This page describes the function of activation keys in Magnolia, what they are used for, possible reasons for their replacement and how to overcome issues which may occur during the replacement process.
Magnolia uses a pair of keys for the publishing process.
|Activation is used here as a technical term for publishing content from an author instance to public instances. Both the private key and the public key are involved in this process.|
Both keys are stored in a file called
magnolia-activation-keypair.properties in the filesystem. The path to
this file is configured in the Magnolia
magnolia.author.key.location. The file and the keys are created during
the installation of a Magnolia author instance.
The public key is stored also in the
config JCR workspace at
On the author instance the public key is copied to the
workspace during the installation phase.
During an publishing process the keys work together. On the author instance both the private and the public keys are used to encrypt and sign publication packages. On the public instance, the public key is required to decrypt the incoming publication package.
Publishing requires to have the same public key on the author and on the public instances.
If there already is a public key on the public instances, and if you re-generate the key on the author instance, publishing will no longer work. (See regenerating the keys.)
If you need to regenerate the key pair, you must propagate the public key to the public instances.
Manager module uses the public activation key to
hash plain text
passwords. The public key is used for both encryption and decryption. If
you change the public key, passwords managed by the Password manager
become unusable and you must <<Re-establishing the passwords in the Passwords app, re-enter
As long as your system is not compromised, do not create new keys.
Only if your system running the author instance is corrupted, regenerate the key pair on the author instance and propagate the new public key to the public instances.
Create a new key pair only if it is necessary!
If you already have a public key on the author instances, and if you regenerate the key pair afterward, your system gets into a state where you can no longer publish any content. This means that you cannot publish the newly generated key either!
If you are using the Password manager module, you may lose access to third-party systems and connectors due to the public key change.
Propagate the new public key to the author instance as soon as possible. In case you are using passwords managed by the Password manager, re-establish the passwords as well.
The re-creation of the key pair must be done on the author instance.
Open the Publishing Tools app and click on Generate new key. The
system will create both keys and store them in the
magnolia-activation-keypair.properties file. In addition, the system
will store the public key in the author system’s JCR.
If you have an old public key on the public instances after you have regenerated new keys on the author instance, your system is in a state where you cannot publish content. If this situation arises, there are two ways to propagate the new public key to the public instances:
Option I: Copy the
/server/activation@publicKeyproperty, stored in the
configworkspace, from the author instance to each public instance.
Option II: Delete the
/server/activation@publicKeyproperty in the
configworkspace on every public instance.
In both cases, publishing will work again. Using Option II the new public key is transferred to the public instances during the first publishing after the deletion of the property.
|The Option II can be considered less secure. As long as there is no public key on the author instance, in theory, an unauthorized publishing of content by somebody else could take place. If you choose Option II, you should carry out a publication immediately after the deletion.|
You can delete or set the
publicKey property on the
/server/activation node in the
Manually via the Configuration app.
Via REST, which is explained in the next section.
For the deletion option, you can use the Magnolia Properties endpoint API. This approach can be handy if you want to create scripts to replace the public key on your author instances without the need of logging in the Admincentral UI of public instances.
We assume that you have read and understood REST security.
See REST security for more information.
This said the following shows what a REST call done with
curl -X DELETE https://public1.example.com/.rest/properties/v1/config/server/activation/publicKey \ --user johns-user-name:johns-secret-password
curl -X DELETE http://localhost:8080/magnoliaPublic/.rest/properties/v1/config/server/activation/publicKey \ --user superuser:superuser
WARNING: Always use SSL/HTTPS for REST calls containing a username and password!
The user who executes a REST call also needs:
If you have more than one public instance, you must execute the REST call on each public instance.
Publish some content immediately after key deletion to enforce the propagation of the new public key from the author instance to the public instances. You can do this also via REST by utilizing the Commands endpoint API.
To automate things: Create a distinct user and a distinct role granting the user the required JCR write permissions and Web access for the REST calls.
Add/apply further security layer(s) on Apache or at a network level to restrict the REST calls – for example – to more specific paths such as:
Add/apply subnet-based or IP range based restrictions.
If you are using the Password manager module and if you had to regenerate the activation key pair, proceed with the following steps only after you have replaced the new public key on the public instances:
Open the Passwords app on the author instance.
Use the Edit password action to re-enter the password for each item.
Publish all the password items which are required on the public instances.
If you are running a cloud installation managed by Magnolia, Magnolia is responsible for the integrity of the system. In this case you have no obligation to regenerate the keys. If you have accidentally created a new key pair on an author instance, please contact Cloud Help Desk as soon as possible.
If you manage your own, custom-built cloud solution to run a Magnolia installation, we highly recommend – within the possibilities of your infrastructure – setting up an automated system to replace the public key on your public instances.
The Client Hosted Magnolia offer does not provide a one-click, out-of-the-box solution to replace the public keys on the author instances.
|See Replacing the public key on public instances via REST for inspiration.|