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Martin Alfke for betadots

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Verlängerung der Puppet CA

Puppet verschlüsselt Verbindungen mit einer selbst-signierten OpenSSL basieten CA.
Diese hat üblicherweise eine Laufzeit von 5 Jahren. Bei der initialen Installation kann man dies über eine Konfigurationseinstellung ändern:

puppet config set --section server ca_ttl 10y

Bei Bestandsinstallationen kann man die CA im laufenden Betrieb verlängern.
Im Slack Puppet Community Channel hat Neeloy z.B. ein Script veröffentlicht:

cd /etc/puppetlabs/puppet/ssl/ca
(openssl rsa -noout -modulus -in ca_key.pem  2> /dev/null | openssl md5 ; openssl x509 -noout -modulus -in ca_crt.pem  2> /dev/null | openssl md5 )
# Generate new CSR
openssl x509 -x509toreq -in ca_crt.pem -signkey ca_key.pem -out ca_csr.pem
# Sign
cat > extension.cnf << EOF
[CA_extensions]
basicConstraints = critical,CA:TRUE
nsComment = "Puppet Ruby/OpenSSL Internal Certificate"
keyUsage = critical,keyCertSign,cRLSign
subjectKeyIdentifier = hash
EOF
cp ca_crt.pem ca_crt.pem.old
openssl x509 -req -days 3650 -in ca_csr.pem -signkey ca_key.pem -out ca_crt.pem -extfile extension.cnf -extensions CA_extensions
openssl x509 -in ca_crt.pem -noout -text|grep -A 3 Validity
chown -R puppet: ./*
cd /etc/puppetlabs/puppet/ssl
cp -a ca/ca_crt.pem certs/ca.pem
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Alternativ kann man das Puppet ca_extend Modul verwenden, welches die CA Verlängerung mit Hilfe von Bolt Tasks und Plans realisiert.

Viel Erfolg bei der weiteren Nutzung von Puppet.

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Billboard image

The Next Generation Developer Platform

Coherence is the first Platform-as-a-Service you can control. Unlike "black-box" platforms that are opinionated about the infra you can deploy, Coherence is powered by CNC, the open-source IaC framework, which offers limitless customization.

Learn more

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