diff --git a/prometheus-monitoring/alertmanager-config.yaml b/prometheus-monitoring/alertmanager-config.yaml
new file mode 100644
index 0000000..dd3e9d7
--- /dev/null
+++ b/prometheus-monitoring/alertmanager-config.yaml
@@ -0,0 +1,32 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: AlertmanagerConfig
+metadata:
+  name: config-example
+  labels:
+    alertmanagerConfig: example
+spec:
+  route:
+    groupBy: ['alertname', 'job']
+    groupWait: 30s
+    groupInterval: 1m
+    repeatInterval: 3h
+    receiver: 'slack-monitoring'
+  receivers:
+  - name: 'slack-monitoring'
+    slackConfigs:
+    - channel: '#devops-monitoring'
+      title: "K8S {{ range .Alerts }}{{ .Annotations.summary }}\n{{ end }}"
+      text: "K8S {{ range .Alerts }}{{ .Annotations.description }}\n{{ end }}"
+      sendResolved: true
+      apiURL:
+        name: 'slackapisecret'
+        key: 'url'
+
+---
+apiVersion: v1
+kind: Secret
+type: Opaque
+metadata:
+  name: slackapisecret
+stringData:
+  url: 'https://hooks.slack.com/services/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'
diff --git a/prometheus-monitoring/alertmanagerconfig.yaml b/prometheus-monitoring/alertmanagerconfig.yaml
new file mode 100644
index 0000000..7113a2a
--- /dev/null
+++ b/prometheus-monitoring/alertmanagerconfig.yaml
@@ -0,0 +1,30 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: AlertmanagerConfig
+metadata:
+  name: config-example
+  labels:
+    alertmanagerConfig: example
+spec:
+  route:
+    groupBy: ['job']
+    groupWait: 30s
+    groupInterval: 5m
+    repeatInterval: 12h
+    receiver: 'wechat-example'
+  receivers:
+  - name: 'wechat-example'
+    wechatConfigs:
+    - apiURL: 'http://wechatserver:8080/'
+      corpID: 'wechat-corpid'
+      apiSecret:
+        name: 'wechat-config'
+        key: 'apiSecret'
+
+---
+apiVersion: v1
+kind: Secret
+type: Opaque
+metadata:
+  name: wechat-config
+data:
+  apiSecret: d2VjaGF0LXNlY3JldAo=
diff --git a/prometheus-monitoring/prometheus-rule.yaml b/prometheus-monitoring/prometheus-rule.yaml
index a644846..a13f430 100644
--- a/prometheus-monitoring/prometheus-rule.yaml
+++ b/prometheus-monitoring/prometheus-rule.yaml
@@ -11,10 +11,10 @@ spec:
   - name: ./example.rules
     rules:
     - alert: RAMUsage
-      expr: (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) < 0.25
+      expr: (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) < 0.95
       for: 5m
       labels:
         severity: info
       annotations:
-        summary: "Server {{ $labels.instance }} has a less than 25% RAM available"
-        description: "Server {{ $labels.instance }} has only {{ $value }}% of its total amount of RAM available!"
+        summary: "K8SServerTest {{ $labels.instance }} has a less than 95% RAM available"
+        description: "K8SServerTest {{ $labels.instance }} has only {{ $value }}% of its total amount of RAM available!"