vSphere 中的虚拟交换机保存在哪里？ （通过 pyVmomi）

Question

I have a number of virtual portgroups on a virtual switch. When I execute

datacenters = si.RetrieveContent().rootFolder.childEntity
for datacenter in datacenters:
    hosts = datacenter.hostFolder.childEntity
    for host in hosts:
        networks = host.network
        for network in networks:
             print network.name

(si is a service instance) I get all the vlans (portgroups) on the network, but none of the switches (which the docs claim should be in the network directory). Given that folders also have the name attribute, any folders that I looked over should have been printed. So where does vsphere/vcenter keep these switches?

Answer 1

To retrieve vSwitches with pyVmomi you can do:

def _get_vim_objects(content, vim_type):
    '''Get vim objects of a given type.'''
    return [item for item in content.viewManager.CreateContainerView(
        content.rootFolder, [vim_type], recursive=True
    ).view]

content = si.RetrieveContent()
for host in self._get_vim_objects(content, vim.HostSystem):
    for vswitch in host.config.network.vswitch:
        print(vswitch.name)

Result would be:

vSwitch0
vSwitch1
vSwitch2

---

To retrieve Distributed vSwitches you can use the _get_vim_objects function (above) with vim_type= vim.dvs.VmwareDistributedVirtualSwitch parameter.

Answer 2

Getting host.network will give you an array of network objects, but not the switch info. To get switch info this is probably the most straightforward approach

datacenters = si.RetrieveContent().rootFolder.childEntity
for datacenter in datacenters:
    networks = datacenter.networkFolder.childEntity
    for network in networks:
        print network.name

The network folder has the virtual switches as well as all the portgroups.

Answer 3

This is what I use to find all DV switches in vCenter and check versions.

def find_all_dvs():
Q = "DVS unsupported versions"
try:
    log.info("Testing %s" % Q)
    host_ip, usr, pwd = vx.vc_ip, vx.vc_mu, vx.vc_mp  # Reusing credentials
    is_Old = False
    si = connect.SmartConnect(host=host_ip, user=usr, pwd=pwd, port=int("443"))
    datacenters = si.RetrieveContent().rootFolder.childEntity
    for datacenter in datacenters:
        networks = datacenter.networkFolder.childEntity
        for vds in networks:
            if (isinstance(vds, vim.DistributedVirtualSwitch)): # Find only DV switches
                log.debug("DVS version: %s, DVS name: %s" %(vds.summary.productInfo.version, vds.summary.name))
                if loose(vds.summary.productInfo.version) <= loose("6.0.0"):
                    is_Old = True
    if is_Old:
        log.info("vSphere 7.x unsupported DVS found.")
        return
    else:
        return

except Exception as err:
    log.error("%s error: %s" % (Q, str(err)))
    log.error("Error detail:%s", traceback.format_exc())
    return