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Merge pull request #11742 from jszczepkowski/scaler-up 

Optional creation of nodes autoscaler for GCE.
pull/6/head
Vish Kannan 2015-07-23 11:46:47 -07:00
parent c29a88dcdf 3808519907
commit b6b8056a73
3 changed files with 39 additions and 0 deletions
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9
cluster/gce/config-default.sh
View File

@ -74,6 +74,15 @@ DNS_SERVER_IP="10.0.0.10"
DNS_DOMAIN="cluster.local"
DNS_REPLICAS=1
# Optional: Create autoscaler for cluster's nodes.
# NOT WORKING YET!
ENABLE_NODE_AUTOSCALER="${KUBE_ENABLE_NODE_AUTOSCALER:-false}"
if [[ "${ENABLE_NODE_AUTOSCALER}" == "true" ]]; then
AUTOSCALER_MIN_NODES="${KUBE_AUTOSCALER_MIN_NODES:-1}"
AUTOSCALER_MAX_NODES="${KUBE_AUTOSCALER_MAX_NODES:-${NUM_MINIONS}}"
TARGET_NODE_UTILIZATION="${KUBE_TARGET_NODE_UTILIZATION:-0.7}"
fi
# Admission Controllers to invoke prior to persisting objects in cluster
ADMISSION_CONTROL=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota

9
cluster/gce/config-test.sh
View File

@ -72,6 +72,15 @@ DNS_SERVER_IP="10.0.0.10"
DNS_DOMAIN="cluster.local"
DNS_REPLICAS=1
# Optional: Create autoscaler for cluster's nodes.
# NOT WORKING YET!
ENABLE_NODE_AUTOSCALER="${KUBE_ENABLE_NODE_AUTOSCALER:-false}"
if [[ "${ENABLE_NODE_AUTOSCALER}" == "true" ]]; then
AUTOSCALER_MIN_NODES="${KUBE_AUTOSCALER_MIN_NODES:-1}"
AUTOSCALER_MAX_NODES="${KUBE_AUTOSCALER_MAX_NODES:-${NUM_MINIONS}}"
TARGET_NODE_UTILIZATION="${KUBE_TARGET_NODE_UTILIZATION:-0.7}"
fi
ADMISSION_CONTROL=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota
# Optional: if set to true kube-up will automatically check for existing resources and clean them up.

21
cluster/gce/util.sh
View File

@ -708,6 +708,18 @@ function kube-up {
detect-minion-names
detect-master
# Create autoscaler for nodes if requested
if [[ "${ENABLE_NODE_AUTOSCALER}" == "true" ]]; then
METRICS=""
METRICS+="--custom-metric-utilization metric=custom.cloudmonitoring.googleapis.com/kubernetes.io/cpu/node_utilization,"
METRICS+="utilization-target=${TARGET_NODE_UTILIZATION},utilization-target-type=GAUGE "
METRICS+="--custom-metric-utilization metric=custom.cloudmonitoring.googleapis.com/kubernetes.io/memory/node_utilization,"
METRICS+="utilization-target=${TARGET_NODE_UTILIZATION},utilization-target-type=GAUGE "
echo "Creating node autoscaler."
gcloud preview autoscaler --zone "${ZONE}" create "${NODE_INSTANCE_PREFIX}-autoscaler" --target "${NODE_INSTANCE_PREFIX}-group" \
--min-num-replicas "${AUTOSCALER_MIN_NODES}" --max-num-replicas "${AUTOSCALER_MAX_NODES}" ${METRICS} || true
fi
echo "Waiting for cluster initialization."
echo
echo " This will continually check to see if the API for kubernetes is reachable."
@ -769,6 +781,15 @@ function kube-down {
echo "Bringing down cluster"
set +e # Do not stop on error
# Delete autoscaler for nodes if present.
local autoscaler
autoscaler=( $(gcloud preview autoscaler --zone "${ZONE}" list \
| awk 'NR >= 2 { print $1 }' \
| grep "${NODE_INSTANCE_PREFIX}-autoscaler") )
if [[ "${autoscaler:-}" != "" ]]; then
gcloud preview autoscaler --zone "${ZONE}" delete "${NODE_INSTANCE_PREFIX}-autoscaler"
fi
# Get the name of the managed instance group template before we delete the
# managed instange group. (The name of the managed instnace group template may
# change during a cluster upgrade.)