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-rw-r--r--g3doc/user_guide/BUILD70
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-rw-r--r--g3doc/user_guide/compatibility.md93
-rw-r--r--g3doc/user_guide/debugging.md131
-rw-r--r--g3doc/user_guide/filesystem.md60
-rw-r--r--g3doc/user_guide/install.md157
-rw-r--r--g3doc/user_guide/networking.md85
-rw-r--r--g3doc/user_guide/platforms.md95
-rw-r--r--g3doc/user_guide/quick_start/BUILD33
-rw-r--r--g3doc/user_guide/quick_start/docker.md96
-rw-r--r--g3doc/user_guide/quick_start/kubernetes.md36
-rw-r--r--g3doc/user_guide/quick_start/oci.md45
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-rw-r--r--g3doc/user_guide/tutorials/cni.md172
-rw-r--r--g3doc/user_guide/tutorials/docker.md68
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diff --git a/g3doc/user_guide/BUILD b/g3doc/user_guide/BUILD
deleted file mode 100644
index b69aee12c..000000000
--- a/g3doc/user_guide/BUILD
+++ /dev/null
@@ -1,70 +0,0 @@
-load("//website:defs.bzl", "doc")
-
-package(
- default_visibility = ["//website:__pkg__"],
- licenses = ["notice"],
-)
-
-doc(
- name = "compatibility",
- src = "compatibility.md",
- category = "Compatibility",
- permalink = "/docs/user_guide/compatibility/",
- weight = "0",
-)
-
-doc(
- name = "checkpoint_restore",
- src = "checkpoint_restore.md",
- category = "User Guide",
- permalink = "/docs/user_guide/checkpoint_restore/",
- weight = "60",
-)
-
-doc(
- name = "debugging",
- src = "debugging.md",
- category = "User Guide",
- permalink = "/docs/user_guide/debugging/",
- weight = "70",
-)
-
-doc(
- name = "FAQ",
- src = "FAQ.md",
- category = "User Guide",
- permalink = "/docs/user_guide/faq/",
- weight = "90",
-)
-
-doc(
- name = "filesystem",
- src = "filesystem.md",
- category = "User Guide",
- permalink = "/docs/user_guide/filesystem/",
- weight = "40",
-)
-
-doc(
- name = "networking",
- src = "networking.md",
- category = "User Guide",
- permalink = "/docs/user_guide/networking/",
- weight = "50",
-)
-
-doc(
- name = "install",
- src = "install.md",
- category = "User Guide",
- permalink = "/docs/user_guide/install/",
- weight = "10",
-)
-
-doc(
- name = "platforms",
- src = "platforms.md",
- category = "User Guide",
- permalink = "/docs/user_guide/platforms/",
- weight = "30",
-)
diff --git a/g3doc/user_guide/FAQ.md b/g3doc/user_guide/FAQ.md
deleted file mode 100644
index 89df65e99..000000000
--- a/g3doc/user_guide/FAQ.md
+++ /dev/null
@@ -1,122 +0,0 @@
-# FAQ
-
-[TOC]
-
-### What operating systems are supported? {#supported-os}
-
-Today, gVisor requires Linux.
-
-### What CPU architectures are supported? {#supported-cpus}
-
-gVisor currently supports [x86_64/AMD64](https://en.wikipedia.org/wiki/X86-64)
-compatible processors. Preliminary support is also available for
-[ARM64](https://en.wikipedia.org/wiki/ARM_architecture#AArch64).
-
-### Do I need to modify my Linux application to use gVisor? {#modify-app}
-
-No. gVisor is capable of running unmodified Linux binaries.
-
-### What binary formats does gVisor support? {#supported-binaries}
-
-gVisor supports Linux
-[ELF](https://en.wikipedia.org/wiki/Executable_and_Linkable_Format) binaries.
-
-Binaries run in gVisor should be built for the
-[AMD64](https://en.wikipedia.org/wiki/X86-64) or
-[AArch64](https://en.wikipedia.org/wiki/ARM_architecture#AArch64) CPU
-architectures.
-
-### Can I run Docker images using gVisor? {#docker-images}
-
-Yes. Please see the [Docker Quick Start][docker].
-
-### Can I run Kubernetes pods using gVisor? {#k8s-pods}
-
-Yes. Please see the [Kubernetes Quick Start][k8s].
-
-### What's the security model? {#security-model}
-
-See the [Security Model][security-model].
-
-## Troubleshooting
-
-### My container runs fine with `runc` but fails with `runsc` {#app-compatibility}
-
-If you’re having problems running a container with `runsc` it’s most likely due
-to a compatibility issue or a missing feature in gVisor. See
-[Debugging][debugging].
-
-### When I run my container, docker fails with: `open /run/containerd/.../<containerid>/log.json: no such file or directory` {#memfd-create}
-
-You are using an older version of Linux which doesn't support `memfd_create`.
-
-This is tracked in [bug #268](https://gvisor.dev/issue/268).
-
-### When I run my container, docker fails with: `flag provided but not defined: -console` {#old-docker}
-
-You're using an old version of Docker. See [Docker Quick Start][docker].
-
-### I can’t see a file copied with: `docker cp` {#fs-cache}
-
-For performance reasons, gVisor caches directory contents, and therefore it may
-not realize a new file was copied to a given directory. To invalidate the cache
-and force a refresh, create a file under the directory in question and list the
-contents again.
-
-As a workaround, shared root filesystem can be enabled. See
-[Filesystem][filesystem].
-
-This bug is tracked in [bug #4](https://gvisor.dev/issue/4).
-
-Note that `kubectl cp` works because it does the copy by exec'ing inside the
-sandbox, and thus gVisor's internal cache is made aware of the new files and
-directories.
-
-### I'm getting an error like: `panic: unable to attach: operation not permitted` or `fork/exec /proc/self/exe: invalid argument: unknown` {#runsc-perms}
-
-Make sure that permissions and the owner is correct on the `runsc` binary.
-
-```bash
-sudo chown root:root /usr/local/bin/runsc
-sudo chmod 0755 /usr/local/bin/runsc
-```
-
-### I'm getting an error like `mount submount "/etc/hostname": creating mount with source ".../hostname": input/output error: unknown.` {#memlock}
-
-There is a bug in Linux kernel versions 5.1 to 5.3.15, 5.4.2, and 5.5. Upgrade
-to a newer kernel or add the following to
-`/lib/systemd/system/containerd.service` as a workaround.
-
-```
-LimitMEMLOCK=infinity
-```
-
-And run `systemctl daemon-reload && systemctl restart containerd` to restart
-containerd.
-
-See [issue #1765](https://gvisor.dev/issue/1765) for more details.
-
-### My container cannot resolve another container's name when using Docker user defined bridge {#docker-bridge}
-
-This is normally indicated by errors like `bad address 'container-name'` when
-trying to communicate to another container in the same network.
-
-Docker user defined bridge uses an embedded DNS server bound to the loopback
-interface on address 127.0.0.10. This requires access to the host network in
-order to communicate to the DNS server. runsc network is isolated from the host
-and cannot access the DNS server on the host network without breaking the
-sandbox isolation. There are a few different workarounds you can try:
-
-* Use default bridge network with `--link` to connect containers. Default
- bridge doesn't use embedded DNS.
-* Use [`--network=host`][host-net] option in runsc, however beware that it
- will use the host network stack and is less secure.
-* Use IPs instead of container names.
-* Use [Kubernetes][k8s]. Container name lookup works fine in Kubernetes.
-
-[security-model]: /docs/architecture_guide/security/
-[host-net]: /docs/user_guide/networking/#network-passthrough
-[debugging]: /docs/user_guide/debugging/
-[filesystem]: /docs/user_guide/filesystem/
-[docker]: /docs/user_guide/quick_start/docker/
-[k8s]: /docs/user_guide/quick_start/kubernetes/
diff --git a/g3doc/user_guide/checkpoint_restore.md b/g3doc/user_guide/checkpoint_restore.md
deleted file mode 100644
index 0ab0911b0..000000000
--- a/g3doc/user_guide/checkpoint_restore.md
+++ /dev/null
@@ -1,101 +0,0 @@
-# Checkpoint/Restore
-
-[TOC]
-
-gVisor has the ability to checkpoint a process, save its current state in a
-state file, and restore into a new container using the state file.
-
-## How to use checkpoint/restore
-
-Checkpoint/restore functionality is currently available via raw `runsc`
-commands. To use the checkpoint command, first run a container.
-
-```bash
-runsc run <container id>
-```
-
-To checkpoint the container, the `--image-path` flag must be provided. This is
-the directory path within which the checkpoint state-file will be created. The
-file will be called `checkpoint.img` and necessary directories will be created
-if they do not yet exist.
-
-> Note: Two checkpoints cannot be saved to the same directory; every image-path
-> provided must be unique.
-
-```bash
-runsc checkpoint --image-path=<path> <container id>
-```
-
-There is also an optional `--leave-running` flag that allows the container to
-continue to run after the checkpoint has been made. (By default, containers stop
-their processes after committing a checkpoint.)
-
-> Note: All top-level runsc flags needed when calling run must be provided to
-> checkpoint if --leave-running is used.
-
-> Note: --leave-running functions by causing an immediate restore so the
-> container, although will maintain its given container id, may have a different
-> process id.
-
-```bash
-runsc checkpoint --image-path=<path> --leave-running <container id>
-```
-
-To restore, provide the image path to the `checkpoint.img` file created during
-the checkpoint. Because containers stop by default after checkpointing, restore
-needs to happen in a new container (restore is a command which parallels start).
-
-```bash
-runsc create <container id>
-
-runsc restore --image-path=<path> <container id>
-```
-
-## How to use checkpoint/restore in Docker:
-
-Currently checkpoint/restore through `runsc` is not entirely compatible with
-Docker, although there has been progress made from both gVisor and Docker to
-enable compatibility. Here, we document the ideal workflow.
-
-Run a container:
-
-```bash
-docker run [options] --runtime=runsc <image>`
-```
-
-Checkpoint a container:
-
-```bash
-docker checkpoint create <container> <checkpoint_name>`
-```
-
-Create a new container into which to restore:
-
-```bash
-docker create [options] --runtime=runsc <image>
-```
-
-Restore a container:
-
-```bash
-docker start --checkpoint --checkpoint-dir=<directory> <container>
-```
-
-### Issues Preventing Compatibility with Docker
-
-- **[Moby #37360][leave-running]:** Docker version 18.03.0-ce and earlier
- hangs when checkpointing and does not create the checkpoint. To successfully
- use this feature, install a custom version of docker-ce from the moby
- repository. This issue is caused by an improper implementation of the
- `--leave-running` flag. This issue is fixed in newer releases.
-- **Docker does not support restoration into new containers:** Docker
- currently expects the container which created the checkpoint to be the same
- container used to restore which is not possible in runsc. When Docker
- supports container migration and therefore restoration into new containers,
- this will be the flow.
-- **[Moby #37344][checkpoint-dir]:** Docker does not currently support the
- `--checkpoint-dir` flag but this will be required when restoring from a
- checkpoint made in another container.
-
-[leave-running]: https://github.com/moby/moby/pull/37360
-[checkpoint-dir]: https://github.com/moby/moby/issues/37344
diff --git a/g3doc/user_guide/compatibility.md b/g3doc/user_guide/compatibility.md
deleted file mode 100644
index 9d3e3680f..000000000
--- a/g3doc/user_guide/compatibility.md
+++ /dev/null
@@ -1,93 +0,0 @@
-# Applications
-
-[TOC]
-
-gVisor implements a large portion of the Linux surface and while we strive to
-make it broadly compatible, there are (and always will be) unimplemented
-features and bugs. The only real way to know if it will work is to try. If you
-find a container that doesn’t work and there is no known issue, please
-[file a bug][bug] indicating the full command you used to run the image. You can
-view open issues related to compatibility [here][issues].
-
-If you're able to provide the [debug logs](../debugging/), the problem likely to
-be fixed much faster.
-
-## What works?
-
-The following applications/images have been tested:
-
-* elasticsearch
-* golang
-* httpd
-* java8
-* jenkins
-* mariadb
-* memcached
-* mongo
-* mysql
-* nginx
-* node
-* php
-* postgres
-* prometheus
-* python
-* redis
-* registry
-* tomcat
-* wordpress
-
-## Utilities
-
-Most common utilities work. Note that:
-
-* Some tools, such as `tcpdump` and old versions of `ping`, require explicitly
- enabling raw sockets via the unsafe `--net-raw` runsc flag.
-* Different Docker images can behave differently. For example, Alpine Linux
- and Ubuntu have different `ip` binaries.
-
- Specific tools include:
-
-<!-- mdformat off(don't wrap the table) -->
-
-| Tool | Status |
-|:--------:|:-----------------------------------------:|
-| apt-get | Working. |
-| bundle | Working. |
-| cat | Working. |
-| curl | Working. |
-| dd | Working. |
-| df | Working. |
-| dig | Working. |
-| drill | Working. |
-| env | Working. |
-| find | Working. |
-| gdb | Working. |
-| gosu | Working. |
-| grep | Working (unless stdin is a pipe and stdout is /dev/null). |
-| ifconfig | Works partially, like ip. Full support [in progress](https://gvisor.dev/issue/578). |
-| ip | Some subcommands work (e.g. addr, route). Full support [in progress](https://gvisor.dev/issue/578). |
-| less | Working. |
-| ls | Working. |
-| lsof | Working. |
-| mount | Works in readonly mode. gVisor doesn't currently support creating new mounts at runtime. |
-| nc | Working. |
-| nmap | Not working. |
-| netstat | [In progress](https://gvisor.dev/issue/2112). |
-| nslookup | Working. |
-| ping | Working. |
-| ps | Working. |
-| route | Working. |
-| ss | [In progress](https://gvisor.dev/issue/2114). |
-| sshd | Partially working. Job control [in progress](https://gvisor.dev/issue/154). |
-| strace | Working. |
-| tar | Working. |
-| tcpdump | [In progress](https://gvisor.dev/issue/173). |
-| top | Working. |
-| uptime | Working. |
-| vim | Working. |
-| wget | Working. |
-
-<!-- mdformat on -->
-
-[bug]: https://github.com/google/gvisor/issues/new?title=Compatibility%20Issue:
-[issues]: https://github.com/google/gvisor/issues?q=is%3Aissue+is%3Aopen+label%3A%22area%3A+compatibility%22
diff --git a/g3doc/user_guide/debugging.md b/g3doc/user_guide/debugging.md
deleted file mode 100644
index 0525fd5c0..000000000
--- a/g3doc/user_guide/debugging.md
+++ /dev/null
@@ -1,131 +0,0 @@
-# Debugging
-
-[TOC]
-
-To enable debug and system call logging, add the `runtimeArgs` below to your
-[Docker](../quick_start/docker/) configuration (`/etc/docker/daemon.json`):
-
-```json
-{
- "runtimes": {
- "runsc": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--debug-log=/tmp/runsc/",
- "--debug",
- "--strace"
- ]
- }
- }
-}
-```
-
-> Note: the last `/` in `--debug-log` is needed to interpret it as a directory.
-> Then each `runsc` command executed will create a separate log file. Otherwise,
-> log messages from all commands will be appended to the same file.
-
-You may also want to pass `--log-packets` to troubleshoot network problems. Then
-restart the Docker daemon:
-
-```bash
-sudo systemctl restart docker
-```
-
-Run your container again, and inspect the files under `/tmp/runsc`. The log file
-ending with `.boot` will contain the strace logs from your application, which
-can be useful for identifying missing or broken system calls in gVisor. If you
-are having problems starting the container, the log file ending with `.create`
-may have the reason for the failure.
-
-## Stack traces
-
-The command `runsc debug --stacks` collects stack traces while the sandbox is
-running which can be useful to troubleshoot issues or just to learn more about
-gVisor. It connects to the sandbox process, collects a stack dump, and writes it
-to the console. For example:
-
-```bash
-docker run --runtime=runsc --rm -d alpine sh -c "while true; do echo running; sleep 1; done"
-63254c6ab3a6989623fa1fb53616951eed31ac605a2637bb9ddba5d8d404b35b
-
-sudo runsc --root /var/run/docker/runtime-runsc/moby debug --stacks 63254c6ab3a6989623fa1fb53616951eed31ac605a2637bb9ddba5d8d404b35b
-```
-
-> Note: `--root` variable is provided by docker and is normally set to
-> `/var/run/docker/runtime-[runtime-name]/moby`. If in doubt, `--root` is logged
-> to `runsc` logs.
-
-## Debugger
-
-You can debug gVisor like any other Golang program. If you're running with
-Docker, you'll need to find the sandbox PID and attach the debugger as root.
-Here is an example:
-
-```bash
-# Get a runsc with debug symbols (download nightly or build with symbols).
-bazel build -c dbg //runsc:runsc
-
-# Start the container you want to debug.
-docker run --runtime=runsc --rm --name=test -d alpine sleep 1000
-
-# Find the sandbox PID.
-docker inspect test | grep Pid | head -n 1
-
-# Attach your favorite debugger.
-sudo dlv attach <PID>
-
-# Set a breakpoint and resume.
-break mm.MemoryManager.MMap
-continue
-```
-
-## Profiling
-
-`runsc` integrates with Go profiling tools and gives you easy commands to
-profile CPU and heap usage. First you need to enable `--profile` in the command
-line options before starting the container:
-
-```json
-{
- "runtimes": {
- "runsc-prof": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--profile"
- ]
- }
- }
-}
-```
-
-> Note: Enabling profiling loosens the seccomp protection added to the sandbox,
-> and should not be run in production under normal circumstances.
-
-Then restart docker to refresh the runtime options. While the container is
-running, execute `runsc debug` to collect profile information and save to a
-file. Here are the options available:
-
-* **--profile-heap:** Generates heap profile to the speficied file.
-* **--profile-cpu:** Enables CPU profiler, waits for `--duration` seconds and
- generates CPU profile to the speficied file.
-
-For example:
-
-```bash
-docker run --runtime=runsc-prof --rm -d alpine sh -c "while true; do echo running; sleep 1; done"
-63254c6ab3a6989623fa1fb53616951eed31ac605a2637bb9ddba5d8d404b35b
-
-sudo runsc --root /var/run/docker/runtime-runsc-prof/moby debug --profile-heap=/tmp/heap.prof 63254c6ab3a6989623fa1fb53616951eed31ac605a2637bb9ddba5d8d404b35b
-sudo runsc --root /var/run/docker/runtime-runsc-prof/moby debug --profile-cpu=/tmp/cpu.prof --duration=30s 63254c6ab3a6989623fa1fb53616951eed31ac605a2637bb9ddba5d8d404b35b
-```
-
-The resulting files can be opened using `go tool pprof` or [pprof][]. The
-examples below create image file (`.svg`) with the heap profile and writes the
-top functions using CPU to the console:
-
-```bash
-go tool pprof -svg /usr/local/bin/runsc /tmp/heap.prof
-go tool pprof -top /usr/local/bin/runsc /tmp/cpu.prof
-```
-
-[pprof]: https://github.com/google/pprof/blob/master/doc/README.md
diff --git a/g3doc/user_guide/filesystem.md b/g3doc/user_guide/filesystem.md
deleted file mode 100644
index cd00762dd..000000000
--- a/g3doc/user_guide/filesystem.md
+++ /dev/null
@@ -1,60 +0,0 @@
-# Filesystem
-
-[TOC]
-
-gVisor accesses the filesystem through a file proxy, called the Gofer. The gofer
-runs as a separate process, that is isolated from the sandbox. Gofer instances
-communicate with their respective sentry using the 9P protocol. For another
-explanation see [What is gVisor?](../README.md).
-
-## Sandbox overlay
-
-To isolate the host filesystem from the sandbox, you can set a writable tmpfs
-overlay on top of the entire filesystem. All modifications are made to the
-overlay, keeping the host filesystem unmodified.
-
-> Note: All created and modified files are stored in memory inside the sandbox.
-
-To use the tmpfs overlay, add the following `runtimeArgs` to your Docker
-configuration (`/etc/docker/daemon.json`) and restart the Docker daemon:
-
-```json
-{
- "runtimes": {
- "runsc": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--overlay"
- ]
- }
- }
-}
-```
-
-## Shared root filesystem
-
-The root filesystem is where the image is extracted and is not generally
-modified from outside the sandbox. This allows for some optimizations, like
-skipping checks to determine if a directory has changed since the last time it
-was cached, thus missing updates that may have happened. If you need to `docker
-cp` files inside the root filesystem, you may want to enable shared mode. Just
-be aware that file system access will be slower due to the extra checks that are
-required.
-
-> Note: External mounts are always shared.
-
-To use set the root filesystem shared, add the following `runtimeArgs` to your
-Docker configuration (`/etc/docker/daemon.json`) and restart the Docker daemon:
-
-```json
-{
- "runtimes": {
- "runsc": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--file-access=shared"
- ]
- }
- }
-}
-```
diff --git a/g3doc/user_guide/install.md b/g3doc/user_guide/install.md
deleted file mode 100644
index 9afdd264d..000000000
--- a/g3doc/user_guide/install.md
+++ /dev/null
@@ -1,157 +0,0 @@
-# Installation
-
-[TOC]
-
-> Note: gVisor supports only x86\_64 and requires Linux 4.14.77+
-> ([older Linux](./networking.md#gso)).
-
-## Versions
-
-The `runsc` binaries and repositories are available in multiple versions and
-release channels. You should pick the version you'd like to install. For
-experimentation, the nightly release is recommended. For production use, the
-latest release is recommended.
-
-After selecting an appropriate release channel from the options below, proceed
-to the preferred installation mechanism: manual or from an `apt` repository.
-
-### HEAD
-
-Binaries are available for every commit on the `master` branch, and are
-available at the following URL:
-
-`https://storage.googleapis.com/gvisor/releases/master/latest/runsc`
-
-Checksums for the release binary are at:
-
-`https://storage.googleapis.com/gvisor/releases/master/latest/runsc.sha512`
-
-For `apt` installation, use the `master` as the `${DIST}` below.
-
-### Nightly
-
-Nightly releases are built most nights from the master branch, and are available
-at the following URL:
-
-`https://storage.googleapis.com/gvisor/releases/nightly/latest/runsc`
-
-Checksums for the release binary are at:
-
-`https://storage.googleapis.com/gvisor/releases/nightly/latest/runsc.sha512`
-
-Specific nightly releases can be found at:
-
-`https://storage.googleapis.com/gvisor/releases/nightly/${yyyy-mm-dd}/runsc`
-
-Note that a release may not be available for every day.
-
-For `apt` installation, use the `nightly` as the `${DIST}` below.
-
-### Latest release
-
-The latest official release is available at the following URL:
-
-`https://storage.googleapis.com/gvisor/releases/release/latest`
-
-For `apt` installation, use the `release` as the `${DIST}` below.
-
-### Specific release
-
-A given release release is available at the following URL:
-
-`https://storage.googleapis.com/gvisor/releases/release/${yyyymmdd}`
-
-See the [releases][releases] page for information about specific releases.
-
-For `apt` installation of a specific release, which may include point updates,
-use the date of the release, e.g. `${yyyymmdd}`, as the `${DIST}` below.
-
-> Note: only newer releases may be available as `apt` repositories.
-
-### Point release
-
-A given point release is available at the following URL:
-
-`https://storage.googleapis.com/gvisor/releases/release/${yyyymmdd}.${rc}`
-
-Note that `apt` installation of a specific point release is not supported.
-
-## Install from an `apt` repository
-
-First, appropriate dependencies must be installed to allow `apt` to install
-packages via https:
-
-```bash
-sudo apt-get update && \
-sudo apt-get install -y \
- apt-transport-https \
- ca-certificates \
- curl \
- gnupg-agent \
- software-properties-common
-```
-
-Next, the key used to sign archives should be added to your `apt` keychain:
-
-```bash
-curl -fsSL https://gvisor.dev/archive.key | sudo apt-key add -
-```
-
-Based on the release type, you will need to substitute `${DIST}` below, using
-one of:
-
-* `master`: For HEAD.
-* `nightly`: For nightly releases.
-* `release`: For the latest release.
-* `${yyyymmdd}`: For a specific releases (see above).
-
-The repository for the release you wish to install should be added:
-
-```bash
-sudo add-apt-repository "deb https://storage.googleapis.com/gvisor/releases ${DIST} main"
-```
-
-For example, to install the latest official release, you can use:
-
-```bash
-sudo add-apt-repository "deb https://storage.googleapis.com/gvisor/releases release main"
-```
-
-Now the runsc package can be installed:
-
-```bash
-sudo apt-get update && sudo apt-get install -y runsc
-```
-
-If you have Docker installed, it will be automatically configured.
-
-## Install directly
-
-The binary URLs provided above can be used to install directly. For example, the
-latest nightly binary can be downloaded, validated, and placed in an appropriate
-location by running:
-
-```bash
-(
- set -e
- URL=https://storage.googleapis.com/gvisor/releases/nightly/latest
- wget ${URL}/runsc
- wget ${URL}/runsc.sha512
- sha512sum -c runsc.sha512
- rm -f runsc.sha512
- sudo mv runsc /usr/local/bin
- sudo chown root:root /usr/local/bin/runsc
- sudo chmod 0755 /usr/local/bin/runsc
-)
-```
-
-**It is important to copy this binary to a location that is accessible to all
-users, and ensure it is executable by all users**, since `runsc` executes itself
-as user `nobody` to avoid unnecessary privileges. The `/usr/local/bin` directory
-is a good place to put the `runsc` binary.
-
-After installation, try out `runsc` by following the
-[Docker Quick Start](./quick_start/docker.md) or
-[OCI Quick Start](./quick_start/oci.md).
-
-[releases]: https://github.com/google/gvisor/releases
diff --git a/g3doc/user_guide/networking.md b/g3doc/user_guide/networking.md
deleted file mode 100644
index 4aa394c91..000000000
--- a/g3doc/user_guide/networking.md
+++ /dev/null
@@ -1,85 +0,0 @@
-# Networking
-
-[TOC]
-
-gVisor implements its own network stack called [netstack][netstack]. All aspects
-of the network stack are handled inside the Sentry — including TCP connection
-state, control messages, and packet assembly — keeping it isolated from the host
-network stack. Data link layer packets are written directly to the virtual
-device inside the network namespace setup by Docker or Kubernetes.
-
-The IP address and routes configured for the device are transferred inside the
-sandbox. The loopback device runs exclusively inside the sandbox and does not
-use the host. You can inspect them by running:
-
-```bash
-docker run --rm --runtime=runsc alpine ip addr
-```
-
-## Network passthrough
-
-For high-performance networking applications, you may choose to disable the user
-space network stack and instead use the host network stack, including the
-loopback. Note that this mode decreases the isolation to the host.
-
-Add the following `runtimeArgs` to your Docker configuration
-(`/etc/docker/daemon.json`) and restart the Docker daemon:
-
-```json
-{
- "runtimes": {
- "runsc": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--network=host"
- ]
- }
- }
-}
-```
-
-## Disabling external networking
-
-To completely isolate the host and network from the sandbox, external networking
-can be disabled. The sandbox will still contain a loopback provided by netstack.
-
-Add the following `runtimeArgs` to your Docker configuration
-(`/etc/docker/daemon.json`) and restart the Docker daemon:
-
-```json
-{
- "runtimes": {
- "runsc": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--network=none"
- ]
- }
- }
-}
-```
-
-### Disable GSO {#gso}
-
-If your Linux is older than 4.14.17, you can disable Generic Segmentation
-Offload (GSO) to run with a kernel that is newer than 3.17. Add the
-`--gso=false` flag to your Docker runtime configuration
-(`/etc/docker/daemon.json`) and restart the Docker daemon:
-
-> Note: Network performance, especially for large payloads, will be greatly
-> reduced.
-
-```json
-{
- "runtimes": {
- "runsc": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--gso=false"
- ]
- }
- }
-}
-```
-
-[netstack]: https://github.com/google/netstack
diff --git a/g3doc/user_guide/platforms.md b/g3doc/user_guide/platforms.md
deleted file mode 100644
index 752025881..000000000
--- a/g3doc/user_guide/platforms.md
+++ /dev/null
@@ -1,95 +0,0 @@
-# Changing Platforms
-
-[TOC]
-
-This guide described how to change the
-[platform](../architecture_guide/platforms.md) used by `runsc`.
-
-## Prerequisites
-
-If you intend to run the KVM platform, you will also to have KVM installed on
-your system. If you are running a Debian based system like Debian or Ubuntu you
-can usually do this by ensuring the module is loaded, and permissions are
-appropriately set on the `/dev/kvm` device.
-
-If you have an Intel CPU:
-
-```bash
-sudo modprobe kvm-intel && sudo chmod a+rw /dev/kvm
-```
-
-If you have an AMD CPU:
-
-```bash
-sudo modprobe kvm-amd && sudo chmod a+rw /dev/kvm
-```
-
-If you are using a virtual machine you will need to make sure that nested
-virtualization is configured. Here are links to documents on how to set up
-nested virtualization in several popular environments:
-
-* Google Cloud: [Enabling Nested Virtualization for VM Instances][nested-gcp]
-* Microsoft Azure:
- [How to enable nested virtualization in an Azure VM][nested-azure]
-* VirtualBox: [Nested Virtualization][nested-virtualbox]
-* KVM: [Nested Guests][nested-kvm]
-
-***Note: nested virtualization will have poor performance and is historically a
-cause of security issues (e.g.
-[CVE-2018-12904](https://nvd.nist.gov/vuln/detail/CVE-2018-12904)). It is not
-recommended for production.***
-
-## Configuring Docker
-
-The platform is selected by the `--platform` command line flag passed to
-`runsc`. By default, the ptrace platform is selected. For example, to select the
-KVM platform, modify your Docker configuration (`/etc/docker/daemon.json`) to
-pass the `--platform` argument:
-
-```json
-{
- "runtimes": {
- "runsc": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--platform=kvm"
- ]
- }
- }
-}
-```
-
-You must restart the Docker daemon after making changes to this file, typically
-this is done via `systemd`:
-
-```bash
-sudo systemctl restart docker
-```
-
-Note that you may configure multiple runtimes using different platforms. For
-example, the following configuration has one configuration for ptrace and one
-for the KVM platform:
-
-```json
-{
- "runtimes": {
- "runsc-ptrace": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--platform=ptrace"
- ]
- },
- "runsc-kvm": {
- "path": "/usr/local/bin/runsc",
- "runtimeArgs": [
- "--platform=kvm"
- ]
- }
- }
-}
-```
-
-[nested-azure]: https://docs.microsoft.com/en-us/azure/virtual-machines/windows/nested-virtualization
-[nested-gcp]: https://cloud.google.com/compute/docs/instances/enable-nested-virtualization-vm-instances
-[nested-virtualbox]: https://www.virtualbox.org/manual/UserManual.html#nested-virt
-[nested-kvm]: https://www.linux-kvm.org/page/Nested_Guests
diff --git a/g3doc/user_guide/quick_start/BUILD b/g3doc/user_guide/quick_start/BUILD
deleted file mode 100644
index 63f17f9cb..000000000
--- a/g3doc/user_guide/quick_start/BUILD
+++ /dev/null
@@ -1,33 +0,0 @@
-load("//website:defs.bzl", "doc")
-
-package(
- default_visibility = ["//website:__pkg__"],
- licenses = ["notice"],
-)
-
-doc(
- name = "docker",
- src = "docker.md",
- category = "User Guide",
- permalink = "/docs/user_guide/quick_start/docker/",
- subcategory = "Quick Start",
- weight = "11",
-)
-
-doc(
- name = "oci",
- src = "oci.md",
- category = "User Guide",
- permalink = "/docs/user_guide/quick_start/oci/",
- subcategory = "Quick Start",
- weight = "12",
-)
-
-doc(
- name = "kubernetes",
- src = "kubernetes.md",
- category = "User Guide",
- permalink = "/docs/user_guide/quick_start/kubernetes/",
- subcategory = "Quick Start",
- weight = "13",
-)
diff --git a/g3doc/user_guide/quick_start/docker.md b/g3doc/user_guide/quick_start/docker.md
deleted file mode 100644
index 6ad594ecc..000000000
--- a/g3doc/user_guide/quick_start/docker.md
+++ /dev/null
@@ -1,96 +0,0 @@
-# Docker Quick Start
-
-> Note: This guide requires Docker version 17.09.0 or greater. Refer to the
-> [Docker documentation][docker] for how to install it.
-
-This guide will help you quickly get started running Docker containers using
-gVisor.
-
-First, follow the [Installation guide][install].
-
-If you use the `apt` repository or the `automated` install, then you can skip
-the next section and proceed straight to running a container.
-
-## Configuring Docker
-
-First you will need to configure Docker to use `runsc` by adding a runtime entry
-to your Docker configuration (e.g. `/etc/docker/daemon.json`). The easiest way
-to this is via the `runsc install` command. This will install a docker runtime
-named "runsc" by default.
-
-```bash
-sudo runsc install
-```
-
-You may also wish to install a runtime entry for debugging. The `runsc install`
-command can accept options that will be passed to the runtime when it is invoked
-by Docker.
-
-```bash
-sudo runsc install --runtime runsc-debug -- \
- --debug \
- --debug-log=/tmp/runsc-debug.log \
- --strace \
- --log-packets
-```
-
-You must restart the Docker daemon after installing the runtime. Typically this
-is done via `systemd`:
-
-```bash
-sudo systemctl restart docker
-```
-
-## Running a container
-
-Now run your container using the `runsc` runtime:
-
-```bash
-docker run --runtime=runsc --rm hello-world
-```
-
-You can also run a terminal to explore the container.
-
-```bash
-docker run --runtime=runsc --rm -it ubuntu /bin/bash
-```
-
-Many docker options are compatible with gVisor, try them out. Here is an
-example:
-
-```bash
-docker run --runtime=runsc --rm --link backend:database -v ~/bin:/tools:ro -p 8080:80 --cpus=0.5 -it busybox telnet towel.blinkenlights.nl
-```
-
-## Verify the runtime
-
-You can verify that you are running in gVisor using the `dmesg` command.
-
-```text
-$ docker run --runtime=runsc -it ubuntu dmesg
-[ 0.000000] Starting gVisor...
-[ 0.354495] Daemonizing children...
-[ 0.564053] Constructing home...
-[ 0.976710] Preparing for the zombie uprising...
-[ 1.299083] Creating process schedule...
-[ 1.479987] Committing treasure map to memory...
-[ 1.704109] Searching for socket adapter...
-[ 1.748935] Generating random numbers by fair dice roll...
-[ 2.059747] Digging up root...
-[ 2.259327] Checking naughty and nice process list...
-[ 2.610538] Rewriting operating system in Javascript...
-[ 2.613217] Ready!
-```
-
-Note that this is easily replicated by an attacker so applications should never
-use `dmesg` to verify the runtime in a security sensitive context.
-
-Next, look at the different options available for gVisor: [platform][platforms],
-[network][networking], [filesystem][filesystem].
-
-[docker]: https://docs.docker.com/install/
-[storage-driver]: https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-storage-driver
-[install]: /docs/user_guide/install/
-[filesystem]: /docs/user_guide/filesystem/
-[networking]: /docs/user_guide/networking/
-[platforms]: /docs/user_guide/platforms/
diff --git a/g3doc/user_guide/quick_start/kubernetes.md b/g3doc/user_guide/quick_start/kubernetes.md
deleted file mode 100644
index f875d8002..000000000
--- a/g3doc/user_guide/quick_start/kubernetes.md
+++ /dev/null
@@ -1,36 +0,0 @@
-# Kubernetes Quick Start
-
-gVisor can be used to run Kubernetes pods and has several integration points
-with Kubernetes.
-
-## Using Minikube
-
-gVisor can run sandboxed containers in a Kubernetes cluster with Minikube. After
-the gVisor addon is enabled, pods with `io.kubernetes.cri.untrusted-workload`
-set to true will execute with `runsc`. Follow [these instructions][minikube] to
-enable gVisor addon.
-
-## Using Containerd
-
-You can also setup Kubernetes nodes to run pods in gvisor using the
-[containerd][containerd] CRI runtime and the `gvisor-containerd-shim`. You can
-use either the `io.kubernetes.cri.untrusted-workload` annotation or
-[RuntimeClass][runtimeclass] to run Pods with `runsc`. You can find instructions
-[here][gvisor-containerd-shim].
-
-## Using GKE Sandbox
-
-[GKE Sandbox][gke-sandbox] is available in [Google Kubernetes Engine][gke]. You
-just need to deploy a node pool with gVisor enabled in your cluster, and it will
-run pods annotated with `runtimeClassName: gvisor` inside a gVisor sandbox for
-you. [Here][wordpress-quick] is a quick example showing how to deploy a
-WordPress site. You can view the full documentation [here][gke-sandbox-docs].
-
-[containerd]: https://containerd.io/
-[minikube]: https://github.com/kubernetes/minikube/blob/master/deploy/addons/gvisor/README.md
-[gke]: https://cloud.google.com/kubernetes-engine/
-[gke-sandbox]: https://cloud.google.com/kubernetes-engine/sandbox/
-[gke-sandbox-docs]: https://cloud.google.com/kubernetes-engine/docs/how-to/sandbox-pods
-[gvisor-containerd-shim]: https://github.com/google/gvisor-containerd-shim
-[runtimeclass]: https://kubernetes.io/docs/concepts/containers/runtime-class/
-[wordpress-quick]: /docs/tutorials/kubernetes/
diff --git a/g3doc/user_guide/quick_start/oci.md b/g3doc/user_guide/quick_start/oci.md
deleted file mode 100644
index 877169145..000000000
--- a/g3doc/user_guide/quick_start/oci.md
+++ /dev/null
@@ -1,45 +0,0 @@
-# OCI Quick Start
-
-This guide will quickly get you started running your first gVisor sandbox
-container using the runtime directly with the default platform.
-
-First, follow the [Installation guide][install].
-
-## Run an OCI compatible container
-
-Now we will create an [OCI][oci] container bundle to run our container. First we
-will create a root directory for our bundle.
-
-```bash
-mkdir bundle
-cd bundle
-```
-
-Create a root file system for the container. We will use the Docker hello-world
-image as the basis for our container.
-
-```bash
-mkdir rootfs
-docker export $(docker create hello-world) | tar -xf - -C rootfs
-```
-
-Next, create an specification file called `config.json` that contains our
-container specification. We will update the default command it runs to `/hello`
-in the `hello-world` container.
-
-```bash
-runsc spec
-sed -i 's;"sh";"/hello";' config.json
-```
-
-Finally run the container.
-
-```bash
-sudo runsc run hello
-```
-
-Next try [using CNI to set up networking](../../../tutorials/cni/) or
-[running gVisor using Docker](../docker/).
-
-[oci]: https://opencontainers.org/
-[install]: /docs/user_guide/install
diff --git a/g3doc/user_guide/tutorials/BUILD b/g3doc/user_guide/tutorials/BUILD
deleted file mode 100644
index caae98623..000000000
--- a/g3doc/user_guide/tutorials/BUILD
+++ /dev/null
@@ -1,37 +0,0 @@
-load("//website:defs.bzl", "doc")
-
-package(
- default_visibility = ["//website:__pkg__"],
- licenses = ["notice"],
-)
-
-doc(
- name = "docker",
- src = "docker.md",
- category = "User Guide",
- permalink = "/docs/tutorials/docker/",
- subcategory = "Tutorials",
- weight = "21",
-)
-
-doc(
- name = "cni",
- src = "cni.md",
- category = "User Guide",
- permalink = "/docs/tutorials/cni/",
- subcategory = "Tutorials",
- weight = "22",
-)
-
-doc(
- name = "kubernetes",
- src = "kubernetes.md",
- category = "User Guide",
- data = [
- "add-node-pool.png",
- "node-pool-button.png",
- ],
- permalink = "/docs/tutorials/kubernetes/",
- subcategory = "Tutorials",
- weight = "33",
-)
diff --git a/g3doc/user_guide/tutorials/add-node-pool.png b/g3doc/user_guide/tutorials/add-node-pool.png
deleted file mode 100644
index e4560359b..000000000
--- a/g3doc/user_guide/tutorials/add-node-pool.png
+++ /dev/null
Binary files differ
diff --git a/g3doc/user_guide/tutorials/cni.md b/g3doc/user_guide/tutorials/cni.md
deleted file mode 100644
index ad6c9fa59..000000000
--- a/g3doc/user_guide/tutorials/cni.md
+++ /dev/null
@@ -1,172 +0,0 @@
-# Using CNI
-
-This tutorial will show you how to set up networking for a gVisor sandbox using
-the
-[Container Networking Interface (CNI)](https://github.com/containernetworking/cni).
-
-## Install CNI Plugins
-
-First you will need to install the CNI plugins. CNI plugins are used to set up a
-network namespace that `runsc` can use with the sandbox.
-
-Start by creating the directories for CNI plugin binaries:
-
-```
-sudo mkdir -p /opt/cni/bin
-```
-
-Download the CNI plugins:
-
-```
-wget https://github.com/containernetworking/plugins/releases/download/v0.8.3/cni-plugins-linux-amd64-v0.8.3.tgz
-```
-
-Next, unpack the plugins into the CNI binary directory:
-
-```
-sudo tar -xvf cni-plugins-linux-amd64-v0.8.3.tgz -C /opt/cni/bin/
-```
-
-## Configure CNI Plugins
-
-This section will show you how to configure CNI plugins. This tutorial will use
-the "bridge" and "loopback" plugins which will create the necessary bridge and
-loopback devices in our network namespace. However, you should be able to use
-any CNI compatible plugin to set up networking for gVisor sandboxes.
-
-The bridge plugin configuration specifies the IP address subnet range for IP
-addresses that will be assigned to sandboxes as well as the network routing
-configuration. This tutorial will assign IP addresses from the `10.22.0.0/16`
-range and allow all outbound traffic, however you can modify this configuration
-to suit your use case.
-
-Create the bridge and loopback plugin configurations:
-
-```
-sudo mkdir -p /etc/cni/net.d
-
-sudo sh -c 'cat > /etc/cni/net.d/10-bridge.conf << EOF
-{
- "cniVersion": "0.4.0",
- "name": "mynet",
- "type": "bridge",
- "bridge": "cni0",
- "isGateway": true,
- "ipMasq": true,
- "ipam": {
- "type": "host-local",
- "subnet": "10.22.0.0/16",
- "routes": [
- { "dst": "0.0.0.0/0" }
- ]
- }
-}
-EOF'
-
-sudo sh -c 'cat > /etc/cni/net.d/99-loopback.conf << EOF
-{
- "cniVersion": "0.4.0",
- "name": "lo",
- "type": "loopback"
-}
-EOF'
-```
-
-## Create a Network Namespace
-
-For each gVisor sandbox you will create a network namespace and configure it
-using CNI. First, create a random network namespace name and then create the
-namespace.
-
-The network namespace path will then be `/var/run/netns/${CNI_CONTAINERID}`.
-
-```
-export CNI_PATH=/opt/cni/bin
-export CNI_CONTAINERID=$(printf '%x%x%x%x' $RANDOM $RANDOM $RANDOM $RANDOM)
-export CNI_COMMAND=ADD
-export CNI_NETNS=/var/run/netns/${CNI_CONTAINERID}
-
-sudo ip netns add ${CNI_CONTAINERID}
-```
-
-Next, run the bridge and loopback plugins to apply the configuration that was
-created earlier to the namespace. Each plugin outputs some JSON indicating the
-results of executing the plugin. For example, The bridge plugin's response
-includes the IP address assigned to the ethernet device created in the network
-namespace. Take note of the IP address for use later.
-
-```
-export CNI_IFNAME="eth0"
-sudo -E /opt/cni/bin/bridge < /etc/cni/net.d/10-bridge.conf
-export CNI_IFNAME="lo"
-sudo -E /opt/cni/bin/loopback < /etc/cni/net.d/99-loopback.conf
-```
-
-Get the IP address assigned to our sandbox:
-
-```
-POD_IP=$(sudo ip netns exec ${CNI_CONTAINERID} ip -4 addr show eth0 | grep -oP '(?<=inet\s)\d+(\.\d+){3}')
-```
-
-## Create the OCI Bundle
-
-Now that our network namespace is created and configured, we can create the OCI
-bundle for our container. As part of the bundle's `config.json` we will specify
-that the container use the network namespace that we created.
-
-The container will run a simple python webserver that we will be able to connect
-to via the IP address assigned to it via the bridge CNI plugin.
-
-Create the bundle and root filesystem directories:
-
-```
-sudo mkdir -p bundle
-cd bundle
-sudo mkdir rootfs
-sudo docker export $(docker create python) | sudo tar --same-owner -pxf - -C rootfs
-sudo mkdir -p rootfs/var/www/html
-sudo sh -c 'echo "Hello World!" > rootfs/var/www/html/index.html'
-```
-
-Next create the `config.json` specifying the network namespace. `sudo
-/usr/local/bin/runsc spec sudo sed -i 's;"sh";"python", "-m", "http.server";'
-config.json sudo sed -i "s;\"cwd\": \"/\";\"cwd\": \"/var/www/html\";"
-config.json sudo sed -i "s;\"type\": \"network\";\"type\":
-\"network\",\n\t\t\t\t\"path\": \"/var/run/netns/${CNI_CONTAINERID}\";"
-config.json`
-
-## Run the Container
-
-Now we can run and connect to the webserver. Run the container in gVisor. Use
-the same ID used for the network namespace to be consistent:
-
-```
-sudo runsc run -detach ${CNI_CONTAINERID}
-```
-
-Connect to the server via the sandbox's IP address:
-
-```
-curl http://${POD_IP}:8000/
-```
-
-You should see the server returning `Hello World!`.
-
-## Cleanup
-
-After you are finished running the container, you can clean up the network
-namespace .
-
-```
-sudo runsc kill ${CNI_CONTAINERID}
-sudo runsc delete ${CNI_CONTAINERID}
-
-export CNI_COMMAND=DEL
-
-export CNI_IFNAME="lo"
-sudo -E /opt/cni/bin/loopback < /etc/cni/net.d/99-loopback.conf
-export CNI_IFNAME="eth0"
-sudo -E /opt/cni/bin/bridge < /etc/cni/net.d/10-bridge.conf
-
-sudo ip netns delete ${CNI_CONTAINERID}
-```
diff --git a/g3doc/user_guide/tutorials/docker.md b/g3doc/user_guide/tutorials/docker.md
deleted file mode 100644
index 705560038..000000000
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+++ /dev/null
@@ -1,68 +0,0 @@
-# WordPress with Docker
-
-This page shows you how to deploy a sample [WordPress][wordpress] site using
-[Docker][docker].
-
-### Before you begin
-
-[Follow these instructions][docker-install] to install runsc with Docker. This
-document assumes that the runtime name chosen is `runsc`.
-
-### Running WordPress
-
-Now, let's deploy a WordPress site using Docker. WordPress site requires two
-containers: web server in the frontend, MySQL database in the backend.
-
-First, let's define a few environment variables that are shared between both
-containers:
-
-```bash
-export MYSQL_PASSWORD=${YOUR_SECRET_PASSWORD_HERE?}
-export MYSQL_DB=wordpress
-export MYSQL_USER=wordpress
-```
-
-Next, let's start the database container running MySQL and wait until the
-database is initialized:
-
-```bash
-docker run --runtime=runsc --name mysql -d \
- -e MYSQL_RANDOM_ROOT_PASSWORD=1 \
- -e MYSQL_PASSWORD="${MYSQL_PASSWORD}" \
- -e MYSQL_DATABASE="${MYSQL_DB}" \
- -e MYSQL_USER="${MYSQL_USER}" \
- mysql:5.7
-
-# Wait until this message appears in the log.
-docker logs mysql |& grep 'port: 3306 MySQL Community Server (GPL)'
-```
-
-Once the database is running, you can start the WordPress frontend. We use the
-`--link` option to connect the frontend to the database, and expose the
-WordPress to port 8080 on the localhost.
-
-```bash
-docker run --runtime=runsc --name wordpress -d \
- --link mysql:mysql \
- -p 8080:80 \
- -e WORDPRESS_DB_HOST=mysql \
- -e WORDPRESS_DB_USER="${MYSQL_USER}" \
- -e WORDPRESS_DB_PASSWORD="${MYSQL_PASSWORD}" \
- -e WORDPRESS_DB_NAME="${MYSQL_DB}" \
- -e WORDPRESS_TABLE_PREFIX=wp_ \
- wordpress
-```
-
-Now, you can access the WordPress website pointing your favorite browser to
-<http://localhost:8080>.
-
-Congratulations! You have just deployed a WordPress site using Docker.
-
-### What's next
-
-[Learn how to deploy WordPress with Kubernetes][wordpress-k8s].
-
-[docker]: https://www.docker.com/
-[docker-install]: /docs/user_guide/quick_start/docker/
-[wordpress]: https://wordpress.com/
-[wordpress-k8s]: /docs/tutorials/kubernetes/
diff --git a/g3doc/user_guide/tutorials/kubernetes.md b/g3doc/user_guide/tutorials/kubernetes.md
deleted file mode 100644
index d2a94b1b7..000000000
--- a/g3doc/user_guide/tutorials/kubernetes.md
+++ /dev/null
@@ -1,134 +0,0 @@
-# WordPress with Kubernetes
-
-This page shows you how to deploy a sample [WordPress][wordpress] site using
-[GKE Sandbox][gke-sandbox].
-
-### Before you begin
-
-Take the following steps to enable the Kubernetes Engine API:
-
-1. Visit the [Kubernetes Engine page][project-selector] in the Google Cloud
- Platform Console.
-1. Create or select a project.
-
-### Creating a node pool with gVisor enabled
-
-Create a node pool inside your cluster with option `--sandbox type=gvisor` added
-to the command, like below:
-
-```bash
-gcloud beta container node-pools create sandbox-pool --cluster=${CLUSTER_NAME} --image-type=cos_containerd --sandbox type=gvisor
-```
-
-If you prefer to use the console, select your cluster and select the **ADD NODE
-POOL** button:
-
-![+ ADD NODE POOL](./node-pool-button.png)
-
-Then select the **Image type** with **Containerd** and select **Enable sandbox
-with gVisor** option. Select other options as you like:
-
-![+ NODE POOL](./add-node-pool.png)
-
-### Check that gVisor is enabled
-
-The gvisor RuntimeClass is instantiated during node creation. You can check for
-the existence of the gvisor RuntimeClass using the following command:
-
-```bash
-kubectl get runtimeclasses
-```
-
-### Wordpress deployment
-
-Now, let's deploy a WordPress site using GKE Sandbox. WordPress site requires
-two pods: web server in the frontend, MySQL database in the backend. Both
-applications use PersistentVolumes to store the site data data. In addition,
-they use secret store to share MySQL password between them.
-
-First, let's download the deployment configuration files to add the runtime
-class annotation to them:
-
-```bash
-curl -LO https://k8s.io/examples/application/wordpress/wordpress-deployment.yaml
-curl -LO https://k8s.io/examples/application/wordpress/mysql-deployment.yaml
-```
-
-Add a **spec.template.spec.runtimeClassName** set to **gvisor** to both files,
-as shown below:
-
-**wordpress-deployment.yaml:** ```yaml apiVersion: v1 kind: Service metadata:
-name: wordpress labels: app: wordpress spec: ports: - port: 80 selector: app:
-wordpress tier: frontend
-
-## type: LoadBalancer
-
-apiVersion: v1 kind: PersistentVolumeClaim metadata: name: wp-pv-claim labels:
-app: wordpress spec: accessModes: - ReadWriteOnce resources: requests:
-
-## storage: 20Gi
-
-apiVersion: apps/v1 kind: Deployment metadata: name: wordpress labels: app:
-wordpress spec: selector: matchLabels: app: wordpress tier: frontend strategy:
-type: Recreate template: metadata: labels: app: wordpress tier: frontend spec:
-runtimeClassName: gvisor # ADD THIS LINE containers: - image:
-wordpress:4.8-apache name: wordpress env: - name: WORDPRESS_DB_HOST value:
-wordpress-mysql - name: WORDPRESS_DB_PASSWORD valueFrom: secretKeyRef: name:
-mysql-pass key: password ports: - containerPort: 80 name: wordpress
-volumeMounts: - name: wordpress-persistent-storage mountPath: /var/www/html
-volumes: - name: wordpress-persistent-storage persistentVolumeClaim: claimName:
-wp-pv-claim ```
-
-**mysql-deployment.yaml:** ```yaml apiVersion: v1 kind: Service metadata: name:
-wordpress-mysql labels: app: wordpress spec: ports: - port: 3306 selector: app:
-wordpress tier: mysql
-
-## clusterIP: None
-
-apiVersion: v1 kind: PersistentVolumeClaim metadata: name: mysql-pv-claim
-labels: app: wordpress spec: accessModes: - ReadWriteOnce resources: requests:
-
-## storage: 20Gi
-
-apiVersion: apps/v1 kind: Deployment metadata: name: wordpress-mysql labels:
-app: wordpress spec: selector: matchLabels: app: wordpress tier: mysql strategy:
-type: Recreate template: metadata: labels: app: wordpress tier: mysql spec:
-runtimeClassName: gvisor # ADD THIS LINE containers: - image: mysql:5.6 name:
-mysql env: - name: MYSQL_ROOT_PASSWORD valueFrom: secretKeyRef: name: mysql-pass
-key: password ports: - containerPort: 3306 name: mysql volumeMounts: - name:
-mysql-persistent-storage mountPath: /var/lib/mysql volumes: - name:
-mysql-persistent-storage persistentVolumeClaim: claimName: mysql-pv-claim ```
-
-Note that apart from `runtimeClassName: gvisor`, nothing else about the
-Deployment has is changed.
-
-You are now ready to deploy the entire application. Just create a secret to
-store MySQL's password and *apply* both deployments:
-
-```bash
-kubectl create secret generic mysql-pass --from-literal=password=${YOUR_SECRET_PASSWORD_HERE?}
-kubectl apply -f mysql-deployment.yaml
-kubectl apply -f wordpress-deployment.yaml
-```
-
-Wait for the deployments to be ready and an external IP to be assigned to the
-Wordpress service:
-
-```bash
-watch kubectl get service wordpress
-```
-
-Now, copy the service `EXTERNAL-IP` from above to your favorite browser to view
-and configure your new WordPress site.
-
-Congratulations! You have just deployed a WordPress site using GKE Sandbox.
-
-### What's next
-
-To learn more about GKE Sandbox and how to run your deployment securely, take a
-look at the [documentation][gke-sandbox-docs].
-
-[gke-sandbox-docs]: https://cloud.google.com/kubernetes-engine/docs/how-to/sandbox-pods
-[gke-sandbox]: https://cloud.google.com/kubernetes-engine/sandbox/
-[project-selector]: https://console.cloud.google.com/projectselector/kubernetes
-[wordpress]: https://wordpress.com/
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