chore(node-red): add rolling updates and install pre-task to node-red…

… job

Signed-off-by: Bruce Becker <[email protected]>

node-red.nomad

@@ -1,6 +1,12 @@
 job "nodered" {
   datacenters = ["dc1"]
-
+  update {
+    max_parallel = 2
+    health_check = "checks"
+    canary = 1
+    auto_promote = true
+    auto_revert = true
+  }
   group "automation" {
     count = 1
 
@@ -28,16 +34,65 @@ job "nodered" {
       }
     }
 
-    task "nodered_server" {
+    task "install" {
       driver = "raw_exec"
+      lifecycle {
+        hook = "prestart"
+      }
+      env {
+        XDG_CONFIG_HOME = "${NOMAD_ALLOC_DIR}"
+      }
+      template {
+        data = <<EOT
+#!/bin/bash
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
+echo ${XDG_CONFIG_HOME}
+pwd
+ls -lht
+source ${XDG_CONFIG_HOME}/nvm/nvm.sh
+nvm install --lts 16
+nvm use 16
+npm install -g --unsafe-perm node-red
+EOT
+        destination = "install.sh"
+        perms = "0755"
+      }
+      config {
+        command = "/bin/bash"
+        args = ["install.sh"]
+      }
 
       resources {
-        cores  = 2
-        memory = 800
+        cpu  = 1000
+        memory = 256
+        memory_max = 512
       }
+    } // install task
 
+    task "nodered" {
+      driver = "raw_exec"
+      env {
+        XDG_CONFIG_HOME = "${NOMAD_ALLOC_DIR}"
+      }
+      template {
+        destination = "run.sh"
+        data = <<EOT
+#!/bin/bash
+source ${XDG_CONFIG_HOME}/nvm/nvm.sh
+nvm use 16
+node-red-pi --max-old-space-size=256
+EOT
+        perms = "0755"
+      }
       config {
-        command = "node-red"
+        command = "/bin/bash"
+        args = ["run.sh"]
+      }
+
+      resources {
+        cores = 2
+        memory = 1024
+        memory_max = 2048
       }
     }
   }