sap_hana_preconfigure: Ensure the absence of two NetApp NFS parameters

... in file __sap_hana_preconfigure_etc_sysctl_saphana_conf. Solves issue sap-linuxlab#814. Signed-off-by: Bernd Finger <[email protected]>
berndfinger · Jul 19, 2024 · 6b962bf · 6b962bf
1 parent 6e766fa
commit 6b962bf
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/roles/sap_hana_preconfigure/tasks/sapnote/3024346.yml b/roles/sap_hana_preconfigure/tasks/sapnote/3024346.yml
@@ -25,6 +25,22 @@
       loop_control:
         loop_var: line_item
 
+# Due to sysctl config file precedence rules, it can happen that previous entries in
+# __sap_hana_preconfigure_etc_sysctl_saphana_conf remain in effect even after setting
+# different parameter values in __sap_hana_preconfigure_etc_sysctl_netapp_hana_conf.
+# So we have to ensure that those duplicate entries are not present.
+# See also https://github.com/sap-linuxlab/community.sap_install/issues/196.
+    - name: Ensure kernel tunables for NetApp NFS are not in file '{{ __sap_hana_preconfigure_etc_sysctl_saphana_conf }}'
+      ansible.builtin.lineinfile:
+        path: "{{ __sap_hana_preconfigure_etc_sysctl_saphana_conf }}"
+        regexp: ^{{ line_item }}
+        state: absent
+      with_items:
+        - 'net.core.wmem_max'
+        - 'net.core.rmem_max'
+      loop_control:
+        loop_var: line_item
+
 # Note: The sole purpose of the following two tasks is to collect the current value(s) of the kernel parameters
 # in __sap_hana_preconfigure_etc_sysctl_netapp_hana_conf so that the "Reload kernel parameters from file ..." task
 # can correctly report its 'changed' state. See also https://github.com/sap-linuxlab/community.sap_install/issues/752 .