My Ubuntu server Load and memory dropped suddenly. I am unable to find any exception in system logs and other logs. Its a glusterFS server, also it got disconnected from the cluster.
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The mongoDB service shuts down every 24 hours or so and despite having the error response in windows service set to restart it will shutdown and remain offline. I also have only found 1 log and the log itself seems to state that the windows service manager is the one shutting it down.
Ive mainly tried to get windows to automatically restart it, however that did not change a thing.
Can anyone help me in making a bigchaindb network with 3 nodes.I tried and created network by following http://docs.bigchaindb.com/projects/server/en/latest/simple-deployment-template/network-setup.html this link .After running monit process on each node iam getting panic error initializing db resource temporarily unavailable.But i can see mongodb status as active and bigchain db has been created.
I have some dotnet core applications running as microservices into GKE (google kubernetes engine).
Usually everything work right, but sometimes, if my microservice isn't in use, something happen that my application shutdown (same behavior as CTRL + C on terminal).
I know that it is a behavior of kubernetes, but if i request application that is not running, my first request return the error: "No such Device or Address" or timeout error.
I will post some logs and setups:
The key to what's happening is this logged error:
TNS: Connect timeout occured ---> OracleInternal.Network....
Since your application is not used, the Oracle database just shuts down it's idle connection. To solve this problem, you can do two things:
Handle the disconnection inside your application to just reconnect.
Define a livenessProbe to restart the pod automatically once the application is down.
Make your application do something with the connection from time to time -> this can be done with a probe too.
Configure your Oracle database not to close idle connections.
I have a 5 cluster MariaDB/Galera cluster running in production environment.
I also have a monitor which checks every 20 seconds for cluster size changes. One of our other engineers has been running queries using MySQL Workbench, and when that application is running, I start seeing alerts coming from my monitor where cluster size is 1. It does recover in a few seconds back to the correct size of 5, however it's disconcerting that this client app is causing issues on the cluster. I've requested everyone on our team to not use this app... however I wonder if anyone else has seen this, or knows what it is doing to the cluster.
Around 15 processes were inserting/updating unique entries in Cassandra. Everything was working fine but after sometime I get this error.
(When I restart the process everything is fine again till sometime)
An attempt was made to connect to each of the servers twice, but none
of the attempts succeeded. The last failure was TTransportException:
Could not connect to 10.204.81.77:9160
I did CPU/Memory Analysis of all the Cassandra machines. CPU usage sometimes goes around 110% and Memory Usage was between 60% - 77%. Not sure if this might be the cause, as it was working fine with such memory and cpu usage most of the time.
p.s.: How to ensure Cassandra update/insertion works error free?
Cassandra will throw an exception if anything goes wrong with your inserts; otherwise, you can assume it was error free.
Connection failures are a network problem, not a Cassandra problem. Some places to start: is the Cassandra process still alive? Does netstat show it still listening on 9160? Can you connect to non-Cassandra services on that machine? Is your server or router configured to firewall off frequent connection attempts?