The Portworx command-line tool,
pxctl, is available on every node where PX is running. It is available at the host at
/opt/pwx/bin/pxctl. The CLI is designed to accept and display human readable input and output by default. In addition, every command takes in a
-j option such that the output is in machine parsable
In most production deployments, you will provision volumes directly using Docker or your scheduler (such as a Kubernetes pod spec). However, pxctl also lets you directly provision and manage storage. In addition, the pxctl has a rich set of cluster wide management features which are explained in this document.
All operations from
pxctl are reflected back into the containers that use Portworx storage. In addition to what is exposed in Docker volumes,
- Gives access to Portworx storage-specific features, such as cloning a running container’s storage.
- Shows the connection between containers and their storage volumes.
- Let you control the Portworx storage cluster, such as adding nodes to the cluster. (The Portworx tools refer to servers managed by Portworx storage as nodes.)
The scope of the
pxctl command is global to the cluster. Running
pxctl from any node within the cluster therefore shows the same global details.
pxctl also identifies details specific to that node.
This current release of
pxctl requires that you run as a privileged user. The
pxctl tool is available in the
/opt/pwx/bin/ directory. To run
pxctl without typing the full directory path each time, add
pxctl to your PATH as follows:
# sudo su # export PATH=/opt/pwx/bin:$PATH
pxctl provides capabilities to perform much more fine-grained control of the PX resources cluster-wide and as seen above offers capabilties to manage volumes, snapshots, cluster resources, hosts in the cluster and software upgrade in the cluster.
Now you can just type
pxctl and you’re ready to start.
# sudo /opt/pwx/bin/pxctl -v pxctl version 2.2.0-555ffff
To view all the commands offered by pxctl, type ‘pxctl help’
# sudo /opt/pwx/bin/pxctl help NAME: pxctl - px cli USAGE: pxctl [global options] command [command options] [arguments...] VERSION: 1.2.0-75d0dbb COMMANDS: status Show status summary volume, v Manage volumes snap, s Manage volume snapshots cluster, c Manage the cluster service, sv Service mode utilities host Attach volumes to the host secrets Manage Secrets upgrade Upgrade PX eula Show license agreement cloudsnap, cs Backup and restore snapshots to/from cloud objectstore Manage the object store help, h Shows a list of commands or help for one command GLOBAL OPTIONS: --json, -j output in json --color output with color coding --raw, -r raw CLI output for instrumentation --help, -h show help --version, -v print the version
The status command gives summary like node details, cluster members, global storage capacity etc.
# sudo /opt/pwx/bin/pxctl status
The following sample output of
pxctl status shows that the global capacity for Docker containers is 128 GB.
# /opt/pwx/bin/pxctl status Status: PX is operational Node ID: 0a0f1f22-374c-4082-8040-5528686b42be IP: 172.31.50.10 Local Storage Pool: 2 pools POOL IO_PRIORITY SIZE USED STATUS ZONE REGION 0 LOW 64 GiB 1.1 GiB Online b us-east-1 1 LOW 128 GiB 1.1 GiB Online b us-east-1 Local Storage Devices: 2 devices Device Path Media Type Size Last-Scan 0:1 /dev/xvdf STORAGE_MEDIUM_SSD 64 GiB 10 Dec 16 20:07 UTC 1:1 /dev/xvdi STORAGE_MEDIUM_SSD 128 GiB 10 Dec 16 20:07 UTC total - 192 GiB Cluster Summary Cluster ID: 55f8a8c6-3883-4797-8c34-0cfe783d9890 IP ID Used Capacity Status 172.31.50.10 0a0f1f22-374c-4082-8040-5528686b42be 2.2 GiB 192 GiB Online (This node) Global Storage Pool Total Used : 2.2 GiB Total Capacity : 192 GiB
Upgrade related operations
sudo /opt/pwx/bin/pxctl upgrade --help NAME: pxctl upgrade - Upgrade PX USAGE: pxctl upgrade [command options] [arguments...] OPTIONS: --tag value, -l value Specify a PX Docker image tag (default: "latest")
pxctl upgrade upgrades the PX version on a node. Note: the container name also needs to be specified in the CLI.
sudo /opt/pwx/bin/pxctl upgrade --tag 1.1.6 my-px-enterprise Upgrading my-px-enterprise to version: portworx/px-enterprise:1.1.6 Downloading PX portworx/px-enterprise:1.1.6 layers... <Output truncated>
It is recommended to upgrade the nodes in a staggered manner so as to maintain quorum and continuity of IOs.
You must make PX login to the secrets endpoint when using encrypted volumes and ACLs.
pxctl secrets can be used to configure authentication credentials and endpoints - Vault, Amazon KMS, KVDB are currently supported. Vault example (Note: To install and configure Vault, peruse this link)
# sudo /opt/pwx/bin/pxctl secrets vault login Enter VAULT_ADDRESS: http://myvault.myorg.com Enter VAULT_TOKEN: *** Successfully authenticated with Vault.
AWS KMS example
# sudo /opt/pwx/bin/pxctl secrets aws login Enter AWS_ACCESS_KEY_ID [Hit Enter to ignore]: *** Enter AWS_SECRET_ACCESS_KEY [Hit Enter to ignore]: *** Enter AWS_SECRET_TOKEN_KEY [Hit Enter to ignore]: *** Enter AWS_CMK [Hit Enter to ignore]: mykey Enter AWS_REGION [Hit Enter to ignore]: us-east-1b Successfully authenticated with AWS.