DOCKER(1)

💖 DOCKER-SWARM-CA 💖

okay bestie so this is a page from the Docker User Manuals and it's all about docker swarm ca — the command that shows you your swarm's root CA and, when you're feeling spicy, rotates it. it's giving certificate glow-up energy. ✨

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🌸 NAME 🌸

docker-swarm-ca — display and rotate the root CA 👑

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🦋 SYNOPSIS 🦋

docker swarm ca [OPTIONS]

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✨ DESCRIPTION ✨

display and rotate the root CA. that's it, that's the whole vibe. you can peek at your current root CA, or you can straight up swap it out for a brand new one and make the whole cluster re-do its certificates. main character behaviour, honestly. 💅

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🎀 OPTIONS 🎀

• --ca-cert= — path to the PEM-formatted root CA certificate you wanna use for the new cluster. like, the certificate file itself, bestie. 🌈
• --ca-key= — path to the PEM-formatted root CA key for the new cluster. yes, the secret key — keep it safe, don't be posting it in the group chat. 🙈
• --cert-expiry=2160h0m0s — how long node certificates stay valid for. the duration units you can use are ns, us, ms, s, m, h — and the default is literally 2160h0m0s, which is a lot of hours, no cap. ⏳
• -d, --detach[=false] — exit immediately instead of waiting for the root rotation to converge. so you just dip and let it cook in the background. defaults to false. 🏃♀️
• --external-ca= — specifications of one or more certificate signing endpoints. for when the signing happens somewhere else, iykyk. 🔥
• -q, --quiet[=false] — suppress progress output. no little dots, no updates, just silence. defaults to false. 🤫
• --rotate[=false] — rotate the swarm CA! and if you don't hand it a certificate or a key, it will generate brand new ones for you. defaults to false. this is the big one, bestie. 💫

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👑 SEE ALSO 👑

• docker-swarm(1) — go read that one too, it's the whole swarm situation. 🐝

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and that's the page!! fr fr. this was Docker Community's Docker User Manuals, dated Oct 2026, and the manual is literally called DOCKER(1). slay, go rotate that CA responsibly. periodt. 💖✨🎀🦋