Mongodb installation & Deployment

1、rpm Package installation

1） seek yum Source

First, find some domestic open source image stations （ Here choose the open source mirror station of Tsinghua University ）

Find from MongoDB

Click in and choose yum

Select the desired version below （ Check here 4.4）

Copy url link （ Write for later yum Source preparation ）【https://mirrors.tuna.tsinghua.edu.cn/mongodb/yum/el7-4.4/】

2） To configure MongoDB Of yum Source file

[[email protected] ~]# vim /etc/yum.repos.d/mongodb.repo
// If red hat is configured Linux Of yum Source , You should understand the purpose of this step 
[mongodb]
name=mongodb	//yum The name of the source （ The suggestion is the same as the title above ）
baseurl=https://mirrors.tuna.tsinghua.edu.cn/mongodb/yum/el7-4.4/
// here url Select the one just copied above url
gpgcheck=0		// Indicates that the signature information is not checked 

3） see MongoDB Installation package （ confirm yum Is the source available ）

[[email protected] ~]# yum list | grep mongo
mongodb-database-tools.x86_64             100.5.2-1                    @mongodb 
mongodb-org.x86_64                        4.4.14-1.el7                 @mongodb 
mongodb-org-database-tools-extra.x86_64   4.4.14-1.el7                 @mongodb 
mongodb-org-mongos.x86_64                 4.4.14-1.el7                 @mongodb 
mongodb-org-server.x86_64                 4.4.14-1.el7                 @mongodb 
mongodb-org-shell.x86_64                  4.4.14-1.el7                 @mongodb 
mongodb-org-tools.x86_64                  4.4.14-1.el7                 @mongodb 
google-noto-sans-mongolian-fonts.noarch   20141117-5.el7               base     
mongocli.x86_64                           1.25.0-1                     mongodb  
mongodb-atlas-cli.x86_64                  1.1.0-1                      mongodb  
mongodb-mongosh.x86_64                    1.4.2-1.el8                  mongodb  

4） install

[[email protected] ~]# yum install mongo-org.x86_64 -y

5） Turn on MongoDB service & Turn on MongoDB Boot from boot

[[email protected] ~]# systemctl start mongod
[[email protected] ~]# systemctl enable mongod

6） Check if the service is on （ many-ways ）

 Method 1 :
[[email protected] ~]# systemctl status mongod
● mongod.service - MongoDB Database Server
   Loaded: loaded (/usr/lib/systemd/system/mongod.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2022-06-01 20:20:49 CST; 21min ago
     Docs: https://docs.mongodb.org/manual
  Process: 945 ExecStart=/usr/bin/mongod $OPTIONS (code=exited, status=0/SUCCESS)
  Process: 942 ExecStartPre=/usr/bin/chmod 0755 /var/run/mongodb (code=exited, status=0/SUCCESS)
  Process: 939 ExecStartPre=/usr/bin/chown mongod:mongod /var/run/mongodb (code=exited, status=0/SUCCESS)
  Process: 936 ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb (code=exited, status=0/SUCCESS)
 Main PID: 983 (mongod)
   CGroup: /system.slice/mongod.service
           └─983 /usr/bin/mongod -f /etc/mongod.conf

Jun 01 20:20:47 localhost.localdomain systemd[1]: Starting MongoDB Database Server...
Jun 01 20:20:47 localhost.localdomain mongod[945]: about to fork child process, waiting....
Jun 01 20:20:47 localhost.localdomain mongod[945]: forked process: 983
Jun 01 20:20:49 localhost.localdomain mongod[945]: child process started successfully, ...g
Jun 01 20:20:49 localhost.localdomain systemd[1]: Started MongoDB Database Server.
Hint: Some lines were ellipsized, use -l to show in full.

 Method 2 :
[[email protected] ~]# ps -ef | grep mongod
mongod      983      1  0 20:20 ?        00:00:06 /usr/bin/mongod -f /etc/mongod.conf
root       2333   1296  0 20:40 pts/0    00:00:00 grep --color=auto mongod

 Method 3 :
[[email protected] ~]# netstat -lnupt | grep 27017
tcp        0      0 127.0.0.1:27017         0.0.0.0:*               LISTEN      983/mongod 

 Method four :
[[email protected] ~]# lsof -i tcp:27017
COMMAND PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
mongod  983 mongod   11u  IPv4  18211      0t0  TCP localhost:27017 (LISTEN)

7） Use MongoDB

[[email protected] ~]# mongo
MongoDB shell version v4.4.14
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session {
     "id" : UUID("ae06ee2e-558f-4885-bcf9-73263de9ac0c") }
MongoDB server version: 4.4.14
---
The server generated these startup warnings when booting: 
        2022-06-01T20:20:49.209+08:00: Access control is not enabled for the database. Read and write access to data and configuration is unrestricted
        2022-06-01T20:20:49.210+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
        2022-06-01T20:20:49.210+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
---
---
        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()
---
> 

2、 Source code installation

1） Get the corresponding MongoDB Source installation package （ Choose... Here 4.4.14 edition ）

[[email protected] ~]#wget -c https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-4.4.14.tgz

[[email protected] ~]# ll		// View the download results 
total 70708
-rw-------. 1 root root     1392 Mar 26 17:20 anaconda-ks.cfg
-rw-r--r--  1 root root 72399766 May  4 23:03 mongodb-linux-x86_64-rhel70-4.4.14.tgz

2） Decompress the source installation package

[[email protected] ~]# tar xf mongodb-linux-x86_64-rhel70-4.4.14.tgz -C /usr/local/
// Unzip to “/usr/local” Under the table of contents 

[[email protected] ~]# ll -d /usr/local/mongodb-linux-x86_64-rhel70-4.4.14/
drwxr-xr-x 5 root root 123 May 28 23:40 /usr/local/mongodb-linux-x86_64-rhel70-4.4.14/
// You can see that the decompression has been successful 

3） Create soft link （ Naming mongodb）【 convenient 】：

[[email protected] ~]# ln -sv mongodb-linux-x86_64-rhel70-3.4.7/ /usr/local/mongodb

4） Create environment variables ：

[[email protected] ~]# echo "export PATH=$PATH:/usr/local/mongodb/bin" > /etc/profile.d/mongo.sh
[[email protected] ~]# source /etc/profile.d/mongo.sh
// notes ： Be sure to perform this step , Otherwise, you can't pass in the end “mongo” Command to use MongoDB

5） Create corresponding system group & System users

[[email protected] ~]# groupadd -g 996 -r mongod
[[email protected] ~]# useradd -u 997 -g 996 -r -c mongod -d /var/lib/mongo -s /bin/false mongod

// According to the requirements of system users , Create the corresponding directory ：
[[email protected] ~]# mkdir /var/lib/mongo
[[email protected] ~]# chown -R mongod:mongod /var/lib/mongo/

// View the creation results ：
[[email protected] ~]# grep mongod /etc/passwd
mongod:x:997:996:mongod:/var/lib/mongo:/bin/false
[[email protected] ~]# id mongod
uid=997(mongod) gid=996(mongod) groups=996(mongod)

6） Create the master configuration file mongod.conf（ Find templates online & Carry rpm Main configuration file of package installation ）

[[email protected] ~]# vim /usr/local/mongodb/bin/mongod.conf
systemLog:   
         destination: file  # Output log files as files , Input file Before , A space is required 
         path: /usr/local/mongodb/log/mongodb.log # Indicates the storage log file     
         logAppend: true    # The log is in append mode ,false It's overlay mode  
storage: 
         dbPath: /usr/local/mongodb/data    # Indicates storage mongodb Database file directory 
processManagement: 
         fork: true    # Run as a background service 
#net:
#         bindIp: 127.0.0.1
#         port: 27017
#security:
#         authorization:enabled

7） Create the required directory specified in the master configuration file （ Data directory & Log directory ） & Specified log file （ It's not automatically created ）【 If you do not create a startup, an error will be reported 】

[[email protected] ~]# mkdir -p /usr/local/mongodb/{
    data,log}

[[email protected] ~]# touch /usr/local/mongodb/log/mongodb.log

8） To write systemctl start-up / close / Restart script （ Find templates online & Carry rpm Script for package installation ）

[[email protected] ~]# vim /usr/lib/systemd/system/mongod.service
[Unit]
Description=mongodb service daemon
After=network.target

[Service]
Type=forking
ExecStart=/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/bin/mongod.conf
# Call the command to start the service , And specify the path of the service main configuration file 
ExecStop=/usr/local/mongodb/bin/mongod --shutdown -f /usr/local/mongodb/bin/mongod.conf
# Call the command to close the service , And specify the path of the service main configuration file 
PrivateTmp=true

[Install]
WantedBy=multi-user.target

 Turn on MongoDB service ：
[[email protected] ~]# systemctl start mongod

9） Check if the service is on （ many-ways ）

 Method 1 :
[[email protected] ~]# systemctl status mongod
● mongod.service - mongodb service daemon
   Loaded: loaded (/usr/lib/systemd/system/mongod.service; disabled; vendor preset: disabled)
   Active: active (running) since Wed 2022-06-01 21:11:46 CST; 5s ago
  Process: 1352 ExecStart=/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/bin/mongod.conf (code=exited, status=0/SUCCESS)
 Main PID: 1354 (mongod)
   CGroup: /system.slice/mongod.service
           └─1354 /usr/local/mongodb/bin/mongod -f /usr/local/mongodb/bin/mongod.conf

Jun 01 21:11:44 localhost.localdomain systemd[1]: Starting mongodb service daemon...
Jun 01 21:11:44 localhost.localdomain mongod[1352]: about to fork child process, waitin....
Jun 01 21:11:44 localhost.localdomain mongod[1352]: forked process: 1354
Jun 01 21:11:46 localhost.localdomain mongod[1352]: child process started successfully,...g
Jun 01 21:11:46 localhost.localdomain systemd[1]: Started mongodb service daemon.
Hint: Some lines were ellipsized, use -l to show in full.

 Method 2 :
[[email protected] ~]# ps -ef | grep mongod
root       1354      1  1 21:11 ?        00:00:02 /usr/local/mongodb/bin/mongod -f /usr/local/mongodb/bin/mongod.conf
root       1547   1187  0 21:14 pts/0    00:00:00 grep --color=auto mongod

 Method 3 :
[[email protected] ~]# ps -ef | grep mongod
root       1354      1  1 21:11 ?        00:00:02 /usr/local/mongodb/bin/mongod -f /usr/local/mongodb/bin/mongod.conf
root       1547   1187  0 21:14 pts/0    00:00:00 grep --color=auto mongod
[[email protected] ~]# netstat -lnupt | grep 27017
tcp        0      0 0.0.0.0:27017           0.0.0.0:*               LISTEN      1354/mongod

 Method four :
[[email protected] ~]# lsof -i tcp:27017
COMMAND  PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
mongod  1354 root   12u  IPv4  21147      0t0  TCP *:27017 (LISTEN)

10） Use MongoDB

[[email protected] ~]# mongo
MongoDB shell version v4.4.14
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session {
     "id" : UUID("30c2e185-ca3c-45f1-98d2-d4560308df52") }
MongoDB server version: 4.4.14
---
The server generated these startup warnings when booting: 
        2022-06-01T21:11:46.164+08:00: Access control is not enabled for the database. Read and write access to data and configuration is unrestricted
        2022-06-01T21:11:46.164+08:00: You are running this process as the root user, which is not recommended
        2022-06-01T21:11:46.164+08:00: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. We suggest setting it to 'never'
        2022-06-01T21:11:46.164+08:00: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. We suggest setting it to 'never'
        2022-06-01T21:11:46.164+08:00: Soft rlimits too low
        2022-06-01T21:11:46.164+08:00:         currentValue: 1024
        2022-06-01T21:11:46.164+08:00:         recommendedMinimum: 64000
---
---
        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()
---
>