Dustin C. Hatch
d907b47db1
Since Fedora CoreOS machines are not managed by Ansible, we need another way to keep the HTTPS certificate up-to-date. To that end, I've added the `fetchcert.sh` script, along with a corresponding systemd service and timer unit, that will fetch the latest certificate from the Secret resource managed by the Kubernetes API. The script authenticates with a long-lived bearer token associated with a particular Kubernetes service account and downloads the current Secret to a local file. If the certificate in the Secret is different than the one already in place, the certificate and key files are updated and nginx is reloaded.
37 lines
884 B
Desktop File
37 lines
884 B
Desktop File
[Unit]
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Description=Fetch HTTPS certificate from Kubernetes Secret API
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Wants=network-online.target
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After=network-online.target
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[Service]
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Type=oneshot
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ExecStart=/bin/sh /etc/fetchcert/fetchcert.sh default pyrocufflink-cert
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ProtectSystem=strict
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ReadWritePaths=/etc/pki/nginx
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CapabilityBoundingSet=CAP_CHOWN
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DeviceAllow=
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DevicePolicy=closed
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LockPersonality=yes
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MemoryDenyWriteExecute=yes
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NoNewPrivileges=yes
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PrivateDevices=yes
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PrivateUsers=yes
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PrivateTmp=yes
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ProcSubset=pid
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ProtectClock=yes
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ProtectControlGroups=yes
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ProtectHome=yes
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ProtectHostname=yes
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ProtectKernelLogs=yes
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ProtectKernelModules=yes
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ProtectKernelTunables=yes
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ProtectProc=invisible
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ProtectSystem=strict
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RestrictAddressFamilies=AF_INET AF_INET6 AF_UNIX
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RestrictNamespaces=yes
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RestrictRealtime=yes
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RestrictSUIDSGID=yes
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SystemCallArchitectures=native
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SystemCallFilter=@system-service
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SystemCallFilter=~@privileged @resources
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