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This document describes how to configure Server and Client authentication when setting secure (SSL) based authentication with Client Certificates to create secure connections between Chariot, MQTT Engine and MQTT Transmission.
Note |
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Available in Chariot version 2.3.1 and greater |
Table of Contents
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├── ca/
│ ├── engine/
│ ├── server/
│ └── transmission/
└── certs/
├── engine/
├── server/
└── transmission/
When creating a certificate hierarchy, the Root CA is the highest level of authority in the certificate hierarchy, and is responsible for issuing CA certificates to lower-level CAs, such as the Server CA and Client CAs. When the Root CA issues a CA certificate to a lower-level CA, it signs the certificate with its private key, which allows clients to verify the authenticity of the CA certificate using the Root CA's public key.
The Server CA and Client CA, in turn, use their own private keys to sign SSL certificates for servers and clients, respectively. These SSL certificates can then be verified by clients using the CA certificate issued by the Root CA.
The Root CA should sign the CA certificates for both the Server CA and Client CA, while the Server CA and Client CA themselves are responsible for signing SSL certificates for servers and clients, respectively.
These are the steps that need to be completed for the certificate hierarchy:
Generate MQTT Engine Client certificate signed with the Engine CA’s private key
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Tip |
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The command line tools openssl and keytool are used. Install the OpenSSL command line tool and add the OpenSSL PATH in the Windows environment variables if necessary. Keytool is part of the standard java distribution and is located in the bin sub-directory of your jdk installation directory. Chariot includes a java distribution under the <chariot_install_dir>/lib/runtime/jdk11.0.12_7/bin folder.Add the keytool PATH in the Windows environment variables if necessary. You will need to restart your any open command window to pick up this configuration change. |
As a first step, we need to generate the certificate hierarchy for Chariot, MQTT Engine and MQTT Transmission.
Create the following folder structure on your local drive to hold the various certificates in the hierarchy that we will be generating:
chariotcerts/
├── ca/
└── certs/
├── engine/
└── transmission/
When creating a certificate hierarchy, the Root CA is the highest level of authority in the certificate hierarchy, and is responsible for issuing signed certificates, such as the MQTT Engine and MQTT Transmission certificates that will be shown below. When the Root CA issues a certificate, it signs the certificate with its private key, which allows the MQTT Server to verify the authenticity of the certificates using the Root CA's public key.
Note this tutorial only covers client based authentication using certificates. It does not cover setting up TLS/SSL on an MQTT Server which is used encyrpt communication between MQTT clients and the MQTT Server. This must also be done and information can be found here on how to set this up.
These are the steps that need to be completed for the certificate hierarchy:
Generate MQTT Engine Client certificate signed with the Root CA’s private key
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Generate a private key file (ca.key) for the Root CA using the command below. You will be required may choose to enter a pass phrase passphrase to be associated with the ca.key file as well.
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Make note of this passphrase if you set one for the Root CA private key file (ca.key) as it will be used multiple times. |
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openssl genrsa -des3 -out ca/ca.key 20484096 |
Generate a self-signed certificate (ca.crt) for the Root CA using the command below. This command generates a new self-signed X.509 certificate named "ca.crt" valid for 3650 days (10 years) using the RSA private key "ca.key". A "ca. srl" file will also be created containing the signed certificate's unique serial number. You will be required to enter the pass phrase associated with the private key file "ca.key".
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openssl req -new -x509 -key ca/ca.key -days 3650 -out ca/ca.crt |
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There are a number of fields associated with the creation of the certificate. The required fields are: Country Name (2 letter code) []: State or Province Name (full name) []: Locality Name (eg, city) []: Organization Name (eg, company) []: Organizational Unit Name (eg, section) []: We set this to CA Common Name (eg, fully qualified host name) [] We set this to the FQDN of the Chariot server Email Address []: |
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. Fill them out with your relevant details. |
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$ openssl req -new -x509 -key ca/ca.key -days 3650 -out ca/ca.crt
Enter pass phrase for ca/ca.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
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Country Name (2 letter code) [AU]:US
State or Province Name (full name) [Some-State]:KS
Locality Name (eg, city) []:Stilwell
Organization Name (eg, company) [Internet Widgits Pty Ltd]:Cirrus Link Solutions
Organizational Unit Name (eg, section) []:Support
Common Name (e.g. server FQDN or YOUR name) []:CLS Example Root CA
Email Address []:
$ |
You should have the following files created:
chariotcerts/
├── ca/
├── ca.crt
├── ca.key
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Depending on the version of openSSL that you are using, you may see additional .srl files created which contain the signed certificate's unique serial number. These files are not used directly by the modules and not included in the certificate hierachy displayed above. |
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Generate private key in PSCK8 format (engine.key) for MQTT Engine using the command below.
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Generate a private key file (serverCA.key) for the Server CA using the command below. You will be required to enter a pass phrase to be associated with the serverCA.key file.
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openssl genrsa -des3 -out ca/server/serverCA.key 2048 |
Generate a Certificate Signing Request (CSR) for the server CA using the command below. This command generates a new CSR named "serverCA.csr’ using the RSA private key "serverCA.key" and you will be required to enter the pass phrase created in the previous step.
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openssl req -new -key ca/server/serverCA.key -out ca/server/serverCA.csr |
There are a number of fields associated with the creation of the certificate. The required fields are:
Country Name (2 letter code) []:
State or Province Name (full name) []:
Locality Name (eg, city) []:
Organization Name (eg, company) []:
Organizational Unit Name (eg, section) []: We set this as Server CA
Common Name (eg, fully qualified host name) []: We set this as the FQDN of the Chariot server
Email Address []:
Extra attributes to be sent with the certificate request are:
A challenge password []: Any alpha-numeric phrase
Sign the Server CA with the Root CA using the command below. This command will sign the CSR "serverCA.csr" with the Root CA certificate ‘ca.crt’ and RSA private key ‘ca.key’, creating a new X.509 certificate named ‘serverCA.crt’ valid for 3650 days (10 years). A "serverCA.srl" file will also be created containing the signed certificate's unique serial number. You will be required to enter the pass phrase associated with the private key file "ca.key".Code Block | ||
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openssl |
genrsa - |
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out certs/engine/engine.key 4096 |
Generate a Certificate Signing Request (CSRGenerate a private key file (engineCA.key) for MQTT Engine CA using the command below. You will be required to enter a pass phrase to be associated with the engineCA.key file. This command generates a new CSR named "engine.csr’ using the RSA private key "engine.key".
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openssl genrsareq -des3new -outkey cacerts/engine/engineCAengine.key 2048 |
-out certs/engine/engine.csr |
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There are a number of fields associated with the creation of the certificate. Fill them out with your relevant details |
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$ openssl req -new -key cacerts/engine/engineCAengine.key -out cacerts/engine/engineCAengine.csr | |||||
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You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
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Country Name (2 letter code) [AU]:US
State or Province Name (full name) [Some-State]:KS
Locality Name (eg, city) []:Stilwell
Organization Name (eg, company) [Internet Widgits Pty Ltd]:Cirrus Link Solutions
Organizational Unit Name (eg, section) []:Support
Common Name (e.g. server FQDN or YOUR name) []:EngineDevice
Email Address []:
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
$ |
Sign the MQTT Engine Client CSR with the Engine Sign the MQTT Engine CA with the Root CA using the command below. This command will sign the CSR "engineCAengine.csr" with the Root CA certificate ‘ca.crt’ and Root CA's RSA private key ‘ca.key’, creating a new X.509 certificate named ‘engineCA‘engine.crt’ valid for 3650 365 days (10 years). An "engineCA.srl" file will also be created containing the signed certificate's unique serial number1 year). You will be required to enter the pass phrase passphrase associated with the private key file "ca.key".
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openssl x509 -req -in cacerts/engine/engineCAengine.csr -CA ca/ca.crt -CAkey ca/ca.key -CAcreateserial -out cacerts/engine/engineCAengine.crt -days 3650365 |
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Generate a private key file in PKCS8 format (transmissionCAtransmission.key) for MQTT Transmission CA using the command below. You will be required to enter a pass phrase to be associated with the transmissionCA.key file.
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openssl genrsa -des3 -out cacerts/transmission/transmissionCAtransmission.key 20484096 |
Generate a Certificate Signing Request (CSR) for the MQTT Transmission CA using the command below. This command generates a new CSR named "transmissionCAtransmission.csr’ using the RSA private key "transmissionCAtransmission.key" and you will be required to enter the pass phrase created in the previous step.
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openssl req -new -key cacerts/transmission/transmissionCAtransmission.key -out cacerts/transmission/transmissionCAtransmission.csr |
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There are a number of fields associated with the creation of the certificate. The required fields are: Country Name (2 letter code) []: State or Province Name (full name) []: Locality Name (eg, city) []: Organization Name (eg, company) []: Organizational Unit Name (eg, section) []: We set this as MQTT Transmission CA Common Name (eg, fully qualified host name) []: We set this as the FQDN of the Chariot server Email Address []: Extra attributes to be sent with the certificate request are: A challenge password []: Any alpha-numeric phrase |
Sign the MQTT Transmission CA with the Root CA using the command below. This command will sign the CSR "transmissionCA.csr" with the Root CA certificate ‘ca.crt’ and RSA private key ‘ca.key’, creating a new X.509 certificate named ‘transmissionCA.crt’ valid for 3650 days (10 years). An "transmissionCA.srl" file will also be created containing the signed certificate's unique serial number. You will be required to enter the pass phrase associated with the private key file "ca.key".
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openssl x509 -req -in ca/transmission/transmissionCA.csr -CA ca/ca.crt -CAkey ca/ca.key -CAcreateserial -out ca/transmission/transmissionCA.crt -days 3650 |
You should have the following files created:
├── ca/
├── ca.crt
├── ca.key
├── ca.srl
├── engine/
│ ├── engineCA.crt
│ ├── engineCA.csr
│ ├── engineCA.key
│ └── engineCA.srl
├── server/
│ ├── serverCA.crt
│ ├── serverCA.csr
│ ├── serverCA.key
│ └── serverCA.srl
└── transmission/
├── transmissionCA.crt
├── transmissionCA.csr
├── transmissionCA.key
└── transmissionCA.srl
...
Fill them out with your relevant details. |
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$ openssl req -new -key certs/transmission/transmission.key -out certs/transmission/transmission.csr
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:US
State or Province Name (full name) [Some-State]:KS
Locality Name (eg, city) []:Stilwell
Organization Name (eg, company) [Internet Widgits Pty Ltd]:Cirrus Link Solutions
Organizational Unit Name (eg, section) []:Support
Common Name (e.g. server FQDN or YOUR name) []:TransmissionDevice1
Email Address []:
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []: $ |
Sign the MQTT Transmission Client CSR with the Transmission CA using the command below. This command will sign the CSR "transmission.csr" with the Root CA certificate ‘ca.crt’ and Root CA's RSA private key ‘ca.key’, creating a new X.509 certificate named ‘transmission.crt’ valid for 365 days (1 year). You will be required to enter the passphrase associated with the private key file "transmission.key"
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Generate private key in PKCS8 format (server.key) for the Chariot server using the command below.
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openssl genrsa -out certs/server/server.key 2048 |
******* Convert from PKCS8 format to PCKS1 until Chraiot supports PKCS8 format *********
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openssl rsa -in certs/server/server.key -traditional -out certs/server/server.keyopen |
Generate a Certificate Signing Request (CSR) for the Chariot server using the command below. This command generates a new CSR named "server.csr’ using the RSA private key "server.key".
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openssl x509 -req -newin certs/transmission/transmission.csr -keyCA certs/server/serverca/ca.crt -CAkey ca/ca.key -CAcreateserial -out certs/servertransmission/server.csr | ||
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Sign the Server CSR with the Server CA using the command below. This command will sign the CSR "server.csr" with the Server CA certificate ‘serverCA.crt’ and RSA private key ‘serverCA.key’, creating a new X.509 certificate named ‘serverCA.crt’ valid for 3650 days (10 years). You will be required to enter the pass phrase associated with the private key file "serverCA.key".
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openssl x509 -req -in certs/server/server.csr -CA ca/server/serverCA.crt -CAkey ca/server/serverCA.key -CAcreateserial -out certs/server/server.crt -days 365 |
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Generate private key in PSCK8 format (engine.key) for MQTT Engine using the command below.
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openssl genrsa -out certs/engine/engine.key 2048 |
Generate a Certificate Signing Request (CSR) for MQTT Engine using the command below. This command generates a new CSR named "engine.csr’ using the RSA private key "engine.key".
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openssl req -new -key certs/engine/engine.key -out certs/engine/engine.csr |
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There are a number of fields associated with the creation of the certificate. The required fields are:
Country Name (2 letter code) []:
State or Province Name (full name) []:
Locality Name (eg, city) []:
Organization Name (eg, company) []:
Organizational Unit Name (eg, section) []: We set this as MQTT Engine
Common Name (eg, fully qualified host name) []: We set this as the FQDN of the Chariot server
Email Address []:
Extra attributes to be sent with the certificate request are:
A challenge password []: Any alpha-numeric phrase.
Sign the MQTT Engine Client CSR with the Engine CA using the command below. This command will sign the CSR "engine.csr" with the Engine CA certificate ‘engineCA.crt’ and RSA private key ‘engineCA.key’, creating a new X.509 certificate named ‘engineCA.crt’ valid for 3650 days (10 years). You will be required to enter the pass phrase associated with the private key file "engineCA.key".
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openssl x509 -req -in certs/engine/engine.csr -CA ca/engine/engineCA.crt -CAkey ca/engine/engineCA.key -CAcreateserial -out certs/engine/engine.crt -days 365 |
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Generate private key in PKCS8 format (transmission.key) for MQTT Transmission using the command below.
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openssl genrsa -out certs/transmission/transmission.key 2048 |
Generate a Certificate Signing Request (CSR) for MQTT Transmission using the command below. This command generates a new CSR named "transmission.csr’ using the RSA private key "transmission.key".
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openssl req -new -key certs/transmission/transmission.key -out certs/transmission/transmission.csr |
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There are a number of fields associated with the creation of the certificate. The required fields are:
Country Name (2 letter code) []:
State or Province Name (full name) []:
Locality Name (eg, city) []:
Organization Name (eg, company) []:
Organizational Unit Name (eg, section) []: We set this as MQTT Transmission
Common Name (eg, fully qualified host name) []: We set this as the FQDN of the Chariot server
Email Address []:
Extra attributes to be sent with the certificate request are:
A challenge password []: Any alpha-numeric phrase.
Sign the MQTT Transmission Client CSR with the Transmission CA using the command below. This command will sign the CSR "transmission.csr" with the Transmission CA certificate ‘transmissionCA.crt’ and RSA private key ‘transmissionCA.key’, creating a new X.509 certificate named ‘transmissionCA.crt’ valid for 3650 days (10 years). You will be required to enter the pass phrase associated with the private key file "transmissionCA.key".
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openssl x509 -req -in certs/transmission/transmission.csr -CA ca/transmission/transmissionCA.crt -CAkey ca/transmission/transmissionCA.key -CAcreateserial -out certs/transmission/transmission.crt -days 365 |
We have now generated all the certificates and keys needed to setup SSL connections between Chariot and the MQTT Engine and MQTT Transmission modules:
├── ca/
│ ├── ca.crt
│ ├── ca.key
│ ├── ca.srl
│ ├── engine/
│ │ ├── engineCA.crt
│ │ ├── engineCA.csr
│ │ ├── engineCA.key
│ │ └── engineCA.srl
│ ├── server/
│ │ ├── serverCA.crt
│ │ ├── serverCA.csr
│ │ ├── serverCA.key
│ │ └── serverCA.srl
│ └── transmission/
│ ├── transmissionCA.crt
│ ├── transmissionCA.csr
│ ├── transmissionCA.key
│ └── transmissionCA.srl
└── certs/
├── engine/
│ ├── engine.crt
│ ├── engine.csr
│ └── engine.key
├── server/
│ ├── server.crt
│ ├── server.csr
│ └── server.key
└── transmission/
├── transmission.crt
├── transmission.csr
└── transmission.key
Now we are ready to setup SSL connections between two clients (MQTT Engine and Transmission) and the Chariot Server. Here is a summary of what needs to be done:
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Navigate to CONFIGURATION > System > Certificates configuration and upload the files as shown below. Once uploaded, select the Setup SSL button.
Navigate to CONFIGURATION > MQTT Server configuration and Enable Secure as shown below:
By default Chariot comes with an empty truststore file clientcerts.jks which is located in the <chariot_install_dir>/security folder.
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transmission.crt -days 365 |
We have now generated all the certificates and keys needed to setup MQTT Client certificate based authentication connections between Chariot and the MQTT Engine and MQTT Transmission modules:
chariotcerts/
├── ca/
│ ├── ca.crt
│ ├── ca.key
└── certs/
├── engine/
│ ├── engine.crt
│ ├── engine.csr
│ └── engine.key
└── transmission/
├── transmission.crt
├── transmission.csr
└── transmission.key
Now we are ready to setup SSL connections between two clients (MQTT Engine and Transmission) and the Chariot Server.
Here is a summary of what needs to be done:
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Navigate to CONFIGURATION > System > Certificates configuration and upload the files as shown below. Once uploaded, select the Setup SSL button. Use the certificate components created in Secure Chariot MQTT Server communication using SSL/TLS.
File Type | Where to get the file |
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CA Chain | Provided by your Certificate Authority |
Private Key | The key you generated when creating your CSR to submit to your CA |
Certificate | The server certificate provided by your Certificate Authority after you submitted your CSR to them |
Navigate to CONFIGURATION > MQTT Server configuration and Enable Secure as shown below. Select the Update button to save the configuration.
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By default Chariot comes with an empty truststore file clientcerts.jks which is located in the <chariot_install_dir>/security folder.
To view this file, run the command as shown below. You will be required to enter the keystore password and this can be found in the <chariot_install_dir>/conf/com.cirruslink.chariot.system configurationfile as the "trustStorePassword" parameter.
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keytool -list -v -keystore <chariot_install_dir>/security/clientcerts.jks |
You will see that the truststore contains no entries.
Use the following command to add the Root CA certificate to the truststore using the "trustStorePassword" when prompted.
When prompted Trust this certificate? [no]: respond "yes"
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keytool -importcert -file ca/ca.crt -keystore <chariot_install_dir>/security/clientcerts.jks -alias CACertificate |
Use the following command to add the Engine client side certificate to the truststore using the "trustStorePassword" when prompted.
When prompted Trust this certificate? [no]: respond "yes"
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keytool -importcert -file certs/engine/engine.crt -keystore <chariot_install_dir>/security/clientcerts.jks -alias EngineDevice |
Use the following command to add the Transmission client side certificate to the truststore using the "trustStorePassword" when prompted.
When prompted Trust this certificate? [no]: respond "yes"
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keytool -importcert -file certs/transmission/transmission.crt -keystore <chariot_install_dir>/security/clientcerts.jks -alias TransmissionDevice1 |
Once completed, viewing the file will now show three entries similar to below:
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Keystore type: PKCS12
Keystore provider: SUN
Your keystore contains 3 entries
Alias name: cacertificate
Creation date: Feb 7, 2024
Entry type: trustedCertEntry
Owner: CN=CLS Example Root CA, OU=Support, O=Cirrus Link Solutions, L=Stilwell, ST=KS, C=US
Issuer: CN=CLS Example Root CA, OU=Support, O=Cirrus Link Solutions, L=Stilwell, ST=KS, C=US
Serial number: 6f689c58c0f3e7177224c5868b75fcd51bcc2e0f
Valid from: Wed Feb 07 19:43:45 UTC 2024 until: Sat Feb 04 19:43:45 UTC 2034
Certificate fingerprints:
SHA1: 15:BC:A7:28:BE:15:D9:7F:E7:B0:1E:51:4E:A0:0F:57:58:C7:A3:2E
SHA256: 7A:1E:A0:D8:B5:4E:CB:BF:2D:A9:8D:E2:7F:E6:20:3C:B8:2C:11:4F:14:FF:AD:F6:A1:01:58:C0:37:B3:04:A7
Signature algorithm name: SHA256withRSA
Subject Public Key Algorithm: 4096-bit RSA key
Version: 3
*******************************************
*******************************************
Alias name: enginedevice
Creation date: Feb 7, 2024
Entry type: trustedCertEntry
Owner: CN=EngineDevice, OU=Support, O=Cirrus Link Solutions, L=Stilwell, ST=KS, C=US
Issuer: CN=CLS Example Root CA, OU=Support, O=Cirrus Link Solutions, L=Stilwell, ST=KS, C=US
Serial number: 6f689c58c0f3e7177224c5868b75fcd51bcc2e0f
Valid from: Wed Feb 07 19:43:45 UTC 2024 until: Sat Feb 04 19:43:45 UTC 2034
Certificate fingerprints:
SHA1: 15:BC:A7:28:BE:15:D9:7F:E7:B0:1E:51:4E:A0:0F:57:58:C7:A3:2E
SHA256: 7A:1E:A0:D8:B5:4E:CB:BF:2D:A9:8D:E2:7F:E6:20:3C:B8:2C:11:4F:14:FF:AD:F6:A1:01:58:C0:37:B3:04:A7
Signature algorithm name: SHA256withRSA
Subject Public Key Algorithm: 4096-bit RSA key
Version: 3
*******************************************
*******************************************
Alias name: transmissiondevice1
Creation date: Feb 7, 2024
Entry type: trustedCertEntry
Owner: CN=TransmissionDevice1, OU=Support, O=Cirrus Link Solutions, L=Stilwell, ST=KS, C=US
Issuer: CN=CLS Example Root CA, OU=Support, O=Cirrus Link Solutions, L=Stilwell, ST=KS, C=US
Serial number: 6f689c58c0f3e7177224c5868b75fcd51bcc2e11
Valid from: Wed Feb 07 19:52:48 UTC 2024 until: Thu Feb 06 19:52:48 UTC 2025
Certificate fingerprints:
SHA1: 60:7E:A5:6E:47:09:79:FB:A9:FE:24:DB:05:1E:09:54:24:48:19:BD
SHA256: 8A:C8:39:E1:50:8B:BF:35:25:43:C7:B4:66:60:02:1E:AF:4F:C4:11:32:B0:6D:FC:6D:6E:5D:A8:BE:FA:00:0B
Signature algorithm name: SHA256withRSA
Subject Public Key Algorithm: 4096-bit RSA key
Version: 3
*******************************************
******************************************* |
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Using a text editor, set the "clientAuthPolicy" to "required" in the <chariot_install_dir>/conf/com.cirruslink.chariot.server configurationfile.
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clientAuthPolicy="required" |
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You will now need to restart the Chariot service to pickup up the configuration changes |
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Add the certificates to the MQTT Engine > Servers > Certificates configuration as shown below:
Friendly Name | Certificate Filename | File Description | File Location |
EngineCertificate | engine.crt | MQTT Engine Certificate | chariotcerts/certs/engine |
EngineKey | engine.key | MQTT Engine Private Key | chariotcarts/certs/engine |
Update the MQTT Engine > Servers > Settings configuration to use the certificates as shown below and setting the URL to be ssl://FQDN:8883 with the FQDN of the Chariot Server. Click the Save Changes button to save the configuration. Note the URL must use SSL. If a non-secure connection is specified here, the connection will not succeed.
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Add certificates to the MQTT Transmission > Servers > Certificates configuration as shown below:
Friendly Name | Certificate Filename | File Description | File Location |
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TransmissionCertificate | transmission.crt | MQTT Transmission Certificate | chariotcerts/certs/transmisson |
TransmissionKey | transmission.key | MQTT Transmission Private Key | chariotcerts/certs/transmission |
Update the MQTT Transmission > Servers > Settings configuration to use the certificates as shown below. Click the Save Changes button to save the configuration. Note the URL must use SSL. If a non-secure connection is specified here, the connection will not succeed.
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Chariot MQTT Server still requires MQTT credentials to authenticate incoming client connections, even when using client certificates to set up a TLS/SSL session. If clients will not be sending an MQTT username and password, anonymous connections must be enabled.
To enable anonymous connections, navigate to the Configuration → MQTT Server → Configuration tab and set Allow Anonymous
By default, an anonymous client connection will be allowed to publish and subscribe on # unless the Anonymous MQTT Credentials has been selected.
This will allow you to select any of the configured MQTT Credentials, configured under Configuration → MQTT Credentials, and MQTT Chariot will use the Publish and Subscribe ACLs for that MQTT Credential for all anonymous connections.
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A Password will need to be configured for this MQTT Credential but will not be used by MQTT Chariot |
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From the left hand menu bar, navigate to Config > MQTT Engine > Servers and note the Status as Connected.
From the left hand menu bar, navigate to Config > MQTT Transmission > Servers and note the Status as "x of x". This denotes the number of configured transmitters that are connected.
If you do not see a transmitter connected, verify that you have a transmitter with a valid Sparkplug ID either through setting the Group and Edge ID or through the TagPath. Review our troubleshooting guide for assistance.
On the Chariot MQTT server, navigate to STATUS > MQTT where the number of active MQTT Clients will be displayed. This will be a count of 2 or 3 depending on your MQTT Transmission RPC Client configuration.
Clicking on the drop down will show the IDs of each client along with additional details:
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keytool -list -v -keystore <chariot_install_dir>/security/clientcerts.jks |
You will see that the truststore contains no entries. Use the following commands to add the Engine and Transmission client side certificates to the truststore using the "trustStorePassword" when prompted:
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keytool -importcert -file ca/engine/engineCA.crt -keystore <chariot_install_dir>/security/clientcerts.jks -alias ca/engine/engineca
** When prompted Trust this certificate? [no]: respond "yes"***
keytool -importcert -file ca/transmission/transmissionCA.crt -keystore <chariot_install_dir>/security/clientcerts.jks -alias ca/transmission/transmissionca
** When prompted Trust this certificate? [no]: respond "yes"*** |
Once completed, viewing the file will now show two entries similar to below:
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Keystore type: PKCS12
Keystore provider: SUN
Your keystore contains 2 entries
Alias name: engineca
Creation date: Mar 1, 2023
Entry type: trustedCertEntry
Owner: EMAILADDRESS=ilya.binshtok@cirrus-link.com, CN=MacBook-Pro.local, OU=MQTT Engine CA, O=Cirrus Link, L=Overland Park, ST=Kansas, C=US
Issuer: EMAILADDRESS=ilya.binshtok@cirrus-link.com, CN=MacBook-Pro.local, OU=CA, O=Cirrus Link, L=Overland Park, ST=Kansas, C=US
Serial number: b1d46c8c88db5c8e
Valid from: Wed Mar 01 10:37:08 CST 2023 until: Sat Feb 26 10:37:08 CST 2033
Certificate fingerprints:
SHA1: FE:3B:A0:A1:2D:AF:92:F3:A1:3C:8D:76:ED:8F:05:47:EE:A1:59:E2
SHA256: 8C:43:80:B8:14:90:7D:EB:89:69:58:FA:76:29:3D:50:8F:3D:8F:7E:D5:8F:C9:7C:5B:97:0E:DC:0E:E8:D6:3A
Signature algorithm name: SHA256withRSA
Subject Public Key Algorithm: 2048-bit RSA key
Version: 1
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Alias name: transmissionca
Creation date: Mar 1, 2023
Entry type: trustedCertEntry
Owner: EMAILADDRESS=ilya.binshtok@cirrus-link.com, CN=MacBook-Pro.local, OU=MQTT Transmission CA, O=Cirrus Link, L=Overland Park, ST=Kansas, C=US
Issuer: EMAILADDRESS=ilya.binshtok@cirrus-link.com, CN=MacBook-Pro.local, OU=CA, O=Cirrus Link, L=Overland Park, ST=Kansas, C=US
Serial number: b1d46c8c88db5c8f
Valid from: Wed Mar 01 16:50:36 CST 2023 until: Sat Feb 26 16:50:36 CST 2033
Certificate fingerprints:
SHA1: 01:FD:41:DF:AE:CE:28:A4:16:F8:3E:66:E7:71:FE:88:2F:98:1B:86
SHA256: 9F:BC:1D:10:43:9C:F7:BE:D6:07:58:E1:DD:9D:09:0E:0D:01:82:37:DC:8E:FA:9A:3B:46:1A:98:1E:52:39:AE
Signature algorithm name: SHA256withRSA
Subject Public Key Algorithm: 2048-bit RSA key
Version: 1
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Keytool is part of the standard java distribution and is located in the bin sub-directory of your jdk installation directory. Chariot will always include a java distribution under the <chariot_install_dir>/lib/runtime |
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clientAuthPolicy="required" |
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You will now need to restart the Chariot service to pickup up the configuration changes |
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Add the certificates to the MQTT Engine > Servers > Certificates configuration as shown below:
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Update the MQTT Engine > Servers > Settings configuration to use the certificates as shown below:
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Add certificates to the MQTT Transmission > Servers > Certificates configuration as shown below:
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Update the MQTT Transmission > Servers > Settings configuration to use the certificates as shown below:
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You should see that both clients are connected
*** If you do not see MQTT Transmission connected, verify that you have a Transmitter with a valid Sparkplug ID either through setting the Group and Edge ID or through the TagPath***