# `vcpkg-eg-mac` VMs

This is the checklist for what the vcpkg team does when updating the macOS machines in the pool.

## Creating new base images

### Prerequisites

- [ ] A Parallels license for amd64 or [macosvm](https://github.com/s-u/macosvm) allow-listed
  by macOS for arm64. Note that the directory 'Parallels' is still used when using `macosvm`
  just so that scripts know where to find the VM and friends.
- [ ] An Xcode installer - you can get this from Apple's developer website,
  although you'll need to sign in first: <https://developer.apple.com/downloads>  
  If you are doing this from a local macos box, you can skip to the "update the macos host" step.  

### Instructions (AMD64)

- [ ] Go to https://dev.azure.com/vcpkg/public/_settings/agentqueues , pick the current osx queue,
      and delete one of the agents that are idle.
- [ ] Go to that machine in the KVM. (Passwords are stored as secrets in the CPP_GITHUB\vcpkg\vcpkgmm-passwords key vault)
- [ ] Open the Parallels Control Center, and delete the active VM.
- [ ] Update the macos host
- [ ] Update or install parallels
- [ ] Download the macOS installer from the app store. See https://support.apple.com/en-us/102662  
      Note: This portion of the instructions is that which breaks most often depending on what Parallels and macOS are doing.
      You might need to use `softwareupdate --fetch-full-installer --full-installer-version 15.6` and point Parallels
      at that resulting installer in 'Applications' instead.
- [ ] Run parallels, and select that installer you just downloaded. Name the VM "vcpkg-osx-<DATE>-amd64", for example "vcpkg-osx-2025-08-12-amd64".
- [ ] When creating the VM, customize the hardware to the following:
    * 12 processors
    * 24000 MB of memory
    * 350 GB disk
    * Disable sound output
    * Disable microphone
    * Do not share mac camera
- [ ] Install MacOS like you would on real hardware.
    * Set up as new
    * Apple ID: 'Set Up Later' / Skip
    * Account name: vcpkg
    * A very similar password :)
    * Don't enable Location Services
    * Share crashes with app developers
    * Don't enable Ask Siri
- [ ] Install Parallels Tools
- [ ] Restart the VM
- [ ] Set the desktop wallpaper to a fixed color from Settings -> Wallpaper . (This makes the KVM a lot easier to use :) )
- [ ] Disable automatic updates in the VM: Settings -> General -> Automatic Updates -> Disable them all
- [ ] Enable remote login in System Settings -> General -> Sharing -> Remote Login
- [ ] Update the Azure Agent URI in setup-box.sh to the current version. You can find this by going to the agent pool, selecting "New agent", picking macOS, and copying the link. For example https://download.agent.dev.azure.com/agent/4.259.0/vsts-agent-osx-x64-4.259.0.tar.gz
- [ ] In the guest, set the vcpkg user to be able to use sudo without a password. From a dev machine:
    ```sh
    ssh vcpkg@HOSTMACHINE
    export GUEST_IP=`prlctl list --full | sed -nr 's/^.*running *([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}).*/\1/p'`
    export SSH_COOKIE=vcpkg@$GUEST_IP
    ssh $SSH_COOKIE  # and then enter the password here
    printf 'vcpkg\tALL=(ALL)\tNOPASSWD:\tALL\n' | sudo tee -a '/etc/sudoers.d/vcpkg'
    sudo chmod 0440 '/etc/sudoers.d/vcpkg'
    exit
    exit
    ```
- [ ] Copy setup-guest, setup-box.sh, and the xcode installer renamed to 'clt.dmg' to the host, and run setup-guest.sh.  From a developer machine:
    ```sh
    scp ./setup-guest.sh vcpkg@HOSTMACHINE:/Users/vcpkg
    scp ./setup-box.sh vcpkg@HOSTMACHINE:/Users/vcpkg
    scp path/to/console/tools.dmg vcpkg@HOSTMACHINE:/Users/vcpkg/clt.dmg
    ssh vcpkg@HOSTMACHINE
    rm ~/.ssh/known_hosts
    chmod +x setup-guest.sh
    ./setup-guest.sh
    rm setup-guest.sh
    rm setup-box.sh
    rm clt.dmg
    exit
    ```
- [ ] Shut down the VM cleanly
- [ ] Ensure that there is no host system specific 'hardware' like macOS install .isos attached.
- [ ] Set the VM 'Isolated'
- [ ] Boot and then cleanly shut down the VM.
- [ ] In Parallels control center, right click the VM and select "Prepare for Transfer"
- [ ] In Parallels control center, right click the VM and remove it, but "Keep Files"
- [ ] Copy the packaged VM to Azure Storage, with something like:
    ```sh
    ssh vcpkg@HOSTMACHINE
    brew install azcopy
    azcopy copy ~/Parallels/vcpkg-osx-2025-08-12-amd64.pvmp "https://vcpkgimageminting.blob.core.windows.net/pvms?<SAS>"
    azcopy copy ~/Parallels/vcpkg-osx-2025-08-12-amd64.sha256.txt "https://vcpkgimageminting.blob.core.windows.net/pvms?<SAS>"
    exit
    ```
- [ ] Go to https://dev.azure.com/vcpkg/public/_settings/agentqueues and create a new self hosted Agent pool named `PrOsx-YYYY-MM-DD` based on the current date. Grant microsoft.vcpkg.ci and microsoft.vcpkg.pr access.
- [ ] Remove the macOS installer from Applications
- [ ] Follow the "Deploying images" steps below for each machine in the fleet.

### Instructions (ARM64)

- [ ] Go to https://dev.azure.com/vcpkg/public/_settings/agentqueues , pick the current osx queue,
      and delete one of the agents that are idle.
- [ ] Go to that machine in the KVM. (Passwords are stored as secrets in the CPP_GITHUB\vcpkg\vcpkgmm-passwords key vault)
- [ ] Update the macos host
- [ ] (Once only) install `macosvm` to `~` (this tarball is also backed up in our `vcpkg-image-minting` storage account). For example from a dev workstation:
    ```sh
    ssh vcpkg@HOSTMACHINE
    curl -L -o macosvm-0.2-1-arm64-darwin21.tar.gz https://github.com/s-u/macosvm/releases/download/0.2-1/macosvm-0.2-1-arm64-darwin21.tar.gz
    tar xvf macosvm-0.2-1-arm64-darwin21.tar.gz
    rm macosvm-0.2-1-arm64-darwin21.tar.gz
    exit
    ```
- [ ] Download the matching `.ipsw` for the macOS copy to install. See https://mrmacintosh.com/apple-silicon-m1-full-macos-restore-ipsw-firmware-files-database/ ; links there to find the .ipsw. Example: https://updates.cdn-apple.com/2025SummerFCS/fullrestores/082-08674/51294E4D-A273-44BE-A280-A69FC347FB87/UniversalMac_15.6_24G84_Restore.ipsw
- [ ] Determine the VM name using the form "vcpkg-osx-<date>-arm64", for example "vcpkg-osx-2025-08-12-arm64".
- [ ] Open a terminal and run the following commands to create the VM with vcpkg-osx-2025-08-12-arm64 and UniversalMac_15.6_24G84_Restore.ipsw replaced as appropriate. This must be run in the KVM as it uses a GUI:
    ```sh
    mkdir -p ~/Parallels/vcpkg-osx-2025-08-12-arm64
    cd ~/Parallels/vcpkg-osx-2025-08-12-arm64
    ~/macosvm --disk disk.img,size=500g --aux aux.img -c 8 -r 12g --restore ~/UniversalMac_15.6_24G84_Restore.ipsw ./vm.json
    ~/macosvm -g ./vm.json
    ```
- [ ] Follow prompts as you would on real hardware.
    * Set up as new.
    * Account name: vcpkg
    * A very similar password
    * Do not allow computer account password to be reset with your Apple Account.
    * Apple ID: 'Set Up Later' / Skip
    * No location services
    * Yes send crash reports
    * Set up screen time later
    * Only download updates automatically
- [ ] Set the desktop wallpaper to a fixed color from Settings -> Wallpaper . (This makes the KVM a lot easier to use :) )
- [ ] Disable automatic updates in the VM: Settings -> General -> Automatic Updates -> Disable them all
- [ ] Enable remote login in the VM: Settings -> General -> Sharing -> Remote Login
- [ ] Set the vcpkg user to be able to use sudo without a password. For example from a dev workstation:
    ```sh
    ssh vcpkg@HOSTMACHINE
    rm ~/.ssh/known_hosts
    ssh vcpkg@vcpkgs-Virtual-Machine.local
    printf 'vcpkg\tALL=(ALL)\tNOPASSWD:\tALL\n' | sudo tee -a '/etc/sudoers.d/vcpkg'
    sudo chmod 0440 '/etc/sudoers.d/vcpkg'
    exit
    ```
- [ ] Update the Azure Agent URI in setup-box.sh to the current version. You can find this by going to the agent pool, selecting "New agent", picking macOS, and copying the link. For example https://download.agent.dev.azure.com/agent/4.259.0/vsts-agent-osx-arm64-4.259.0.tar.gz
- [ ] Copy setup-box.sh and the xcode installer renamed to 'clt.dmg' to the host. For example from a dev workstation:
    ```sh
    scp ./setup-guest.sh vcpkg@HOSTMACHINE:/Users/vcpkg
    scp ./setup-box.sh vcpkg@HOSTMACHINE:/Users/vcpkg
    scp path/to/console/tools.dmg vcpkg@HOSTMACHINE:/Users/vcpkg/clt.dmg
    ssh vcpkg@HOSTMACHINE
    chmod +x setup-guest.sh
    ./setup-guest.sh
    rm setup-guest.sh
    rm setup-box.sh
    rm clt.dmg
    exit
    ```
- [ ] Shut down the VM cleanly.
- [ ] Mint a SAS token to vcpkgimageminting/pvms with read, add, create, write, and list permissions.
- [ ] Package the VM into a tarball. For example from a dev workstation:
    ```sh
    ssh vcpkg@HOSTMACHINE
    cd ~/Parallels
    aa archive -d vcpkg-osx-<date>-arm64 -o vcpkg-osx-<date>-arm64.aar -enable-holes
    brew install azcopy
    azcopy copy vcpkg-osx-<date>-arm64.aar "https://vcpkgimageminting.blob.core.windows.net/pvms?<SAS>"
    exit
    ```
- [ ] Go to https://dev.azure.com/vcpkg/public/_settings/agentqueues and create a new self hosted Agent pool named `PrOsx-YYYY-MM-DD-arm64` based on the current date. Grant microsoft.vcpkg.ci and microsoft.vcpkg.pr access.
- [ ] Follow the "Deploying images" steps below for each machine in the fleet.

## Deploying images

### Running the VM (AMD64)

Run these steps on each machine to add to the fleet. Skip steps that were done implicitly above if this machine was used to build a box.

- [ ] If this machine was used before, delete it from the pool of which it is a member from https://dev.azure.com/vcpkg/public/_settings/agentqueues
- [ ] Log in to the machine using the KVM.
- [ ] Check for software updates in macOS system settings
- [ ] Check for software updates in Parallels' UI
- [ ] Mint a SAS token URI to the box to use from the Azure portal if you don't already have one, and download the VM. (Recommend running this via SSH from domain joined machine due to containing SAS tokens). From a developer machine:
    ```sh
    ssh vcpkg@HOSTMACHINE
    brew install azcopy
    cd ~/Parallels
    azcopy copy "https://vcpkgimageminting.blob.core.windows.net/pvms/vcpkg-osx-<DATE>-amd64.pvmp?<SAS>" .
    azcopy copy "https://vcpkgimageminting.blob.core.windows.net/pvms/vcpkg-osx-<DATE>-amd64.sha256.txt?<SAS>" .
    exit
    ```
- [ ] Open the .pvmp in Parallels, and unpack it.
- [ ] Open the 'Configure' screen for the VM, and under Options -> Startup and Shutdown, set the following:
    * Custom
    * Start Automatically: When Mac Starts
    * Startup View: Headless
    * On VM Shutdown: Close Window (this one should already be set)
    * On Mac Shutdown: Shut Down
    * On Window Close: Keep Running in the Background
- [ ] Under 'More Options':
    * Time: Do not sync
    * Uncheck 'Update Parallels Tools automatically'
- [ ] Close and restart Parallels Desktop. The VM should start automatically. If it does not, start it.
- [ ] [grab a PAT][] if you don't already have one
- [ ] Copy the guest deploy script to the host, and run it with a first parameter of your PAT. From a developer machine:
    ```sh
    ./fire-register-guest.ps1 -Target HOSTMACHINE -Pat YourPatGoesHere
    ```
- [ ] In the VM, open a terminal on the host and run:
    ```
    ssh -i ~/Parallels/*/id_guest vcpkg@`prlctl list --full | sed -nr 's/^.*running *([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}).*/\1/p'`
    ~/myagent/run.sh
    ```
- [ ] Check that the machine shows up in the pool.
- [ ] Lock the screen on the host.
- [ ] Update the "vcpkg Macs" spreadsheet line for the machine with the new pool.

[grab a PAT]: #getting-an-azure-pipelines-pat

### Running the VM (ARM64)

Run these steps on each machine to add to the fleet. Skip steps that were done implicitly above if this machine was used to build a box.

- [ ] If this machine was used before, delete it from the pool of which it is a member from https://dev.azure.com/vcpkg/public/_settings/agentqueues
- [ ] Log in to the machine using the KVM.
- [ ] Check for software updates in macOS system settings
- [ ] (Once only) install `macosvm` to `~` (this tarball is also backed up in our `vcpkg-image-minting` storage account). From a developer machine:
    ```sh
    ssh vcpkg@HOSTMACHINE
    curl -L -o macosvm-0.2-1-arm64-darwin21.tar.gz https://github.com/s-u/macosvm/releases/download/0.2-1/macosvm-0.2-1-arm64-darwin21.tar.gz
    tar xvf macosvm-0.2-1-arm64-darwin21.tar.gz
    rm macosvm-0.2-1-arm64-darwin21.tar.gz
    exit
    ```
- [ ] Skip if this is the image building machine. Mint a SAS token URI to the box to use from the Azure portal if you don't already have one, and download the VM. (Recommend running this via SSH from domain joined machine due to containing SAS tokens). From a developer machine:
    ```sh
    ssh vcpkg@HOSTMACHINE
    brew install azcopy
    mkdir -p ~/Parallels
    cd ~/Parallels
    azcopy copy "https://vcpkgimageminting.blob.core.windows.net/pvms/vcpkg-osx-<DATE>-arm64.aar?<SAS>" vcpkg-osx-<DATE>-arm64.aar
    aa extract -d vcpkg-osx-<DATE>-arm64 -i ./vcpkg-osx-<DATE>-arm64.aar -enable-holes
    exit
    ```
- [ ] Open a separate terminal window on the host and start the VM by running:
    ```sh
    cd ~/Parallels/vcpkg-osx-<DATE>-arm64
    ~/macosvm ./vm.json
    ```
- [ ] [grab a PAT][] if you don't already have one
- [ ] Copy the guest deploy script to the host, and run it with a first parameter of your PAT. From a developer machine:
    ```sh
    ./fire-register-guest.ps1 -Target HOSTMACHINE -Pat YourPatGoesHere
    ```
- [ ] That will cleanly shut down the VM. In the KVM's terminal, relaunch the VM in ephemeral mode with:
    ```sh
    ~/macosvm --ephemeral ./vm.json
    ```
- [ ] Open a terminal window on the host and run the agent
    ```sh
    ssh -i ~/Parallels/*/id_guest vcpkg@vcpkgs-Virtual-Machine.local
    ~/myagent/run.sh
    ```
- [ ] Check that the machine shows up in the pool, and lock the vcpkg user on the host.
- [ ] Lock the screen on the host.
- [ ] Update the "vcpkg Macs" spreadsheet line for the machine with the new pool.

[grab a PAT]: #getting-an-azure-pipelines-pat

## Getting an Azure Pipelines PAT

Personal Access Tokens are an important part of this process,
and they are fairly easy to generate.
On ADO, under the correct project (in vcpkg's case, "vcpkg"),
click on the "User Settings" icon, then go to "Personal access tokens".
It is the icon to the left of your user icon, in the top right corner.

Then, create a new token, give it a name, make sure it expires quickly,
and give it a custom defined scope that includes the
"Agent pools: Read & manage" permission (you'll need to "Show all scopes"
to access this).
You can now copy this token and use it to allow machines to join.
