5ea431a792
Follow up to memory oversubscription - expose an env-var to indicate when memory oversubscription is enabled and what the limit is. This will be helpful for setting hints to app for memory management. Co-authored-by: Seth Hoenig <shoenig@hashicorp.com>
334 lines
8.4 KiB
Plaintext
334 lines
8.4 KiB
Plaintext
<table>
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<thead>
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<tr>
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<th>Variable</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<code>NOMAD_ALLOC_DIR</code>
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</td>
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<td>
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The path to the shared <code>alloc/</code> directory. See
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<a href="/docs/runtime/environment#task-directories">
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here for more
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</a> information.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_TASK_DIR</code>
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</td>
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<td>
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The path to the task <code>local/</code> directory. See
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<a href="/docs/runtime/environment#task-directories">here</a> for more information.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_SECRETS_DIR</code>
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</td>
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<td>
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Path to the task's secrets directory. See
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<a href="/docs/runtime/environment#task-directories">here</a> for more information.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_MEMORY_LIMIT</code>
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</td>
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<td>Memory limit in MB for the task</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_MEMORY_MAX_LIMIT</code>
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</td>
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<td>
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The maximum memory limit the task may use if client has excess memory
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capacity, in MB. Omitted if task isn't configured with memory oversubscription.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_CPU_LIMIT</code>
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</td>
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<td>CPU limit in MHz for the task</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_ALLOC_ID</code>
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</td>
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<td>Allocation ID of the task</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_ALLOC_NAME</code>
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</td>
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<td>Allocation name of the task</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_ALLOC_INDEX</code>
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</td>
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<td>
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Allocation index; useful to distinguish instances of task groups. From 0
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to (count - 1). The index is unique within a given version of a job, but
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canaries or failed tasks in a deployment may reuse the index.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_TASK_NAME</code>
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</td>
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<td>Task's name</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_GROUP_NAME</code>
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</td>
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<td>Group's name</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_JOB_ID</code>
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</td>
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<td>
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Job's ID, which is equal to the Job name when submitted through
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CLI but can be different when using the API
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_JOB_NAME</code>
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</td>
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<td>Job's name</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_JOB_PARENT_ID</code>
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</td>
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<td>ID of the Job's parent if it has one</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_DC</code>
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</td>
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<td>Datacenter in which the allocation is running</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_NAMESPACE</code>
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</td>
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<td>Namespace in which the allocation is running</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_REGION</code>
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</td>
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<td>Region in which the allocation is running</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_META_<key></code>
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</td>
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<td>
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The metadata value given by <code>key</code> on the task's
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metadata. Note that this is different from
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<a href="/docs/runtime/interpolation#node-variables-">
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<code>${meta.<key>}</code>
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</a>
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which are keys in the node's metadata.
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</td>
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</tr>
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<tr>
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<td>
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<code>VAULT_TOKEN</code>
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</td>
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<td>
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The task's Vault token. See
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<a href="/docs/vault-integration">Vault Integration</a>
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for more details
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</td>
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</tr>
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<tr>
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<th colspan="2">Network-related Variables</th>
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</tr>
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<tr>
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<td>
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<code>NOMAD_IP_<label></code>
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</td>
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<td>
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Host IP for the given port <code>label</code>. See
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<a href="/docs/job-specification/network">here for more</a> information.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_PORT_<label></code>
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</td>
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<td>
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Port for the given port <code>label</code>. Driver-specified port when a
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port map is used, otherwise the host's static or dynamic port
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allocation. Services should bind to this port. See
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<a href="/docs/job-specification/network">here for more</a> information.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_ADDR_<label></code>
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</td>
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<td>
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Host <code>IP:Port</code> pair for the given port <code>label</code>.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_HOST_PORT_<label></code>
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</td>
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<td>
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Port on the host for the port <code>label</code>. See
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<a href="/docs/job-specification/network#mapped-ports">here</a> for more
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information.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_IP_<task>_<label></code>
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</td>
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<td>
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Host IP for the given port <code>label</code> and <code>task</code> for
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tasks in the same task group.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_PORT_<task>_<label></code>
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</td>
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<td>
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Port for the given port <code>label</code> and <code>task</code> for
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tasks in the same task group. Driver-specified port when a port map is
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used, otherwise the host's static or dynamic port allocation.
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Services should bind to this port.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_ADDR_<task>_<label></code>
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</td>
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<td>
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Host <code>IP:Port</code> pair for the given port <code>label</code> and
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<code>task</code> for tasks in the same task group.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_HOST_PORT_<task>_<label></code>
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</td>
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<td>
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Port on the host for the port <code>label</code> and <code>task</code>
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for tasks in the same task group.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_UPSTREAM_IP_<service></code>
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</td>
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<td>
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IP for the given <code>service</code> when defined as a Consul Connect
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<a href="/docs/job-specification/upstreams">upstream</a>.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_UPSTREAM_PORT_<service></code>
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</td>
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<td>
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Port for the given <code>service</code> when defined as a Consul Connect
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<a href="/docs/job-specification/upstreams">upstream</a>.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_UPSTREAM_ADDR_<service></code>
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</td>
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<td>
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Host <code>IP:Port</code> for the given <code>service</code> when
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defined as a Consul Connect
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<a href="/docs/job-specification/upstreams">upstream</a>.
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</td>
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</tr>
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<tr>
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<td>
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<code>NOMAD_ENVOY_ADMIN_ADDR_<service></code>
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</td>
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<td>
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Local address <code>localhost:Port</code> for the admin port of the
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envoy sidecar for the given <code>service</code> when defined as a
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Consul Connect enabled service.
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</td>
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</tr>
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<tr>
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<th colspan="2">Consul-related Variables (only set for connect native tasks)</th>
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</tr>
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<tr>
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<td>
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<code>CONSUL_HTTP_ADDR</code>
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</td>
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<td>
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Specifies the address to the local Consul agent, will be a unix domain
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socket in bridge mode and a tcp address in host networking.
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</td>
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</tr>
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<tr>
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<td>
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<code>CONSUL_HTTP_TOKEN</code>
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</td>
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<td>
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The token to authenticate against consul.
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</td>
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</tr>
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<tr>
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<td>
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<code>CONSUL_HTTP_SSL</code>
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</td>
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<td>
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Specifies whether HTTPS should be used when communicating with consul.
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</td>
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</tr>
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<tr>
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<td>
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<code>CONSUL_HTTP_SSL_VERIFY</code>
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</td>
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<td>
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Specifies whether the HTTPS connection should be verified.
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</td>
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</tr>
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<tr>
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<td>
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<code>CONSUL_CACERT</code>
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</td>
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<td>
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Specifies the path to the CA certificate used for Consul communication.
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</td>
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</tr>
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<tr>
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<td>
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<code>CONSUL_CLIENT_CERT</code>
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</td>
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<td>
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The client certificate to use when communicating with Consul.
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</td>
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</tr>
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<tr>
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<td>
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<code>CONSUL_CLIENT_KEY</code>
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</td>
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<td>
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The client key to use when communicating with Consul.
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</td>
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</tr>
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</tbody>
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</table>
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