feat: add configuration variable to limit mongors available memory (c…

…lose #221)

.env.default

@@ -118,6 +118,7 @@ MONGORS_IMAGE=mongo
 MONGORS_TAG=3.6.5
 MONGORS_NAME=mongors
 MONGORS_VOLUME_PATH=
+MONGORS_MEMORY_LIMIT=
 
 # OpenAQ
 OPENAQ_IMAGE=kalisio/k-openaq

deploy/mongors.yml.tpl

@@ -16,6 +16,9 @@ services:
          - node.labels.${MONGORS_NAME}0 == true
       restart_policy:
         condition: on-failure
+      resources:
+        limits:
+          memory: ${MONGORS_MEMORY_LIMIT}
     networks:
       - kargo-back-network
 
@@ -34,6 +37,9 @@ services:
           - node.labels.${MONGORS_NAME}1 == true
       restart_policy:
         condition: on-failure
+      resources:
+        limits:
+          memory: ${MONGORS_MEMORY_LIMIT}
     networks:
       - kargo-back-network
 
@@ -52,6 +58,9 @@ services:
           - node.labels.${MONGORS_NAME}2 == true
       restart_policy:
         condition: on-failure
+      resources:
+        limits:
+          memory: ${MONGORS_MEMORY_LIMIT}
     networks:
       - kargo-back-network
 

deploy/mongors_before.sh

@@ -1,3 +1,8 @@
 #!/bin/bash
 
-envsubst '${MONGORS_NAME}' < deploy/mongors.yml.tpl > deploy/mongors.yml
+if [ -z "${MONGORS_MEMORY_LIMIT}" ]; then
+  echo [mongors] MONGORS_MEMORY_LIMIT variable is mandatory but is not set, stopping now.
+  exit 1
+fi
+
+envsubst '${MONGORS_NAME}' < deploy/mongors.yml.tpl > deploy/mongors.yml