1. add task delete mrzcpd memory.conf and uninstall redis

2. modify stop telegraf_collect to delete telegraf_collect file

tasks/remove_mrzcpd_system_edit.yml

@@ -0,0 +1,9 @@
+- hosts:
+    - adc_mcn0
+    - adc_mcn1
+    - adc_mcn2
+    - adc_mcn3
+  remote_user: root
+  tasks:
+    - name: 'remove mrzcpd system edit memory config'
+      shell: rm /etc/systemd/system/mrzcpd.service.d/memory.conf

tasks/stop_telegraf_collect.yml

@@ -10,3 +10,6 @@
         name: telegraf_collect
         state: stopped
         enabled: no
+
+    - name: 'telegraf_collect config file and service file'
+      shell: rm /etc/telegraf/telegraf_collect.conf; rm /usr/lib/systemd/system/telegraf_collect.service; systemctl daemon-reload

tasks/uninstall_redis40u.yml

@@ -0,0 +1,14 @@
+- hosts: adc_mcn3
+  remote_user: root
+  tasks:
+    - name: 'redis service stop'
+      systemd:
+        name: redis
+        enabled: no
+        daemon_reload: yes
+        state: stopped
+        
+    - name: remove the redis40u
+      yum:
+        name: redis40u
+        state: absent