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Scale-up functionality for etcd cluster

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* Set ETCD_INITIAL_CLUSTER_STATE from `new` to `existing`,
because parameter `new` makes sense only on cluster assembly
stage.
* If cluster exists and current node is not a part
of the cluster, add it with command `etcdctl add member name url`.

Closes kubespray/kargo/#270
This commit is contained in:
Evgeny L
2016-05-27 12:55:52 +03:00
parent cb92b30c25
commit 0500f27db8
6 changed files with 56 additions and 19 deletions
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13
roles/etcd/templates/etcd.j2
View File

@@ -1,17 +1,12 @@
ETCD_DATA_DIR="/var/lib/etcd"
{% if inventory_hostname in groups['etcd'] %}
{% set etcd = {} %}
{% for host in groups['etcd'] %}
{% if inventory_hostname == host %}
{% set _dummy = etcd.update({'name':"etcd"+loop.index|string}) %}
{% endif %}
{% endfor %}
ETCD_ADVERTISE_CLIENT_URLS="http://{{ hostvars[inventory_hostname]['access_ip'] | default(hostvars[inventory_hostname]['ip'] | default( hostvars[inventory_hostname]['ansible_default_ipv4']['address'])) }}:2379"
ETCD_INITIAL_ADVERTISE_PEER_URLS="http://{{ hostvars[inventory_hostname]['access_ip'] | default(hostvars[inventory_hostname]['ip'] | default( hostvars[inventory_hostname]['ansible_default_ipv4']['address'])) }}:2380"
ETCD_INITIAL_CLUSTER_STATE="new"
ETCD_INITIAL_CLUSTER_STATE="{% if etcd_cluster_is_healthy.rc != 0 | bool %}new{% else %}existing{% endif %}"
ETCD_INITIAL_CLUSTER_TOKEN="k8s_etcd"
ETCD_LISTEN_PEER_URLS="http://{{ hostvars[inventory_hostname]['ip'] | default( hostvars[inventory_hostname]['ansible_default_ipv4']['address']) }}:2380"
ETCD_NAME="{{ etcd.name }}"
ETCD_NAME="{{ etcd_member_name }}"
{% endif %}
ETCD_INITIAL_CLUSTER="{% for host in groups['etcd'] %}etcd{{ loop.index|string }}=http://{{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(hostvars[host]['ansible_default_ipv4']['address'])) }}:2380{% if not loop.last %},{% endif %}{% endfor %}"
ETCD_INITIAL_CLUSTER="{% for host in groups['etcd'] %}etcd{{ loop.index|string }}={{ hostvars[host]['etcd_peer_url'] }}{% if not loop.last %},{% endif %}{% endfor %}"
ETCD_LISTEN_CLIENT_URLS="http://{{ hostvars[inventory_hostname]['ip'] | default( hostvars[inventory_hostname]['ansible_default_ipv4']['address']) }}:2379,http://127.0.0.1:2379"