From 7f8172edf583e0d26bee5e06578a442c7507ba6f Mon Sep 17 00:00:00 2001
From: Adin Scannell <ascannell@google.com>
Date: Tue, 5 May 2020 18:06:46 -0700
Subject: Restructure shim packages for merging.

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 shim/untrusted-workload-quickstart.md | 212 ++++++++++++++++++++++++++++++++++
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 create mode 100644 shim/untrusted-workload-quickstart.md

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+# Untrusted Workload Quickstart
+
+This document describes how to install and run the `gvisor-containerd-shim`
+using the untrusted workload CRI extension. This requires containerd 1.1 or
+later.
+
+*Note: The untrusted workload CRI extension is deprecated by containerd. If you
+are using containerd 1.2, please consider using runtime handler.*
+
+## Requirements
+
+- **runsc**: See the [gVisor documentation](https://github.com/google/gvisor) for information on how to install runsc.
+- **containerd**: See the [containerd website](https://containerd.io/) for information on how to install containerd.
+
+## Install
+
+### Install gvisor-containerd-shim
+
+1. Download the latest release of the `gvisor-containerd-shim`. See the
+   [releases page](https://github.com/google/gvisor-containerd-shim/releases)
+
+[embedmd]:# (../test/e2e/shim-install.sh shell /{ # Step 1/ /^}/)
+```shell
+{ # Step 1(release): Install gvisor-containerd-shim
+LATEST_RELEASE=$(wget -qO - https://api.github.com/repos/google/gvisor-containerd-shim/releases | grep -oP '(?<="browser_download_url": ")https://[^"]*gvisor-containerd-shim.linux-amd64' | head -1)
+wget -O gvisor-containerd-shim ${LATEST_RELEASE}
+chmod +x gvisor-containerd-shim
+sudo mv gvisor-containerd-shim /usr/local/bin/gvisor-containerd-shim
+}
+```
+
+2. Create the configuration for the gvisor shim in
+   `/etc/containerd/gvisor-containerd-shim.toml`:
+
+[embedmd]:# (../test/e2e/shim-install.sh shell /{ # Step 2/ /^}/)
+```shell
+{ # Step 2: Create the gvisor-containerd-shim.toml
+cat <<EOF | sudo tee /etc/containerd/gvisor-containerd-shim.toml
+# This is the path to the default runc containerd-shim.
+runc_shim = "/usr/local/bin/containerd-shim"
+EOF
+}
+```
+
+### Configure containerd
+
+1. Update `/etc/containerd/config.toml`. Be sure to update the path to
+   `gvisor-containerd-shim` and `runsc` if necessary:
+
+[embedmd]:# (../test/e2e/untrusted-workload/install.sh shell /{ # Step 1/ /^}/)
+```shell
+{ # Step 1: Create containerd config.toml
+cat <<EOF | sudo tee /etc/containerd/config.toml
+disabled_plugins = ["restart"]
+[plugins.linux]
+  shim = "/usr/local/bin/gvisor-containerd-shim"
+  shim_debug = true
+[plugins.cri.containerd.untrusted_workload_runtime]
+  runtime_type = "io.containerd.runtime.v1.linux"
+  runtime_engine = "/usr/local/bin/runsc"
+  runtime_root = "/run/containerd/runsc"
+EOF
+}
+```
+
+2. Restart `containerd`
+
+```shell
+sudo systemctl restart containerd
+```
+
+## Usage
+
+You can run containers in gVisor via containerd's CRI.
+
+### Install crictl
+
+1. Download and install the crictl binary:
+
+[embedmd]:# (../test/e2e/crictl-install.sh shell /{ # Step 1/ /^}/)
+```shell
+{ # Step 1: Download crictl
+wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.13.0/crictl-v1.13.0-linux-amd64.tar.gz
+tar xf crictl-v1.13.0-linux-amd64.tar.gz
+sudo mv crictl /usr/local/bin
+}
+```
+
+2. Write the crictl configuration file
+
+[embedmd]:# (../test/e2e/crictl-install.sh shell /{ # Step 2/ /^}/)
+```shell
+{ # Step 2: Configure crictl
+cat <<EOF | sudo tee /etc/crictl.yaml
+runtime-endpoint: unix:///run/containerd/containerd.sock
+EOF
+}
+```
+
+### Create the nginx Sandbox in gVisor
+
+1. Pull the nginx image
+
+[embedmd]:# (../test/e2e/untrusted-workload/usage.sh shell /{ # Step 1/ /^}/)
+```shell
+{ # Step 1: Pull the nginx image
+sudo crictl pull nginx
+}
+```
+
+2. Create the sandbox creation request
+
+[embedmd]:# (../test/e2e/untrusted-workload/usage.sh shell /{ # Step 2/ /^EOF\n}/)
+```shell
+{ # Step 2: Create sandbox.json
+cat <<EOF | tee sandbox.json
+{
+    "metadata": {
+        "name": "nginx-sandbox",
+        "namespace": "default",
+        "attempt": 1,
+        "uid": "hdishd83djaidwnduwk28bcsb"
+    },
+    "annotations": {
+      "io.kubernetes.cri.untrusted-workload": "true"
+    },
+    "linux": {
+    },
+    "log_directory": "/tmp"
+}
+EOF
+}
+```
+
+3. Create the pod in gVisor
+
+[embedmd]:# (../test/e2e/untrusted-workload/usage.sh shell /{ # Step 3/ /^}/)
+```shell
+{ # Step 3: Create the sandbox
+SANDBOX_ID=$(sudo crictl runp sandbox.json)
+}
+```
+
+### Run the nginx Container in the Sandbox
+
+1. Create the nginx container creation request
+
+[embedmd]:# (../test/e2e/run-container.sh shell /{ # Step 1/ /^EOF\n}/)
+```shell
+{ # Step 1: Create nginx container config
+cat <<EOF | tee container.json
+{
+  "metadata": {
+      "name": "nginx"
+    },
+  "image":{
+      "image": "nginx"
+    },
+  "log_path":"nginx.0.log",
+  "linux": {
+  }
+}
+EOF
+}
+```
+
+2. Create the nginx container
+
+[embedmd]:# (../test/e2e/run-container.sh shell /{ # Step 2/ /^}/)
+```shell
+{ # Step 2: Create nginx container
+CONTAINER_ID=$(sudo crictl create ${SANDBOX_ID} container.json sandbox.json)
+}
+```
+
+3. Start the nginx container
+
+[embedmd]:# (../test/e2e/run-container.sh shell /{ # Step 3/ /^}/)
+```shell
+{ # Step 3: Start nginx container
+sudo crictl start ${CONTAINER_ID}
+}
+```
+
+### Validate the container
+
+1. Inspect the created pod
+
+[embedmd]:# (../test/e2e/validate.sh shell /{ # Step 1/ /^}/)
+```shell
+{ # Step 1: Inspect the pod
+sudo crictl inspectp ${SANDBOX_ID}
+}
+```
+
+2. Inspect the nginx container
+
+[embedmd]:# (../test/e2e/validate.sh shell /{ # Step 2/ /^}/)
+```shell
+{ # Step 2: Inspect the container
+sudo crictl inspect ${CONTAINER_ID}
+}
+```
+
+3. Verify that nginx is running in gVisor
+
+[embedmd]:# (../test/e2e/validate.sh shell /{ # Step 3/ /^}/)
+```shell
+{ # Step 3: Check dmesg
+sudo crictl exec ${CONTAINER_ID} dmesg | grep -i gvisor
+}
+```
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