CouchDB is a database manager for the web. It takes care of saving and storing NoSQL type data for server-side applications. It is widely used and its learning curve is very low.

On the other hand, CouchDB places a lot of emphasis on data replication as a persistent way to obtain data. That is, we will be able to connect multiple nodes and from there do the replication.

Of course, there are a lot of features and reasons why this project of the Apache Foundation is so important today.

So, let us start.

Install CouchDB on Ubuntu 20.04

Apache CouchDB although it is an open-source application is not in the official Ubuntu repositories. But the installation is not complicated since there is a dedicated repository for Ubuntu.

So, open a terminal or start an SSH session on your server.

Then, update your entire distribution:

sudo apt update
sudo apt upgrade

Next, you can install some packages needed to complete this tutorial.

sudo apt-get install software-properties-common curl

Then, download and import the GPG key from the CouchDB repository.

curl -L https://couchdb.apache.org/repo/bintray-pubkey.asc | sudo apt-key add

Then we can add the repository:

echo "deb https://apache.bintray.com/couchdb-deb focal main" | sudo tee -a /etc/apt/sources.list

Then refresh APT to load the added repository:

sudo apt update

Now you can install CouchDB by running the following command:

sudo apt install couchdb
Reading package lists… Done
 Building dependency tree       
 Reading state information… Done
 The following additional packages will be installed:
   libmozjs-68-0
 The following NEW packages will be installed:
   couchdb libmozjs-68-0
 0 upgraded, 2 newly installed, 0 to remove and 1 not upgraded.
 Need to get 31.5 MB of archives.
 After this operation, 63.0 MB of additional disk space will be used.
 Do you want to continue? [Y/n]

During the installation, you will see some configuration screens.

The first one will ask you how to install CouchDB. It can be a single server or in the form of a Cluster. In this case, I will choose the first option:

Then you will have to configure the IP address where CouchDB will listen. As I am working with a remote server it is convenient to use either the IP address of the server or 0.0.0.0 to make it accessible from all interfaces.

Then configure a login password for the CouchDB user. You will have to enter it twice.

Afterward, the installation will be completed.

After the installation, you can check the status of the service.

sudo systemctl status couchdb
 ● couchdb.service - Apache CouchDB
      Loaded: loaded (/lib/systemd/system/couchdb.service; enabled; vendor preset: enabled)
      Active: active (running) since Mon 2020-12-14 15:29:45 CET; 25s ago
    Main PID: 2092 (beam.smp)
       Tasks: 36 (limit: 2286)
      Memory: 34.4M
      CGroup: /system.slice/couchdb.service
              ├─2092 /opt/couchdb/bin/../erts-9.3.3.14/bin/beam.smp -K true -A 16 -Bd -- -root /opt/couchdb/bin/.. -progname couchdb -- -home /opt/couchdb -- -boot /opt/>
              ├─2109 /opt/couchdb/bin/../erts-9.3.3.14/bin/epmd -daemon
              ├─2127 erl_child_setup 65536
              ├─2149 inet_gethost 4
              └─2150 inet_gethost 4
 Dec 14 15:29:45 test systemd[1]: Started Apache CouchDB.

Access to the Apache CouchDB web interface

Now open your web browser and go to http://your-server:5984/_utils

Note: You have to open port 5984 in your firewall for this to work.

The next thing you will see is the log in screen.

The user is admin and the password is the one you defined during the installation.

When you log in you will see the entire CouchDB dashboard where you can create new databases and manage them.

Conclusion

Apache CouchDB is a database manager clearly focused on the professional environment, but this does not prevent it from being used in learning and personal environments. So today you have learned how to install it on a server with Ubuntu 20.04.

The post How to install CouchDB on Ubuntu 20.04? appeared first on Linux Windows and android Tutorials.

A new version of this fabulous document-oriented database manager has recently been released. That is to say that it is a NoSQL database manager.

One of the main characteristics of this program is that it allows the partial replication of the data. Therefore, it is widely used in companies of the caliber of Apple, BBC, and others.

On the other hand, CouchDB bases its strength on the logical composition of the data. It forgets about SQL relationships and focuses on self-contained documents that are even closer to reality.

All the above would not be possible if the engine was not prepared and it is developed in Earlang language optimized for these tasks.

To all this, the development of the application is very active and proof of this is the release of version 3.

We will keep an eye on it.

Apache CouchDB 3.0 features

There are many new features in this new version of Apache CouchDB, but the main ones are the following:

• Default installations are now secure and locked down. This increases the security in the defect installations.
• The default maximum document size has been reduced to 8MB. Documents that exceed this size will have problems replicating unless modifications are made.
• CouchDB 3.0 now requires a server admin user to be defined at startup or will print an error message and exit.
• All databases are now created by default as admin-only.

Also, note that some functions will be removed in the next version of Apache CouchDB. Some of them are:

• Show functions (/{db}/{ddoc}/_show)
• List functions (/{db}/{ddoc}/_list)
• Virtual hosts and ini-file rewrites
• Rewrite functions (/{db}/{ddoc}/_rewrite)

Also, other equally important features are:

• Updated to modern JavaScript engine SpiderMonkey 60
• Official support for ARM and PPC 32bit and 64bit systems
• Many large and small performance improvements
• Automatic view index warmer
• Smarter Compaction Daemon

As we see, it’s a pretty important release and it’s a correct evolution of a great program.

Conclusion

Everyday programs have to move forward to incorporate improvements or simply improve what they already do. Apache CouchDB is proof that great software can evolve and become even better.

In this post, we have examined the most important news of this release, but there is much more.

If you want to know the rest of the news, you can check the release notes.

Also, I invite you to read our post about CouchDB:

How to install Apache CouchDB on Debian 10?

How to install Apache CouchDB on CentOS 8?

Or, if you use Ubuntu:

How to install Apache CouchDB on Ubuntu 18.04?

So, please share this post and join our Telegram Channel.

The post Apache CouchDB 3.0 available appeared first on Linux Windows and android Tutorials.

CouchDB is a database manager for the web. It takes care of saving and storing NoSQL type data for server-side applications. It is widely used and its learning curve is very low.

On the other hand, CouchDB places a lot of emphasis on data replication as a persistent way to obtain data. That is, we will be able to connect multiple nodes and from there do the replication.

Of course, there are a lot of features and reasons why this project of the Apache Foundation is so important today.

So, let us start.

Install CouchDB on CentOS 8

There are several ways to install CouchDB on CentOS 8. Perhaps the most complex is to compile the program ourselves. Of course, this option guarantees that you always get the latest stable version.

On the other hand, there is the option of downloading and installing pre-compiled binary packages. And finally, we can install CouchDB on CentOS using the application repository. This last one will be the option to choose.

So let’s get started.

First, we need to add the CouchDB repository for CentOS 8. To do this, we need to create a text file in the system’s repository directory.

:~$ su
:~# nano /etc/yum.repos.d/bintray-apache-couchdb-rpm.repo

And in it, add the following content:

[bintray--apache-couchdb-rpm]
name=bintray--apache-couchdb-rpm
baseurl=http://apache.bintray.com/couchdb-rpm/el$releasever/$basearch/
gpgcheck=0
repo_gpgcheck=0
enabled=1

Save the file and close it.

Then, the EPEL repository must be enabled. You can do it quickly, with the following command

:~# dnf install epel-release

If you want more information about how to enable the EPEL repository, I recommend you to read our post:

How to enable the EPEL repository on CentOS 8?

After this, we can install couchDB with the following command:

:~# dnf install couchdb

And that’s it. However, before using it, there are some settings to be made.

Preparing CouchDB for the first use

Remember that CouchDB works through port 5984. So, the first thing is to open that port in the firewall.

:~# firewall-cmd --add-port=5984/tcp --permanent --zone=public
Success

And then, restart the firewall to apply the changes.

:~# firewall-cmd --reload
Success

Now we have to enable the CouchDB web interface.

So, open the CouchDB configuration file and find the admins section and set a password there for the admin user.

:~# nano /opt/couchdb/etc/local.ini

admin = your-password

Then go to the chttpd section in the same file and uncomment the port and bind_address lines. In the port you can change the default port of the application. And in Bind_address the IP address that serves the interface. If you are going to use a cluster, you must type 0.0.0.0.

port = 5984
bind_address = 0.0.0.0

Now if you can, save and close the file.

Finally, the CouchDB service begins. It is also a good idea to enable it to start with the system.

:~# systemctl enable couchdb
:~# systemctl start couchdb

CouchDB on CentOS 8

Now open your favorite web browser and go to http://your-server:5984/_utils and you will see the Login screen.

Just type your credentials and click on the Log in button. You will see this:

Finally, you can test the installation.

So, enjoy it.

Conclusion

CouchDB is clearly oriented to the professional web sector. However, its learning curve is low with respect to its power. Despite this, CouchDB is easily installable as we have seen.

Apache CouchDB documentation

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The post How to install Apache CouchDB on CentOS 8? appeared first on Linux Windows and android Tutorials.

CouchDB is a database manager for the web. It takes care of saving and storing NoSQL type data for server-side applications. It is widely used and its learning curve is very low.

On the other hand, CouchDB places a lot of emphasis on data replication as a persistent way to obtain data. That is, we will be able to connect multiple nodes and from there do the replication.

Of course, there are a lot of features and reasons why this project of the Apache Foundation is so important today.

So, let us start.

Install CouchDB on Debian 10

Apache CouchDB has installers for Linux. There is even a package repository that makes it very easy to install. In this sense, it is convenient to use it.

First, add the CouchDB repository for Debian 10.

:~$ echo "deb https://apache.bintray.com/couchdb-deb buster main" | sudo tee -a /etc/apt/sources.list
deb https://apache.bintray.com/couchdb-deb buster main

To secure the installation, it is necessary to add the GPG key to the repository. However, some necessary packages must be installed first:

:~$ sudo apt install curl gnupg

Once we have them installed, we can add the GPG key.

:~$ curl -L https://couchdb.apache.org/repo/bintray-pubkey.asc | sudo apt-key add -
OK

Now, we have to refresh the APT cache and then install CouchDB on Debian 10.

:~$ sudo apt update
:~$ sudo apt install couchdb

During the installation, we will be asked to make some small adjustments.

First, if couchdb will work on a node, or if we are configuring a cluster.

Then, we will be able to establish the IP address of the cluster or node. In this case, by choosing the address 0.0.0.0 we can make the equipment accessible to all the network interfaces.

Then, you need to define a strong password. After that, Apache CouchDB is ready to work.

Using the CouchDB web interface

Managing Apache CouchDB is really easy thanks to its powerful web interface. So let’s get to it.

Open your favorite web browser and go to http://your-server:5984/_utils. Remember that in “your-server” you have to put the IP address of the server or its DNS.

As you can see, the application uses port 5984. So, if you have a firewall working, you have to open that port.

Well, you will see this screen:

The username is admin and the password that you have defined before. Once you have done that, you will see this:

Then, it is a good idea to verify that the entire installation has been a success. For this, on the left side, there is a button that has a check mark. Click on it and then on the Verify installation button.

As you can see in the picture, the installation has been a success.

Finally, you can configure a cluster or a specific node. This is already to your needs.

So, that is it. You can start to work.

Conclusion

Apache CouchDB is a database manager clearly focused on the professional environment, but this does not prevent it from being used in learning and personal environments. So today you have learned how to install it on a server with Debian 10.

Please share this post and join our Telegram channel.

The post How to install Apache CouchDB on Debian 10? appeared first on Linux Windows and android Tutorials.

CouchDB is a database manager for the web. It takes care of saving and storing NoSQL type data for server-side applications. It is widely used and its learning curve is very low.

On the other hand, CouchDB places a lot of emphasis on data replication as a persistent way to obtain data. That is, we will be able to connect multiple nodes and from there do the replication.

Of course, there are a lot of features and reasons why this project of the Apache Foundation is so important today.

So, let us start.

Install CouchDB on Debian 9

The application is available to be installed on various operating systems. Obviously, Linux has prepared installers. Even for Debian 9, there is a package repository of its own. This facilitates the installation of CouchDB quite a bit since we can do it from APT.

It is recommended that you read our post about APT.

So the first step is to connect to your server and run this command as root:

:~# echo "deb https://apache.bintray.com/couchdb-deb stretch main"   | tee -a /etc/apt/sources.list
deb http://apache.bintray.com/couchdb-deb stretch main

Next, you have to import the GPG key for the repository.

:~# curl -L https://couchdb.apache.org/repo/bintray-pubkey.asc | apt-key add -
OK

image

Next, install CouchDB on Debian 9 by running the following command:

:~# apt update
:~# apt install couchdb

During the installation, you will have to configure some things. First of all, you need to know if it is for a single node or for a cluster.

Then, you will have to define the IP address where the instance will be accessed. If you set 0.0.0.0 you will be able to access from any IP address.

And finally, define a root password.

So, that is it. Let us test it.

Testing CouchDB

The best way to test if everything went well is to access the CouchDB web GUI. For this, it is necessary that in your firewall you have opened port 5984. In case you use UFW you could do it in the following way.

:~# ufw allow 5984/tcp

Next, open your web browser and go to http://Your-server:5984/_utils and now you can log in.

And you can check the databases.

So, that is it.

Conclusion

CouchDB is clearly oriented to the professional web sector. However, its learning curve is low with respect to its power. Despite this, CouchDB is easily installable as we have seen.

Please share this post with your friends.

The post How to install CouchDB on Debian 9? appeared first on Linux Windows and android Tutorials.

CouchDB is a database manager oriented to NoSQL documents belonging to the Apache foundation. Its main strength is its focus on scalability. In addition, it allows you to run a single logical database server on any number of servers or VMs. Of course, it is Open source. So, you can join the community.

On the other hand, CouchDB takes the reliability of the data very seriously and its replication protocol makes it a safe bet to carry out your personal projects without data problems.

So, let’s install Apache CouchDB.

1. Install Apache web server

So, the first step is to install Apache web server. It enjoys great popularity among developers for its ease of installation and its great compatibility with multiple applications.

To install it, run this command:

:~$ sudo apt install apache2

Next, enable and start the Apache web server service.

:~$ sudo systemctl enable apache2
:~$ sudo systemctl start apache2

Now, open your web browser and go to http://IP_SERVER. If everything went OK, you will see this image.

Apache web server is correctly installed.

2. Install Apache CouchDB

CouchDB is a great application but is not included by default in the main Ubuntu repositories. Therefore, it is necessary to install it from an external one.

First, add the repository.

:~$ echo "deb https://apache.bintray.com/couchdb-deb bionic main"  | sudo tee -a /etc/apt/sources.list

Next, sign the added repository:

:~$ curl -L https://couchdb.apache.org/repo/bintray-pubkey.asc | sudo apt-key add -

Then, install CouchDB.

:~$ sudo apt update && sudo apt install couchdb

During the installation process, you will need to configure CouchDB. The first question is how to configure CouchDB. There are 3 options, Standalone for a single server; clustered if you will use a cluster or none if you want to configure it manually.

After this, it is necessary to configure the network interface of the CouchDB node. In the image are the instructions, however, it is recommended 0.0.0.0.0 for you to be able to access from all networks.

Finally, set a password for admin user.

Next, start and enable the service.

:~$ sudo systemctl start couchdb
:~$ sudo systemctl enable couchdb

Finally, open your web browser and go to http://YOUR_IP:5984/_utils and access the web interface to manage the program.

And that’s it.

Conclusion

CouchDB is a fairly new program that belongs to Apache. This guarantees us a fairly stable, reliable and Open source product to handle NoSQL databases.

Please share this article with your friends.

The post How to install Apache CouchDB on Ubuntu 18.04? appeared first on Linux Windows and android Tutorials.