================ Deploying Presto

This page presents common problems encountered when deploying Presto.

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Permission denied for launcher.pid

.. rubric:: Problem

Running bin/launcher run or bin/launcher start returns the following error:

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Permission denied: '/private/var/presto/data/var/run/launcher.pid'

.. rubric:: Solution

Run the command as root or using sudo:

.. code-block:: shell

sudo bin/launcher run sudo bin/launcher start

Xcode failed to locate Python

.. rubric:: Problem

.. note::

macOS only

Running bin/launcher run or bin/launcher start returns the following error:

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xcode select failed to locate python requesting installation of command

.. rubric:: Solution

Create a symlink where XCode looks for python that links to python3. An example of such a command:

.. code-block:: shell

ln -s /Library/Developer/CommandLineTools/usr/bin/python3 /Library/Developer/CommandLineTools/usr/bin/python

JVM option 'UseG1GC' is experimental

.. rubric:: Problem

Running bin/launcher run or bin/launcher start returns the following error:

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Error: VM option 'UseG1GC' is experimental and must be enabled via -XX:+UnlockExperimentalVM Options.

Error: Could not create the Java Virtual Machine.

Error: A fatal exception has occurred. Program will exit.

.. rubric:: Solution

This error occurs with some versions of Java.

Ensure installed Java version meets the Requirements <https://github.com/prestodb/presto?tab=readme-ov-file#requirements>_.