README ¶
govc
govc
is a vSphere CLI built on top of govmomi
.
The CLI is designed to be a user friendly CLI alternative to the GUI and well suited for automation tasks.
It also acts as a test harness for the govmomi
APIs and provides working examples of how to use the APIs.
Installation
Docker
The official govc
Docker images are built from this Dockerfile.
Binaries
You can find prebuilt govc
binaries on the releases page.
You can download and install a binary locally like this:
# extract govc binary to /usr/local/bin
# note: the "tar" command must run with root permissions
curl -L -o - "https://github.com/vmware/govmomi/releases/latest/download/govc_$(uname -s)_$(uname -m).tar.gz" | tar -C /usr/local/bin -xvzf - govc
Source
Install via go install
To build govc
from source, first install the Go
toolchain. You can then install the latest govc
from
Github using:
go install github.com/vmware/govmomi/govc@latest
Note: To inject build variables (see details
below) used by govc version [-l]
, GOFLAGS
can be
defined and are honored by go get
.
⚠️ Make sure $GOPATH/bin
is in your PATH
to use the version installed from
source.
If you've made local modifications to the repository at
$GOPATH/src/github.com/vmware/govmomi
, you can install using:
go install github.com/vmware/govmomi/govc
Install via goreleaser
You can also build govc
following our release process using goreleaser
(requires Go toolchain). This will ensure that build
time variables are correctly injected. Build (linker) flags and injection are
defined in .goreleaser.yaml and automatically set as
GOFLAGS
when building with goreleaser
.
Install goreleaser
as per the installation
instructions, then:
git clone https://github.com/vmware/govmomi.git
cd govmomi
# pick a tag (>=v0.25.0)
RELEASE=v0.25.0
git checkout ${RELEASE}
# build for the host OS/ARCH, otherwise omit --single-target
# binaries are placed in respective subdirectories in ./dist/
goreleaser build --clean --single-target
Usage
For the complete list of commands and flags, refer to the USAGE document.
Common flags include:
-u
: ESXi or vCenter URL (ex:user:pass@host
)-debug
: Trace requests and responses (to~/.govmomi/debug
)
Managed entities can be referred to by their absolute path or by their relative
path. For example, when specifying a datastore to use for a subcommand, you can
either specify it as /mydatacenter/datastore/mydatastore
, or as
mydatastore
. If you're not sure about the name of the datastore, or even the
full path to the datastore, you can specify a pattern to match. Both
/*center/*/my*
(absolute) and my*store
(relative) will resolve to the same
datastore, given there are no other datastores that match those globs.
The relative path in this example can only be used if the command can
umambigously resolve a datacenter to use as origin for the query. If no
datacenter is specified, govc
defaults to the only datacenter, if there is
only one. The datacenter itself can be specified as a pattern as well, enabling
the following arguments: -dc='my*' -ds='*store'
. The datastore pattern is
looked up and matched relative to the datacenter which itself is specified as a
pattern.
Besides specifying managed entities as arguments, they can also be specified
using environment variables. The following environment variables are used by
govc
to set defaults:
-
GOVC_URL
: URL of ESXi or vCenter instance to connect to.The URL scheme defaults to
https
and the URL path defaults to/sdk
. This means that specifyinguser:pass@host
is equivalent tohttps://user:pass@host/sdk
.If username or password includes special characters like
\
,#
or:
you can useGOVC_USERNAME
andGOVC_PASSWORD
to have a simpleGOVC_URL
When using govc against VMware Workstation, GOVC_URL can be set to "localhost" without a user or pass, in which case local ticket based authentication is used.
-
GOVC_USERNAME
: USERNAME to use if not specified in GOVC_URL. -
GOVC_PASSWORD
: PASSWORD to use if not specified in GOVC_URL. -
GOVC_TLS_CA_CERTS
: Override system root certificate authorities.export GOVC_TLS_CA_CERTS=~/.govc_ca.crt # Use path separator to specify multiple files: export GOVC_TLS_CA_CERTS=~/ca-certificates/bar.crt:~/ca-certificates/foo.crt
-
GOVC_TLS_KNOWN_HOSTS
: File(s) for thumbprint based certificate verification.Thumbprint based verification can be used in addition to or as an alternative to
GOVC_TLS_CA_CERTS
for self-signed certificates. Example:export GOVC_TLS_KNOWN_HOSTS=~/.govc_known_hosts govc about.cert -u host -k -thumbprint | tee -a $GOVC_TLS_KNOWN_HOSTS govc about -u user:pass@host
-
GOVC_TLS_HANDSHAKE_TIMEOUT
: Limits the time spent performing the TLS handshake. -
GOVC_INSECURE
: Disable certificate verification.This option sets Go's
tls.Config.InsecureSkipVerify
flag and is false by default. Quoting https://golang.org/pkg/crypto/tls/#Config:InsecureSkipVerify
controls whether a client verifies the server's certificate chain and host name.If
InsecureSkipVerify
is true, TLS accepts any certificate presented by the server and any host name in that certificate.In this mode, TLS is susceptible to man-in-the-middle attacks. This should be used only for testing.
-
GOVC_DATACENTER
-
GOVC_DATASTORE
-
GOVC_NETWORK
-
GOVC_RESOURCE_POOL
-
GOVC_HOST
-
GOVC_GUEST_LOGIN
: Guest credentials for guest operations -
GOVC_VIM_NAMESPACE
: Vim namespace defaults tourn:vim25
-
GOVC_VIM_VERSION
: Vim version defaults to6.0
-
GOVC_VI_JSON
: Uses JSON transport instead of SOAP (Experimental; Usable only for vim25 APIs in vCenter 8.0u1)
Troubleshooting
Verbose Flag
The -verbose
flag writes request and response data to stderr, in a format more compact than the -trace
or -debug
flags.
The output includes the request method name with abbreviated input parameters. The response data is more detailed and may include
structures formatted as Go code, such as Task property updates. The value of some properties will the govc
object.collect
command that can be used to view the actual value.
Trace flag
The -trace
flag writes HTTP request and response data to stderr.
XML bodies are formatted using xmlstarlet
if installed and JSON bodies using jq
if installed.
Formatting can be disabled via export GOVC_DEBUG_FORMAT=false
.
If both -trace
and -verbose
flags are specified, request and response data is formatted as Go code.
Debug Flag
The-debug
flag traces vSphere API calls similar to the -trace
flag, but saves to files rather than stderr.
When the -debug
flag is specified, the default behavior is to put the output in ~/.govmomi/debug/<run timestamp>
.
In that directory will be four (4) files per API call.
1-0001.req.headers #headers from the request sent to the API
1-0001.req.xml #body content from request sent to the API
1-0001.res.headers #headers from the response from the API
1-0001.res.xml #body from the respnse from the API
In that filename the 0001
represents the an incremented call order and will increment for each time the SOAP client
makes an API call.
To configure the debug output you can use two environment variables.
GOVC_DEBUG_PATH
: defaults to ~/.govmomi/debugGOVC_DEBUG_PATH_RUN
: defaults to timestamp of the run
The debug-format script can be used to format the debug output similar to the -trace
flag.
Print Version Information
For troubleshooting and when filing issues, get build related details with:
$ govc version -l
Build Version: v0.25.0-next
Build Commit: e86da96e
Build Date: 2021-04-19T10:29:57Z
stderr debug
If you prefer debug output to be sent to stderr and seen while the command is running you can override the file behavior
by setting the debug path to a dash: export GOVC_DEBUG_PATH=-
Environment variables
If you're using environment variables to set GOVC_URL
, verify the values are set as expected:
govc env
Connection issues
Check your proxy settings:
env | grep -i https_proxy
Test connection using curl
:
curl --verbose -k -X POST https://x.x.x.x/sdk
Status
Changes to the CLI are subject to semantic versioning.
Refer to the CHANGELOG for version to version changes.
When new govc
commands or flags are added, the PATCH version will be
incremented. This enables you to require a minimum version from within a
script, for example:
govc version -require 0.24
License
govc
is available under the Apache 2 license.
Name
Pronounced "go-v-c", short for "Go(lang) vCenter CLI".
Documentation ¶
There is no documentation for this package.