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Change worker managed instance group to span zones in region

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* Change Google Cloud module to require the `region` variable
* Workers are created in random zones within the given region
* Tolerate Google Cloud zone failures or capacity issues
* If workers are preempted (if enabled), replacement instances can
be drawn from any zone in the region, which should avoid scheduling
issues that were possible before if a single zone aggressively
preempts instances (presumably due to Google Cloud capacity)
This commit is contained in:
Dalton Hubble
2017-11-04 10:57:12 -07:00
parent e32885c9cd
commit 6300383b43
8 changed files with 26 additions and 11 deletions
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2
docs/google-cloud.md
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@ -77,6 +77,7 @@ module "google-cloud-yavin" {
source = "git::https://github.com/poseidon/typhoon//google-cloud/container-linux/kubernetes"
# Google Cloud
region = "us-central1"
zone = "us-central1-c"
dns_zone = "example.com"
dns_zone_name = "example-zone"
@ -196,6 +197,7 @@ Learn about [version pinning](concepts.md#versioning), maintenance, and [addons]
| Name | Description | Example |
|:-----|:------------|:--------|
| cluster_name | Unique cluster name (prepended to dns_zone) | "yavin" |
| region | Google Cloud region | "us-central1" |
| zone | Google Cloud zone | "us-central1-f" |
| dns_zone | Google Cloud DNS zone | "google-cloud.example.com" |
| dns_zone_name | Google Cloud DNS zone name | "example-zone" |

1
docs/index.md
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@ -46,6 +46,7 @@ module "google-cloud-yavin" {
source = "git::https://github.com/poseidon/typhoon//google-cloud/container-linux/kubernetes"
# Google Cloud
region = "us-central1"
zone = "us-central1-c"
dns_zone = "example.com"
dns_zone_name = "example-zone"