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nomad/enos/modules/upgrade_client/scripts/verify_metadata.sh

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#!/usr/bin/env bash
# Copyright (c) HashiCorp, Inc.
# SPDX-License-Identifier: BUSL-1.1
set -euo pipefail
error_exit() {
printf 'Error: %s' "${1}"
exit 1
}
MAX_WAIT_TIME=60 # Maximum wait time in seconds
POLL_INTERVAL=2 # Interval between status checks
elapsed_time=0
last_error=
client_id=
checkClientReady() {
local client client_status
echo "Checking client health for $CLIENT_IP"
client=$(nomad node status -address "https://$CLIENT_IP:4646" -self -json) || {
last_error="Unable to get info for node at $CLIENT_IP"
return 1
}
client_status=$(echo "$client" | jq -r '.Status')
if [ "$client_status" == "ready" ]; then
client_id=$(echo "$client" | jq '.ID' | tr -d '"')
last_error=
return 0
fi
last_error="Node at $CLIENT_IP is ${client_status}, not ready"
return 1
}
while true; do
checkClientReady && break
if [ "$elapsed_time" -ge "$MAX_WAIT_TIME" ]; then
error_exit "$last_error within $elapsed_time seconds."
fi
echo "$last_error within $elapsed_time seconds. Retrying in $POLL_INTERVAL seconds..."
sleep "$POLL_INTERVAL"
elapsed_time=$((elapsed_time + POLL_INTERVAL))
done
echo "Client $client_id at $CLIENT_IP is ready"
# Quality: "nomad_node_metadata: A GET call to /v1/node/:node-id returns the same node.Meta for each node before and after a node upgrade"
echo "Reading metadata for client at $CLIENT_IP"
if ! client_meta=$(nomad node meta read -json -node-id "$client_id"); then
error_exit "Failed to read metadata for node: $client_id"
fi
meta_node_ip=$(echo "$client_meta" | jq -r '.Dynamic.node_ip' )
if [ "$meta_node_ip" != "$CLIENT_IP" ]; then
error_exit "Wrong value returned for node_ip: $meta_node_ip"
fi
meta_nomad_addr=$(echo "$client_meta" | jq -r '.Dynamic.nomad_addr' )
if [ "$meta_nomad_addr" != "$NOMAD_ADDR" ]; then
error_exit "Wrong value returned for nomad_addr: $meta_nomad_addr"
fi
echo "Metadata correct in $client_id at $CLIENT_IP"