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variable for all CCM-managed\nCassandra nodes (and related tools) to an available Java 8 installation, which is required to run Cassandra 3.11 and lower.\n\nPlatforms Currently Supported:\n* macOS\n* Linux\n    * Arch\n    * Debian-based\n    * RHEL-based\n\n## Usage\n\n_ccm-java8_ is available on [PyPI](https://pypi.org/project/ccm-java8/).\n\n1. 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Run CCM commands as normal.\n\n    Cassandra and various tools will launch using the Java 8 VM.\n    \n    If no Java 8 VM can be found, CCM will refuse to start.\n    Install Java 8 if this occurs.\n\n\n## Motivation\n\nMany operating systems support the side-by-side installation of multiple Java versions, yet only one version can be selected as the default\n(i.e., what version of `java` is on `$PATH`).\n\nCassandra's `bin/cassandra` launch script prefers the `java` binary under `$JAVA_HOME`, and will fallback to using the `java` binary on `$PATH` if `$JAVA_HOME` isn't set.\nHence, unless `$JAVA_HOME` or the platform default is explicitly set to a Java 8 installation, Cassandra will try, and fail, to start under an incompatible Java version.\n\n_ccm-java8_ works by registering a CCM extension that when loaded by CCM explicitly sets the `JAVA_HOME` environment variable to a directory containing a Java 8 installation, or throws an exception otherwise.\n\nOlder versions used to register a hook into the `append_to_server_env` function, but this function doesn't get called for tools (`nodetool`, `sstabledump`, etc.).\nThe current version sets the `JAVA_HOME` environment variable globally in the CCM Python process, which gets inherited by all sub-processes launched by CCM.","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Finstaclustr%2Fccm-java8","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Finstaclustr%2Fccm-java8","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Finstaclustr%2Fccm-java8/lists"}