Tashi: Your Faithful Cluster Manager
Apache Tashi

The primitive scheduler

The primitive scheduler examines the table of VMs for machines in the Pending state (requested, but not yet created), and based on the current available resources, will deploy the VM onto a machine it identified.

Criteria for placing the VM include packing policy, host availability etc.

The following hints are useful with the primitive scheduler:

  • densePack
  • This option sets a preference for matching VMs to hosts. If set to True, the scheduler will prefer placing a VM on a host with the minimum available resources. If set to False, the scheduler will prefer placement on a fully open host instead. Default policy is given via the scheduler configuration.


Apache Tashi is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator PMC. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.