c12s-kubespray/upgrade-cluster.yml
Matthew Mosesohn 97ebbb9672 Add graceful upgrade process
Based on #718 introduced by rsmitty.

Includes all roles and all options to support deployment of
new hosts in case they were added to inventory.

Main difference here is that master role is evaluated first
so that master components get upgraded first.

Fixes #694
2017-02-16 17:18:38 +03:00

92 lines
2.7 KiB
YAML

---
- hosts: localhost
gather_facts: False
roles:
- bastion-ssh-config
tags: [localhost, bastion]
- hosts: k8s-cluster:etcd:calico-rr
any_errors_fatal: true
gather_facts: false
vars:
# Need to disable pipelining for bootstrap-os as some systems have requiretty in sudoers set, which makes pipelining
# fail. bootstrap-os fixes this on these systems, so in later plays it can be enabled.
ansible_ssh_pipelining: false
roles:
- bootstrap-os
tags:
- bootstrap-os
- hosts: k8s-cluster:etcd:calico-rr
any_errors_fatal: true
vars:
ansible_ssh_pipelining: true
gather_facts: true
- hosts: k8s-cluster:etcd:calico-rr
any_errors_fatal: true
roles:
- { role: kernel-upgrade, tags: kernel-upgrade, when: kernel_upgrade is defined and kernel_upgrade }
- { role: kubernetes/preinstall, tags: preinstall }
- { role: docker, tags: docker }
- role: rkt
tags: rkt
when: "'rkt' in [etcd_deployment_type, kubelet_deployment_type, vault_deployment_type]"
- hosts: etcd:k8s-cluster:vault
any_errors_fatal: true
roles:
- { role: vault, tags: vault, vault_bootstrap: true, when: "cert_management == 'vault'" }
- hosts: etcd:!k8s-cluster
any_errors_fatal: true
roles:
- { role: etcd, tags: etcd }
- hosts: k8s-cluster
any_errors_fatal: true
roles:
- { role: etcd, tags: etcd }
- hosts: etcd:k8s-cluster:vault
any_errors_fatal: true
roles:
- { role: vault, tags: vault, when: "cert_management == 'vault'"}
#Handle upgrades to master components first to maintain backwards compat.
- hosts: kube-master
any_errors_fatal: true
serial: 1
roles:
- { role: upgrade/pre-upgrade, tags: pre-upgrade }
- { role: kubernetes/node, tags: node }
- { role: kubernetes/master, tags: master }
- { role: network_plugin, tags: network }
- { role: upgrade/post-upgrade, tags: post-upgrade }
#Finally handle worker upgrades, based on given batch size
- hosts: kube-node:!kube-master
any_errors_fatal: true
serial: "{{ serial | default('20%') }}"
roles:
- { role: upgrade/pre-upgrade, tags: pre-upgrade }
- { role: kubernetes/node, tags: node }
- { role: network_plugin, tags: network }
- { role: upgrade/post-upgrade, tags: post-upgrade }
- { role: kubernetes-apps/network_plugin, tags: network }
- hosts: calico-rr
any_errors_fatal: true
roles:
- { role: network_plugin/calico/rr, tags: network }
- hosts: k8s-cluster
any_errors_fatal: true
roles:
- { role: dnsmasq, when: "dns_mode == 'dnsmasq_kubedns'", tags: dnsmasq }
- { role: kubernetes/preinstall, when: "dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'", tags: resolvconf }
- hosts: kube-master[0]
any_errors_fatal: true
roles:
- { role: kubernetes-apps, tags: apps }