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Rolling node upgrade

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This commit is contained in:
Max Forbes
2015-05-07 17:41:22 -07:00
parent b963307496
commit 3437ac691a
4 changed files with 87 additions and 11 deletions
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15
cluster/gce/util.sh
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@@ -383,6 +383,16 @@ function create-firewall-rule {
# $4: The kube-env metadata.
function create-node-template {
detect-project
# First, ensure the template doesn't exist.
# TODO(mbforbes): To make this really robust, we need to parse the output and
# add retries. Just relying on a non-zero exit code doesn't
# distinguish an ephemeral failed call from a "not-exists".
if gcloud compute instance-templates describe "$1"; then
echo "Instance template ${1} already exists; continuing." >&2
return
fi
local attempt=0
while true; do
if ! gcloud compute instance-templates create "$1" \
@@ -398,10 +408,10 @@ function create-node-template {
--can-ip-forward \
--metadata-from-file "$3" "$4"; then
if (( attempt > 5 )); then
echo -e "${color_red}Failed to create instance template $1 ${color_norm}"
echo -e "${color_red}Failed to create instance template $1 ${color_norm}" >&2
exit 2
fi
echo -e "${color_yellow}Attempt $(($attempt+1)) failed to create instance template $1. Retrying.${color_norm}"
echo -e "${color_yellow}Attempt $(($attempt+1)) failed to create instance template $1. Retrying.${color_norm}" >&2
attempt=$(($attempt+1))
else
break
@@ -624,6 +634,7 @@ function kube-up {
echo "Creating minions."
# TODO(mbforbes): Refactor setting scope flags.
local -a scope_flags=()
if (( "${#MINION_SCOPES[@]}" > 0 )); then
scope_flags=("--scopes" "${MINION_SCOPES[@]}")