We started setting up the OpenHAB cloud server locally, and the instructions we had found omitted a few important steps. They say ‘install redis’ and ‘install mongodb’ without providing any sort of post-install configuration.

Redis
# This is optional – if you don’t set a password, you’ll just get a warning on launch that a password was supplied but none is required. While the service is, by default, bound to localhost … I still put a password on everything just to be safe

vi /etc/redis.conf # Your path may vary, this is Fedora. I've seen /etc/redis/redis.conf too

# Find the requirepass line and make one with your password

480 # requirepass foobared
requirepass Y0|_|RP@s5w0rdG03s|-|3re

# Restart redis

service redis restart

Mongo:
# Install mongo (dnf install mongo mongo-server)
# start mongodb

service mongod start

# launch mongo client

mongo

# Create user in admin database

db.createUser({user: "yourDBUser", pwd: "yourDBUserPassword", roles: [{role: userAdminAnyDatabase", db: "admin"}]});
exit

# Modify mongodb server config to use security

vi /etc/mongod.conf

# remove remarkes before ‘security: ‘ and ‘authorization’ – set authorization to enabled:

99 # secutiry Options - Authorization and other security settings
100 security:
101 # Private key for cluster authentication
102 #keyFile: <string>
103
104 # Run with/without security (enabled|disabled, disabled by default)
105 authorization: enabled

# restart mongo

service mongod restart

#Launch mongo client supplying username and connecting to the admin database

mongo -uyourDBUser -p admin

# it will connect and prompt for password – you can use db.getUser to verify the account (but you just logged into it, so that’s a bit redundant)

MongoDB shell version: 3.2.12
Enter password:
connecting to: admin
> > db.getUser("yourDBUser");
{
        "_id" : "admin.yourDBUser",
        "user" : "yourDBUser",
        "db" : "admin",
        "roles" : [
                {
                        "role" : "userAdminAnyDatabase",
                        "db" : "admin"
                }
        ]
}

# Create the openhab database — mongo is a bit odd in that “use dbname” will switch context to that database if it exists *and* create the databse if it doesn’t exist. Bad for typo-prone types!

use yourDBName;

# Create the user in the openhab database

db.createUser({user: "yourDBUser", pwd: "yourDBUserPassword", roles: [{role: readWrite", db: "yourDBName"}]});

# You can use get user to verify it works

db.getUser("yourDBUser");
exit

# Now you can launch the mongo client connecting to the openhab database:

mongo -uyourDBUser -p yourDBName

# It will prompt for password and connect. At this point, you can use “node app.js” to launch the openhab cloud connector. Provided yourDBUser, yourDBUserPassword, and yourDBName match what you’ve used in the config file … it’ll connect and create a bunch of stuff