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1. Switch user to root

   • Code Block
     su root

2. Run the following command to create the CSR request config file

   • Code Block
     nano /var/opt/yarnlab/yarnman/config/yarnman-ssl.cnf

   • add copy the following contenst content and replace <FQDN>with the Fully Quailifed Qualified Domain Name of the server and <EmailAddress>

   • Code Block
     [req] distinguished_name = req_distinguished_name req_extensions = v3_req [ req_distinguished_name ] emailAddress = Email Address (emailAddress_max = 64) <EmailAddress> [ v3_req ] basicConstraints = CA:FALSE keyUsage = nonRepudiation, digitalSignature, keyEncipherment subjectAltName = @alt_names [alt_names] DNS.1 = <FQDN>

3. Run the following command to generate the CSR

   • Command Syntax

     • Code Block
       openssl req -config /var/opt/yarnlab/yarnman/config/yarnman-ssl.cnf -new -subj "/C=${COUNTRY}/ST=${STATE}/L=${LOCATION}/O=${ORGANIZATION}/OU=${FUNCTION}/CN=${FQDN}" \ -out /var/opt/yarnlab/yarnman/config/yarnman-ssl.csr -key /var/opt/yarnlab/yarnman/config/ssl-key.pem -passin pass:somepassword -sha512 -newkey rsa:4096

   • All of the following need to be replaced

     • ${COUNTRY}

     • ${STATE}

     • ${LOCATION}

     • ${ORGANIZATION}

     • ${FUNCTION}

     • ${FQDN

   • Example

     • Code Block
       openssl req -config /var/opt/yarnlab/yarnman/config/yarnman-ssl.cnf -new -subj "/C=AU/ST=NSW/L=SYDNEY/O=yarnlab/OU=lab/CN=yarnman.test.yarnlab.io" \ -out /var/opt/yarnlab/yarnman/config/yarnman-ssl.csr -key /var/opt/yarnlab/yarnman/config/ssl-key.pem -passin pass:somepasswordyarnman -sha512 -newkey rsa:4096

4. Collect CSR for signing

   1. Option 1- SFTP download from /var/opt/yarnlab/upgrade/

      1. cp /var/opt/yarnlab/yarnman/config/yarnman-ssl.csr /var/opt/yarnlab/yarnman/upgrade/yarnman-ssl.csr

   2. Option 2 - copy content to new file yarnman-ssl.cnffrom your ssh terminal to obtain the base64 text

      1. cat /var/opt/yarnlab/yarnman/config/yarnman-ssl.csr

5. Once signed certificate has been received from CA

   1. Review Note if the certificate has intermediate CA signing and follow process below

   Backup

   1. CA, Extra steps will be required detailed in the step Configuring Intermediate CA Certificates

6. rename/move existing SSL public certificate

   • code

     Code Block
     cpmv /var/opt/yarnlab/yarnman/config/ssl-cert.cert /var/opt/yarnlab/yarnman/config/ssl-cert.cert.bk
     cat /var/opt/yarnlab/yarnman/config/ssl-cert.cert

7. Update public certificate

   • Option 1
     upload to /var/opt/yarnlab/yarnman/upgrade/ssl-cert.cert

     Code Blockrm

     tmp from your sftp program, set/validate correct permission and restart yarnman

     • Code Block
       mv /tmp/certname.something /var/opt/yarnlab/yarnman/config/ssl-cert.cert mv chown ym-yarnman-app:ym-yarnman-app-gp /var/opt/yarnlab/yarnman/config/upgradeca/ssl-cert.cert chmod 644 /var/opt/yarnlab/yarnman/config/ssl-cert.cert systemctl restart yarnman

   • Option 2
     use nano to paste the contents of the base64 certificate

     • Code Block
       nano /var/opt/yarnlab/yarnman/config/ssl-cert.cert

     • Code Block
       systemctl restartchown yarnman

Verification

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1. • • ym-yarnman-app:ym-yarnman-app-gp /var/opt/yarnlab/yarnman/config/ssl-cert.cert chmod 644 /var/opt/yarnlab/yarnman/config/ssl-cert.cert systemctl restart yarnman

Verification

Verify the certficate is valid
openssl x509 -noout -text -in /var/opt/yarnlab/yarnman/config/ssl-cert.cert
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            2c:00:00:00:28:d4:5a:73:57:37:04:7f:f1:00:00:00:00:00:28
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: DC = io, DC = yarnlab, DC = lab, CN = lab-WIN-J2LOLHCUKRC-CA
        Validity
            Not Before: Jan 10 02:35:41 2023 GMT
            Not After : Jan  9 02:35:41 2025 GMT
        Subject: C = AU, ST = NSW, L = SYDNEY, O = yarnlab, OU = lab, CN = yarnman-2.test.yarnlab.io
Lots more cert output...

Configuring Intermediate CA Certificates

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In order to enable intermediate certificates we must create new folder directory of ca in in /var/opt/yarnlab/yarnman/config/

mkdir /var/opt/yarnlab/yarnman/config/ca

 /ca
    1-name.crt
    2-name.crt
    3-name.crt

add files in order of the cert chain so the files in the directory look like
ls -lh /var/opt/yarnlab/yarnman/config/ca
1-name.crt
2-name.crt
3-name.crt

The /ca folder contains the intermediate certificates that will be loaded in order. The easiest way to achieve this is to use the naming conventions 1-, 2- etc. Each certificate must end in .crt in order to be loaded.

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chmod 755 /var/opt/yarnlab/yarnman/config/ca
chmod 644 /var/opt/yarnlab/yarnman/config/ca/*.crt

restart yarnman

systemctl restart yarnman

Photon iptables

In order to have perstitant firewall rules for docker containers, we need to populate the DOCKER-USER table, this is processed by iptables before traffic hits the host, hence we can’t apply the firewall rules directly on INPUT table (used by eth0)

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