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--- mongo_upgrade_logical [2019/09/16 10:36] – created andonovj
+++ mongo_upgrade_logical [2019/10/25 23:28] (current) – external edit 127.0.0.1
@@ Line 80: / Line 80: @@
 </sxh>
+=====Instance Modifcations=====
+There are couple changes to be done in order to secure our databases:
+====Change the IP====
+In order to change the IP, modify the /etc/mongod.conf file as so:
+<sxh bash>
+# network interfaces
+net:
+  port: 27017
+  bindIp: 172.27.1.245  # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.
+</sxh>
+Restart the instance with:
+<sxh bash>
+[root@hostname hunter_dev]# service mongod restart
+Redirecting to /bin/systemctl restart mongod.service
+</sxh>
+====Add users====
+Users have to be added so we can enable security authentication:
+<sxh bash>
+[root@tbp-cx-mdb01 hunter_dev]# mongo 172.27.1.245
+MongoDB shell version v4.0.13
+connecting to: mongodb://172.27.1.245:27017/test?gssapiServiceName=mongodb
+Implicit session: session { "id" : UUID("4c9e2e3d-4224-4731-89ad-3a2cca29110a") }
+MongoDB server version: 4.0.13
+Server has startup warnings:
+-10-25T15:48:26.654+0200 I STORAGE  [initandlisten]
+-10-25T15:48:26.655+0200 I STORAGE  [initandlisten] ** WARNING: Support for MMAPV1 storage engine has been deprecated and will be
+-10-25T15:48:26.655+0200 I STORAGE  [initandlisten] **          removed in version 4.2. Please plan to migrate to the wiredTiger
+-10-25T15:48:26.655+0200 I STORAGE  [initandlisten] **          storage engine.
+-10-25T15:48:26.655+0200 I STORAGE  [initandlisten]
+-10-25T15:48:26.662+0200 I STORAGE  [initandlisten]
+-10-25T15:48:26.662+0200 I STORAGE  [initandlisten] ** WARNING: Readahead for /var/lib/mongo is set to 4096KB
+-10-25T15:48:26.662+0200 I STORAGE  [initandlisten] **          We suggest setting it to 256KB (512 sectors) or less
+-10-25T15:48:26.662+0200 I STORAGE  [initandlisten] **          http://dochub.mongodb.org/core/readahead
+-10-25T15:48:27.012+0200 I CONTROL  [initandlisten]
+-10-25T15:48:27.012+0200 I CONTROL  [initandlisten] ** WARNING: Access control is not enabled for the database.
+-10-25T15:48:27.012+0200 I CONTROL  [initandlisten] **          Read and write access to data and configuration is unrestricted.
+-10-25T15:48:27.012+0200 I CONTROL  [initandlisten]
+-10-25T15:48:27.013+0200 I CONTROL  [initandlisten]
+-10-25T15:48:27.013+0200 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
+-10-25T15:48:27.013+0200 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
+-10-25T15:48:27.013+0200 I CONTROL  [initandlisten]
+-10-25T15:48:27.013+0200 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
+-10-25T15:48:27.013+0200 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
+-10-25T15:48:27.013+0200 I CONTROL  [initandlisten]
+---
+Enable MongoDB's free cloud-based monitoring service, which will then receive and display
+metrics about your deployment (disk utilization, CPU, operation statistics, etc).
+The monitoring data will be available on a MongoDB website with a unique URL accessible to you
+and anyone you share the URL with. MongoDB may use this information to make product
+improvements and to suggest MongoDB products and deployment options to you.
+To enable free monitoring, run the following command: db.enableFreeMonitoring()
+To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
+---
+> use admin
+switched to db admin
+> db.createUser(
+...  {
+...        "user" : "adminDBA",
+...        pwd: "3kHq9mNqMcxIDITbbEEq",
+...         "roles" : [
+...                 {
+...                         "role" : "userAdminAnyDatabase",
+...                         "db" : "admin"
+...                 },
+...                 {
+...                         "role" : "root",
+...                         "db" : "admin"
+...                 },
+...                 {
+...                         "role" : "dbOwner",
+...                         "db" : "admin"
+...                 },
+...                 {
+...                         "role" : "userAdmin",
+...                         "db" : "admin"
+...                 }
+...         ]
+... }
+... )
+</sxh>
+====Enable security====
+Secure authentication has to be enabled again in the /etc/mongod.conf as follows:
+<sxh bash>
+security:
+  authorization: enabled
+</sxh>
+Again restart the service:
+<sxh bash>
+[root@hostname hunter_dev]# service mongod restart
+Redirecting to /bin/systemctl restart mongod.service
+[root@hostname hunter_dev]#
+</sxh>
+=====Import the backup into the new release=====
+After that, we can simply import the exported data into the new release as follows:
+<sxh bash>
+[root@hostname hunter_dev]# mongorestore --host 172.27.1.245 -u adminDBA -p 'password' --port 27017  /root/backup/10-25-19/
+-10-25T16:15:55.813+0200    preparing collections to restore from
+-10-25T16:15:55.855+0200    reading metadata for hunter_dev.livefishs.rar.chunks from /root/backup/10-25-19/hunter_dev/livefishs.rar.chunks.metadata.json
+-10-25T16:15:55.879+0200    reading metadata for monitor.config from /root/backup/10-25-19/monitor/config.metadata.json
+------------------------------------------------------------------------------
+-10-25T16:15:58.564+0200    finished restoring hunter_dev.billFish (0 documents)
+-10-25T16:15:58.564+0200    restoring users from /root/backup/10-25-19/admin/system.users.bson
+-10-25T16:15:58.638+0200    done
+</sxh>