The information in this doc is based on Juju version 3.5.5, and may not accurately reflect other versions of Juju.
See also: import-filesystem, storage, storage-pools
Summary
Adds storage to a unit after it has been deployed.
Usage
juju add-storage [options] <unit> <storage-directive>
Options
| Flag | Default | Usage |
|---|---|---|
-B, --no-browser-login |
false | Do not use web browser for authentication |
-m, --model |
Model to operate in. Accepts [<controller name>:]<model name>|<model UUID> |
Examples
Add a 100MiB tmpfs storage instance for “pgdata” storage to unit postgresql/0:
juju add-storage postgresql/0 pgdata=tmpfs,100M
Add 10 1TiB storage instances to “osd-devices” storage to unit ceph-osd/0 from the model’s default storage pool:
juju add-storage ceph-osd/0 osd-devices=1T,10
Add a storage instance from the (AWS-specific) ebs-ssd storage pool for “brick” storage to unit gluster/0:
juju add-storage gluster/0 brick=ebs-ssd
Further reading:
Details
Add storage to a pre-existing unit within a model. Storage is allocated from a storage pool, using parameters provided within a “storage directive”. (Use ‘juju deploy --storage=<storage-directive>’ to provision storage during the deployment process).
juju add-storage <unit> <storage-directive>
<unit> is the ID of a unit that is already in the model.
<storage-directive> describes to the charm how to refer to the storage, and where to provision it from. <storage-directive> takes the following form:
<storage-name>[=<storage-constraint>]
<storage-name> is defined in the charm’s metadata.yaml file.
<storage-constraint> is a description of how Juju should provision storage instances for the unit. They are made up of up to three parts: <storage-pool>, <count>, and <size>. They can be provided in any order, but we recommend the following:
<storage-pool>,<count>,<size>
Each parameter is optional, so long as at least one is present. So the following storage constraints are also valid:
<storage-pool>,<size> <count>,<size> <size>
<storage-pool> is the storage pool to provision storage instances from. Must be a name from ‘juju storage-pools’. The default pool is available via executing ‘juju model-config storage-default-block-source’.
<count> is the number of storage instances to provision from <storage-pool> of <size>. Must be a positive integer. The default count is “1”. May be restricted by the charm, which can specify a maximum number of storage instances per unit.
<size> is the number of bytes to provision per storage instance. Must be a positive number, followed by a size suffix. Valid suffixes include M, G, T, and P. Defaults to “1024M”, or the which can specify a minimum size required by the charm.