1 00:00:00,000 --> 00:00:06,966 Hi, Let's understand how to leverage the hook weight 2 00:00:06,966 --> 00:00:14,199 when I'm having multiple hooks for the same stage. I'll be creating multiple hooks with preinstalled 3 00:00:14,200 --> 00:00:18,100 stage where it will be having different weights. Based on the weights 4 00:00:18,100 --> 00:00:23,866 It's going to get triggered so that it will not have any confusion on which hook should get triggered 5 00:00:23,866 --> 00:00:27,466 first and which one to get triggered in the last. 6 00:00:27,466 --> 00:00:30,399 So let me go ahead and create a couple of yaml files. 7 00:00:30,400 --> 00:00:44,066 Let me get into the folder templates and remove the earlier yaml files. 8 00:00:44,066 --> 00:00:52,366 Now I'm going to create three yaml files all of type preinstalled hook. Let me add the content. 9 00:00:52,366 --> 00:00:56,766 So it's of kind job where it is going to have annotation it is a hook. 10 00:00:56,766 --> 00:01:03,199 It will get triggered in preinstalled state and hook weight is minus two. 11 00:01:03,200 --> 00:01:09,433 I'm going to add another yaml file 12 00:01:09,433 --> 00:01:13,166 Let me add content to the same. It's the same content. 13 00:01:13,166 --> 00:01:18,466 Only the Echo statement is different and the sleep seconds are different. 14 00:01:18,466 --> 00:01:24,899 Now, I'm changing the weight as well. In this case, the weight is three. 15 00:01:24,900 --> 00:01:31,033 Now, let me add another yaml file. I'm adding the content to it. Here 16 00:01:31,033 --> 00:01:36,866 The weight is five, and the stage when hook will get triggered is preinstalled. 17 00:01:36,866 --> 00:01:41,866 So I do have three hooks, all of type preinstalled having different weights. 18 00:01:41,866 --> 00:01:47,232 Now, let me go ahead and install this particular chart. 19 00:01:47,233 --> 00:01:50,533 Let me check is there any deployment. I do not have any deployment. 20 00:01:50,533 --> 00:01:55,399 Only one which was used earlier. I'll leave it as it is. 21 00:01:55,400 --> 00:02:00,000 Now, let me go ahead and do the installation of this specific chart helm install 22 00:02:00,000 --> 00:02:06,400 name of the chart and the chart folder hooktest. So it got over. 23 00:02:06,400 --> 00:02:13,000 Now let me go ahead and get the status about the pods kubectl get pods 24 00:02:13,000 --> 00:02:18,400 So I do have three pods in the completed state. That is hook one, two and three. 25 00:02:18,400 --> 00:02:25,533 And let me go ahead and check the execution time of these pods, rather than seeing the pods individually 26 00:02:25,533 --> 00:02:34,566 I can go ahead and get the description about all the pods and grep only the name, annotation, started and finished time. 27 00:02:34,566 --> 00:02:37,132 In this case, I am worried only about these three hooks. 28 00:02:37,133 --> 00:02:42,533 That is hook one, hook two and hook three. If you observe very carefully 29 00:02:42,533 --> 00:02:46,866 Hook one started in 31st second got over in 33. 30 00:02:46,866 --> 00:02:51,699 Hook two started afterwards that is 37 and got over at 40. 31 00:02:51,700 --> 00:02:59,400 Then hook three got started and it started at 44 and got over at 49th second. 32 00:02:59,400 --> 00:03:05,400 that means the weightage with less number going to get executed first 33 00:03:05,400 --> 00:03:10,500 And the one with the weightage of high number will get executed later. 34 00:03:10,500 --> 00:03:16,166 This is a good example on how to use the weightage when I do have multiple hooks so that the system will 35 00:03:16,166 --> 00:03:24,332 not have confusion on which hook to pick when it needs to execute multiple hooks for the same stage. 36 00:03:24,333 --> 00:03:27,699 Let me go ahead and remove the deployments 37 00:03:27,700 --> 00:03:41,300 helm delete name of the deployment and delete all the three jobs hook one, hook two and hook three. 38 00:03:41,300 --> 00:03:47,566 Let me make sure there are no pods running and nothing in helm list. 39 00:03:47,566 --> 00:03:51,132 Yes, No additional deployments within helm. 40 00:03:51,133 --> 00:03:59,299 So in a quick summary we discussed about how to use the hook weightage when we do have multiple hooks for the same stage.