From: Martin Pitt Date: Thu, 16 Jan 2020 15:33:29 +0000 (+0100) Subject: Add section about desktop session embedding X-Git-Url: https://piware.de/gitweb/?a=commitdiff_plain;h=e52f6b0fe3eaa8638c13d482f20a2e4c7c98e4a4;p=talk-cockpit-auth-anywhere.git Add section about desktop session embedding --- diff --git a/cockpit-auth-anywhere.md b/cockpit-auth-anywhere.md index b5a53c2..bc8783d 100644 --- a/cockpit-auth-anywhere.md +++ b/cockpit-auth-anywhere.md @@ -7,7 +7,6 @@ date: DevConv.CZ 2020 theme: Singapore header-includes: - \setbeameroption{show notes} - - \newcommand{\fullsizeimg}[1]{\makebox[\linewidth]{\includegraphics[width=\paperwidth]{#1}}} ... # Cockpit what? @@ -52,8 +51,10 @@ resize2fs /dev/vg0/data1 - Quit virt-viewer - Move to local browser, enable mobile mode (Ctrl+Shift+M) - Zero configuration so far, other than possibly installing cockpit pkg and enabling cockpit.socket +- But wait, you say -- want to admin that server over there, but not allowed to + open new port and system service? - In larger environments it's impractical to install cockpit server on hundreds - of machines and using the login web page + of machines and using the login web page; better solution: piggyback on ssh - Glimpse of how to customize how cockpit runs and how to authenticate to it ::: @@ -139,7 +140,7 @@ RequireHost=true - SSO/Kerberos in Identity Management domains - smart card/client certificate authentication -- OAuth (Kubernetes) +- OAuth (external embedding) - Foreman: included cockpit-ws with dynamic configuration TODO: foreman screenshot @@ -150,17 +151,72 @@ TODO: foreman screenshot without the login page - browsers can ask for TLS client certificates, commonly with smart cards, and present them to the web server; latest Cockpit versions supports that -- Foreman has a "Web Console" button; already has ssh to all maintained - machines +- Foreman has a "Web Console" button; interesting case for seamless transition + between Foreman and Cockpit +- already has ssh to all maintained machines - runs a single cockpit-ws process on its server, and dynamically configures it - for selected target machine, seamless transition between Foreman and Cockpit + for selected target machine +- custom cockpit session helper to do OAuth between Foreman session and + cockpit-ws, and wrap cockpit-ssh session starter - not enough time to demo and explain all of this; just keep in mind that it's possible ::: -# Custom authentication example +# Embedding into existing session + +![local-session-unsafe](local-session-unsafe.pdf){height=60%}\ + +\footnotesize \verb!cockpit-ws -p 9999 --no-tls --local-session=/usr/bin/cockpit-bridge! + +`firefox http://localhost:9999` + +:::notes +- what I do want to show: opposite direction; "replace cockpit-session" can + also mean "by nothing" +- due to common JSON protocol, we can connect ws directly to a cockpit-bridge +- take a step back: if I want to admin this very machine, it's in a running + Linux session, it knows who I am +- put the whole auth structure inside out and instead run cockpit-ws as my user + inside my session +- open localhost:9999 in firefox +- alarm bells: exposes my session to a TCP port without any auth +::: + + +# Embedding into existing session: once more with safety! + +![local-session-unsafe](local-session.pdf){height=60%}\ + +\footnotesize \verb! ! + +`/usr/libexec/cockpit-desktop [page]` + +:::notes +- need to hide that port; put browser and cockpit-ws into network namespace, + then they live in a completely isolated world +- do some work to hide browser chrome, use webkit if available +- cockpit-desktop / +- wants to run priv bridge, can accept or decline +- decline, R/O view +- can show an individual iframe, "page" +- suddenly you end up with a halfway decent desktop app +- just the storage page, replacement for gnome-disks +- cockpit-desktop podman +::: + +# Conclusion + +- Authentication is very flexible +- Works with zero configuration +- Can be arbitrarily embedded + +:::notes +- Cockpit provides a set of standard auth protocols that are being used in + today's modern deployments +- Once you know about the structure, you can combine ssh, web servers, reverse + proxies, and custom auth helpers to embed Cockpit anywhere you want +::: -TODO # Q & A diff --git a/local-session-unsafe.drawio b/local-session-unsafe.drawio new file mode 100644 index 0000000..2aabb57 --- /dev/null +++ b/local-session-unsafe.drawio @@ -0,0 +1 @@ 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 \ No newline at end of file diff --git a/local-session-unsafe.pdf b/local-session-unsafe.pdf new file mode 100644 index 0000000..c456b9f Binary files /dev/null and b/local-session-unsafe.pdf differ diff --git a/local-session.drawio b/local-session.drawio new file mode 100644 index 0000000..2a6a1de --- /dev/null +++ b/local-session.drawio @@ -0,0 +1 @@ +7Vhdc6M2FP01fjRjENj4Mbaz2enW251Jpm32JYNBxmoEokKO8f76XoH4EOCEZO0dPzSZSdDRJ+fce5A0Qssou+NesluzANORNQmyEVqNLMs2EfyVwLEATGTaBRJyEiisBu7JD6zAiUL3JMCp1lAwRgVJdNBncYx9oWEe5+ygN9syqs+aeCHuAPe+R7voXyQQuwJ1nUmNf8Yk3JUzmxNVE3llYwWkOy9ghwaEbkdoyRkTxVOULTGV5JW8FP0+naitFsZxLIZ0+PJb4Hz5J3taLIkr1s5DYn3/PlajvHh0r15YLVYcSwY428cBloOYI7Q47IjA94nny9oDaA7YTkRUVXcXVc6AucBZA1KLvMMswoIfoUlZixRhKmTGc1U+1PwjV2G7BveopN5TmofV2DUt8KCY6WdpZa4Rm/34kzsP4erwOFmvH+MhLHlpUoTflmSSrEWCOYHZMQcMpoB4xd9qqMmZR0kYw7MPnOV1VaRMoBB46S5nXxZSIJ7E4QMD2lcIABLl8Vv+X5EohDekZAN/PV+QF/wUEA4rY5KGT9RLBEuefEpgLiN9Cc8k2czRJXO7ktlOVzHnDIL1hrXVI9iUCkkneYHHUOQvXkCbEvidxPsMuq1w+gw0SYFxmhIWly1hLZt2b8C0MVtxAQwKXe5UcPaMl4wyGRoxi6V+W0JpC+qEhdSDgDPdqIqIBIGcpjcn66yVcbNlsVDeajrn0bzytVc0N+e9aXoh0dHrok9KQgH9dy9dd0HxVtSlUsO7r3+sb0/J+5EBDcP4ZdGSr+DaYqXjD1Y3VmY9/jC/VKjYZwoVn/nPCRHjDexdwH/fjpkCip636eDGq/Fin8odjkfp8F6NmNvwX+5Z1xmFru5Y1Vat6ViTHseaXmpfMb2+3RcyW7ZuOgZgjR+rS5rTQ5p5Dp/v3405J7NXRo3GX5mwsmKc5vF0Aw1MJ8m62byQxwXMG1lSjHfVn/azaD41TLeVG12VrZkxRV2hrYvp3JceTZd+t8zv9vXDScO9Qss8RyTYevb3HL36Tl7m3EDupaLAfdskcRzcyLO+TCnqwZbd17UAQvjxb0mT4ZTFR8VaXlhlWulYljIiGt2g9FiOCM91J1k4vqVCyvbcxwN8TXg8xGJAYuBAu7voqtqQrc+iS4xj6smjorbcPiHVDN8YyW22DJqZrQVN+1RXvLjq1LygaI1jIteY2zM0dW3wH8eaTrVhbQtkgIisfvVZCtY6s+QxV1Hy8R3j6W/O+3aMnUPnVywpiL0Ip3lyv3LU/H8jpwLOah0ner9WPQF/jk9V/zXagBuit0yqTVRlPg3rqY2o33wqo6tcb4jN/YRlTbuW9dqB60ocy5zpn7nODn+oZaHWJYhltwb6sCtBsb4aLprXF+zo9j8= \ No newline at end of file diff --git a/local-session.pdf b/local-session.pdf new file mode 100644 index 0000000..c3f29f8 Binary files /dev/null and b/local-session.pdf differ