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If you want the data flow to use HTTPS, that is a bit more complicated; below is a description of how to do it. (Tested with NiFi 12.120.1 0-M1 and MiNiFi c++ 0.715.0.)
Step-by-step guide
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- Create a self-signed certificate
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- ; there are many how-tos on the internet. Below, we'll assume that your generated files are /opt/certs/agent-cert.pem and /opt/certs/agent-key.pem; the CN of the certificate is "my-agent-ID".
Install NiFi. When you a access https://<hostname>:9443/nifi/ the first time in your browser, you will get a "Potential Security Risk Ahead" warning about NiFi's self-signed certificate, but you can click Advanced → Accept the Risk and Continue.
Add the following settings to your NiFi installation's
nifi.properties
file- Download the latest version of
nifi-toolkit
from https://nifi.apache.org/download.html Unpack the contents:
Code Block tar xzvf nifi-toolkit-1.12.1-bin.tar.gz -C /opt/nifi/
Create a directory for the certificate files:
Code Block mkdir -p /opt/nifi/data/ssl
Determine the hostname that will be used to access NiFi from web browsers and from MiNiFi. Then generate the certificates using tls-toolkit:
Code Block # SetSite theto location of Java; the executable should be ${JAVA_HOME}/bin/java export JAVA_HOME=... # Replace <hostname> with the hostname used to access NiFi /opt/nifi/nifi-toolkit-1.12.1/bin/tls-toolkit.sh standalone -n "<hostname>" -C "CN=minifi, OU=NIFI" -o /opt/nifi/data/ssl # Unpack the certificate and key from the .p12 bundle # Enter the contents of CN=minifi_OU=NIFI.password as the password when prompted (both times) openssl pkcs12 -in /opt/nifi/data/ssl/CN=minifi_OU=NIFI.p12 -out /opt/nifi/data/ssl/nifi-rest.key -nocerts -nodes openssl pkcs12 -in /opt/nifi/data/ssl/CN=minifi_OU=NIFI.p12 -out /opt/nifi/data/ssl/nifi-rest.crt -clcerts -nokeys
Protect the files by ensuring that only the current user have access to them:
Code Block chmod 755 /opt/nifi/data/ssl chmod 600 /opt/nifi/data/ssl/CN\=minifi_OU\=NIFI.* chmod 700 /opt/nifi/data/ssl/<hostname>
Copy the value of the properties in the
nifi.remote
,nifi.web
,nifi.security
sections from/opt/nifi/data/ssl/<hostname>/nifi.properties
to your NiFi installation'snifi.properties
file, except the for the following two, which should be set like this:Code Block nifi.security.keystore=/opt/nifi/data/ssl/<hostname>/keystore.jks nifi.security.truststore=/opt/nifi/data/ssl/<hostname>/truststore.jks
and add the following settings to your NiFi installation's
nifi.properties
file:Code Block nifi.rest.host=<hostname> nifi.rest.keystorePath=/opt/nifi/data/ssl/CN=minifi_OU=NIFI.p12 nifi.rest.keystorePassword=/opt/nifi/data/ssl/CN=minifi_OU=NIFI.password nifi.rest.keystoreType=PKCS12
Site properties nifi.remote.input.host=localhost nifi.remote.input.secure=true nifi.remote.input.socket.port=7777 nifi.remote.input.http.enabled=true
Export the NiFi certificate from the NiFi trust store, and import the MiNiFi agent certificate into the NiFi trust store:
Code Block keytool -exportcert -alias nifi-cert -rfc -keystore truststore.p12 > /opt/certs/nifi-cert.pem keytool -importcert -alias agent-cert -file /opt/certs/agent-cert.pem -keystore truststore.p12
keytool will prompt you for the truststore password; you can get this from the
nifi.properties
file.Add the agent ID (which is the CN of the agent certificate) as the "Initial User Identity 1" value in the "userGroupProvider" Uncomment the
file-provider
section ofauthorizers.xml
in your NiFi installation, and set the Initial Admin Identity:Code Block <authorizer><userGroupProvider> <identifier>file-user-group-provider</identifier> <class>org.apache.nifi.authorization.FileAuthorizer<FileUserGroupProvider</class> <property name="Authorizations File">./conf/authorizations.xml</property> <property name="Users File">./conf/users.xml</property> <property name="Initial AdminUser Identity">CN=minifi, OU=NIFI</property> <property name="Legacy Authorized Users File"></property> <!-- Provide the identity (typically a DN) of each node when clustered, see above description of Node Identity. 1">my-agent-ID</property> </userGroupProvider>
and restart NiFi; it will create a new user in
users.xml
which looks like this:Code Block <tenants> <groups/> <users> <property<user nameidentifier="Node Identity 1"></property> --9a889e09-6e86-360a-a324-8f3ee341842a" identity="my-agent-ID"/> </authorizer>
and restart NiFi; it will create a new user with your Initial Admin Identity name in
users.xml
.users> </tenants>
Add authorizations for your user in
authorizations.xml
in your NiFi installation, copying the user identifier fromusers.xml
:Code Block <authorizations> <!-- generate UUIDs for the policy identifiers --> <policies> <policy identifier="1f6ae57a-08bc-11eb-9242-bf69163fde10" resource="/site-to-site" action="R"> <!-- copy the user identifier from users.xml --> <user identifier="9cd6ec429a889e09-b3da6e86-3a3a360a-8405a324-7264746e0e428f3ee341842a"/> </policy> <policy identifier="282818e0-08bc-11eb-8508-2b51c9d70d42" resource="/site-to-site" action="W"> <user identifier="9cd6ec429a889e09-b3da6e86-3a3a360a-8405a324-7264746e0e428f3ee341842a"/> </policy> <!-- copy the port identifier from Remote Process Groups/Input Ports/id in the minifi config.yml --> <policy identifier="f512f796-7afb-4c9f-ab68-b5eaf6d5d0cf" resource="/data-transfer/input-ports/c171f9da1342ea64-689f018d-41e21000-98c4a5cf-9d785c59c3067bda6830909b" action="R"> <user identifier="9cd6ec429a889e09-b3da6e86-3a3a360a-8405a324-7264746e0e428f3ee341842a"/> </policy> <policy identifier="b4e836ee-d526-4e16-8bf3-ee1d8fa3d5e6" resource="/data-transfer/input-ports/c171f9da1342ea64-689f018d-41e21000-98c4a5cf-9d785c59c3067bda6830909b" action="W"> <user identifier="9cd6ec429a889e09-b3da6e86-3a3a360a-8405a324-7264746e0e428f3ee341842a"/> </policy> <!-- you will also need a pair of policies for resource="/data-transfer/output-ports/..." if you want S2S data transfer from NiFi to MiNiFi --> </policies> </authorizations>
Then restart NiFi again, and test that you can connect to it using https:
Code Block |
---|
# This should give a large HTML response curl -k --key /opt/nifi/data/ssl/nifi-rest.keycerts/agent-key.pem --cert /opt/nifi/data/ssl/nifi-rest.crtcerts/agent-cert.pem https://<hostname>:94438443/nifi/ # This should give a JSON response curl -k --key /opt/nifi/data/ssl/nifi-rest.keycerts/agent-key.pem --cert /opt/nifi/data/ssl/nifi-rest.crtcerts/agent-cert.pem https://<hostname>:94438443/nifi-api/site-to-site/ |
For Mac, https://kylo.readthedocs.io/en/v0.10.0/security/ConfigureNiFiWithSSL.html has instructions on how to tell your browser to trust this self-signed certificate. On Firefox/Windows, follow these steps: https://support.globalsign.com/digital-certificates/digital-certificate-installation/install-client-digital-certificate-firefox-windows. On Firefox/Linux, the steps are similar; the View Certificates dialog is at Preferences → Privacy & Security (scroll to the bottom). After you have added the CN=minifi_OU=NIFI.p12
client certificate under Your Certificates (enter the contents of CN=minifi_OU=NIFI.password
when prompted), and you try to access https://<hostname>:9443/nifi/, you will still get a "Potential Security Risk Ahead" warning about the certificate, but now you can click Advanced → Accept the Risk and Continue (you only need to do this the first time).
If everything is OK so far, then configure MiNiFi to use the certificatesecure site-to-site:
Set up the certificate certificates in
minifi.properties
:Code Block nifi.remote.input.secure=true nifi.security.need.ClientAuth=true nifi.security.client.certificate=/opt/nifi/data/ssl/nifi-rest.crtcerts/agent-cert.pem nifi.security.client.private.key=/opt/nifi/data/ssl/nifi-rest.keycerts/agent-key.pem nifi.security.client.pass.phrase=<key passphrase if any> nifi.security.client.ca.certificate=/opt/nifi/datacerts/ssl/nifi-cert.pem # These are not needed #nifi.rest.api.user.name= #nifi.rest.api.password=
Update the NiFi address in
config.yml
by changinghttp
tohttps
and changing the port from 8080 to 9443 8443 in the Remote Process Group:Code Block Remote Process Groups: - id: 1ca9d943-0175-1000-2188-4d25f7418459 name: https://<hostname>:94438443/nifi/ url: https://<hostname>:94438443/nifi/ comment: '' timeout: 30 secs yield period: 10 sec transport protocol: RAW proxy host: '' proxy port: '' proxy user: '' proxy password: '' local network interface: '' Input Ports: - id: c171f9da-689f-41e2-98c4-9d785c59c306 name: c171f9da-689f-41e2-98c4-9d785c59c306 comment: '' max concurrent tasks: 1 use compression: true Output Ports: []
And restart MiNiFi. Note that the site-to-site port you configured in NiFi will be used for communication, but in the MiNiFi
config.yml
you need to specify the main NiFi port 8443, NOT the site-to-site port (7777 in the example above).
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