heartbeat | Use Heartbeat to monitor your Hetzner Failover IP | Load Balancing library

 by   mrkamel Ruby Version: Current License: No License

kandi X-RAY | heartbeat Summary

kandi X-RAY | heartbeat Summary

heartbeat is a Ruby library typically used in Networking, Load Balancing applications. heartbeat has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

Heartbeat is a rather simple daemon which pings a Hetzner Failover IP. If the Failover IP is down, Heartbeat will automatically try to set a new active server ip for the Failover IP through the API provided by Hetzner. For further details of Hetzner Failover IPs, please check.

            kandi-support Support

              heartbeat has a low active ecosystem.
              It has 48 star(s) with 13 fork(s). There are 3 watchers for this library.
              It had no major release in the last 6 months.
              There are 4 open issues and 4 have been closed. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of heartbeat is current.

            kandi-Quality Quality

              heartbeat has 0 bugs and 0 code smells.

            kandi-Security Security

              heartbeat has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              heartbeat code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              heartbeat does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              heartbeat 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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            heartbeat Key Features

            No Key Features are available at this moment for heartbeat.

            heartbeat Examples and Code Snippets

            No Code Snippets are available at this moment for heartbeat.

            Community Discussions


            Node.js executing mysql query after receiving message from mqtt broker
            Asked 2022-Mar-28 at 15:08

            I have a node.js file that subscribes to a topic and upon receiving a published message scans a local mysql db for the most recent entry in a variable named "command". Command values will trigger various responses, but I have left this portion out since my issue is before this.

            My mysql query appears to be giving me errors. I am trying to look for the most recent entry of the command column and assign the value to a var command. I thought this code would do the trick:



            Answered 2022-Mar-14 at 00:05

            I am getting the following response which seems to indicate an error in the mysql query

            That's not an error in your MySQL query. It's a null reference error because you're trying to use result outside the callback.

            Changing your code to this will work:

            Source https://stackoverflow.com/questions/71461601


            RabbitMQ Client EventingBasicConsumer stops receiving messages
            Asked 2022-Mar-10 at 21:51

            Using the RabbitMQ.Client v. 6.2.2 I am facing the issue that the EventingBasicConsumer sometimes stops receiving messages if a broker from the cluster fails.

            Looking into the issue I am logging the recovery attempts and they usually work quite well. But this weekend the worker stopped receiving messages again and I am searching for advice how to find which side is at fault. The RabbitMQ Server oder the Client and what to do about it.

            The configuration for the EventingConsumer is pretty much the default with AutomaticRecoveryEnabled=true and heartbeats every 60s + Topology recovery enabled



            Answered 2022-Mar-10 at 21:51

            Please upgrade to version 6.2.4. I fixed a bug that could have caused what you report here.

            NOTE: the RabbitMQ team monitors the rabbitmq-users mailing list and only sometimes answers questions on StackOverflow.

            Source https://stackoverflow.com/questions/70835481


            unable to run client command for apache karaf 4.3.3 through remote server
            Asked 2022-Mar-10 at 16:08

            I have downloaded apache karaf 4.3.3 on several Ubuntu18 machine. When I try to install feature or run any command through client, I get the below log trace. I am able to run the client when I am on the server, but it fails through the script.

            command i'm using are



            Answered 2022-Jan-18 at 21:37

            I came across a similar problem with the script returning a "Closed" status.

            After some tests, I found the script fails when there is no TTY (as is the case if you use tools like ansible)

            You should use the 'batch mode' included in karaf client script, so your command would become:

            Source https://stackoverflow.com/questions/70355095


            SignalR CORS issue with Angular and .NET Core
            Asked 2022-Mar-10 at 08:45

            I know there are a lot of questions and answeres regarding this topic out there, but nothing matched my specific issue.

            I am using the following versions

            • Angular 10.0.14
              • @aspnet/signalr 1.0.27
            • ASP.NET Core 3.1

            VERSION UPDATE:

            • I just replaced @aspnet/signalr 1.0.27 by @microsoft/signalr 5.0.11 -> same issue.

            The SignalR connection works pretty fine until I add an accessTokenFactory in the Angular frontend.




            Answered 2021-Oct-19 at 12:06

            Browsers do not support headers for websockets, therefore the bearer token has to be added as query string parameter. We hit the maximum length for URLs due to the length of our bearer token. We could shorten our token or use a reference token, see also: https://github.com/aspnet/SignalR/issues/1266

            Hope this helps others as well.

            Source https://stackoverflow.com/questions/69628049


            How to share tokio::net::TcpStream on concurrency?
            Asked 2022-Mar-05 at 21:05

            I have a requirement to send and receive normal data on the same TcpStream, while sending heartbeat data at regular intervals. In the current implementation, Arc was used for my purpose, but it compiled with errors. How can these errors be fixed, or is there another way to achieve the same goal?



            Answered 2022-Mar-05 at 20:59

            Several errors in your code, although the idea behind it is almost good. You should use any available tool in async as possible. Some of the needed/desired changes:

            • Use tokio::time::sleep because it is async, otherwise the call is blocking
            • Use an async version of mutex (the one from futures crate for example)
            • Use some kind of generic error handling (anyhow would help)

            Source https://stackoverflow.com/questions/71365810


            Unable to start FastAPI server with postgresql using docker compose
            Asked 2022-Mar-01 at 18:51

            I am creating a FastAPI server with simple CRUD functionalities with Postgresql as database. Everything works well in my local environment. However, when I tried to make it run in containers using docker-compose up, it failed. I was getting this error:



            Answered 2021-Sep-29 at 20:31

            First, the SQLALCHEMY_DATABASE_URI in database.py should match the user, password and database name suplied in Your docker-compose.yaml. Ensure that You are running docker-compose up with correct environ. In Your case, the environ for docker-compose up should be:

            Source https://stackoverflow.com/questions/69381579


            RabbitMQ, Celery and Django - connection to broker lost. Trying to re-establish the connection
            Asked 2021-Dec-23 at 15:56

            Celery disconnects from RabbitMQ each time a task is passed to rabbitMQ, however the task does eventually succeed:

            My questions are:

            1. How can I solve this issue?
            2. What improvements can you suggest for my celery/rabbitmq configuration?

            Celery version: 5.1.2 RabbitMQ version: 3.9.0 Erlang version: 24.0.4

            RabbitMQ error (sorry for the length of the log:



            Answered 2021-Aug-02 at 07:25

            Same problem here. Tried different settings but with no solution.

            Workaround: Downgrade RabbitMQ to 3.8. After downgrading there were no connection errors anymore. So, I think it must have something to do with different behavior of v3.9.

            Source https://stackoverflow.com/questions/68602834


            What is the best way to access historical price data from Chainlink on a token in a decentralised manner?
            Asked 2021-Dec-17 at 22:55

            I need to get the Chainlink prices of a token from a specific time to the most recent round. This time varies based on user input but will be relatively short windows (1 day to 2 weeks max) based on the heartbeat of the token. This is used to calculate the price of a payout both in the smart contract and on the application homepage.

            To get historical price data Chainlink needs a 'roundId' which is a non-incremental value.

            What is the best way to either get all roundIds for the given time window from Chainlink or record them in a way that is open, decentralised and can be accessed in a solidity smart contract?



            Answered 2021-Dec-17 at 22:55

            Each proxy contract for a Chainlink Price Feed can have multiple underlying aggregator contracts, with one of them being set as the 'active' one at any given instance. Ie whenever the Chainlink Labs team deploys new versions of the aggregator, they update the proxy contract to set the current aggregator version to be the new one, and all new price data starts getting written to the new aggregator.

            Based on this, if you want historical price data for a proxy contract/price pair from the last couple weeks or so, you'd need to go to the current aggregator for the proxy contract, then get the current round info (including timestamp), then go back in aggregator rounds in a loop until you get to a round that is less than your search parameter timestamp.

            To find the current aggregator contract address for a proxy contract, you can call the aggregator getter function in the proxy contract.

            The phase ID can be thought of as an incrementing ID number that the proxy contract uses to identify each aggregator as it gets added to the proxy, so the first one is 1, second is 2 etc. To find out what the current phase ID is of the current aggregator, you can use the phaseId getter function in the proxy contract.

            Aggregator round IDs start from 1 and increase by 1 each time. Eg you can use the aggregator latestRound getter function to find the last round that it stored, and then start from that number as an input parameter to getRoundData, and then reduce the number by one and loop through until you reach your point in time.

            Unlike Aggregator round IDs, proxy round IDs are those big really long numbers like 36893488147419113293, and are actually just a derived value based on the aggregator phase ID and the aggregator round ID. This is done to ensure the proxy round IDs are always increasing in value, and that there will never be any overlap between the same rounds across different aggregators, eg round 5000 from aggregator with phase ID 1 should have a lower proxy round ID that round 5000 from aggregator with phase ID 2

            In Solidity you can easily replicate the proxy round ID derived value with the following formula, passing in the phase ID of the aggregator and the aggregator round ID

            Source https://stackoverflow.com/questions/70377502


            What could cause a NoClassDefFoundError on one specific system only?
            Asked 2021-Dec-14 at 11:51

            I'm currently working on a desktop application using Swing, communicating with a server over HTTPS. However, on one production machine which I will have to support, the current development build throws a NoClassDefFoundError despite the class being actually included in the JAR.

            The situation is quite simple: I'm starting up the Swing application and configure a server to contact, which will then be used for a quick HTTPS connection test (in the class HTTPClient). I facilitate OkHttp for all communication with the server.

            My HTTPClient resembles this code:



            Answered 2021-Dec-14 at 11:51

            In my case, since I had set a timeout of 1,500 milliseconds on the future and because of the slower CPU clock speed of the misbehaving machine, the class was not fully initialised when the timeout occurred. Turns out, OkHttp is more or less the culprit, it takes more than 5 seconds to inistalise the client on the given machine.

            All in all, I am no longer applying any timeout on the first try of the connection test to give OkHttp enough time to initialise itself.

            Note that this would not solve the problem if the initialisation of the HTTPClient was to fail at a different point in the application lifecycle. But since the first try of the connection test is the first place to call into HTTPClient, this is the only place where it can be initialised.

            Source https://stackoverflow.com/questions/70339467


            Ping Tasks will not complete
            Asked 2021-Nov-30 at 13:11

            I am working on a "heartbeat" application that pings hundreds of IP addresses every minute via a loop. The IP addresses are stored in a list of a class Machines. I have a loop that creates a Task (where MachinePingResults is basically a Tuple of an IP and online status) for each IP and calls a ping function using System.Net.NetworkInformation.

            The issue I'm having is that after hours (or days) of running, one of the loops of the main program fails to finish the Tasks which is leading to a memory leak. I cannot determine why my Tasks are not finishing (if I look in the Task list during runtime after a few days of running, there are hundreds of tasks that appear as "awaiting"). Most of the time all the tasks finish and are disposed; it is just randomly that they don't finish. For example, the past 24 hours had one issue at about 12 hours in with 148 awaiting tasks that never finished. Due to the nature of not being able to see why the Ping is hanging (since it's internal to .NET), I haven't been able to replicate the issue to debug.

            (It appears that the Ping call in .NET can hang and the built-in timeout fail if there is a DNS issue, which is why I built an additional timeout in)

            I have a way to cancel the main loop if the pings don't return within 15 seconds using Task.Delay and a CancellationToken. Then in each Ping function I have a Delay in case the Ping call itself hangs that forces the function to complete. Also note I am only pinging IPv4; there is no IPv6 or URL.

            Main Loop



            Answered 2021-Nov-26 at 08:37

            There are quite a few gaps in the code posted, but I attempted to replicate and in doing so ended up refactoring a bit.

            This version seems pretty robust, with the actual call to SendAsync wrapped in an adapter class.

            I accept this doesn't necessarily answer the question directly, but in the absence of being able to replicate your problem exactly, offers an alternative way of structuring the code that may eliminate the problem.

            Source https://stackoverflow.com/questions/70097065

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


            XHA (Linux-HA) on the BlueCat Networks Adonis DNS/DHCP Appliance allows remote attackers to cause a denial of service (heartbeat control process crash) via a UDP packet to port 694. NOTE: this may be the same as CVE-2006-3121.
            Multiple cross-site scripting (XSS) vulnerabilities in the Heartbeat module 6.x before 6.x-4.9 for Drupal allow remote authenticated users to inject arbitrary web script or HTML via unspecified vectors.

            Install heartbeat

            Heartbeat is written in ruby. Thus, you first have to install ruby, rubygems and bundler.


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