Centos7 uses Yum source to install mongodb version 4.2 database

Centos7 uses Yum source to install mongodb version 4.2 database

This month is also built with reference to official documents

https://docs.mongodb.com/manual/tutorial/install-mongodb-on-red-hat/#configure-the-package-management-system-yum

Formal operation

vi /etc/yum.repos.d/mongodb-org-4.2.repo

Add the following information to the file

[mongodb-org-4.2] name=MongoDB Repository baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/4.2/x86_64/ gpgcheck=1 enabled=1 gpgkey=https://www.mongodb.org/static/pgp/server-4.2.asc

yum install mongodb-org -y

This operation will take a certain time, when the execution is completed

Use the following command to enter the client

mongo

exmple: the command to operate mongo is as follows (on, off, start, view status)

Start Mongo by executing systemctl start mongod command

systemctl status mongod #The following message indicates mongo is on ● mongod.service - MongoDB Database Server Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabled) Active: active (running) since Fri 2020-01-17 19:37:33 CST; 5s ago Docs: https://docs.mongodb.org/manual Process: 18740 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=0/SUCCESS) Process: 18738 ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb (code=exited, status=0/SUCCESS) Process: 18734 ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb (code=exited, status=0/SUCCESS) Process: 18733 ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb (code=exited, status=0/SUCCESS) Main PID: 18743 (mongod) CGroup: /system.slice/mongod.service └─18743 /usr/bin/mongod -f /etc/mongod.conf

View mongo logs

more /var/log/mongodb/mongod.log

If the error code code=14 appears after startup or in the log, it means that Mongo has been installed on the server before, but the data has not been completely cleared

Solution command: (clear the previous file and start from)

cd /tmp rm -rf mongodb-27017.sock systemctl restart mongod

First, close the mongo Library (the configuration file was not modified at the time of previous startup)

systemctl stop mongod

Enter mongo configuration file

cd /etc/ ll vim mongo.conf

If there is no vim command, you can install it with the following command

sudo yum install -y vim

Modify the file to the following location (change 127.0.0.1 to 0.0.0.0)

# network interfaces net: port: 27017 bindIp: 127.0.0.1 # Enter 0.0.0.0,:: to bind to all IPv4 and IPv6 addresses or, alternatively, use the net.bindIpAll setting.

Exit after saving

It is better to use firewall for cenos7

If not, install with the following command

yum install firewalld firewalld-config

Check whether the firewall is on

firewall-cmd --state

If it is not turned on and it is determined that it is not necessary to turn on, skip the following

View the list of open firewall ports

firewall-cmd --permanent --list-port

If there is no 27017 port, open it

firewall-cmd --zone=public --add-port=27017/tcp --permanent firewall-cmd --zone=public --add-port=27017/udp --permanent

service iptables restart

firewall-cmd --reload

If it is a ECs, you need to add the 27017 port configuration to the security group configuration

systemctl start mongod

Check whether it is on

systemctl status mongod netstat -untlp

Using navicat12 or studio3T connection test

So far, the Mongodb database without password has been set up

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17 January 2020, 08:08 | Views: 4216