The var ```-e upgrade_cluster_setup=true``` is needed to be set in order to migrate the deploys of e.g kube-apiserver inside the cluster immediately which is usually only done in the graceful upgrade. (Refer to [#4139](https://github.com/kubernetes-sigs/kubespray/issues/4139) and [#4736](https://github.com/kubernetes-sigs/kubespray/issues/4736))
The var ```-e upgrade_cluster_setup=true``` is needed to be set in order to migrate the deploys of e.g kube-apiserver inside the cluster immediately which is usually only done in the graceful upgrade. (Refer to [#4139](https://github.com/kubernetes-sigs/kubespray/issues/4139) and [#4736](https://github.com/kubernetes-sigs/kubespray/issues/4736))
@ -48,7 +48,7 @@ existing cluster. That means there must be at least 1 kube_control_plane already
After a successful upgrade, the Server Version should be updated:
After a successful upgrade, the Server Version should be updated:
@ -62,7 +62,7 @@ Server Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.7", GitCom
You can control how many nodes are upgraded at the same time by modifying the ansible variable named `serial`, as explained [here](https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_strategies.html#setting-the-batch-size-with-serial). If you don't set this variable, it will upgrade the cluster nodes in batches of 20% of the available nodes. Setting `serial=1` would mean upgrade one node at a time.
You can control how many nodes are upgraded at the same time by modifying the ansible variable named `serial`, as explained [here](https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_strategies.html#setting-the-batch-size-with-serial). If you don't set this variable, it will upgrade the cluster nodes in batches of 20% of the available nodes. Setting `serial=1` would mean upgrade one node at a time.
Assuming you don't explicitly define a kubernetes version in your k8s_cluster.yml, you simply check out the next tag and run the upgrade-cluster.yml playbook
Assuming you don't explicitly define a kubernetes version in your k8s_cluster.yml, you simply check out the next tag and run the upgrade-cluster.yml playbook
* If you do define kubernetes version in your inventory (e.g. group_vars/k8s_cluster.yml) then either make sure to update it before running upgrade-cluster, or specify the new version you're upgrading to: `ansible-playbook -i inventory/mycluster/hosts.ini -b upgrade-cluster.yml -e kube_version=v1.11.3`
* If you do define kubernetes version in your inventory (e.g. group_vars/k8s_cluster.yml) then either make sure to update it before running upgrade-cluster, or specify the new version you're upgrading to: `ansible-playbook -i inventory/mycluster/hosts.ini -b upgrade-cluster.yml -e kube_version=1.11.3`
Otherwise, the upgrade will leave your cluster at the same k8s version defined in your inventory vars.
Otherwise, the upgrade will leave your cluster at the same k8s version defined in your inventory vars.