add tab for monthly costs per cluster

ui/operator_ui/main.py

@@ -84,6 +84,13 @@ SUPERUSER_TEAM = getenv('SUPERUSER_TEAM', 'acid')
 TARGET_NAMESPACE = getenv('TARGET_NAMESPACE')
 GOOGLE_ANALYTICS = getenv('GOOGLE_ANALYTICS', False)
 
+# storage pricing, i.e. https://aws.amazon.com/ebs/pricing/
+COST_EBS = float(getenv('COST_EBS', 0.119))  # GB per month
+
+# compute costs, i.e. https://www.ec2instances.info/?region=eu-central-1&selected=m5.2xlarge
+COST_CORE = 30.5 * 24 * float(getenv('COST_CORE', 0.0575))  # Core per hour m5.2xlarge / 8.
+COST_MEMORY = 30.5 * 24 * float(getenv('COST_MEMORY', 0.014375))  # Memory GB m5.2xlarge / 32.
+
 WALE_S3_ENDPOINT = getenv(
     'WALE_S3_ENDPOINT',
     'https+path://s3-eu-central-1.amazonaws.com:443',
@@ -293,6 +300,9 @@ DEFAULT_UI_CONFIG = {
     'dns_format_string': '{0}.{1}.{2}',
     'pgui_link': '',
     'static_network_whitelist': {},
+    'cost_ebs': COST_EBS,
+    'cost_core': COST_CORE,
+    'cost_memory': COST_MEMORY
 }