Prevent a loop of DRS
With the DRS/HA cluster if I have an ESX that host randomly restarts during the night.
Is there something in the settings DRS to say after 2 random reboots keep the host in maintenance mode?
Example of the problem.
Failure of the host-> HA kicks in the VMs restarted on other nodes Configuration--> the host reboots and is save vmotions DRS VMs-back > fails host new loops again.
I know I have the ability to use partially automated in the settings of the DRS, but I prefer to use the full automation.
Also if it is taken during the day by a tech they can usually put into Maintence mode before the loop starts again, not so much, but late at night.
Suggestions/comments?
Deactivation of the DRS or DRS in partially autmetted would be the only ways to prevent this, given that the DRS and HA work how are designed - traore
Tags: VMware
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Hi all
Please help me, I'm looking for a way to prevent the loop in a hierarchical table. I tried this with a connection by a trigger after but I had the famous ORA-04091.
Any suggestions?
To simplify the table looks like this:
CREATE TABLE TEMP (ID, PID NUMBER)
And relaxation:
Temp of AFTER INSERT or UPDATE or DELETE ON temp_trigger CREATE OR REPLACE TRIGGER
FOR EACH LINE
REPORT THE NUMBER OF CNT;
BEGIN
SELECT COUNT (1) IN THE CNT
DE)
SELECT T.*, CONNECT_BY_ISCYCLE
TEMPERATURE t
WHERE CONNECT_BY_ISCYCLE = 1
T.ID CONNECT BY NOCYCLE PRIOR = t.PID
);
IF (CNT = 0)
then
RAISE_APPLICATION_ERROR(-20101,'loop');
end if;
I am using oracle 11g
Thank youHello
Welcome to the forum!
I suggest that you use a procedure (or an INSTEAD OF trigger) to edit the table. Then you can query the table itself without triggering ORA-04091 "table is changing."
Everything you do, do it BEFORE the changing table and do not change if it creates a loop. It is much more difficult to correct a mistake AFTER THAT that it has been made.
If you have a foreign key constraint, then you really just have to check this on UPDATE. The foreign key constraint will not let you INSERTED rows that give rise to a loop.
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Prevent the loop in the .swf file.
How is a prevents loopback .swf files?
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How can I insert an empty value not in loop of mySQL
How can I prevent my loop to try to insert an empty value in the mySQL database? The form that I use has four lines were created automatically. If they only meet in three lines that I have problems with the fourth row is empty. Here is my code that works fine as long as they don't leave an empty field.
< cfloop to = "#form.numba # '1' = ' index 'idx' = >"
< cfset getqty form ["Qty" & idx] = >
< cfset getitem form ["item" & idx] = >
< cfset getunit form ['unit' & idx] = >
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< name cfquery = "insertItems" datasource = "#application.dsn #" >
INSERT in Articles
(orderID,
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< cfqueryparam value = "" #getoid # "CFSQLType ="CF_SQL_INTEGER">,"
< cfqueryparam value = "" #getqty # "CFSQLType ="CF_SQL_INTEGER">,"
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The user can omit one of the lines, not necessarily the last population. In fact, it can fail to complete the entire form.
The best solution is to validate the data prior to the insertion of the database. For example, you can see empty lines as follows
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How to make a loop of swf file? Loop is checked in the properties, but it is not always in the loop...
Chances are that your project file Flash has a stop() at the end of the last image of the film that prevents your looping SWF file. What did you use to create your SWF file?
Nancy O.
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MovieClip Preloader retains a film loop
MovieClip Preloader retains a film loop
I made a preloader MovieClip and all workes fine. The problem is the movie I am loading continues looping. Is it possible to prevent this loop? I used Flash CS5, AS2.
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default image
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URL of affected sites
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The attachment shows my entire code for this.
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Strangely, in the title to "highlight the execution" for debugging, the output has been shown in my oscilloscope (of course, no errors in labview).
What's wrong in my code?
Labmaster.
*) Please run 'merge.vi shape pulse' beware.
Hello labmaster,.
I took a peek at your code, and a question, is that you use the done VI DAQmxBase is task rather than the fact VI DAQmx is operational. You cannot combine the DAQmx and DAQmx Base API and this could be the cause of your error. When you use this VI in DAQmx application the task performed? output will always return the value true. This return value is prevents your loop and resulting in your cleaning tasks before all your data is generated.
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connect the m6220 switches stacked to existing Lan infrastructure
I need to connect two powerconnect M6220 to LAN infrastructure existing.
The switch of two are configured in the stack.
Which is the best way to uplink the new switch to the other two powerconnect 5548.
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I need to implement the network tolerant to failures, maybe I need to configure the tree covering weight on the two links of 10 GB.
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Is there a better alternative? There is another way to prevent the loop network?
Thanks, Francesco
You have a few options.
1. you can simply connect the cables between the M6220 switch stack and the 5548. Set up a trunk connection which allows for VLAN needed overall. Tree covering weight until it is enabled on the switch and not off on specific ports connecting the default switches prevent loops and allow the most profitable link to be active, leaving the second connection as an alternative link in a blocking state.
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Nice day
I'm new to the blackberry development. I created a bitmapbuttonfield using the examples of the advanced user interface. There is a button with an image. I want to display a ToolTip for the button when the button receives the focus. Can someone please help
Thanks in advance
Hello
Use this code:
package mypackage; import net.rim.device.api.ui.Field; import net.rim.device.api.ui.FieldChangeListener; import net.rim.device.api.ui.component.ButtonField; import net.rim.device.api.ui.component.Dialog; public final class MyScreen extends TooltipScreen { ButtonField btn1,btn2,btn3; public MyScreen() { btn1=new ButtonField(); btn1.setChangeListener(new FieldChangeListener() { public void fieldChanged(Field field, int context) { Dialog.alert("Button 1 Click"); } }); btn2=new ButtonField(); btn2.setChangeListener(new FieldChangeListener() { public void fieldChanged(Field field, int context) { Dialog.alert("Button 2 Click"); } }); btn3=new ButtonField(); btn3.setChangeListener(new FieldChangeListener() { public void fieldChanged(Field field, int context) { Dialog.alert("Button 3 Click"); } }); add(btn1, "Button 1"); add(btn2, "Button 2"); add(btn3, "Button 3"); } }
package mypackage; import java.util.Timer; import java.util.TimerTask; import java.util.Vector; import net.rim.device.api.ui.Field; import net.rim.device.api.ui.Graphics; import net.rim.device.api.ui.XYRect; import net.rim.device.api.ui.container.MainScreen; public class TooltipScreen extends MainScreen { TooltipScreen screen = this; boolean doRedraw = false;//prevent infinte redrawing Vector tooltips = new Vector();//vector to hold tooltip strings private Timer tooltipTimer = new Timer(); private TimerTask tooltipTask; boolean alive = false;//is the tooltip alive? used to pop it after our timeout int count = 0;//used to calculate time tooltip is displayed //tooltip popup colours: int backgroundColour = 0xeeeeee; int borderColour = 0xaaaaaa; int fontColour = 0x666666; //the tooltip: String tooltip; int tooltipWidth; int yCoord; int xCoord; //region parameters: XYRect contentArea; int contentBottom; int contentRight; public TooltipScreen() { super(); //when timeout reaches 100ms*20 ie. 2seconds set alive to false and redraw screen: tooltipTask = new TimerTask() { public void run() { if (alive) { count++; if (count == 20) { alive = false; invalidate(); } } } }; tooltipTimer.scheduleAtFixedRate(tooltipTask, 100, 100); } //override add method adds an empty string to tooltip vector: public void add(Field field) { tooltips.addElement(""); super.add(field); } //custom add method for fields with tooltip: add(myField, "myTooltip"); public void add(Field field, String tooltip) { super.add(field); tooltips.addElement(tooltip); } public void setColours(int backgroundColour, int borderColour, int fontColour) { this.backgroundColour = backgroundColour; this.borderColour = borderColour; this.fontColour = fontColour; } //reset everything when user changes focus, //possibly needs logic to check field has actually changed (for listfields, objectchoicefields etc etc) protected boolean navigationMovement(int dx, int dy, int status, int time) { count = 0; alive = true; doRedraw = true; return super.navigationMovement(dx, dy, status, time); } protected void paint(Graphics graphics) { super.paint(graphics); if (alive) { Field focusField = getFieldWithFocus(); tooltip = (String) tooltips.elementAt(screen.getFieldWithFocusIndex()); //don't do anything outside the norm unless this field has a tooltip: if (!tooltip.equals("")) { //get the field content region, this may fall inside the field actual region/coordinates: contentArea = focusField.getContentRect(); contentBottom = contentArea.y + contentArea.height; contentRight = contentArea.x + contentArea.width; //+4 to accomodate 2 pixel padding on either side: tooltipWidth = graphics.getFont().getAdvance(tooltip) + 4; yCoord = contentBottom - focusField.getManager().getVerticalScroll(); //check the tooltip is being drawn fully inside the screen height: if (yCoord > (getHeight() - 30)) { yCoord = getHeight() - 30; } //check the tooltip doesn't get drawn off the right side of the screen: if (contentRight + tooltipWidth < getWidth()) { xCoord = contentRight; } else { xCoord = getWidth() - tooltipWidth; } //draw the tooltip graphics.setColor(backgroundColour); graphics.fillRect(xCoord, yCoord, tooltipWidth, 30); graphics.setColor(borderColour); graphics.drawRect(xCoord, yCoord, tooltipWidth, 30); graphics.setColor(fontColour); graphics.drawText(tooltip, xCoord + 2, yCoord); } } //doRedraw logic prevents infinite loop if (doRedraw) { //System.out.println("redrawing screen: " + System.currentTimeMillis()); screen.invalidate(); doRedraw = false; } } }
package mypackage; import net.rim.device.api.ui.Font; import net.rim.device.api.ui.Graphics; import net.rim.device.api.ui.Manager; import net.rim.device.api.ui.UiApplication; import net.rim.device.api.ui.component.LabelField; import net.rim.device.api.ui.container.PopupScreen; import net.rim.device.api.ui.container.VerticalFieldManager; class MyTooltip extends PopupScreen{ int _x; int _y; TooltipThread _tooltipThread; private MyTooltip(Manager manager) { super(manager); } public void sublayout(int width, int height) { super.sublayout(width,height); setPosition(_x,_y); System.out.println("Tooltip x: " + Integer.toString(_x) + ", y: " + Integer.toString(_y)); } protected void applyTheme() { // Overriden to suppress Border etc. } public void removeToolTip() { if ( _tooltipThread != null ) { _tooltipThread.dismiss(); } } private void display(UiApplication uiApp, int x, int y, int displayTime) { _x = x; _y = y; _tooltipThread = new TooltipThread(uiApp, this, displayTime); _tooltipThread.start(); } public static MyTooltip addToolTip(UiApplication uiApp, String toolTipString, int x, int y, int displayTime) { VerticalFieldManager manager = new VerticalFieldManager(Manager.FIELD_VCENTER|Manager.NON_FOCUSABLE) { protected void paint(Graphics graphics) { graphics.setColor(0x00FFFFFF); // White graphics.fillRect(0,0,getWidth(),getHeight()); graphics.setColor(0x00000000); // Black graphics.drawRect(0,0,getWidth(),getHeight()); super.paint(graphics); } }; MyTooltip toolTip = new MyTooltip(manager); LabelField label = new LabelField(' ' + toolTipString + ' ', LabelField.NON_FOCUSABLE); label.setFont(Font.getDefault().derive(Font.PLAIN, 16)); toolTip.add(label); toolTip.display(uiApp, x, y, displayTime); return toolTip; } class TooltipThread extends Thread { Object _notifyObject = new Object(); // Used to allow user to dismiss this Tooltip PopupScreen _tooltip; // Screen we are going to display UiApplication _ourApplication; // access to pushGlobalScreen and dismissStatus from our Application int _displayTime; // in seconds public TooltipThread(UiApplication ourApplication, PopupScreen tooltip, int displayTime) { _tooltip = tooltip; _ourApplication = ourApplication; _displayTime = displayTime; } public void run() { _ourApplication.pushGlobalScreen(_tooltip, 999, false); synchronized(_notifyObject) { try { _notifyObject.wait(_displayTime * 1000); } catch (Exception e) { } }; _ourApplication.dismissStatus(_tooltip); } public void dismiss() { // notify the waiting object to stop the Thread waiting synchronized(_notifyObject) { _notifyObject.notify(); } } } }
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command ' ip wccp redirect exclude in. "
Hi all, I'll have trouble understanding how the command ' ip wccp redirect exclude in "and hoped someone would be able to give me more information on this subject.
I know that it must be on the interface/subnet where WAAS is connected when "redirect" is used on another interface. I also know that it is used to prevent forwarding loops. What I don't understand is, why it is only necessary when 'redirect' is used, and not when "redirect to" is used?
Thank you all.
Hello
Outbound loops are caused because, before the traffic is sent out of an interface, it is first redirected back in to the network to the WAAS for optimisation. Once optimisation is done, the WAAS then sends the traffic back to the router. If the "ip wccp redirect exclude in" command is not used on the interface that the WAAS is connected to, when the traffic reaches the router's interface that has the outbound redirection, it will then re direct the traffic back to the WAAS and the whole process will start again (and will continue to loop).
If, however, the "ip wccp redirect exclude in" command was put on the router's interface that connects to the WAAS, when the WAAS sent the optimised traffic back to the router, instead of the router sending it back to the WAAS again, the router will know that the traffic should not be optimised (or re-optimised in this case) so it sends the data out of the network towards the WAAS at the remote site.
Your understanding is 100% correct. This is precisely what is happening.
Now, in regards to inbound redirection, the reason why the "ip wccp redirect exclude in" command (or a similar one) isn't required for inbound redirection is because the traffic never reaches a redirected interface twice, therefore a loop cannot form. For example, with outbound redirection, the traffic hits the outbound interface, then gets sent to the WAAS, then gets sent back to that same outbound interface that has the redirection on it. However, with inbound redirection, the traffic hits the inbound interface, it is then sent to the WAAS, the WAAS then sends it back to the router and instead of the traffic being sent back to the same interface that intercepted the traffic (as is the case with outbound redirection), the traffic is instead sent out a different interface on the router and therefore it is not intercepted again.
Again, it is correct.
Concerning
Daniel
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Mutual redistribution between EIGRP and BGP and match statements
Hello Experts
I'm working on a problem of mutual redistribution between EIGRP and BGP
The idea is a beacon (210) on traffic from our LAN on R2 - 2 so that it can be put in correspondence and denied the R3-7. The goal is to prevent routing loops.
The routes are redistributed in R1 - 1, but I am not able to see if the roads are being marked.
Can someone let me know how to check the roads are being filtered with course maps?
TBH, I don't think the market at all.
I have attached the configs and view orders.
I read somewhere the problem was with match type internal route command, but I don't know if this is the problem
Any help will be greatly appreciated.
Topology and configs are attached.
See you soon
Hello
You have 2 points:
- Deny the redistribution of EIGRP routes tag in BGP: you already have with your route map
- You must filter the roads scholar eigrp on R5 to them are not propagated in R2. I'll use a roadmap for the tag and the EIGRP neighbor. The configuration looks like:
IP access-list standard FROM_R4
license to host 192.168.1.2
!
!
EIGRP-TAG route map deny 10
! subnets from R4 with tag 210
match ip route-source FROM_SLDC
game tag 210
EIGRP-TAG allowed 20 route map
!
Router eigrp 65100
! Filtering of marked routes
route map EIGRP-distribute-list tag in
!Currently, you are missing a piece to import these networks R5.
Thank you
PS: Please do not forget to rate and score as correct answer if this answered your question
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Balancing of VMware with Nexus 1000v
With the vmware puts vDS or vSS, I see many designs use the asset-liability approach for binding rising consolidation of NETWORK cards, IE a vmnic is active will fabric and a vmnic is passive will fabric B. This setting is configured in vSphere.
Se this article: http://bradhedlund.com/2010/09/15/vmware-10ge-qos-designs-cisco-ucs-nexus/
Is this correct, that we can put in place a regime with the 1000V? All the network is on the 1000V config, and as far as I know, we can only configure the uplink in these 3 modes:
1. LACP 2. vPC-Host Mode 3. vPC-Host Mode Mac pinning
and they are all 'active' based.
Post edited by: Atle Dale
Yes. All uplinks are used. Each VM virtual interface is pinned to one of of the uplinks. If one uplink goes down, all interfaces pinned gets dynamically likes to remaining uplinks. A mac address will only see on a single interface at a time. This is how MAC pinning prevents STP loops.
Robert
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