Heartbeat (as of version 3.x) is a cluster messaging layer, often combined with pacemaker as the cluster resource manager.
A detailed explanation, including historical notes, can be found at: http://www.linux-ha.org/wiki/Heartbeat
Questions tagged [heartbeat]
262 questions
0
votes
0 answers
How to stop sending Heartbeat message of a DataNodeto to the NameNode?
How to stop sending Heartbeat message of a DataNode or a specific DataNode to the NameNode? I know DataNode sends a Heartbeat every 3 seconds once and after 10 minutes, if DataNode will not send a message, it will be removed from the network.
Is…
mng97
- 75
- 9
0
votes
0 answers
netty channel close failed in userEventTriggered invoke
netty 4.1.6:
the server triggers an IdleStateEvent every 30 seconds but never call the channelInactive method. Last for a long time.
and the server side too many CLOSE_WAIT
LAST_ACK 10
CLOSE_WAIT 3708
ESTABLISHED 7
public void…
peng lei
- 1
0
votes
1 answer
Elastic search + Heartbeat - Is it possible to check if java app is running?
Is it possible to check if java application (standard "main function" app, not web app) is running with Heartbeat (https://www.elastic.co/products/beats/heartbeat) ?
user2455862
- 585
- 10
- 26
0
votes
1 answer
What is the average size of an Elastic Beat, ElasticSearch document?
I currently do a small research to know what kind of server I need.
Currently the only thing (for now) I need to calculate the average size of an Elastic Beat.
The Beats I will use are:
Metric Beat
(System data, Nginx, MySQL and Apache)
Heart…
Jeroen
- 147
- 1
- 12
0
votes
1 answer
Heartbeat to check if a user is authenticated?
Googling for heartbeat authentication gives so much info that inst related that makes it hard to find good sources.
In short terms what a heart beat authentication is ?
In what cases could would it be more applied to be used ?
I am sorry that this…
Guapo
- 3,446
- 9
- 36
- 63
0
votes
1 answer
Open BLE sensors tracking heartrate?
I have trouble finding devices from the market that send live data of heartrate via bluetooth.
Getting SDKs from big companies is a tedious task, and therefore I need just a simple device, which is possible to pair to native Android or to Unity via…
Gideons
- 145
- 1
- 4
- 13
0
votes
1 answer
send heartbeart by calling a jsp doesn't keep session alive
I want to keep session alive when I open web page on browser even if I doesn't touch it for a long time, this is how I try to do:
on server side (tomcat), session timeout set to 8 mins.
main jsp generates a html. In this html, I use timer & ajax…
balmydrizzle
- 11
- 1
- 4
0
votes
0 answers
Destroy spring session after tab or browser close
I have a requrement to destroy session after 30 seconds of tab/browser close and logout user. If new tab or new window access my website URL, after 30 second it should redirect to login page other wise dashboard should be shown.
There are many…
Saurabh Kumar
- 19
- 1
- 5
0
votes
1 answer
Heartbeat refresh browser when page is updated
I am trying to automatically force a browser refresh on a specific page when the page is beeing updated in the backend. I'm trying to achieve by using the Heartbeat API.
I look through all Heartbeat examples i could find but I can't grasp the whole…
Horst Otto
- 20
- 4
0
votes
1 answer
Data handling on multiple Heart rate files
I have been collecting the Heart rates of 12 calves who each received an anesthetic through four different routes of administration. I now have 48 txt files of this format:
Time HRbpm
0:00:01.7 97
0:00:02.3 121
0:00:02.8 15
... …
0
votes
0 answers
How can I get heart rate data (continuous measurement) from MiBand 2 in my own app?
I'm developing an android application that needs to get the user's heart rate instantly for analysis. I have a Xiaomi MiBand 2 and would like to use it as data source.
I found several codes in GitHub for applications that connect and get data from…
Eduardo
- 1
- 1
0
votes
1 answer
Adding RadioHead library to Arduino sketch
I am working on a project to use Arduino heart rate pulse wirelessly. My issue is when I add the RadioHead library to the existing generic heart pulse code; it is conflicting.
To be precise, it is conflicting with the interrupt section only. I read…
0
votes
2 answers
Prevent HeartbeatServlet from writing nullpointer exception to log
I have the following code:
HeartbeatServlet.java:
public final void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
HttpSession session = request.getSession(false);
…
M. Winnicki
- 65
- 8
0
votes
1 answer
Pacemaker: adding custom resource
I am trying to create an HA cluster with Pacemaker on CentOS7.
One of the required resources is a custom service. I have an LSB-compliant init script that I have put into /etc/init.d, and I have it listed when running:
pcs resource agents…
Mark Kemel
- 506
- 6
- 12
0
votes
0 answers
Failed dependencies when installing heartbeat on RHEL 6.8
**Description of problem:
Failed dependencies when installing heartbeat on RHEL 6
Version-Release number of selected component (if applicable):
Cannot install heartbeat on RHEL 6.
Failed dependencies on libplumbgpl.so.2 and cluster-glue.
I have also…
Vishnu Gopal Singhal
- 111
- 2
- 9