cluster | server crash on an unhandled error | Runtime Evironment library

 by   thehelp JavaScript Version: Current License: MIT

kandi X-RAY | cluster Summary

kandi X-RAY | cluster Summary

cluster is a JavaScript library typically used in Travel, Transportation, Logistics, Server, Runtime Evironment, Nodejs applications. cluster has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Don't just let your server crash on an unhandled error, finish everything you were doing first. Multiple techniques used to ensure your clients don't get socket hang-ups. Cluster support and graceful shutdown on SIGTERM too! More information about thehelp.
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            kandi-support Support

              cluster has a low active ecosystem.
              It has 12 star(s) with 0 fork(s). There are 1 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              cluster has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of cluster is current.

            kandi-Quality Quality

              cluster has no bugs reported.

            kandi-Security Security

              cluster has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              cluster is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              cluster releases are not available. You will need to build from source code and install.
              Installation instructions, examples and code snippets are available.

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            cluster Key Features

            No Key Features are available at this moment for cluster.

            cluster Examples and Code Snippets

            No Code Snippets are available at this moment for cluster.

            Community Discussions

            QUESTION

            Finding two centres of array
            Asked 2021-Jun-15 at 13:53

            I have a two dimensional numpy arrays which describes a list of coordinates where something happens. There are two events on the scene and I would like to calculate where those two are. But I do have difficulties to distinguish those two since there isn't any good pattern from event to event.

            Example:

            ...

            ANSWER

            Answered 2021-Jun-15 at 13:53

            There are all manner of clustering algorithms and many are implemented in scikit-learn.cluster. They are well documented and the docs have nice examples, but the various algorithms have trade-offs which can take a while to figure out. For example if you have a general idea about how spaced the clusters are (reflected in the epsilon parameter) you can get good results with DBSCAN:

            Source https://stackoverflow.com/questions/67987352

            QUESTION

            SLURM and Python multiprocessing pool on a cluster
            Asked 2021-Jun-15 at 13:42

            I am trying to run a simple parallel program on a SLURM cluster (4x raspberry Pi 3) but I have no success. I have been reading about it, but I just cannot get it to work. The problem is as follows:

            I have a Python program named remove_duplicates_in_scraped_data.py. This program is executed on a single node (node=1xraspberry pi) and inside the program there is a multiprocessing loop section that looks something like:

            ...

            ANSWER

            Answered 2021-Jun-15 at 06:17

            Pythons multiprocessing package is limited to shared memory parallelization. It spawns new processes that all have access to the main memory of a single machine.

            You cannot simply scale out such a software onto multiple nodes. As the different machines do not have a shared memory that they can access.

            To run your program on multiple nodes at once, you should have a look into MPI (Message Passing Interface). There is also a python package for that.

            Depending on your task, it may also be suitable to run the program 4 times (so one job per node) and have it work on a subset of the data. It is often the simpler approach, but not always possible.

            Source https://stackoverflow.com/questions/67975328

            QUESTION

            using multiple different kafka cluster within one app
            Asked 2021-Jun-15 at 13:28

            This probably ins't typical setup, but due to higher decisions we endup having multiple kafka clusters within one app, multiple topics per each, and each might have different serializing strategy. Json/avro. And avro might be with confluent schema registry or using single object encoding.

            Well I got it working somehow, by building my own abstractions and registry which analyzes the configuration and creates most of stuff manually, but I feel I needed to repeat stuff like topic names, schema registry url on several places multiple times just to create all needed beans. Ugly as hell.

            I'd like to ask, if there is some better way and support for this I just might have overlooked.

            I need to create N representations of kafka clusters, configuring it once. Configure topics respective to given kafka cluster, configure confluent schema registry for topics where applicable etc, so that I can create instance of Avro schema file, send it to KafkaTemplate and it will work.

            ...

            ANSWER

            Answered 2021-Jun-15 at 13:28

            It depends on the complexity and how much different the configurations are, as to whether this will help, but you can override individual Kafka properties (such as bootstrap servers, deserializers, etc on the @KafkaListener and in each KafkaTemplate.

            e.g.

            Source https://stackoverflow.com/questions/67959209

            QUESTION

            kubectl cluster-info why is running on control plane and not master node
            Asked 2021-Jun-15 at 12:59

            Why kubectl cluster-info is running on control plane and not master node And on the control plane it is running on a specific IP Address https://192.168.49.2:8443 and not not localhost or 127.0.0.1 Running the following command in terminal:

            1. minikube start --driver=docker

            😄 minikube v1.20.0 on Ubuntu 16.04 ✨ Using the docker driver based on user configuration 🎉 minikube 1.21.0 is available! Download it: https://github.com/kubernetes/minikube/releases/tag/v1.21.0 💡 To disable this notice, run: 'minikube config set WantUpdateNotification false'

            👍 Starting control plane node minikube in cluster minikube 🚜 Pulling base image ... > gcr.io/k8s-minikube/kicbase...: 358.10 MiB / 358.10 MiB 100.00% 797.51 K ❗ minikube was unable to download gcr.io/k8s-minikube/kicbase:v0.0.22, but successfully downloaded kicbase/stable:v0.0.22 as a fallback image 🔥 Creating docker container (CPUs=2, Memory=2200MB) ... 🐳 Preparing Kubernetes v1.20.2 on Docker 20.10.6 ... ▪ Generating certificates and keys ... ▪ Booting up control plane ... ▪ Configuring RBAC rules ... 🔎 Verifying Kubernetes components... ▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5 🌟 Enabled addons: storage-provisioner, default-storageclass 🏄 Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default

            1. kubectl cluster-info

            Kubernetes control plane is running at https://192.168.49.2:8443 KubeDNS is running at https://192.168.49.2:8443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

            To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

            ...

            ANSWER

            Answered 2021-Jun-15 at 12:59

            The Kubernetes project is making an effort to move away from wording that can be considered offensive, with one concrete recommendation being renaming master to control-plane. In other words control-plane and master mean essentially the same thing, and the goal is to switch the terminology to use control-plane exclusively going forward. (More info in this answer)

            The kubectl command is a command line interface that executes on a client (i.e your computer) and interacts with the cluster through the control-plane. The IP address you are seing through cluster-info is the IP address through which you reach the control-plane

            Source https://stackoverflow.com/questions/67986133

            QUESTION

            Cannot bind PersistentVolumeClaim to PersistentVolume in namespace
            Asked 2021-Jun-15 at 09:52

            I am trying to install jenkins on my kubernetes cluster under jenkins namespace. When I deploy my pv and pvc, the pv remains available and does not bind to my pvc.

            Here is my yamls:

            ...

            ANSWER

            Answered 2021-Jun-15 at 09:52

            Based on the storage class spec, I think the problem is the volumeBindingMode being set as WaitForFirstConsumer which means the PV will remain unbound until there is a Pod to consume it.

            You can change it Immediate to allow the PV to be bound immediately without requiring to create a Pod.

            You can read about the different volume binding modes in detail in the docs.

            Source https://stackoverflow.com/questions/67972725

            QUESTION

            Azure Data Explorer High Ingestion Latency with Streaming
            Asked 2021-Jun-15 at 08:34

            We are using stream ingestion from Event Hubs to Azure Data Explorer. The Documentation states the following:

            The streaming ingestion operation completes in under 10 seconds, and your data is immediately available for query after completion.

            I am also aware of the limitations such as

            Streaming ingestion performance and capacity scales with increased VM and cluster sizes. The number of concurrent ingestion requests is limited to six per core. For example, for 16 core SKUs, such as D14 and L16, the maximal supported load is 96 concurrent ingestion requests. For two core SKUs, such as D11, the maximal supported load is 12 concurrent ingestion requests.

            But we are currently experiencing ingestion latency of 5 minutes (as shown on the Azure Metrics) and see that data is actually available for quering 10 minutes after ingestion.

            Our Dev Environment is the cheapest SKU Dev(No SLA)_Standard_D11_v2 but given that we only ingest ~5000 Events per day (per metric "Events Received") in this environment this latency is very high and not usable in the streaming scenario where we need to have the data available < 1 minute for queries.

            Is this the latency we have to expect from the Dev Environment or are the any tweaks we can apply in order to achieve lower latency also in those environments? How will latency behave with a production environment loke Standard_D12_v2? Do we have to expect those high numbers there as well or is there a fundamental difference in behavior between Dev/test and Production Environments in this concern?

            ...

            ANSWER

            Answered 2021-Jun-15 at 08:34

            Did you follow the two steps needed to enable the streaming ingestion for the specific table, i.e. enabling streaming ingestion on the cluster and on the table?

            In general, this is not expected, the Dev/Test cluster should exhibit the same behavior as the production cluster with the expected limitations around the size and scale of the operations, if you test it with a few events and see the same latency it means that something is wrong.

            If you did follow these steps, and it still does not work please open a support ticket.

            Source https://stackoverflow.com/questions/67982425

            QUESTION

            No StorageClass found in Kubernetes
            Asked 2021-Jun-15 at 06:55

            I am currently setting up a Kubernetes cluster but I noticed there are no default storage classes defined.

            ...

            ANSWER

            Answered 2021-Jun-14 at 18:34

            You need to create the StorageClass object -

            Source https://stackoverflow.com/questions/67974530

            QUESTION

            Grouping Ids based on at least one common values
            Asked 2021-Jun-15 at 05:23

            I have a list whose elements are integers and I would like to accumulate these elements if only they share at least one value. With regard to those elements that don't share any values with the rest I would like them to stay as they are. Here is my sample date:

            ...

            ANSWER

            Answered 2021-Jun-15 at 05:23

            I suspect there's a set covering solution to be had, but in the interim here's a graph approach:

            First, let's convert the integer vectors to an edge list so it can be made into a graph. We can use expand.grid.

            Source https://stackoverflow.com/questions/67970817

            QUESTION

            How to put the input box below the label in dash bootstrap components
            Asked 2021-Jun-15 at 04:51

            What is the right way to put the input box just below the label, not in line with it? I am trying to do this for more than 4 hours but could not able to do it.

            The product-related duration label and the input are perfect and which is what I wanted but it happened luckily because the text is large. How can I do the same with others? I tried some other methods like adding empty spaces or ClassName="form-control" and a bunch of others but nothing working properly, it makes the form too big.

            The code that I am using -

            ...

            ANSWER

            Answered 2021-Jun-15 at 04:07

            If the .form-control style does not work for you, then you could simply add .w-100 to the labels. This should have the same effect as your wider label causing the input to wrap.

            Source https://stackoverflow.com/questions/67974369

            QUESTION

            Pandas how to write parsed data into a text file in a certain format
            Asked 2021-Jun-15 at 04:40

            I am reading an excel file and the parsing some data which i need to dump to the text file.

            I want to create a text file in a certain format and write that into a text file.

            I dont know if we can do that as an input like df[df['Storage Site'].str.contains(input('Please Enter SiteName: '))]

            Below is my dataframe: ...

            ANSWER

            Answered 2021-Jun-15 at 04:40

            I think you are almost close, you Just need to add the variable name's into print statement for your desired output linke below:

            Source https://stackoverflow.com/questions/67970785

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install cluster

            First, install the project as a dependency:.

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