Pywbemtools is a collection of command line tools that communicate with WBEM servers. The tools are written in pure Python and support Python 2 and Python 3.
At this point, pywbemtools includes a single command line tool named
pywbemcli
that uses the pywbem package on Pypi to issue operations to a
WBEM server using the CIM/WBEM standards defined by the DMTF to perform
system management tasks.
CIM/WBEM standards are used for a wide variety of systems management tasks in the industry including DMTF management standards and the SNIA Storage Management Initiative Specification (SMI-S).
Pywbemcli provides access to WBEM servers from the command line. It provides functionality to:
- Explore the CIM data of WBEM servers. It can manage/inspect the CIM model components including CIM classes, CIM instances, and CIM qualifiers and execute CIM methods and queries on the WBEM server.
- Execute specific CIM-XML operations on the WBEM server as defined in DMTF standard DSP0200 (CIM Operations over HTTP).
- Inspect and manage WBEM server functionality including:
- CIM namespaces
- Advertised WBEM management profiles
- WBEM server brand and version information
- Capture detailed information on CIM-XML interactions with the WBEM server including time statistics and details of data flow.
- Maintain a file with persisted WBEM connection definitions so that pywbemcli can access multiple WBEM servers by name.
- Provide both a command line mode and an interactive mode where multiple pywbemcli commands can be executed within the context of a WBEM server.
- Use an integrated mock WBEM server to try out commands. The mock server can be loaded with CIM objects defined in MOF files or via Python scripts.
Requirements:
- Python 2.7, 3.4 and higher
- Operating Systems: Linux, OS-X, native Windows, UNIX-like environments on Windows (e.g. Cygwin)
- On Python 2, the following OS-level packages are needed:
- On native Windows:
choco
- Chocolatey package manager. The pywbemtools package installation uses Chocolatey to install OS-level software. See https://chocolatey.org/ for the installation instructions for Chocolatey.wget
- Download tool. Can be installed with:choco install wget
.
- On Linux, OS-X, UNIX-like environments on Windows (e.g. Cygwin):
wget
- Download tool. Can be installed using the OS-level package manager for the platform.
- On native Windows:
Installation:
On Python 2, install OS-level packages needed by the pywbem package:
On native Windows:
> wget -q https://raw.githubusercontent.com/pywbem/pywbem/master/pywbem_os_setup.bat > pywbem_os_setup.bat
On Linux, OS-X, UNIX-like environments on Windows (e.g. Cygwin):
$ wget -q https://raw.githubusercontent.com/pywbem/pywbem/master/pywbem_os_setup.sh $ chmod 755 pywbem_os_setup.sh $ ./pywbem_os_setup.sh
The
pywbem_os_setup.sh
script uses sudo internally, so your userid needs to have sudo permission.
Install the pywbemtools Python package:
$ pip install pywbemtools
For more details, including how to install the needed OS-level packages manually, see Installation.
For the latest version of pywbemtools released on Pypi:
All commands within pywbemcli show help with the -help
or -h
options:
$ pywbemcli --help
. . .
$ pywbemcli connection --help
. . .
$ pywbemcli connection save --help
. . .
The following examples build on each other and show a typical sequence of exploration of a WBEM server. For simplicity, they all operate against the default namespace of the server, and use a persistent connection definition for the server:
Add a persistent connection definition named
conn1
for the WBEM server to be used, so that the subsequent commands can refer to it:$ pywbemcli -s https://localhost --no-verify -u user -p password connection save conn1
pywbemcli also supports mocked WBEM servers in memory, that are preloaded with CIM objects defined in MOF files. Add a persistent connection definition named
assoc1
to a mock server using one of the MOF files provided in the repo:$ pywbemcli -m tests/unit/simple_assoc_mock_model.mof connection save assoc1
List the persistent connection definitions:
$ pywbemcli connection list WBEM server connections(brief): (#: default, *: current) name server mock-server ------ ----------------- -------------------------------------- assoc1 tests/unit/simple_assoc_mock_model.mof conn1 https://localhost
List the persistent connection definitions with full information:
$ pywbemcli connection list --full WBEM server connections(full): (#: default, *: current) name server namespace user timeout use_pull verify certfile keyfile mock-server ------ ----------------- ----------- ------ --------- ---------- -------- ---------- --------- -------------------------------------- assoc1 root/cimv2 30 True tests/unit/simple_assoc_mock_model.mof conn1 https://localhost root/cimv2 user 30 True False
Show the class tree, using the previously added connection definition
assoc1
:$ pywbemcli -n assoc1 class tree root +-- TST_FamilyCollection +-- TST_Lineage +-- TST_MemberOfFamilyCollection +-- TST_Person +-- TST_Personsub
Retrieve a single class from that class tree:
$ pywbemcli -n assoc1 class get TST_Person class TST_Person { [Key ( true ), Description ( "This is key prop" )] string name; string extraProperty = "defaultvalue"; };
Enumerate the instances of that class, returning only their instance names by use of the
--no
option:$ pywbemcli -n assoc1 instance enumerate TST_Person --no root/cimv2:TST_Person.name="Gabi" root/cimv2:TST_Person.name="Mike" root/cimv2:TST_Person.name="Saara" root/cimv2:TST_Person.name="Sofi" root/cimv2:TST_PersonSub.name="Gabisub" root/cimv2:TST_PersonSub.name="Mikesub" root/cimv2:TST_PersonSub.name="Saarasub" root/cimv2:TST_PersonSub.name="Sofisub"
Retrieve a single instance using one of these instance names:
$ pywbemcli -n assoc1 instance get 'root/cimv2:TST_Person.name="Sofi"' instance of TST_Person { name = "Sofi"; };
The instance to be retrieved can also be selected interactively by use of the wildcard instance key ("CLASSNAME.?"):
$ pywbemcli -n assoc1 instance get TST_Person.? Pick Instance name to process 0: root/cimv2:TST_Person.name="Saara" 1: root/cimv2:TST_Person.name="Mike" 2: root/cimv2:TST_Person.name="Sofi" 3: root/cimv2:TST_Person.name="Gabi" 4: root/cimv2:TST_PersonSub.name="Gabisub" 5: root/cimv2:TST_PersonSub.name="Sofisub" 6: root/cimv2:TST_PersonSub.name="Mikesub" 7: root/cimv2:TST_PersonSub.name="Saarasub" Input integer between 0 and 7 or Ctrl-C to exit selection: 3 instance of TST_Person { name = "Gabi"; };
There are multiple output formats supported. The enumerated instances can for example be formatted as a table of properties by use of the
-o table
general option (these instances have only one property 'name'):$ pywbemcli -n assoc1 -o table instance enumerate TST_Person Instances: TST_Person +------------+ | name | |------------| | "Gabi" | | "Mike" | | "Saara" | | "Sofi" | | "Gabisub" | | "Mikesub" | | "Saarasub" | | "Sofisub" | +------------+
Traverse all associations starting from a specific instance that is selected interactively:
$ pywbemcli -n assoc1 -o table instance associators TST_Person.? Pick Instance name to process 0: root/cimv2:TST_Person.name="Saara" 1: root/cimv2:TST_Person.name="Mike" 2: root/cimv2:TST_Person.name="Sofi" 3: root/cimv2:TST_Person.name="Gabi" 4: root/cimv2:TST_PersonSub.name="Gabisub" 5: root/cimv2:TST_PersonSub.name="Sofisub" 6: root/cimv2:TST_PersonSub.name="Mikesub" 7: root/cimv2:TST_PersonSub.name="Saarasub" Input integer between 0 and 7 or Ctrl-C to exit selection: 1 Instances: TST_FamilyCollection +-----------+ | name | |-----------| | "Family2" | | "Gabi" | | "Sofi" | +-----------+
Other operations against WBEM servers include getting information on namespaces, the Interop namespace, WBEM server brand information, or the advertised management profiles:
Show the Interop namespace of the server:
$ pywbemcli -n conn1 server interop Server Interop Namespace: Namespace Name ---------------- root/PG_InterOp
List the advertised management profiles:
$ pywbemcli -n conn1 server profiles --organization DMTF Advertised management profiles: +----------------+----------------------+-----------+ | Organization | Registered Name | Version | |----------------+----------------------+-----------| | DMTF | CPU | 1.0.0 | | DMTF | Computer System | 1.0.0 | | DMTF | Ethernet Port | 1.0.0 | | DMTF | Fan | 1.0.0 | | DMTF | Indications | 1.1.0 | | DMTF | Profile Registration | 1.0.0 | +----------------+----------------------+-----------+
Pywbemcli can also be executed in the interactive (REPL) mode by executing it
without entering a command or by using the command repl
. In this mode
the command line prompt is pywbemcli>
, the WBEM server connection is
maintained between commands and the general options apply to all commands
executed:
$ pywbemcli -n conn1
Enter 'help' for help, <CTRL-D> or ':q' to exit pywbemcli.
pywbemcli> server brand
Server Brand:
WBEM Server Brand
-------------------
OpenPegasus
pywbemcli> server interop
Server Interop Namespace:
Namespace Name
----------------
root/PG_InterOp
pywbemcli> :q
For each upcoming release, the bugs and feature requests that are planned to be addressed in that release are listed in the pywbemtools issue tracker with an according milestone set that identifies the target release. The due date on the milestone definition is the planned release date. There is usually also an issue that sets out the major goals for an upcoming release.
For information on how to contribute to this project, see Contributing.
The pywbemtools package is licensed under the Apache 2.0 License.