Instalación de MongoDB

Hace poco también me tocó configurar un servicio de base de datos mongodb, un motor que al parecer ya se está comenzando a utilizar bastante. Les dejo algunos pasos a continuación:

Primero crearemos el usuario mongod (como usuario root):

mkdir /home/mongod

chown mongod:mongod /home/mongod

chmod 700  /home/mongod

adduser --system -d /home/mongod mongod

echo secu13re | passwd --stdin mongod

usermod -c 'mongod_database_not_delete' mongod

usermod -s /bin/bash mongod

Ahora nos convertiremos en usuario mongod que acabamos de crear

[root@bci-bluemixdbmongo01 /]# su - mongod

Last login: Fri May 26 11:33:04 CLT 2017 on pts/0

Como usuario mongod descomprimimos el archivo que hemos bajado del sitio web de mongo:

-bash-4.2$ cd /dbprdMongo/

-bash-4.2$ ls -ltr

total 80500

drwxrwx--- 4 mongod root       27 May 23 17:19 bd

-rwxrwxrwx 1 root   root 82431513 May 26 11:22 mongodb-linux-x86_64-rhel70-3.2.13.tgz

-bash-4.2$ tar xvfz mongodb-linux-x86_64-rhel70-3.2.13.tgz

mongodb-linux-x86_64-rhel70-3.2.13/README

mongodb-linux-x86_64-rhel70-3.2.13/THIRD-PARTY-NOTICES

mongodb-linux-x86_64-rhel70-3.2.13/MPL-2

mongodb-linux-x86_64-rhel70-3.2.13/GNU-AGPL-3.0

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongodump

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongorestore

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongoexport

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongoimport

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongostat

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongotop

mongodb-linux-x86_64-rhel70-3.2.13/bin/bsondump

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongofiles

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongooplog

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongoperf

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongosniff

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongod

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongos

mongodb-linux-x86_64-rhel70-3.2.13/bin/mongo

Crear link simbolico:

-bash-4.2$ ln -s /dbprdMongo/mongodb-linux-x86_64-rhel70-3.2.13 /dbprdMongo/mongodb

-bash-4.2$

Posteriormente añadir como root los siguientes privilegios para la carpeta que contendrá los datafiles y logfiles:

[root@bci-bluemixdbmongo01 dbprdMongo]# pwd

/dbprdMongo

[root@bci-bluemixdbmongo01 dbprdMongo]# chown -R mongod:root bd/

[root@bci-bluemixdbmongo01 dbprdMongo]# chmod -R 770 bd/

[root@bci-bluemixdbmongo01 dbprdMongo]#

Añadir lo siguiente al bash_profile del usuario mongod

export PATH=$PATH:/dbprdMongo/mongodb/bin

Se sugiere dejar el selinux deshabilitado

/etc/selinux/config con SELINUX=disabled.

Ahora se procederá a probar el servicio de mongodb

-bash-4.2$ /dbprdMongo/mongodb/bin/mongod --dbpath /dbprdMongo/bd

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] MongoDB starting : pid=2056 port=27017 dbpath=/dbprdMongo/bd 64-bit host=bci-bluemixdbmongo01

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] db version v3.2.13

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] git version: 23899209cad60aaafe114f6aea6cb83025ff51bc

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] OpenSSL version: OpenSSL 1.0.1e-fips 11 Feb 2013

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] allocator: tcmalloc

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] modules: none

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] build environment:

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten]     distmod: rhel70

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten]     distarch: x86_64

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten]     target_arch: x86_64

2017-05-26T11:57:45.852-0300 I CONTROL  [initandlisten] options: { storage: { dbPath: "/dbprdMongo/bd" } }

2017-05-26T11:57:45.876-0300 I -        [initandlisten] Detected data files in /dbprdMongo/bd created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.

2017-05-26T11:57:45.876-0300 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=1G,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),

2017-05-26T11:57:46.147-0300 I CONTROL  [initandlisten]

2017-05-26T11:57:46.147-0300 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.

2017-05-26T11:57:46.147-0300 I CONTROL  [initandlisten] **        We suggest setting it to 'never'

2017-05-26T11:57:46.147-0300 I CONTROL  [initandlisten]

2017-05-26T11:57:46.147-0300 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.

2017-05-26T11:57:46.147-0300 I CONTROL  [initandlisten] **        We suggest setting it to 'never'

2017-05-26T11:57:46.147-0300 I CONTROL  [initandlisten]

2017-05-26T11:57:46.148-0300 I FTDC     [initandlisten] Initializing full-time diagnostic data capture with directory '/dbprdMongo/bd/diagnostic.data'

2017-05-26T11:57:46.148-0300 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canonicalization worker

2017-05-26T11:57:46.148-0300 I NETWORK  [initandlisten] waiting for connections on port 27017

^C2017-05-26T11:57:47.703-0300 I CONTROL  [signalProcessingThread] got signal 2 (Interrupt), will terminate after current cmd ends

2017-05-26T11:57:47.703-0300 I FTDC     [signalProcessingThread] Shutting down full-time diagnostic data capture

2017-05-26T11:57:47.705-0300 I CONTROL  [signalProcessingThread] now exiting

2017-05-26T11:57:47.705-0300 I NETWORK  [signalProcessingThread] shutdown: going to close listening sockets...

2017-05-26T11:57:47.705-0300 I NETWORK  [signalProcessingThread] closing listening socket: 5

2017-05-26T11:57:47.705-0300 I NETWORK  [signalProcessingThread] closing listening socket: 6

2017-05-26T11:57:47.705-0300 I NETWORK  [signalProcessingThread] removing socket file: /tmp/mongodb-27017.sock

2017-05-26T11:57:47.705-0300 I NETWORK  [signalProcessingThread] shutdown: going to flush diaglog...

2017-05-26T11:57:47.705-0300 I NETWORK  [signalProcessingThread] shutdown: going to close sockets...

2017-05-26T11:57:47.705-0300 I STORAGE  [signalProcessingThread] WiredTigerKVEngine shutting down

2017-05-26T11:57:47.754-0300 I STORAGE  [signalProcessingThread] shutdown: removing fs lock...

2017-05-26T11:57:47.755-0300 I CONTROL  [signalProcessingThread] dbexit:  rc: 0

Ahora se procera a crear la automatizaciòn del servicio (como usuario root)

Creamos el siguiente archivo:

vi /etc/systemd/system/mongod.service

Con el siguiente contenido:

[Unit]

Description=Mongo Database

After=network.target

[Service]

User=mongod

Group=mongod

ExecStart=/dbprdMongo/mongodb/bin/mongod --dbpath /dbprdMongo/bd

ExecStop=/dbprdMongo/mongodb/bin/mongod --dbpath /dbprdMongo/bd --shutdown

Restart=always

[Install]

WantedBy=multi-user.target

Como root se procede a automatizar el servicio

[root@bci-bluemixdbmongo01 ~]# sudo systemctl enable mongod

Created symlink from /etc/systemd/system/multi-user.target.wants/mongod.service to /etc/systemd/system/mongod.service.

Ahora se procede a probar el servicio

[root@bci-bluemixdbmongo01 ~]# systemctl start mongod

[root@bci-bluemixdbmongo01 ~]# systemctl status mongod

● mongod.service - Mongo Database

  Loaded: loaded (/etc/systemd/system/mongod.service; enabled; vendor preset: disabled)

  Active: active (running) since Fri 2017-05-26 12:11:46 CLT; 2s ago

Main PID: 2192 (mongod)

  CGroup: /system.slice/mongod.service

          └─2192 /dbprdMongo/mongodb/bin/mongod --dbpath /dbprdMongo/bd

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.408-0300 I CONTROL  [initandlisten]

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.409-0300 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hu...always'.

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.409-0300 I CONTROL  [initandlisten] **        We suggest setting it to 'never'

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.409-0300 I CONTROL  [initandlisten]

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.409-0300 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hu...always'.

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.409-0300 I CONTROL  [initandlisten] **        We suggest setting it to 'never'

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.409-0300 I CONTROL  [initandlisten]

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.410-0300 I FTDC     [initandlisten] Initializing full-time diagnostic data ca...ic.data'

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.410-0300 I NETWORK  [initandlisten] waiting for connections on port 27017

May 26 12:11:46 bci-bluemixdbmongo01 mongod[2192]: 2017-05-26T12:11:46.410-0300 I NETWORK  [HostnameCanonicalizationWorker] Starting hostname canoni...n worker

Hint: Some lines were ellipsized, use -l to show in full.

[root@bci-bluemixdbmongo01 ~]# ps -fea | grep -i mongo

mongod    2192     1  1 12:11 ?        00:00:00 /dbprdMongo/mongodb/bin/mongod --dbpath /dbprdMongo/bd

root      2218  1903  0 12:12 pts/0    00:00:00 grep --color=auto -i mongo

Ahora se procede a bajar

[root@bci-bluemixdbmongo01 bd]# systemctl stop mongod

[root@bci-bluemixdbmongo01 bd]#