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Cloverleaf_5340's avatar
Cloverleaf_5340
Icon for Nimbostratus rankNimbostratus
Jun 14, 2014

DIsabling nodes in iControl REST shows related members as "up". How do you discover true state?

When disabling a node by PUTing the state to "user-down", the node goes down, and the GUI reflects this. Pool members of that node also show their state as down as well in the GUI (as you'd expect), but when you query the state of the member with REST, the state is shown as "up". I suppose you could say this is ~technically~ true, in that the member itself is not disabled, it's just inheriting the state of the node, but how would I then get the "overall" state of the member? It seems... messy... to have to query the nodes and then do a comparison with the member names against the node names to see if the member state is being overridden by the node state.

 

Does anyone have any suggestions here? This is on 11.5.1 HF2, so we're pretty up-to-date.

 

application delivery
iControlREST
LTM

1 Reply

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  • Patrik_Jonsson's avatar
    Patrik_Jonsson
    Icon for MVP rankMVP
    Jun 16, 2014

    Hi!

    You can actually check it, but you need to check the enabled status for that.

    Evaluate the following script (written in Powershell but the methods are the same):

    Initialize Snapin

if ( (Get-PSSnapin | Where-Object { $_.Name -eq "iControlSnapIn"}) -eq $null ){
    Add-PSSnapIn iControlSnapIn
}

Add a custom class with properties matching the object you got before
Add-Type @'
public class Member
{
    public string Pool;
    public string Address;
    public string Port;
    public string Name;
    public string Availability;
    public string Enabled;
    public string Status;
}
'@


Function Get-Pool-Members {

    Param([string]$BigIP, [string]$User, [string]$Password, [string]$Partition="Common") 

    Declare variables
    $ObjMembers = @()
    $NodeDict = @{}

    Connect to the BigIP
    $Success = Initialize-F5.iControl -HostName $BigIP -Username $User -Password $Password

    Get an iControl Handle
    $F5 = Get-F5.iControl

    Change Partition
    $F5.ManagementPartition.set_active_partition($Partition)

    Get Pool Lists, statuses, nodes etc
    $PoolList = $f5.LocalLBPool.get_list()
    $Poolmembers = $f5.LocalLBPool.get_member_v2($PoolList)
    $PoolMemberstatuses = $F5.LocalLBPool.get_member_object_status($PoolList, $Poolmembers)
    $NodeList = $F5.LocalLBNodeAddressV2.get_list()
    $NodeIPList = $f5.LocalLBNodeAddressV2.get_address($NodeList)

    Save the nodes in a dictionary for convenient access
    for($i=0;$i -lt ($NodeList.Count);$i++){
        $NodeDict.Add($NodeList[$i], $NodeIPList[$i])
    }

    for($i=0;$i -lt ($PoolList.Count);$i++){

        for($x=0;$x -lt ($PoolMembers[$i].Count);$x++){

            Create a new temporary object of the member class
            $objTempMember = New-Object Member

            Populate the object
            $objTempMember.Pool = $PoolList[$i]
            $objTempMember.name = $PoolMembers[$i][$x].address
            $objTempMember.Address = $NodeDict[$objTempMember.name]
            $objTempMember.Port = $PoolMembers[$i][$x].port
            $objTempMember.Availability = $PoolMemberstatuses[$i][$x].availability_status
            $objTempMember.Enabled = $PoolMemberstatuses[$i][$x].enabled_status
            $objTempMember.Status = $PoolMemberstatuses[$i][$x].status_description

            Add the object to a list
            $ObjMembers += $objTempMember
        }

    }
    Return the object list
    Return $ObjMembers

}

$poolmembers = Get-Pool-Members -BigIP "192.168.161.10" -User "iUser" -Password "mypassword" -Partition "Common"

    This would generate the following output in my config:

    Pool         : /Common/SorryPool
Address      : 192.168.174.1
Port         : 8090
Name         : /Common/PajoIIS
Availability : AVAILABILITY_STATUS_GREEN
Enabled      : ENABLED_STATUS_DISABLED_BY_PARENT
Status       : Pool member is available

Pool         : /Common/allpool
Address      : 192.168.174.1
Port         : 8082
Name         : /Common/PajoIIS
Availability : AVAILABILITY_STATUS_GREEN
Enabled      : ENABLED_STATUS_DISABLED_BY_PARENT
Status       : Pool member is available

Pool         : /Common/PajoIIS-8080-8081_pool
Address      : 192.168.174.1
Port         : 8080
Name         : /Common/PajoIIS
Availability : AVAILABILITY_STATUS_GREEN
Enabled      : ENABLED_STATUS_DISABLED
Status       : Pool member is available, user disabled

Pool         : /Common/PajoIIS-8080-8081_pool
Address      : 192.168.174.1
Port         : 8081
Name         : /Common/PajoIIS
Availability : AVAILABILITY_STATUS_GREEN
Enabled      : ENABLED_STATUS_DISABLED_BY_PARENT
Status       : Pool member is available

    The key here would be this method:

    https://devcentral.f5.com/wiki/iControl.LocalLB__Pool__get_member_object_status.ashx

    Which would return an objectstatus object:

    https://devcentral.f5.com/wiki/iControl.LocalLB__ObjectStatus.ashx

    Hope that helped!

    /Patrik