MongoDB Database Installation & Setup Administrator password (separate MONGO, no replica set)

## Initial system environment, reference document: Server system environment initialization, Centos7 system

#mongodbDownload and Install

mkdir -p / server / src / server / logs
groupadd mongod
useradd -s / sbin / nologin -g mongod mongod
cat / etc / passwdgrep mongo
cd / server / src
   ## Install mongodb version 3.0.7. If other versions are required, download it from the official website https://fastdl.mongodb.org/linux/
wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-3.0.7.tgz
tar zxvf mongodb-linux-x86_64-rhel70-3.0.7.tgz
mv mongodb-linux-x86_64-rhel70-3.0.7 / usr / local / mongodb
mkdir -p / data / mongodb / db
mkdir / data / mongodb / log
touch /data/mongodb/log/mongo.log
chmod 644! $
chown -R mongod.mongod / data / mongodb
yum -y install tree
tree / data
vim /lib/systemd/system/mongod.service
[Unit]
Description = mongodb
After = network.target remote-fs.target nss-lookup.target
 
[Service]
Type = forking
PIDFile = / data / mongodb / db / mongod.lock
ExecStart = / usr / local / mongodb / bin / mongod --dbpath = / data / mongodb / db --logpath = / data / mongodb / log / mongo.log --fork --port 27017 --logappend --auth
ExecReload = / bin / kill -s HUP $ MAINPID
ExecStop = / bin / kill -s QUIT $ MAINPID
PrivateTmp = true
 
[Install]
WantedBy = multi-user.target
systemctl enable mongod.service
systemctl start mongod.service
ps aux | grep mongo | grep -v ‘grep’
systemctl status mongod.service
## mongo start process analysis
ps aux | grep mongo | grep -vE "cp2 | grep"
root 75815 0.1 0.1 658320 72384? Sl 17:50 0:08 / usr / local / mongodb / bin / mongod --dbpath = / data / mongodb / db --logpath = / data / mongodb / log / mongo.log- fork --port 27017 --logappend --auth
    ## parse
    #mongod is to start the mongodb service
    # -portmongodb port used at startup
    #-dbpath Specify a directory for the mongodb database storage path
    #-logpath Log file storage path
    #-logappend Log files are automatically accumulated instead of overwritten
    #-fork start Mongdb service in the background
    #-directoryperdb put each database in a separate directory
#Add mongo program to environment variables

echo "export PATH = / usr / local / mongodb / bin: $ PATH" >> / etc / profile
source! $
echo $ PATH
#Enter mongo

mongo ## The default login method, using the default port 27017 to start the mongo service, directly enter
mongo --port = 27027 ## Specify the port 27027 to start the mongo service, you need to add the port number to start
mongo 103.56.195.5:27017 ## Log in to the mongo service of the specified remote host. This can be used to test whether the peer firewall is open.
#Create an administrator account

use admin
db.createUser ({user: "mongo_admin", pwd: "xxx", roles: [{role: "root", db: "admin"}]})
db.auth (‘mongo_admin’, ‘xxx’)




mongodb database installation & set administrator password (mongo alone, no replica set)