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Optionally associate master instance with AWS Elastic IP

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When MASTER_RESERVED_IP is set to elastic IP from AWS, then aws/util.sh will
associate it with master instance and assign it to KUBE_MASTER_IP. If no MASTER_RESERVED_IP
is set, new elastic ip will be requested from amazon. This allows cluster certificates to
be generated for an IP that doesn't change between stopping & starting cluster instances.

The requested elastic ip is not released when kube-down.sh is run. I think it is good
because user could have created DNS records and it would be bad if the IP was removed.
He can reuse it next time through MASTER_RESERVED_IP when setting up cluster again.
This commit is contained in:
Madis Nõmme
2015-05-06 16:27:17 +03:00
parent ec19d41b63
commit d4d02a9028
2 changed files with 32 additions and 2 deletions
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4
cluster/aws/config-default.sh
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@@ -43,7 +43,9 @@ MINION_SCOPES=""
POLL_SLEEP_INTERVAL=3
PORTAL_NET="10.0.0.0/16"
MASTER_IP_RANGE="${MASTER_IP_RANGE:-10.246.0.0/24}"
# If set to Elastic IP, master instance will be associated with this IP.
# Otherwise new Elastic IP will be aquired
MASTER_RESERVED_IP="${MASTER_RESERVED_IP:-}"
# When set to true, Docker Cache is enabled by default as part of the cluster bring up.
ENABLE_DOCKER_REGISTRY_CACHE=true