MongoDB installation on CentOS - mongodb

I tried installing MongoDB on a minimal CentOS 6.8 image.
My shell script is the following:
#!/bin/sh
MONGODB_V="2.6.1"
cat > /etc/yum.repos.d/10gen.repo <<EOL
[mongodb]
name=MongoDB Repository
baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64/
gpgcheck=0
enabled=1
EOL
sudo yum install "mongodb-org-$MONGODB_V"
sudo yum install "mongodb-org-server-$MONGODB_V"
sudo yum install "mongodb-org-shell-$MONGODB_V"
sudo yum install "mongodb-org-mongos-$MONGODB_V"
sudo yum install "mongodb-org-tools-$MONGODB_V"
mkdir -p /data/db
Everything works well on the installation side but I can't seem to start MongoDB.
I tried:
sudo service mongod start # mongod: unrecognized service
/opt/mongo/bin/mongod
/usr/local/bin/mongod
Any ideas ? Thanks in advance !

Ok, I made a stupid mistake:
/etc/yum.repos.d/10gen.repo
should've been:
/etc/yum.repos.d/mongodb.repo
The repository changed since the 10gen company changed their name to Mongodb inc..

Related

mongodb is not running on my Ubuntu 20.04.3 LTS

I'm trying to follow a MongoDB example for learning matters.
The instructions say that after starting MongoDB I will have a mongodb terminal so I can create a database and make it the active one.
The problem is that I start mongodb but I don't have the application terminal, it runs but at the end I have the ubuntu's terminal.
I followed this https://docs.mongodb.com/manual/tutorial/install-mongodb-on-os-x/ to install Mongo:
pip install pymongo
wget -qO - https://www.mongodb.org/static/pgp/server-5.0.asc | sudo apt-key add -
echo "deb [ arch=amd64,arm64 ] https://repo.mongodb.org/apt/ubuntu focal/mongodb-org/5.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-5.0.list
sudo apt-get update
sudo apt-get install -y mongodb-org
I also installed COMPASS, this is running correctly
wget https://downloads.mongodb.com/compass/mongodb-compass_1.26.1_amd64.deb
sudo dpkg -i mongodb-compass_1.26.1_amd64.deb
mongodb-compass
I'm starting Mongo
sudo systemctl start mongod #this do something but takes me back to the terminal prompt.
mongosh #is launching this "MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017"
Definitely I'm doing something wrong but I cannot identify it.
Does anyone have an idea?
Thanks in advance

How to fix ''mongod: command not found " error in AWS Cloud9

I want to install MongoDB in my AWS Cloud9 server. So I followed the instruction as the Cloud9 community page says, but the command to run the MongoDB server in c9 command line i.e.,
$ *./mongod* returns ./mongod: line 1: mongod: command not found.
help me to fix this.
I've tried searching about it on YouTube but it didn't work.
$ *sudo yum install -y mongodb-org*
Loaded plugins: priorities, update-motd, upgrade-helper
1062 packages excluded due to repository priority protections
No package mongodb-org available.
Error: Nothing to do
$ mkdir data
$ echo 'mongod --bind_ip=$IP --dbpath=data --nojournal --rest "$#"' > mongod
$ chmod a+x mongod
$ ./mongod
./mongod: line 1: mongod: command not found
We can start mongodb by running the mongod script on your project root:
command :- ./mongod
From the error given below, it is apparent that the mongo repo wasn't configured in your yum package manager.
vocstartsoft:~ $ sudo yum install -y mongodb-org
Loaded plugins: priorities, update-motd, upgrade-helper 1062 packages excluded due to repository priority protections No package mongodb-org available. Error: Nothing to do
Create /etc/yum.repos.d/mongodb-org-4.0.repo and write the following in it.
[mongodb-org-4.0]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/4.0/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-4.0.asc
Or add the repo directly from the .repo file,
yum-config-manager --add-repo https://repo.mongodb.org/yum/amazon/mongodb-org.repo
Then run,
sudo yum install -y mongodb-org
Reference
https://docs.mongodb.com/manual/tutorial/install-mongodb-on-red-hat/
Either try this: sudo apt install mongodb-clients
Or consider the below process:
ubuntu:~/environment $ At the terminal you’ll see this.
Enter touch mongodb-org-3.6.repo into the terminal
Now open the mongodb-org-3.6.repo file in your code editor (select it from the left-hand file menu) and paste the following into it then save the file:
[mongodb-org-3.6]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/amazon/2013.03/mongodb-org/3.6/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc
* Now run the following in your terminal:
sudo mv mongodb-org-3.6.repo /etc/yum.repos.d
sudo yum install -y mongodb-org
If the second code does not work try:
sudo apt install mongodb-clients
Close the mongodb-org-3.6.repo file and press Close tab when prompted
Change directories back into root ~ by entering cd into the terminal then enter the following commands:
“ubuntu:~ $ “ - Terminal should look like this.
sudo mkdir -p /data/db
echo 'mongod --dbpath=data --nojournal' > mongod
chmod a+x mongod
Now test mongod with ./mongod
Remember, you must first enter cd to change directories into root ~ before running ./mongod
Don't forget to shut down ./mongod with ctrl + c each time you're done working
-if this error pops up while using command mongod
exception in initAndListen: IllegalOperation: Attempted to create a lock file on a read-only directory: /data/db, terminating
Then use the code:
sudo chmod -R go+w /data/db
Reference

MongoDB not able to uninstall(Ubuntu 14.04 and MongoDB 2.6.4.)

I am using Ubuntu 14.04 and MongoDB 2.6.4. I have installed packages - mongodb-org=2.6.4 mongodb-org-server=2.6.4 mongodb-org-shell=2.6.4 mongodb-org-mongos=2.6.4 mongodb-org-tools=2.6.4
I can see MongoDB directory on /opt/bitnami/mongodb path
I tried following command but not getting any packages
sudo dpkg -l | grep mongo
Can you please help me how to uninstall MongoDB ?
Use command :
sudo apt-get purge --auto-remove package-name
In your case :
sudo apt-get purge --auto-remove mongodb mongodb-clients mongodb-server mongodb-dev
It will purge required packages along with dependencies that are installed with mongodb.
--auto-remove option work similar to sudo apt-get autoremove
Run below command to search for installed mongo packages with dpkg :
sudo dpkg -l | grep mongo
If the above command still returns a list of packages with mongo in the name.
Then try using a wildcard search for the name:
sudo apt-get remove mongodb* --purge

Mongo DB installation issue

I installed mongo DB by using docs of mongo DB. But when I tried this command in ubuntu terminal, I got this error:
Command used:
sudo mongod
Error:
*********************************************************************
ERROR: dbpath (/data/db) does not exist.
Create this directory or give existing directory in --dbpath.
See http://dochub.mongodb.org/core/startingandstoppingmongo
*********************************************************************
How can I fix this error?
Run this command to create a directory -
sudo mkdir /data/db
and then run
sudo mongod
If you installed mongo as a service (for example, using the following docs: http://docs.mongodb.org/manual/tutorial/install-mongodb-on-ubuntu/), simply execute:
sudo service mongod start
Otherwise, if you simply wish to try mongo without any specific configuration, you can supply a directory for the db files by executing:
mongod --dbpath /path/to/db &
Simple Mongo Setup on AWS Unbuntu 14.0 - By Hrushikesh Kulkarni
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10
echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/mongodb.list
sudo apt-get update sudo apt-get install -y mongodb-org sudo apt-get install php5 sudo apt-get install apache2 sudo apt-get install libsasl2-dev sudo apt-get install php-pear php5-dev sudo pecl install mongo
Add Below Stuff in /etc/php5/apache2/php.ini
extension_dir = "/usr/lib/php5/20121212" extension=mongo.so sudo service apache2 restart
Create php File in /var/www/html Run file in browser and find Extension "Mongo"
If you have created Test123 folder then
Run following command to restart the mongodb service
sudo service mongodb restart
Then change the db for the mongodb
Use following command
sudo mongod --dbpath Test123
Here Test123 is directory that you have created on specific location.

Postgresql 9.2 pg_dump version mismatch

I am trying to dump a Postgresql database using the pg_dump tool.
$ pg_dump books > books.out
How ever i am getting this error.
pg_dump: server version: 9.2.1; pg_dump version: 9.1.6
pg_dump: aborting because of server version mismatch
The --ignore-version option is now deprecated and really would not be a a solution to my issue even if it had worked.
How can I upgrade pg_dump to resolve this issue?
Check the installed version(s) of pg_dump:
find / -name pg_dump -type f 2>/dev/null
My output was:
/usr/pgsql-9.3/bin/pg_dump
/usr/bin/pg_dump
There are two versions installed. To update pg_dump with the newer version:
sudo ln -s /usr/pgsql-9.3/bin/pg_dump /usr/bin/pg_dump --force
This will create the symlink to the newer version.
I encountered this while using Heroku on Ubuntu, and here's how I fixed it:
Add the PostgreSQL apt repository as described at "Linux downloads (Ubuntu)
". (There are similar pages for other operating systems.)
Upgrade to the latest version (9.3 for me) with:
sudo apt-get install postgresql
Recreate the symbolic link in /usr/bin with:
sudo ln -s /usr/lib/postgresql/9.3/bin/pg_dump /usr/bin/pg_dump --force
The version number in the /usr/lib/postgresql/... path above should match the server version number in the error you received. So if your error says, pg_dump: server version: 9.9, then link to /usr/lib/postgresql/9.9/....
Macs have a builtin /usr/bin/pg_dump command that is used as default.
With the postgresql install you get another binary at /Library/PostgreSQL/<version>/bin/pg_dump
You can just locate pg_dump and use the full path in command
locate pg_dump
/usr/bin/pg_dump
/usr/bin/pg_dumpall
/usr/lib/postgresql/9.3/bin/pg_dump
/usr/lib/postgresql/9.3/bin/pg_dumpall
/usr/lib/postgresql/9.6/bin/pg_dump
/usr/lib/postgresql/9.6/bin/pg_dumpall
Now just use the path of the desired version in the command
/usr/lib/postgresql/9.6/bin/pg_dump books > books.out
You can either install PostgreSQL 9.2.1 in the pg_dump client machine or just copy the $PGHOME from the PostgreSQL server machine to the client machine. Note that there is no need to initdb a new cluster in the client machine.
After you have finished installing the 9.2.1 software, remember to edit some environment variables in your .bash_profile file.
If you're on Ubuntu, you might have an old version of postgresql-client installed. Based on the versions in your error message, the solution would be the following:
sudo apt-get remove postgresql-client-9.1
sudo apt-get install postgresql-client-9.2
If you have docker installed you can do something like:
$ docker run postgres:9.2 pg_dump books > books.out
That will download the Docker container with Postgres 9.2 in it, run pg_dump inside of the container, and write the output.
On Ubuntu you can simply add the most recent Apt repository and then run:
sudo apt-get install postgresql-client-11
Every time you upgrade or re install a new version of PostgreSQL, a latest version of pg_dump is installed.
There must be a PostgreSQL/bin directory somewhere on your system, under the latest version of PostgreSQL that you've installed ( 9.2.1 is latest) and try running the
pg_dump from in there.
For those running Postgres.app:
Add the following code to your .bash_profile:
export PATH=/Applications/Postgres.app/Contents/Versions/latest/bin:$PATH
Restart terminal.
For Macs with Homebrew. I had this problem when fetching the db from Heroku. I've fixed it just running:
brew upgrade postgresql
For mac users
put to the top of .profile file.
export PATH="/Applications/Postgres.app/Contents/MacOS/bin:$PATH"
then run
. ~/.profile
An alternative answer that I don't think anyone else has covered.
If you have multiple PG clusters installed (as I do), then you can view those using pg_lsclusters.
You should be able to see the version and cluster from the list displayed.
From there, you can then do this:
pg_dump --cluster=9.6/main books > books.out
Obviously, replace the version and cluster name with the appropriate one for your circumstances from what is returned by pg_lsclusters separating the version and cluster with a /. This targets the specific cluster you wish to run against.
For me the issue was updating psql apt-get wasn't resolving newer versions, even after update. The following worked.
Ubuntu
Start with the import of the GPG key for PostgreSQL packages.
sudo apt-get install wget ca-certificates
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
Now add the repository to your system.
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
Install PostgreSQL on Ubuntu
sudo apt-get update
sudo apt-get install postgresql postgresql-contrib
https://www.postgresql.org/download/linux/ubuntu/
As explained, this is because your postgresql is in old version -> update it
For Mac via homebrew:
brew tap petere/postgresql,
brew install <formula> (eg: brew install petere/postgresql/postgresql-9.6)
Remove old postgre:
brew unlink postgresql
brew link -f postgresql-9.6
If any error happen, don't forget to read and follow brew instruction in each step.
Check this out for more: https://github.com/petere/homebrew-postgresql
The answer sounds silly but if you get the above error and wanna run the pg_dump for earlier version go to bin directory of postgres and type
./pg_dump servername > out.sql ./ ignores the root and looks for pg_dump in current directory
I had same error and this is how I solved it in my case.
This means your postgresql version is 9.2.1 but you have started postgresql service of 9.1.6.
If you run psql postgres you will see:
psql (9.2.1, server 9.1.6)
What I did to solve this problem is:
brew services stop postgresql#9.1.6
brew services restart postgresql#9.2.1
Now run psql postgres and you should have: psql (9.2.1)
You can also run brew services list to see the status of your postgres.
This worked for me, a collection of solutions from above and other sites. If you specified a version like postgressql-client-11 before then you need to remove that version first.
sudo apt-get remove -y postgresql-client
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ `lsb_release -cs`-pgdg main" >> /etc/apt/sources.list.d/pgdg.list'
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo apt-get update
sudo apt-get install -y postgresql-client-12
I was facing the same issue. I used docker instead of upgrading pg_dump.
run following command to create a Docker container of postgres 14.2, or any other version as you like.
sudo docker run --name mac_postgres -p 5444:5432 -e POSTGRES_PASSWORD=password -d postgres:14.2
Then take dump using following command. Note: you should change the host, port, username and password according to your actual database credentials.
sudo docker exec -it mac_postgres pg_dump --host=xxxxx0.b.db.ondigitalocean.com --port=250xx --username=doadmin --dbname=test --password > out.sql
After entering password. Your dump will be ready in out.sql file. Then you can delete the docker-container.
sudo docker stop mac_postgres
sudo docker rm mac_postgres
If you're using Heroku's Postgres.app the pg_dump (along with all the other binaries) is in /Applications/Postgres.app/Contents/MacOS/bin/
so in that case it's
ln -s /Applications/Postgres.app/Contents/MacOS/bin/pg_dump /usr/local/bin/pg_dump
or
ln -s /Applications/Postgres.app/Contents/MacOS/bin/* /usr/local/bin/.
to just grab them all
** after install postgres version is match(9.2)
Create a symbolic link or new shortcut
**- on '/usr/bin'
syntag is = sudo ln -s [path for use] [new shortcut name]
example
sudo ln -s /usr/lib/postgresql/9.2/bin/pg_dump new_pg_dump
-- how to call : new_pg_dump -h 192.168.9.88 -U postgres database
Try that:
export PATH=/usr/local/bin:$PATH
If the database is installed on a different machine it has probably correct version of pg_dump installed. This means that you can execute pg_dump command remotely with SSH:
ssh username#dbserver pg_dump books > books.out
You can also use public key authentication for passwordless execution. Steps to achieve that:
Generate (if not yet done) a pair of keys with ssh-keygen command.
Copy the public key to the database server, usually ~/.ssh/authorized_keys.
Test if the connection works with ssh command.
Well, I had the same issue as I have two postgress versions installed.
Just use the proper pg_dump and you don't need to change anything, in your case:
$> /usr/lib/postgresql/9.2/bin/pg_dump books > books.out
For macs, use find / -name pg_dump -type f 2>/dev/null find the location of pg_dump
For me, I have following results:
Applications/Postgres.app/Contents/Versions/9.5/bin/pg_dump
/usr/local/Cellar/postgresql/9.4.5_2/bin/pg_dump
If you don't want to use sudo ln -s new_pg_dump old_pg_dump --force, just use:
Applications/Postgres.app/Contents/Versions/9.5/bin/pg_dump to replace with pg_dump in your terminal
For example:
Applications/Postgres.app/Contents/Versions/9.5/bin/pg_dump books > books.out
It works for me!
On my scenario the production version was 12, and my development version was 11, upgrading the package postgresql-client-xx was enough to solve my incident.
Reference web page : https://www.postgresql.org/download/linux/ubuntu/
sudo apt-get update && sudo apt-get -y upgrade postgresql-client
One interest thing to point out is that after the upgrade the previous version kept installed :
mlazo#mlazo-pc:~$ dpkg -l |grep -i postgresql-client
ii postgresql-client-11 11.8-1.pgdg18.04+1 amd64 front-end programs for PostgreSQL 11
ii postgresql-client-12 12.4-1.pgdg18.04+1 amd64 front-end programs for PostgreSQL 12
Hope my experience would be helpful to someone.
Greetings,
I had the same message, for me it was that I had to adjust the following:
export LD_LIBRARY_PATH=/usr/pgsql-12/lib:....
export LD_RUN_PATH=/usr/pgsql-12/lib:.....
First step: see if postgres has a repository with prebuilt binaries for the version you want for your OS: https://www.postgresql.org/download/
If that doesn't work (for instance if your distro is there but is no longer supported, so correct binaries aren't provided for it), or if you just want to go straight or the source and not have to worry about adding remote repo's, etc.
What I did is download the raw source of postgres for the desired version.
Untar it, cd into it, build it ./configure && make, then:
postgresql-12.3 $ find . -name pg_dump
./src/bin/pg_dump/pg_dump
$ ./src/bin/pg_dump/pg_dump
unable to load libpg.so.5 # if it says this...
$ find . -name libpg.so.5
$ export LD_LIBRARY_PATH=/your/path/to/the/shared/dir/of/above/file
$ ./src/bin/pg_dump/pg_dump # works now
Now you have access to any version that builds on your box. Which should be any.
Full steps tutorial
Your local version needs to match the one used by AWS on the remote server.
Unfortunately, apt-get install will lag behind the official release.
So you need to proceed the following way:
sudo apt-get remove postgresql
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
Then check your error message should be something like
pg_dump: server version: 12.3; pg_dump version: 10.16 (Ubuntu 10.16-0ubuntu0.18.04.1)
So it means you want version 12 (and not 13), for the install of the matching version by specifying the version number (without minor) during your fresh install:
sudo apt-get -y install postgresql-12
Now it works:
pg_dump -h {{endpoint}} -U {{username}} -f dump.sql {{tablename}}
NB: You get the endpoint in Connectivity & security go to https://us-east-2.console.aws.amazon.com/rds/home?region=us-east-2 and click on your DB instance
For Ubuntu 20.04 with the "official" postgresql repo, moving from pg12 to pg13, I had to do this:
sudo apt purge postgresql-12
This was very hard for me to pinpoint. I had played with a variety of these packages:
postgresql-client
postgresql-client-common
postgresql-##
postgresql-client-##
postgresql-server-dev-##
pgadmin