misc: updates to run simulated omicron in container (#8996)

In oxidecomputer/terraform-provider-oxide#497,
we're proposing to run the acceptance tests for the terraform provider
against simulated omicron. We're running omicron in a docker container
for portability. This PR contains a few small script changes to omicron
to make it work in a container:

* Optionally skip sudo, since some container environments don't include
it.
* Update the example config to listen on 0.0.0.0, so that we can reach
simulated omicron from outside the container.

---------

Co-authored-by: Josh Carp <[email protected]>

Author: jmcarp

dev-tools/omicron-dev/src/main.rs

@@ -12,6 +12,10 @@ use nexus_config::NexusConfig;
 use nexus_test_interface::NexusServer;
 use nexus_test_utils::resource_helpers::DiskTest;
 use signal_hook_tokio::Signals;
+use std::fs;
+
+const DEFAULT_NEXUS_CONFIG: &str =
+    concat!(env!("CARGO_MANIFEST_DIR"), "/../../nexus/examples/config.toml");
 
 fn main() -> anyhow::Result<()> {
     oxide_tokio_rt::run(async {
@@ -50,6 +54,9 @@ struct RunAllArgs {
     /// Override the gateway server configuration file.
     #[clap(long, default_value = DEFAULT_SP_SIM_CONFIG)]
     gateway_config: Utf8PathBuf,
+    /// Override the nexus configuration file.
+    #[clap(long, default_value = DEFAULT_NEXUS_CONFIG)]
+    nexus_config: Utf8PathBuf,
 }
 
 impl RunAllArgs {
@@ -60,9 +67,10 @@ impl RunAllArgs {
         let mut signal_stream = signals.fuse();
 
         // Read configuration.
-        let config_str = include_str!("../../../nexus/examples/config.toml");
-        let mut config: NexusConfig =
-            toml::from_str(config_str).context("parsing example config")?;
+        let config_str = fs::read_to_string(&self.nexus_config)?;
+        let mut config: NexusConfig = toml::from_str(&config_str).context(
+            format!("parsing config: {}", self.nexus_config.as_str()),
+        )?;
         config.pkg.log = dropshot::ConfigLogging::File {
             // See LogContext::new(),
             path: "UNUSED".to_string().into(),

tools/install_builder_prerequisites.sh

@@ -31,12 +31,14 @@ function usage
 
 ASSUME_YES="false"
 SKIP_PATH_CHECK="false"
+OMIT_SUDO="false"
 RETRY_ATTEMPTS=3
-while getopts ypr: flag
+while getopts ypsr: flag
 do
   case "${flag}" in
     y) ASSUME_YES="true" ;;
     p) SKIP_PATH_CHECK="true" ;;
+    s) OMIT_SUDO="true" ;;
     r) RETRY_ATTEMPTS=${OPTARG} ;;
     *) usage
   esac
@@ -130,11 +132,16 @@ function install_packages {
       'libclang-dev'
       'libsqlite3-dev'
     )
-    sudo apt-get update
+    if [[ "${OMIT_SUDO}" == "false" ]]; then
+      maybe_sudo="sudo"
+    else
+      maybe_sudo=""
+    fi
+    $maybe_sudo apt-get update
     if [[ "${ASSUME_YES}" == "true" ]]; then
-        sudo apt-get install -y "${packages[@]}"
+        $maybe_sudo apt-get install -y "${packages[@]}"
     else
-        confirm "Install (or update) [${packages[*]}]?" && sudo apt-get install "${packages[@]}"
+        confirm "Install (or update) [${packages[*]}]?" && $maybe_sudo apt-get install "${packages[@]}"
     fi
   elif [[ "${HOST_OS}" == "SunOS" ]]; then
     CLANGVER=15

tools/install_runner_prerequisites.sh

@@ -30,12 +30,14 @@ function usage
 }
 
 ASSUME_YES="false"
+OMIT_SUDO="false"
 RETRY_ATTEMPTS=3
-while getopts ypr: flag
+while getopts ypsr: flag
 do
   case "${flag}" in
     y) ASSUME_YES="true" ;;
     p) continue ;;
+    s) OMIT_SUDO="true" ;;
     r) RETRY_ATTEMPTS=${OPTARG} ;;
     *) usage
   esac
@@ -139,11 +141,16 @@ function install_packages {
       'libssl3'
       'libxmlsec1-openssl'
     )
-    sudo apt-get update
+    if [[ "${OMIT_SUDO}" == "false" ]]; then
+      maybe_sudo="sudo"
+    else
+      maybe_sudo=""
+    fi
+    $maybe_sudo apt-get update
     if [[ "${ASSUME_YES}" == "true" ]]; then
-      sudo apt-get install -y "${packages[@]}"
+      $maybe_sudo apt-get install -y "${packages[@]}"
     else
-      confirm "Install (or update) [${packages[*]}]?" && sudo apt-get install "${packages[@]}"
+      confirm "Install (or update) [${packages[*]}]?" && $maybe_sudo apt-get install "${packages[@]}"
     fi
   else
     echo "Unsupported OS: ${HOST_OS}"