Multiple changes for linting warnings

+ propert handling of mongodb_version variable

Author: UnderGreen

README.md

@@ -70,9 +70,8 @@ mongodb_security_keyfile: /etc/mongodb-keyfile # Specify path to keyfile with pa
 mongodb_storage_dbpath: /data/db # Directory for datafiles
 mongodb_storage_dirperdb: false # Use one directory per DB
 
-# The storage engine for the mongod database. Available values:
-# 'mmapv1', 'wiredTiger'
-mongodb_storage_engine: "{{ 'mmapv1' if mongodb_version[0:3] == '3.0' else 'wiredTiger' }}"
+# The storage engine for the mongod database
+mongodb_storage_engine: "wiredTiger"
 # mmapv1 specific options
 mongodb_storage_quota_enforced: false # Limits each database to a certain number of files
 mongodb_storage_quota_maxfiles: 8 # Number of quota files per DB

defaults/main.yml

@@ -18,8 +18,8 @@ mongodb_manage_service: true
 mongodb_disable_transparent_hugepages: false
 
 mongodb_user: "{{ 'mongod' if ('RedHat' == ansible_os_family) else 'mongodb' }}"
-mongodb_uid:
-mongodb_gid:
+mongodb_uid: ""
+mongodb_gid: ""
 mongodb_daemon_name: "{{ 'mongod' if ('mongodb-org' in mongodb_package) else 'mongodb' }}"
 
 ## net Options
@@ -29,8 +29,8 @@ mongodb_net_ipv6: false                          # Enable IPv6 support (disabled
 mongodb_net_maxconns: 65536                      # Max number of simultaneous connections
 mongodb_net_port: 27017                          # Specify port number
 mongodb_net_ssl: disabled                        # Enable or disable ssl connections
-mongodb_net_ssl_mode:                            # Set the ssl mode (RequireSSL / preferSSL / AllowSSL / disabled)
-mongodb_net_ssl_pemfile:                         # Location of the pemfile to use for ssl
+mongodb_net_ssl_mode: ""                         # Set the ssl mode (RequireSSL / preferSSL / AllowSSL / disabled)
+mongodb_net_ssl_pemfile: ""                      # Location of the pemfile to use for ssl
 
 ## processManagement Options
 # Fork server process
@@ -46,8 +46,7 @@ mongodb_security_keyfile: /etc/mongodb-keyfile   # Specify path to keyfile with
 mongodb_storage_dbpath: /data/db                 # Directory for datafiles
 mongodb_storage_dirperdb: false                  # Use one directory per DB
 
-# The storage engine for the mongod database. Available values:
-# 'mmapv1', 'wiredTiger'
+# The storage engine for the mongod database
 mongodb_storage_engine: "wiredTiger"
 # mmapv1 specific options
 mongodb_storage_quota_enforced: false            # Limits each database to a certain number of files
@@ -66,7 +65,7 @@ mongodb_systemlog_logrotate: "rename"                                    # Logro
 mongodb_systemlog_path: /var/log/mongodb/{{ mongodb_daemon_name }}.log   # Log file to send write to instead of stdout
 
 ## replication Options
-mongodb_replication_replset:                      # Enable replication <setname>[/<optionalseedhostlist>]
+mongodb_replication_replset: ""                   # Enable replication
 mongodb_replication_replindexprefetch: "all"      # specify index prefetching behavior (if secondary) [none|_id_only|all]
 mongodb_replication_oplogsize: 1024               # specifies a maximum size in megabytes for the replication operation log
 

files/disable-transparent-hugepages.init

@@ -0,0 +1,21 @@
+[Unit]
+Description="Disable Transparent Hugepage before MongoDB boots"
+#WARN: check service name on your system
+# If you are using MongoDB Cloud, service name is "mongodb-mms-automation-agent.service"
+Before=mongodb.service
+
+[Service]
+Type=oneshot
+ExecStart=-/bin/bash -c 'echo never > /sys/kernel/mm/transparent_hugepage/enabled'
+ExecStart=-/bin/bash -c 'echo never > /sys/kernel/mm/transparent_hugepage/defrag'
+ExecStart=-/bin/bash -c 'echo never > /sys/kernel/mm/redhat_transparent_hugepage/enabled'
+ExecStart=-/bin/bash -c 'echo never > /sys/kernel/mm/redhat_transparent_hugepage/defrag'
+ExecStart=-/bin/bash -c 'echo 0 > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag'
+ExecStart=-/bin/bash -c 'echo 0 > /sys/kernel/mm/redhat_transparent_hugepage/khugepaged/defrag'
+ExecStart=-/bin/bash -c 'echo no > /sys/kernel/mm/transparent_hugepage/khugepaged/defrag'
+ExecStart=-/bin/bash -c 'echo no > /sys/kernel/mm/redhat_transparent_hugepage/khugepaged/defrag'
+
+[Install]
+#WARN: check service name on your system
+# If you are using MongoDB Cloud, service name is "mongodb-mms-automation-agent.service"
+RequiredBy=mongodb.service

files/disable-transparent-hugepages.service

@@ -1,5 +1,8 @@
 ---
 
+- debug:
+    msg: "{{ mongodb_replication_replset }}"
+
 - name: Create keyFile
   copy:
     dest: "{{ mongodb_security_keyfile }}"

tasks/configure.yml

@@ -1,22 +1,15 @@
-- name: Install disable transparent hugepages helper
+---
+- name: Create disable transparent hugepages systemd service file
   copy:
-    src: disable-transparent-hugepages.sh
-    dest: /opt/disable-transparent-hugepages.sh
-    owner: root
-    group: root
-    mode: 0700
-
-- name: Create disable transparent hugepages init file
-  copy:
-    src: disable-transparent-hugepages.init
-    dest: /etc/systemd/system/disable-transparent-hugepages.init
+    src: disable-transparent-hugepages.service
+    dest: /etc/systemd/system/disable-transparent-hugepages.service
     owner: root
     group: root
     mode: 0644
 
-- name: Enable init file
+- name: Enable disable-transparent-hugepages.service
   systemd:
     name: disable-transparent-hugepages
-    daemon-reload: yes
-    enabled: yes
+    daemon-reload: true
+    enabled: true
     state: started

tasks/disable_transparent_hugepages.yml

@@ -8,16 +8,19 @@
     src: mongodb.repo.j2
     dest: /etc/yum.repos.d/mongodb.repo
     mode: 0644
-  with_items: "{{ mongodb_version[0:3] }}"
+  with_items: "{{ mongodb_major_version }}"
   when: mongodb_package == 'mongodb-org'
 
-- name: Install MongoDB and numactl packages
+- name: Install MongoDB package
   yum:
-    name:
-      - "{{ mongodb_package }}"
-      - numactl
+    name: "{{ mongodb_package }}{% if (mongodb_version | length > 3) %}={{ mongodb_version }}{% endif %}"
     state: "{{ mongodb_package_state }}"
 
+- name: Install numactl package
+  yum:
+    name: numactl
+    state: present
+
 - name: Install PyMongo package
   yum:
     name: python-pymongo

tasks/install.amazon.yml

@@ -18,18 +18,17 @@
 - name: Fail when used wrong mongodb_version variable with Debian Stretch
   fail:
     msg: "mongodb_version variable should be '3.6' or '4.0' for Debian Stretch"
-  when: (mongodb_package == 'mongodb-org' and
-        (mongodb_version is not defined
-         or mongodb_repository[mongodb_major_version] is not defined
-         or (mongodb_version != '3.6' and mongodb_version != '4.0'))
-         and ansible_distribution_release == 'stretch')
+  when:
+    - mongodb_package == 'mongodb-org'
+    - (mongodb_major_version != '3.6' and mongodb_major_version != '4.0')
+    - ansible_distribution_release == 'stretch'
 
 - name: Fail when used wrong mongodb_version variable with Ubuntu 18.04
   fail:
     msg: "mongodb_version variable should be '4.0' or else mongodb_package should be 'mongodb' for Ubuntu 18.04"
   when:
     - mongodb_package == 'mongodb-org'
-    - mongodb_version != '4.0'
+    - mongodb_major_version != '4.0'
     - ansible_distribution_release == "bionic"
 
 - name: Fail when used wrong mongodb_version variable
@@ -42,20 +41,23 @@
 - name: Add APT repository
   apt_repository:
     repo: "{{ mongodb_repository[version_item] }}"
-    update_cache: yes
+    update_cache: true
   with_items: "{{ mongodb_major_version }}"
   loop_control:
     loop_var: version_item
   when: mongodb_package == 'mongodb-org'
 
-- name: Install MongoDB and numactl packages
+- name: Install MongoDB package
   apt:
-    name:
-      - "{{ mongodb_package }}"
-      - numactl
+    name: "{{ mongodb_package }}{% if (mongodb_version | length > 3) %}={{ mongodb_version }}{% endif %}"
     state: "{{ mongodb_package_state }}"
     update_cache: true
 
+- name: Install numactl package
+  apt:
+    name: numactl
+    state: present
+
 - name: Add systemd configuration if present
   copy: src=mongodb.service dest=/lib/systemd/system/mongodb.service owner=root group=root mode=0644
   when: ansible_service_mgr == "systemd"

tasks/install.debian.yml

@@ -14,16 +14,19 @@
     src: mongodb.repo.j2
     dest: /etc/yum.repos.d/mongodb.repo
     mode: 0644
-  with_items: "{{ mongodb_version[0:3] }}"
+  with_items: "{{ mongodb_major_version }}"
   when: mongodb_package == 'mongodb-org'
 
 - name: Install MongoDB package
   yum:
-    name:
-      - "{{ mongodb_package }}"
-      - numactl
+    name: "{{ mongodb_package }}{% if (mongodb_version | length > 3) %}={{ mongodb_version }}{% endif %}"
     state: "{{ mongodb_package_state }}"
 
+- name: Install numactl package
+  yum:
+    name: numactl
+    state: present
+
 - name: Install PyMongo package
   yum:
     name: python-pymongo

tasks/install.redhat.yml

@@ -27,7 +27,7 @@
 
 - name: Include replication configuration
   include: replication.yml
-  when: mongodb_replication_replset | lenght > 0
+  when: mongodb_replication_replset | length > 0
   tags: [mongodb]
 
 - name: Check where admin user already exists
@@ -101,13 +101,13 @@
     login_host: "{{ mongodb_login_host|default('localhost') }}"
   with_items:
     - "{{ mongodb_oplog_users | default([]) }}"
-  when: ( mongodb_replication_replset | lenght > 0
+  when: ( mongodb_replication_replset | length > 0
         and mongodb_security_authorization == 'enabled'
         and mongodb_master is defined and mongodb_master )
   no_log: false
   tags: [mongodb]
 
 - name: Include MMS Agent configuration
   include: mms-agent.yml
-  when: mongodb_mms_api_key | lenght > 0
+  when: mongodb_mms_api_key | length > 0
   tags: [mongodb]