: 2000M
kube_apiserver_cpu_limit: 800m
kube_apiserver_memory_requests: 256M
kube_apiserver_cpu_requests: 300m
kube_apiserver_storage_backend: etcd2
## Variables for OpenID Connect Configuration https://kubernetes.io/docs/admin/authentication/
## To use OpenID you have to deploy additional an OpenID Provider (e.g Dex, Keycloak, ...)