Merge pull request #546 from dheren-git/scale-hdfs-512

SLES,UBUNTU not supported validation added in HDFS precheck

Author: rajan-mis

roles/scale_hdfs/README.md

@@ -6,6 +6,15 @@ Role Definition
   - It allows computers connected to the same network or domain to access files from other local computers as easily as if they 
   were on the computer's local hard drive.
 
+OS/Arch Support:
+---------------------------
+- Arch : 
+   -1: x86
+   -2: PowerLe
+- OS   :
+   -1: RHEL7
+   -2: RHEL8
+
 Prerequisite
 ----------------------------
 - CES should be enabled and configured.
@@ -61,11 +70,11 @@ Implementation
     -	If  ‘scale_install_repository_url’ is undefined and ‘scale_install_remotepkg_path’ is defined, then the installation method is remote.
     -	If  ‘scale_install_repository_url’ is undefined and ‘scale_install_remotepkg_path’ is undefined and ‘scale_install_localpkg_path’ is defined, then the installation method is local.
   - Depending on the installation method, appropriate playbook is called for collecting the rpms and rpms are installed on all the nodes on which hdfs is enabled. 
-  
+
 - `Cluster`
   - This role setup all hdfs required configurations.
   - To enable hdfs protocol, we run command `mmces service enable hdfs` on all the nodes where hdfs is enabled.
-  
+
 - `Postcheck`
   - This role verify namenodes and datanodes status.
   - This role uses command `mmces service list` to check if hdfs service is up and running.

roles/scale_hdfs/node/tasks/install.yml

@@ -103,12 +103,5 @@
 
 - include_tasks: install_{{ scale_installmethod }}.yml
 
-#- import_tasks: apt/install.yml
-  #when: ansible_distribution in scale_ubuntu_distribution
-
 - import_tasks: yum/install.yml
   when: ansible_distribution in scale_rhel_distribution
-
-#- import_tasks: zypper/install.yml
-  #when: ansible_distribution in scale_sles_distribution
-

roles/scale_hdfs/node/vars/main.yml

@@ -8,3 +8,4 @@ scale_install_all_packages: gpfs.hdfs-protocol
 ## Default scale extraction path
 scale_extracted_default_path: "/usr/lpp/mmfs"
 scale_extracted_path: "{{ scale_extracted_default_path }}/{{ scale_version }}"
+

roles/scale_hdfs/precheck/tasks/check.yml

@@ -38,7 +38,13 @@
      server: "{{ scale_hdfs_cluster.namenodes[0] }}"
   delegate_to: localhost
   run_once: true
- 
+
+- fail:
+    msg: "HDFS is not supported on {{ ansible_distribution }} OS."
+  when: ansible_distribution not in hdfs_os_distribution
+  delegate_to: "{{ server }}"
+  run_once: true
+
 - name: check | verify cesip address
   set_fact:
      export_cesip_length: "{{ scale_protocols.export_ip_pool| length }}"

roles/scale_hdfs/precheck/vars/main.yml

@@ -1,2 +1,6 @@
 ---
 # vars file for precheck
+## Supported HDFS os distrubution
+hdfs_os_distribution:
+  - RedHat
+  - CentOS

roles/scale_hdfs/upgrade/tasks/upgrade.yml

@@ -59,11 +59,5 @@
 
 - include_tasks: upgrade_{{ scale_installmethod }}.yml
 
-#- import_tasks: apt/upgrade.yml
-  #when: ansible_distribution in scale_ubuntu_distribution
-
 - import_tasks: yum/upgrade.yml
   when: ansible_distribution in scale_rhel_distribution
-
-#- import_tasks: zypper/upgrade.yml
-  #when: ansible_distribution in scale_sles_distribution