Available by default on Expert and Angel licenses, but optional on the others.

In this article

• Apache
• MySQL
• PostgreSQL
• Nginx
• Varnish
• Redis
• Memcached

1. Install the package
   On Debian

   apt-get install quanta-agent-apache

   On CentOS

   yum install quanta-agent-apache

2. Check that the status module is correctly configured on your server with the command:

   curl http://127.0.0.1/server-status

3. If this is not the case, it will be necessary to implement the mod_status module of Apache:
   https://httpd.apache.org/docs/current/mod/mod_status.html
   
   
4. If you want to modify the URL used by our module, you can modify the file:
   /etc/quanta/modules.d/apache.yml
   
   
5. Restart the agent
   On Debian

   /etc/init.d/quanta-agent restart

   On CentOS

   service quanta-agent restart

You should see the metrics appear in Quanta within a few minutes 

MYSQL 

1. Install the package
   On Debian

   apt-get install quanta-agent-mysql

   On CentOS

   yum install quanta-agent-mysql

2. We recommend that you create a MySQL user dedicated to our probe, although it is not mandatory. To do this, you could use the command:
   

   echo "CREATE USER quanta@localhost IDENTIFIED BY 'supersecret'; " | mysql -u root -p

3. Enter the user name and password you have chosen in the file:
   /etc/quanta/modules.d/mysqlstat.yml
4. Restart the agent
   On Debian

   /etc/init.d/quanta-agent restart

   On CentOS

   service quanta-agent restart

You should see the metrics appear in Quanta within a few minutes

Install for PostgreSQL

1. Install the package
   On Debian

   apt-get install quanta-agent-postgresql

   On CentOS

   yum install quanta-agent-postgresql

2. We recommend that you create a PostgreSQL user dedicated to our probe, although it is not mandatory. To do this, use the command:
   

   echo "CREATE ROLE quanta LOGIN password 'supersecret';" | sudo -u postgres psql postgres

3. Enter the user name and password you have chosen in the file:
   /etc/quanta/modules.d/postgresql.yml
4. Restart the agent
   On Debian

   /etc/init.d/quanta-agent restart

   On CentOS

   service quanta-agent restart

You should see the metrics appear in Quanta within a few minutes

Nginx 

1. Install the package
   On Debian

   apt-get install quanta-agent-nginx

   On CentOS

   yum install quanta-agent-nginx

2. Verify that the Nginx status module is correctly configured on your server with the command:
   

   curl http://127.0.0.1/status

3. If this is not the case, you will need to enter the appropriate configuration in your Nginx configuration as described here:
   http://nginx.org/en/docs/http/ngx_http_stub_status_module.html
4. If you want to modify the URL used by our module, you can modify the file:
   /etc/quanta/modules.d/nginx.yml
5. Restart the agent
   On Debian

   /etc/init.d/quanta-agent restart

   On CentOS

   service quanta-agent restart

You should see the metrics appear within a few minutes

Varnish 

1. Install the package
   On Debian

   apt-get install quanta-agent-varnish

   On CentOS

   yum install quanta-agent-varnish

2. If you are using several Varnish instances, you will have to indicate for which one you wish to get your data from, you will have to add the following lines at the end of the file: /Etc/quanta/modules.d/varnish.yml
   

   varnish:
       instance: name_of_your_instance

   (This setting is available from version 1.1.0 of the agent)
3. Restart the agent
   On Debian

   /etc/init.d/quanta-agent restart

   On CentOS

   service quanta-agent restart

You should see the metrics appear within a few minutes

Redis 

1. Install the package
   On Debian

   apt-get install quanta-agent-redis

   On CentOS

   yum install quanta-agent-redis

2. If you do not use the default port (6379) for Redis, you can modify it in the file
   /etc/quanta/modules.d/redis.yml
3. If you're using the Redis authentication, you will have to uncomment the line and state the password in the file: /etc/quanta/modules.d/redis.yml
   

   auth: password

4. If you are using several Varnish instances, you will have to indicate for which one you wish to get your data from, you will have to add the following lines at the end of the file: /Etc/quanta/modules.d/redis.yml
   

   instance: name_of_your_instance

5. Restart the agent
   On Debian

   /etc/init.d/quanta-agent restart

   On CentOS

   service quanta-agent restart

You should see the metrics appear in Quanta within a few minutes

 Memcached 

1. Install the package
   On Debian

   apt-get install quanta-agent-memcached

   On CentOS

   yum install quanta-agent-memcached

2. If you do not use the default port (11211) for Memcached, you can modify it in the file
   /etc/quanta/modules.d/memcached.yml
3. Restart the agent
   On Debian

   /etc/init.d/quanta-agent restart

   On CentOS

   service quanta-agent restart

You should see the metrics appear in Quanta within a few minutes