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

This page presents common problems encountered when deploying Presto.

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

Problem ^^^^^^^

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

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

Solution ^^^^^^^^

Run the command as root or using sudo.

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sudo bin/launcher run
sudo bin/launcher start

xcode select failed to locate python

Problem ^^^^^^^

(OS X only) bin/launcher run or bin/launcher start returns the following error:

xcode select failed to locate python requesting installation of command

Solution ^^^^^^^^

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

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

Error: VM option ‘UseG1GC’ is experimental

Problem ^^^^^^^ 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.

Solution ^^^^^^^^

This error occurs with some versions of Java.

1. Check the version of Java that is installed on the system.

2. If the installed version of Java is not the version in Requirements <https://github.com/prestodb/presto?tab=readme-ov-file#requirements>_, then uninstall Java and install a recommended version.