From b785ad9759e00d3ccb7bacef66f3e7884fd38082 Mon Sep 17 00:00:00 2001
From: dummy-head <damnbunny@hotmail.com>
Date: Wed, 29 Nov 2017 23:53:17 -0800
Subject: [PATCH] Reserved memory for captain and nginx as we don't every want
 them OOM

---
 app-backend/src/docker/DockerApi.js         | 14 ++++++++++++--
 app-backend/src/user/LoadBalancerManager.js |  8 ++++++--
 app-backend/src/utils/CaptainInstaller.js   |  6 +++++-
 3 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/app-backend/src/docker/DockerApi.js b/app-backend/src/docker/DockerApi.js
index 7a504ee..d91f894 100644
--- a/app-backend/src/docker/DockerApi.js
+++ b/app-backend/src/docker/DockerApi.js
@@ -415,8 +415,15 @@ class DockerApi {
      *        value: 'some value'
      *    }
      * ]
+     * @param resourcesObject:
+     * [
+     *    {
+     *        Limits:      {   NanoCPUs	, MemoryBytes}
+     *        Reservation: {   NanoCPUs	, MemoryBytes}
+     *
+     * ]
      */
-    createServiceOnNodeId(imageName, serviceName, portsToMap, nodeId, volumeToMount, arrayOfEnvKeyAndValue) {
+    createServiceOnNodeId(imageName, serviceName, portsToMap, nodeId, volumeToMount, arrayOfEnvKeyAndValue, resourcesObject) {
 
         const self = this;
 
@@ -437,6 +444,7 @@ class DockerApi {
                 ContainerSpec: {
                     Image: imageName
                 },
+                Resources: resourcesObject,
                 Placement: {
                     Constraints: nodeId ? ['node.id == ' + nodeId] : []
                 }
@@ -875,6 +883,8 @@ class DockerApi {
      *    }
      * ]
      * @param instanceCount: String '12' or null
+     * @param nodeId: nodeId of the node this service will be locked to or null
+     * @param namespace: String 'captain' or null
      * @returns {Promise.<>}
      */
     updateService(serviceName, imageName, volumes, networks, arrayOfEnvKeyAndValue, secrets, authObject, instanceCount, nodeId, namespace) {
@@ -942,7 +952,7 @@ class DockerApi {
                             // named volumes are created here:
                             // /var/lib/docker/volumes/YOUR_VOLUME_NAME/_data
                             mts.push({
-                                Source: (namespace ? (namespace + '--' ) : '' ) + v.volumeName,
+                                Source: (namespace ? (namespace + '--') : '') + v.volumeName,
                                 Target: v.containerPath,
                                 Type: TYPE_VOLUME,
                                 ReadOnly: false
diff --git a/app-backend/src/user/LoadBalancerManager.js b/app-backend/src/user/LoadBalancerManager.js
index 8595816..2210c32 100644
--- a/app-backend/src/user/LoadBalancerManager.js
+++ b/app-backend/src/user/LoadBalancerManager.js
@@ -251,7 +251,7 @@ class LoadBalancerManager {
 
     }
 
-    ensureBaseNginxConf(){
+    ensureBaseNginxConf() {
         return Promise.resolve()
             .then(function () {
 
@@ -280,7 +280,11 @@ class LoadBalancerManager {
             }, {
                 containerPort: 443,
                 hostPort: 443
-            }], nodeId)
+            }], nodeId, null, null, {
+                Reservation: {
+                    MemoryBytes: 30 * 1024 * 1024
+                }
+            })
                 .then(function () {
 
                     let waitTimeInMillis = 5000;
diff --git a/app-backend/src/utils/CaptainInstaller.js b/app-backend/src/utils/CaptainInstaller.js
index 927d676..2cb040e 100644
--- a/app-backend/src/utils/CaptainInstaller.js
+++ b/app-backend/src/utils/CaptainInstaller.js
@@ -111,7 +111,11 @@ module.exports.install = function () {
             });
 
             return DockerApi.get().createServiceOnNodeId(captainNameAndVersion,
-                CaptainConstants.captainServiceName, ports, nodeId, volumeToMount, env);
+                CaptainConstants.captainServiceName, ports, nodeId, volumeToMount, env, {
+                    Reservation: {
+                        MemoryBytes: 100 * 1024 * 1024
+                    }
+                });
 
         })
         .catch(function (error) {