feat(elk): add health checks for Elasticsearch and Kibana services

modules/elk/jobspec.nomad.hcl

@@ -127,6 +127,16 @@ job "elk" {
         provider = "consul"
         port     = "http"
 
+        check {
+          type            = "http"
+          protocol        = "https"
+          tls_skip_verify = true
+          port            = "web"
+          path            = "/_cluster/health?local=true"
+          interval        = "5s"
+          timeout         = "2s"
+        }
+
         tags = [
           "traefik.enable=true",
           "traefik.http.routers.es.rule=Host(`es.brmartin.co.uk`)",
@@ -364,6 +374,14 @@ job "elk" {
         port     = "web"
         provider = "consul"
 
+        check {
+          type     = "http"
+          port     = "web"
+          path     = "/api/status"
+          interval = "5s"
+          timeout  = "2s"
+        }
+
         tags = [
           "traefik.enable=true",
           "traefik.http.routers.kibana.rule=Host(`kibana.brmartin.co.uk`)",