rss.2

<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0" xmlns:media="http://search.yahoo.com/mrss/"><channel><title><![CDATA[Servers | Containers | Management]]></title><description><![CDATA[Servers | Containers | Management]]></description><link>http://localhost:2368/</link><generator>Ghost 0.11</generator><lastBuildDate>Mon, 07 Nov 2016 23:14:48 GMT</lastBuildDate><atom:link href="http://localhost:2368/rss/" rel="self" type="application/rss+xml"/><ttl>60</ttl><item><title><![CDATA[watch for ucs server events - ucsmsdk]]></title><description><![CDATA[<p>Starting 0.9.1.1 we have simplified the code required to wait for an event.</p>

<p>The below code creates a Service Profile Mo <code>org-root/ls-eventhandle</code> <br>
We then create two threads each thread invokes a wait<em>for</em>event method to wait for a specific condition <br>
Here, we wait for the</p>]]></description><link>http://localhost:2368/watch-for-ucs-server-events-ucsmsdk/</link><guid isPermaLink="false">93f6ab52-9442-41cb-a93f-b9073134c1b0</guid><category><![CDATA[ucsmsdk]]></category><category><![CDATA[ucspython]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 23:08:02 GMT</pubDate><content:encoded><![CDATA[<p>Starting 0.9.1.1 we have simplified the code required to wait for an event.</p>

<p>The below code creates a Service Profile Mo <code>org-root/ls-eventhandle</code> <br>
We then create two threads each thread invokes a wait<em>for</em>event method to wait for a specific condition <br>
Here, we wait for the <code>descr</code> property to change to specific values</p>

<pre><code>import threading  
from ucsmsdk.ucshandle import UcsHandle  
from ucsmsdk.mometa.ls.LsServer import LsServer

handle = UcsHandle(&lt;ucsm_ip&gt;, &lt;username&gt;, &lt;password&gt;)  
handle.login()


# remove is already exists
sp = handle.query_dn("org-root/ls-eventhandle")  
if sp:  
    handle.remove_mo(sp)
    handle.commit()


# add
org = handle.query_dn("org-root")  
sp = LsServer(org, name="eventhandle", descr="")  
handle.add_mo(sp, True)  
handle.commit()


def cb(mce):  
    print mce.mo.descr


def one():  
    handle.wait_for_event(sp, "descr", "demo_one", cb)


def two():  
    handle.wait_for_event(sp, "descr", ["demo_two", "demo_three"], cb)

t1 = threading.Thread(name="thread1", target=one)  
t2 = threading.Thread(name="thread2", target=two)

t1.start()  
t2.start()

t1.join()  
t2.join()

handle.logout()  
</code></pre>

<p>The above code when executed will wait, until both the threads finish waiting.</p>

<p>The below script changes the <code>descr</code> property to match condition in thread1. Similarly, thread2's wait ends when either of the two values specified in thread2's <code>wait_for_event</code> are seen.</p>

<pre><code>from ucsmsdk.ucshandle import UcsHandle

handle = UcsHandle(&lt;ucsm_ip&gt;, &lt;username&gt;, &lt;password&gt;)  
handle.login()

sp = handle.query_dn("org-root/ls-eventhandle")

# modify
sp.descr = "demo_one"  
handle.set_mo(sp)  
handle.commit()

handle.logout()  
</code></pre>]]></content:encoded></item><item><title><![CDATA[metadata and MO information - ucsmsdk]]></title><description><![CDATA[<p>ucsmsdk now has helper methods to help figure out MO names and dig into the properties and other metadata provided by an object.</p>

<pre><code>from ucsmsdk.ucscoreutils import search_class_id  
from ucsmsdk.ucscoreutils import get_meta_info  
</code></pre>

<p><code>search_class_id</code> is a case-insensitive grep method that searches all MO names.</p>]]></description><link>http://localhost:2368/metadata-and-mo-information-ucsmsdk/</link><guid isPermaLink="false">fa58f6f5-1977-4ba9-9326-71ef4d005348</guid><category><![CDATA[ucsmsdk]]></category><category><![CDATA[ucspython]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 23:06:21 GMT</pubDate><content:encoded><![CDATA[<p>ucsmsdk now has helper methods to help figure out MO names and dig into the properties and other metadata provided by an object.</p>

<pre><code>from ucsmsdk.ucscoreutils import search_class_id  
from ucsmsdk.ucscoreutils import get_meta_info  
</code></pre>

<p><code>search_class_id</code> is a case-insensitive grep method that searches all MO names.</p>

<pre><code>In [6]: search_class_id("vlan")  
2016-06-11 02:26:01,741 - ucs - INFO - "vlan" did not match any available Class Ids.  
Related Class Ids are:  
----------------------
AdaptorVlan  
FabricBHVlan  
FabricEthVlanPc  
FabricEthVlanPortEp  
FabricOrgVlanPolicy  
FabricPoolableVlan  
FabricPooledVlan  
FabricVlan  
FabricVlanEp  
FabricVlanGroupReq  
FabricVlanPermit  
FabricVlanReq  
SwVlan  
SwVlanGroup  
SwVlanPortNs  
SwVlanPortNsOverride  
SwVlanRef  
VmVlan  
VnicLifVlan  
VnicVlan  
</code></pre>

<p>Once you have figured the correct MO name, you can use get<em>meta</em>info to dig further into the MO. <br>
Below we get meta information for <code>FabricVlan</code></p>

<p>It starts with a tree view of where <code>FabricVlan</code> fits, it parents and children. <br>
Then it shows MO information <br>
Finally, it shows information about properties of the MO. <br>
Mo Property information: <br>
<code>xml_attribute</code> - the name of the property as expected by the server.</p>

<p><code>field_type</code> - type of the field</p>

<p><code>min_version</code> - Ucs server release in which the property was first introduced</p>

<p><code>access</code> - defines if a property is interal/user-readable/user-writable</p>

<p>property restrictions: <br>
<code>min_length</code> - minimum length for string property type</p>

<p><code>max_length</code> - maximum length for string property type</p>

<p><code>pattern</code> - allowed patterns, regexs</p>

<p><code>value_set</code> - set of allowed values for this property</p>

<p><code>range_val</code> - range for int/uint values</p>

<pre><code>In [7]: class_meta = get_meta_info("FabricVlan")  
In [8]: print class_meta  
[FabricEthEstc]
[FabricEthEstcCloud]
[FabricEthLan]
[FabricLanCloud]
  |-FabricVlan
     |-FabricEthMonFiltEp
     |-FabricEthMonSrcEp
     |-FabricEthVlanPc
     |  |-FaultInst
     |-FabricEthVlanPortEp
     |  |-FaultInst
     |-FabricPoolableVlan
     |-FabricSwSubGroup
     |  |-FabricEthVlanPortEp
     |  |  |-FaultInst
     |  |-FabricFcoeVsanPortEp
     |     |-FaultInst
     |-FaultInst

ClassId                         FabricVlan  
-------                         ----------
xml_attribute                   :fabricVlan  
rn                              :net-[name]  
min_version                     :1.0(1e)  
access                          :InputOutput  
access_privilege                :['admin', 'ext-lan-config', 'ext-lan-policy']  
parents                         :[u'fabricEthEstc', u'fabricEthEstcCloud', u'fabricEthLan', u'fabricLanCloud']  
children                        :[u'fabricEthMonFiltEp', u'fabricEthMonSrcEp', u'fabricEthVlanPc', u'fabricEthVlanPortEp', u'fabricPoolableVlan', u'fabricSwSubGroup', u'faultInst']

Property                        assoc_primary_vlan_state  
--------                        ------------------------
xml_attribute                   :assocPrimaryVlanState  
field_type                      :string  
min_version                     :2.2(2c)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['does-not-exists', 'is-empty', 'is-in-error-state', 'is-not-primary-type', 'ok']  
range_val                       :[]

Property                        assoc_primary_vlan_switch_id  
--------                        ----------------------------
xml_attribute                   :assocPrimaryVlanSwitchId  
field_type                      :string  
min_version                     :2.2(2c)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['A', 'B', 'NONE']  
range_val                       :[]

Property                        child_action  
--------                        ------------
xml_attribute                   :childAction  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :INTERNAL  
min_length                      :None  
max_length                      :None  
pattern                         :((deleteAll|ignore|deleteNonPresent),){0,2}(deleteAll|ignore|deleteNonPresent){0,1}  
value_set                       :[]  
range_val                       :[]

Property                        cloud  
--------                        -----
xml_attribute                   :cloud  
field_type                      :string  
min_version                     :2.1(1a)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :((defaultValue|unknown|fcsanmon|ethlan|ethestclan|fcestc|ethlanmon|fcsan),){0,7}(defaultValue|unknown|fcsanmon|ethlan|ethestclan|fcestc|ethlanmon|fcsan){0,1}  
value_set                       :[]  
range_val                       :[]

Property                        compression_type  
--------                        ----------------
xml_attribute                   :compressionType  
field_type                      :string  
min_version                     :2.1(1a)  
access                          :READ_WRITE  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['excluded', 'included']  
range_val                       :[]

Property                        config_issues  
--------                        -------------
xml_attribute                   :configIssues  
field_type                      :string  
min_version                     :2.1(1a)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :((defaultValue|not-applicable|conflicting-vlan-access|unsupported-multicast-policy),){0,3}(defaultValue|not-applicable|conflicting-vlan-access|unsupported-multicast-policy){0,1}  
value_set                       :[]  
range_val                       :[]

Property                        default_net  
--------                        -----------
xml_attribute                   :defaultNet  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_WRITE  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['false', 'no', 'true', 'yes']  
range_val                       :[]

Property                        dn  
--------                        --
xml_attribute                   :dn  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :0  
max_length                      :256  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        ep_dn  
--------                        -----
xml_attribute                   :epDn  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :0  
max_length                      :256  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        flt_aggr  
--------                        --------
xml_attribute                   :fltAggr  
field_type                      :ulong  
min_version                     :2.1(1a)  
access                          :INTERNAL  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        id  
--------                        --
xml_attribute                   :id  
field_type                      :uint  
min_version                     :1.0(1e)  
access                          :READ_WRITE  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :[]  
range_val                       :['1-4029', '4048-4093']

Property                        if_role  
--------                        -------
xml_attribute                   :ifRole  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['diag', 'fcoe-nas-storage', 'fcoe-storage', 'fcoe-uplink', 'mgmt', 'monitor', 'nas-storage', 'network', 'network-fcoe-uplink', 'server', 'service', 'storage', 'unknown']  
range_val                       :[]

Property                        if_type  
--------                        -------
xml_attribute                   :ifType  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['aggregation', 'physical', 'unknown', 'virtual']  
range_val                       :[]

Property                        local  
--------                        -----
xml_attribute                   :local  
field_type                      :ulong  
min_version                     :2.1(2a)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        locale  
--------                        ------
xml_attribute                   :locale  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :((defaultValue|unknown|server|chassis|internal|external),){0,5}(defaultValue|unknown|server|chassis|internal|external){0,1}  
value_set                       :[]  
range_val                       :[]

Property                        mcast_policy_name  
--------                        -----------------
xml_attribute                   :mcastPolicyName  
field_type                      :string  
min_version                     :2.1(1a)  
access                          :READ_WRITE  
min_length                      :None  
max_length                      :None  
pattern                         :[\-\.:_a-zA-Z0-9]{0,16}  
value_set                       :[]  
range_val                       :[]

Property                        name  
--------                        ----
xml_attribute                   :name  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :NAMING  
min_length                      :None  
max_length                      :None  
pattern                         :[\-\.:_a-zA-Z0-9]{1,32}  
value_set                       :[]  
range_val                       :[]

Property                        oper_mcast_policy_name  
--------                        ----------------------
xml_attribute                   :operMcastPolicyName  
field_type                      :string  
min_version                     :2.1(1a)  
access                          :READ_ONLY  
min_length                      :0  
max_length                      :256  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        oper_state  
--------                        ----------
xml_attribute                   :operState  
field_type                      :string  
min_version                     :2.0(1m)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['error-misconfigured', 'ok']  
range_val                       :[]

Property                        overlap_state_for_a  
--------                        -------------------
xml_attribute                   :overlapStateForA  
field_type                      :string  
min_version                     :2.2(2c)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['active', 'not-active', 'ok', 'primary-id-mismatch', 'sharing-type-mismatch']  
range_val                       :[]

Property                        overlap_state_for_b  
--------                        -------------------
xml_attribute                   :overlapStateForB  
field_type                      :string  
min_version                     :2.2(2c)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['active', 'not-active', 'ok', 'primary-id-mismatch', 'sharing-type-mismatch']  
range_val                       :[]

Property                        peer_dn  
--------                        -------
xml_attribute                   :peerDn  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :0  
max_length                      :256  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        policy_owner  
--------                        ------------
xml_attribute                   :policyOwner  
field_type                      :string  
min_version                     :2.1(2a)  
access                          :READ_WRITE  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['local', 'pending-policy', 'policy']  
range_val                       :[]

Property                        pub_nw_dn  
--------                        ---------
xml_attribute                   :pubNwDn  
field_type                      :string  
min_version                     :1.4(1i)  
access                          :READ_ONLY  
min_length                      :0  
max_length                      :256  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        pub_nw_id  
--------                        ---------
xml_attribute                   :pubNwId  
field_type                      :uint  
min_version                     :1.4(1i)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        pub_nw_name  
--------                        -----------
xml_attribute                   :pubNwName  
field_type                      :string  
min_version                     :1.4(1i)  
access                          :READ_WRITE  
min_length                      :0  
max_length                      :510  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        r_global  
--------                        --------
xml_attribute                   :global  
field_type                      :ulong  
min_version                     :2.1(2a)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        rn  
--------                        --
xml_attribute                   :rn  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :0  
max_length                      :256  
pattern                         :None  
value_set                       :[]  
range_val                       :[]

Property                        sacl  
--------                        ----
xml_attribute                   :sacl  
field_type                      :string  
min_version                     :3.0(2a)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :((none|del|mod|addchild|cascade),){0,4}(none|del|mod|addchild|cascade){0,1}  
value_set                       :[]  
range_val                       :[]

Property                        sharing  
--------                        -------
xml_attribute                   :sharing  
field_type                      :string  
min_version                     :1.4(1i)  
access                          :READ_WRITE  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['community', 'isolated', 'none', 'primary']  
range_val                       :[]

Property                        status  
--------                        ------
xml_attribute                   :status  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_WRITE  
min_length                      :None  
max_length                      :None  
pattern                         :((removed|created|modified|deleted),){0,3}(removed|created|modified|deleted){0,1}  
value_set                       :[]  
range_val                       :[]

Property                        switch_id  
--------                        ---------
xml_attribute                   :switchId  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :None  
value_set                       :['A', 'B', 'NONE', 'dual']  
range_val                       :[]

Property                        transport  
--------                        ---------
xml_attribute                   :transport  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :((defaultValue|unknown|ether|dce|fc),){0,4}(defaultValue|unknown|ether|dce|fc){0,1}  
value_set                       :[]  
range_val                       :[]

Property                        type  
--------                        ----
xml_attribute                   :type  
field_type                      :string  
min_version                     :1.0(1e)  
access                          :READ_ONLY  
min_length                      :None  
max_length                      :None  
pattern                         :((defaultValue|unknown|lan|san|ipc),){0,4}(defaultValue|unknown|lan|san|ipc){0,1}  
value_set                       :[]  
range_val                       :[]
</code></pre>]]></content:encoded></item><item><title><![CDATA[Multiple parallel transactions - ucsmsdk 0.9.1.1]]></title><description><![CDATA[<p>Until <code>ucsmsdk</code> 0.9.1.0 everything until a <code>handle.commit</code> was a single transaction,</p>

<pre><code>handle.add_mo(mo1)  
handle.add_mo(mo2)  
handle.remove_mo(mo3)  
handle.commit()  
</code></pre>

<p>Starting 0.9.1.1 there is an optional <code>tag</code> parameter added to <code>add_mo</code>,<code>set_mo</code>,<code>remove_mo</code>,<code>commit</code>. <code>tag</code></p>]]></description><link>http://localhost:2368/multiple-parallel-transactions-ucsmsdk-0-9-1-1/</link><guid isPermaLink="false">1d7533c5-68a6-45e3-ab91-622692bd10a0</guid><category><![CDATA[ucsmsdk]]></category><category><![CDATA[ucspython]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 23:03:23 GMT</pubDate><content:encoded><![CDATA[<p>Until <code>ucsmsdk</code> 0.9.1.0 everything until a <code>handle.commit</code> was a single transaction,</p>

<pre><code>handle.add_mo(mo1)  
handle.add_mo(mo2)  
handle.remove_mo(mo3)  
handle.commit()  
</code></pre>

<p>Starting 0.9.1.1 there is an optional <code>tag</code> parameter added to <code>add_mo</code>,<code>set_mo</code>,<code>remove_mo</code>,<code>commit</code>. <code>tag</code> is the scope of a transaction.</p>

<p>So, here is how two parallel transactions can be done.  </p>

<pre><code>handle.add_mo(mo1, tag="trans_1")  
handle.add_mo(mo2, tag="trans_2")  
handle.add_mo(mo3, tag="trans_1")  
handle.remove_mo(mo4, tag="trans_2")

# Commit transaction #2
handle.commit(tag="trans_2")

handle.add_mo(mo5, tag="trans_1")

# Commit transaction #1
handle.commit(tag="trans_1")  
</code></pre>

<p>use case: if we wanted to use the same handle object in different threads, the thread.name could be passed as the tag parameter. This would ensure that operations in one thread do not affect others.</p>

<p>Without the tag parameter the behaviour is as it was in 0.9.1.0</p>]]></content:encoded></item><item><title><![CDATA[Polling for a specific event ucsmsdk.]]></title><description><![CDATA[<p>Optional poll mode is added to wait<em>for</em>event API</p>

<p>The below code will wait for the <code>usr_lbl</code> property of the service profile <code>org-root/ls-demo-sp</code> to change to <code>demo_label</code>. It will poll the server every poll_sec=10 here. It will timeout after 600 seconds.</p>

<p><code>wait_for_event</code></p>]]></description><link>http://localhost:2368/polling-for-a-specific-event-ucsmsdk/</link><guid isPermaLink="false">634fffee-771e-4689-86c5-a33ee4731ec8</guid><category><![CDATA[ucsmsdk]]></category><category><![CDATA[ucspython]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 23:01:12 GMT</pubDate><content:encoded><![CDATA[<p>Optional poll mode is added to wait<em>for</em>event API</p>

<p>The below code will wait for the <code>usr_lbl</code> property of the service profile <code>org-root/ls-demo-sp</code> to change to <code>demo_label</code>. It will poll the server every poll_sec=10 here. It will timeout after 600 seconds.</p>

<p><code>wait_for_event</code> will keep the script alive until (i) either the condition is met or (ii) timeout is triggered</p>

<pre><code>from ucsmsdk.ucshandle import UcsHandle

def usr_label_changed(mce):  
     print(mce.mo.usr_label)
     handle.logout()

handle = UcsHandle("192.168.1.1", "username", "password")  
handle.login()

sp_mo = handle.query_dn("org-root/ls-demo-sp")

handle.wait_for_event(  
    mo=sp_mo,
    prop="usr_lbl",
    value="demo_label",
    cb=usr_label_changed,
    timeout=600,
    poll_sec=10
    )
</code></pre>]]></content:encoded></item><item><title><![CDATA[docker - failed to set link up: address already in use]]></title><description><![CDATA[<p>Noticed the following error message while trying to bring up Docker DTR container.</p>

<pre><code>FATA[0003] Error response from daemon: subnet sandbox join failed for "10.1.0.0/24": vxlan interface creation failed for subnet "10.1.0.0/24": failed to set link up: address already in use  
I</code></pre>]]></description><link>http://localhost:2368/docker-failed-to-set-link-up-address-already-in-use/</link><guid isPermaLink="false">a68e0388-a542-44cd-9a47-69606a236cc3</guid><category><![CDATA[docker]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:59:57 GMT</pubDate><content:encoded><![CDATA[<p>Noticed the following error message while trying to bring up Docker DTR container.</p>

<pre><code>FATA[0003] Error response from daemon: subnet sandbox join failed for "10.1.0.0/24": vxlan interface creation failed for subnet "10.1.0.0/24": failed to set link up: address already in use  
I went on a wild-goose chase trying to figure out who was using 10.1.0.0/24. It turns out that it was caused due to the 4789 UDP port conflict that VXLAN uses.  
</code></pre>

<p>Both Docker overlay and Contiv overlay use VXLAN and use the same port. In this specific scenario Contiv was already using port 4789, and so the failure was seen while configuring a docker overlay network.</p>

<p>Takeaway: The error message should probably be enhanced to point out the port conflict.</p>]]></content:encoded></item><item><title><![CDATA[ucsmsdk offline pip install with dependencies]]></title><description><![CDATA[<p>The server you want to install the SDK on sometimes might not have internet connectivity. <br>
The following facilitate a offline install,</p>

<p>On a machine with internet connectivity (this could be your PC or Mac),  </p>

<pre><code>pip install --download /path/to/save/dependencies  
</code></pre>

<ul>
<li>Now copy /path/to/save/dependencies to the server</li></ul>]]></description><link>http://localhost:2368/ucsmsdk-offline-pip-install-with-dependencies/</link><guid isPermaLink="false">292b9255-f0a8-458c-b659-d4097fc2654f</guid><category><![CDATA[ucsmsdk]]></category><category><![CDATA[ucspython]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:59:16 GMT</pubDate><content:encoded><![CDATA[<p>The server you want to install the SDK on sometimes might not have internet connectivity. <br>
The following facilitate a offline install,</p>

<p>On a machine with internet connectivity (this could be your PC or Mac),  </p>

<pre><code>pip install --download /path/to/save/dependencies  
</code></pre>

<ul>
<li>Now copy /path/to/save/dependencies to the server that does not have internet access.</li>
<li>The SDK can now be installed offline using,</li>
</ul>

<pre><code>pip install --no-index --find-links /path/to/save/dependencies  
</code></pre>

<p>Example:</p>

<pre><code>➜  ~ pip install ucsmsdk --download /tmp/ucsmsdk
DEPRECATION: pip install --download has been deprecated and will be removed in the future. Pip now has a download command that should be used instead.  
Collecting ucsmsdk  
  Downloading ucsmsdk-0.9.1.1-py2.py3-none-any.whl (5.9MB)
    100% |████████████████████████████████| 5.9MB 218kB/s
  Saved /tmp/ucsmsdk/ucsmsdk-0.9.1.1-py2.py3-none-any.whl
Collecting pyparsing (from ucsmsdk)  
  Using cached pyparsing-2.1.5-py2.py3-none-any.whl
  Saved /tmp/ucsmsdk/pyparsing-2.1.5-py2.py3-none-any.whl
Successfully downloaded ucsmsdk pyparsing  
➜  ~
➜  ~ ls -l /tmp/ucsmsdk
total 11552  
-rw-r--r--  1 vvb  wheel    42540 Jul 20 10:16 pyparsing-2.1.5-py2.py3-none-any.whl
-rw-r--r--  1 vvb  wheel  5867759 Jul 20 10:16 ucsmsdk-0.9.1.1-py2.py3-none-any.whl
➜  ~
➜  ~ sudo pip install ~/work/tpi/release/ucsmsdk/dist/ucsmsdk-0.9.1.1.tar.gz --no-index --find-links /tmp/ucsmsdk
The directory '/Users/vvb/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.  
Ignoring indexes: https://pypi.python.org/simple  
The directory '/Users/vvb/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.  
Processing ./work/tpi/release/ucsmsdk/dist/ucsmsdk-0.9.1.1.tar.gz  
Requirement already satisfied (use --upgrade to upgrade): pyparsing in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from ucsmsdk==0.9.1.1)  
Installing collected packages: ucsmsdk  
  Found existing installation: ucsmsdk 0.9.1.0
    Uninstalling ucsmsdk-0.9.1.0:
      Successfully uninstalled ucsmsdk-0.9.1.0
  Running setup.py install for ucsmsdk ... done
Successfully installed ucsmsdk-0.9.1.1  
➜  ~
</code></pre>]]></content:encoded></item><item><title><![CDATA[checking if a docker container is running]]></title><description><![CDATA[<p>The following will return true if the container is running and false otherwise.</p>

<p><code>docker inspect -f {{.State.Running}} "$container_id"</code></p>

<p>The following fetches container id based on it's name,</p>

<pre><code>name=alpine  
count=$(docker ps | grep "$name" | wc -l)  
if [ $count == 1 ]; then  
    id=$(docker ps | grep "$name" | cut -d '</code></pre>]]></description><link>http://localhost:2368/checking-if-a-docker-container-is-running/</link><guid isPermaLink="false">6cae6391-db69-43b6-b7a8-080f38bafd5a</guid><category><![CDATA[docker]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:57:28 GMT</pubDate><content:encoded><![CDATA[<p>The following will return true if the container is running and false otherwise.</p>

<p><code>docker inspect -f {{.State.Running}} "$container_id"</code></p>

<p>The following fetches container id based on it's name,</p>

<pre><code>name=alpine  
count=$(docker ps | grep "$name" | wc -l)  
if [ $count == 1 ]; then  
    id=$(docker ps | grep "$name" | cut -d ' ' -f 1)
    echo "$container_id"
elif [ $count == 0 ]; then  
    echo "No container with name $name"
else  
    echo "more than one container with name $name"
fi  
</code></pre>

<p>note: In the above example we use docker ps and not docker ps -a. So, we can already assume that the containers it returns are in running state.</p>]]></content:encoded></item><item><title><![CDATA[Ucs config backup to Python script - ucsmsdk]]></title><description><![CDATA[<p><code>ucmsdk</code> in version 0.9.2.0 will add the ability of being able to generate a python script for configuring Ucs server based on a config state backup XML.</p>

<p><code>convert_from_backup(backup_file, output_file=None)</code></p>

<p><code>backup_file</code> - needs to a config backup XML downloaded from a</p>]]></description><link>http://localhost:2368/ucs-config-backup-to-python-script-ucsmsdk/</link><guid isPermaLink="false">b03c3364-2252-4cab-b570-12f3aef89c23</guid><category><![CDATA[ucsmsdk]]></category><category><![CDATA[ucspython]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:56:33 GMT</pubDate><content:encoded><![CDATA[<p><code>ucmsdk</code> in version 0.9.2.0 will add the ability of being able to generate a python script for configuring Ucs server based on a config state backup XML.</p>

<p><code>convert_from_backup(backup_file, output_file=None)</code></p>

<p><code>backup_file</code> - needs to a config backup XML downloaded from a UCS server.</p>

<p><code>output_file</code> - file where the equivalent python script is desired.</p>

<p>Example usage:</p>

<pre><code>from ucsmsdk.utils.convertfrombackup import convert_from_backup  
convert_from_backup(backup_file="/Users/vvb/configbackup.xml", output_file="/Users/vvb/ucs_config.py")  
</code></pre>

<p>Without the output_file argument, the output is redirected to stdout.</p>

<p>Usage:</p>

<p>Below is a very small part of the config backup xml,  </p>

<pre><code>&lt;?xml version="1.0" ?&gt;  
&lt;topRoot&gt;  
  &lt;topMetaInf ecode="E001" name="meta-sec"/&gt;
    &lt;orgOrg descr="" name="root"&gt;
      &lt;lsbootPolicy bootMode="legacy" descr="" enforceVnicName="yes" name="new_boot_pol" policyOwner="local" purpose="operational" rebootOnUpdate="no"&gt;
        &lt;lsbootVirtualMedia access="read-only-remote-cimc" lunId="0" mappingName="" order="1"/&gt;
    &lt;lsbootVirtualMedia access="read-only-local" lunId="0" mappingName="" order="2"/&gt;
    &lt;lsbootStorage order="3"&gt;
      &lt;lsbootLocalStorage&gt;
        &lt;lsbootUsbFlashStorageImage order="3"/&gt;
      &lt;/lsbootLocalStorage&gt;
    &lt;/lsbootStorage&gt;
      &lt;/lsbootPolicy&gt;
    &lt;/orgOrg&gt;
&lt;/topRoot&gt;  
</code></pre>

<p>will be converted into</p>

<pre><code>#!/usr/bin/env python

from ucsmsdk.ucshandle import UcsHandle

handle = UcsHandle(ip="", username="", password="")  
handle.login()

from ucsmsdk.mometa.lsboot.LsbootPolicy import LsbootPolicy  
from ucsmsdk.mometa.lsboot.LsbootVirtualMedia import LsbootVirtualMedia  
from ucsmsdk.mometa.lsboot.LsbootStorage import LsbootStorage  
from ucsmsdk.mometa.lsboot.LsbootLocalStorage import LsbootLocalStorage  
from ucsmsdk.mometa.lsboot.LsbootUsbFlashStorageImage import LsbootUsbFlashStorageImage



mo = LsbootPolicy(parent_mo_or_dn=obj, name="new_boot_pol", reboot_on_update="no", policy_owner="local", purpose="operational", enforce_vnic_name="yes", boot_mode="legacy")  
mo_1 = LsbootVirtualMedia(parent_mo_or_dn=mo, access="read-only-remote-cimc", lun_id="0", order="1")  
mo_2 = LsbootVirtualMedia(parent_mo_or_dn=mo, access="read-only-local", lun_id="0", order="2")  
mo_3 = LsbootStorage(parent_mo_or_dn=mo, order="3")  
mo_4 = LsbootLocalStorage(parent_mo_or_dn=mo_3, )  
mo_5 = LsbootUsbFlashStorageImage(parent_mo_or_dn=mo_4, order="3")  
handle.add_mo(mo, True)  
handle.commit()

handle.logout()  
</code></pre>]]></content:encoded></item><item><title><![CDATA[Contiv Volplugin Rate limiting - Runtime]]></title><description><![CDATA[<p>One of the coolest features of Contiv volplugin is the ability to modify volume iops,bps resource restrictions on the fly.</p>

<p>This is facilitated by, <br>
volcli volume runtime upload policy/volume &lt; restrictions.json</p>

<p><code>policy/volume</code> - policy name /volume name
<code>restrictions.json</code> - JSON file with resource restrictions</p>

<p>The</p>]]></description><link>http://localhost:2368/contiv-volplugin-rate-limiting-runtime/</link><guid isPermaLink="false">8fa44984-6575-40f4-816a-8f8410299d05</guid><category><![CDATA[contiv]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:54:50 GMT</pubDate><content:encoded><![CDATA[<p>One of the coolest features of Contiv volplugin is the ability to modify volume iops,bps resource restrictions on the fly.</p>

<p>This is facilitated by, <br>
volcli volume runtime upload policy/volume &lt; restrictions.json</p>

<p><code>policy/volume</code> - policy name /volume name
<code>restrictions.json</code> - JSON file with resource restrictions</p>

<p>The entire flow..</p>

<p>Create a policy</p>

<p><code>volcli policy upload policy1 &lt; policy1.json</code></p>

<p>Create a volume</p>

<p><code>volcli volume create policy1/volume1</code></p>

<p>Attach this volume to a container</p>

<p><code>docker run -it -v policy1/volume1:/mntpath ubuntu /bin/bash</code></p>

<p>So, now that the volume is attached - you can still modify the ios/bps on it via volcli</p>

<p>Create a JSON file - restrictions.json,  </p>

<pre><code>    {
        "rate-limit": {
        "write-bps": 1000,
        "read-bps": 10
        }
    }
</code></pre>

<p>Upload the new restrictions,</p>

<p><code>volcli volume runtime upload policy1/volume1 &lt; restrictions.json</code></p>

<p>Done - the new restrictions are active now!</p>]]></content:encoded></item><item><title><![CDATA[vagrant 1.8.5 ssh failures!]]></title><description><![CDATA[<p>Vagrant 1.8.5 throws the below error when doing a vagrant up</p>

<pre><code>default: Warning: Authentication failure. Retrying...  
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning:</code></pre>]]></description><link>http://localhost:2368/vagrant-1-8-5-ssh-failures/</link><guid isPermaLink="false">f37b79ec-4a2b-49b4-800e-984c295073ae</guid><category><![CDATA[vagrant]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:52:52 GMT</pubDate><content:encoded><![CDATA[<p>Vagrant 1.8.5 throws the below error when doing a vagrant up</p>

<pre><code>default: Warning: Authentication failure. Retrying...  
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
    default: Warning: Authentication failure. Retrying...
Timed out while waiting for the machine to boot. This means that  
Vagrant was unable to communicate with the guest machine within  
the configured ("config.vm.boot_timeout" value) time period.

If you look above, you should be able to see the error(s) that  
Vagrant had when attempting to connect to the machine. These errors  
are usually good hints as to what may be wrong.

If you're using a custom box, make sure that networking is properly  
working and you're able to connect to the machine. It is a common  
problem that networking isn't setup properly in these boxes.  
Verify that authentication configurations are also setup properly,  
as well.

If the box appears to be booting properly, you may want to increase  
the timeout ("config.vm.boot_timeout") value.  
</code></pre>

<p>Solution: <br>
Add <code>config.ssh.insert_key = false</code> to the <code>Vagrantfile</code></p>]]></content:encoded></item><item><title><![CDATA[vim plugins]]></title><description><![CDATA[<p>My goto vim plugins,</p>

<pre><code>set rtp+=~/.vim/bundle/Vundle.vim  
call vundle#begin()

" let Vundle manage Vundle, required
Plugin 'VundleVim/Vundle.vim'

Plugin 'mileszs/ack.vim'  
Plugin 'vim-scripts/delimitMate.vim'  
Plugin 'scrooloose/syntastic'  
Plugin 'godlygeek/tabular'  
Plugin 'bling/vim-airline'  
Plugin 'crosbymichael/vim-cfmt'  
Plugin 'altercation/vim-colors-solarized'  
Plugin 'tpope/vim-endwise'  
Plugin 'tpope/</code></pre>]]></description><link>http://localhost:2368/vim-plugins/</link><guid isPermaLink="false">fc5ba70b-caab-4525-8039-bdde4a7b5e8f</guid><category><![CDATA[vim]]></category><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:51:45 GMT</pubDate><content:encoded><![CDATA[<p>My goto vim plugins,</p>

<pre><code>set rtp+=~/.vim/bundle/Vundle.vim  
call vundle#begin()

" let Vundle manage Vundle, required
Plugin 'VundleVim/Vundle.vim'

Plugin 'mileszs/ack.vim'  
Plugin 'vim-scripts/delimitMate.vim'  
Plugin 'scrooloose/syntastic'  
Plugin 'godlygeek/tabular'  
Plugin 'bling/vim-airline'  
Plugin 'crosbymichael/vim-cfmt'  
Plugin 'altercation/vim-colors-solarized'  
Plugin 'tpope/vim-endwise'  
Plugin 'tpope/vim-fugitive'  
Plugin 'fatih/vim-go'  
Plugin 'Yggdroot/indentLine'  
Plugin 'elzr/vim-json'  
Plugin 'kien/ctrlp.vim'  
Plugin 'ntpeters/vim-better-whitespace'  
Plugin 'airblade/vim-gitgutter'  
Plugin 'moorereason/vim-markdownfmt'  
Plugin 'hynek/vim-python-pep8-indent'  
Plugin 'Lokaltog/vim-easymotion'  
Plugin 'majutsushi/tagbar'  
Plugin 'reedes/vim-wordy'  
Plugin 'mattn/gist-vim'  
Plugin 'chase/vim-ansible-yaml'  
Plugin 'Valloric/YouCompleteMe'  
Plugin 'nvie/vim-flake8'

" All of your Plugins must be added before the following line
call vundle#end()            " required  
</code></pre>]]></content:encoded></item><item><title><![CDATA[Python - deprecating APIs]]></title><description><![CDATA[<p>Decorators facilitate an easy way to let users know that a given method is deprecated. You can even point users to the method they should be using instead. This is done by using decorators that accept arguments.</p>

<p>The code below demonstrates this,</p>

<pre><code>import warnings

def deprecated(replaced_by_func):  
    def</code></pre>]]></description><link>http://localhost:2368/python-deprecating-apis/</link><guid isPermaLink="false">90077e72-2c89-487f-81db-af4122a87d26</guid><dc:creator><![CDATA[vvb]]></dc:creator><pubDate>Mon, 07 Nov 2016 22:23:00 GMT</pubDate><content:encoded><![CDATA[<p>Decorators facilitate an easy way to let users know that a given method is deprecated. You can even point users to the method they should be using instead. This is done by using decorators that accept arguments.</p>

<p>The code below demonstrates this,</p>

<pre><code>import warnings

def deprecated(replaced_by_func):  
    def wrap(f):
        def new_func(*args, **kwargs):
            warnings.simplefilter('always', DeprecationWarning)
            warnings.warn(
                "Call to deprecated function " + f.__name__ +
                ". This method is replaced by " + replaced_by_func.__name__,
                category=DeprecationWarning, stacklevel=2)
            warnings.simplefilter('default', DeprecationWarning)
            return f(*args, **kwargs)
        new_func.__dict__.update(f.__dict__)
        new_func.__doc__ = f.__doc__
        new_func.__name__ = f.__name__
        return new_func
    return wrap


def new_method(a, b):  
    return a + b

@deprecated(new_method)
def some_old_method(a, b):  
    return a + b

some_old_method(42+42)  
</code></pre>

<p>When the above code is executed, you would receive a warning stating <code>some_old_method</code> is deprecated, and to use <code>new_method</code> instead.</p>]]></content:encoded></item></channel></rss>