1. Installation dependencies
yum install libcurl openssl xz-libs2. Download the installation package
The installation package download address 
https://www.mongodb.com/try/download/community Here I choose
The reason for choosing the RedHat/CentOS 7.0 platform is that my operating system uses CentOS 7.0, and I need to download the installation package that matches the operating system
3. Unzip and install
My compressed package is placed in the /opt directory
tar -zxvf mongodb-linux-x86_64-rhel70-6.0.6.tgzThere are two ways to add binary files to environment variables:
1. Copy the binary file to the /usr/local/bin directory
cp /opt/mongodb-linux-x86_64-rhel70-6.0.6/bin/* /usr/local/bin/2. Create a soft link pointing to the binary file in the /usr/local/bin directory
ln -s /opt/mongodb-linux-x86_64-rhel70-6.0.6/bin/* /usr/local/bin/The effect of establishing a soft link is as follows:
4. Install MongoDB Shell
Installation package download address https://www.mongodb.com/try/download/shell
Here I choose
After the download is complete, unzip it:
tar -zxvf mongosh-1.8.2-linux-x64.tgzThere are two ways to add binary files to environment variables:
1. Copy the binary file to the /usr/local/bin directory
cp /opt/mongosh-1.8.2-linux-x64/bin/mongosh /usr/local/bin/
cp /opt/mongosh-1.8.2-linux-x64/bin/mongosh_crypt_v1.so /usr/local/lib/2. Create a soft link pointing to the binary file in the /usr/local/bin directory
ln -s /opt/mongosh-1.8.2-linux-x64/bin/* /usr/local/bin/5. Run MongoDB
1. Create the data storage path and log path of MongoDB
mkdir -p /var/lib/mongo
mkdir -p /var/log/mongodb
2. Start MongoDB
mongod --dbpath /var/lib/mongo --logpath /var/log/mongodb/mongod.log --fork--dbpath specifies the data storage path
--logpath specifies the log file path
--fork refers to running the Mongo process in the background
3. Connect to MongoDB
mongosh6. Reasons for installation failure
An error is reported at startup: Illegal instruction, there may be the following reasons:
1. The gcc version is too low, you need to upgrade the gcc version, you can refer to:
2. MongoDB 5.0 and later versions need to use the AVX instruction set, you need to check whether the CPU supports the AVX instruction set
cat /proc/cpuinfo | grep avx