I deployed 3 Kaa clusters follow the kaa Cluster setup guide document.
The databases are MongoDB and MariaDB. When I run C Client(I make a code change that every client can login in three kaa servers in random) firstly, it can login in kaa server and send or receive event.
But after I stop the Client and start it secondly, it can not send or receive event.
Then I try to do it again and again. But almost it is bad. I will upload the server log and the Client log .
The error maybe caused by kaa cluster.
I generated a Java and Android Client SDK.The problem would also take place while I run Java and Android Client .
Related
I have an elastic apm server version 7.17.1. There are only to Django application on the server. The APM service is using about 140MB of memory. When connecting new agents, I receive a timeout error.
node.js error
{"log.level":"error","#timestamp":"2022-07-07T23:15:34.033Z","log":{"logger":"elastic-apm-node"},"ecs":{"version":"1.6.0"},"message":"APM Server transport error: intake response timeout: APM server did not respond within 10s of gzip stream finish"}
Java error
2022-07-07 14:31:36,503 [elastic-apm-server-reporter] ERROR
co.elastic.apm.agent.report.IntakeV2ReportingEventHandler - Error
sending data to APM server: Read timed out, response code is -1
If I use flask or Django or PHP, new apps are registered.
(I couldn't find logs from Go, but that APM agent failed as well.)
APM server logs did not appear relevant as the errors occurred in both instances
Check your IPS. In our env, we saw the IPS swatting down packets from Java and Go-based apps. I'm no developer, but once we got those sources white-listed, we saw the Agents information coming through :)
I deployed my java web application on Bluemix Dedicated environment and use it with Cloudant Dedicated NoSql DB. In this DB i tried to return 60k documents and server returned
500 Error: Failed to establish a backside connection
to me. So i'm wondering about connection timeout in Bluemix, there're posts where people claim that Bluemix resets a network connection in 120 if there's no response received. Is it possible to change this setting, or maybe someone knows how to solve such problem.
P.S. When I deploy it on my computer then it works fine, but of course it takes some time. Particularly this case may be solved using cloudant pagination, but i develop service for scheduling REST-calls and if bluemix reset all connections after 2 minutes i'll have a big problems with it.
Not sure which Bluemix Dedicated you are using, but the timeout is typically global. Paging would work and I thinking a websocket based approach would work as well.
-r
My play framework web application sends automatically emails to user using Apache commons email library, everything works fine on my machine, but when I deploy it on an Ubuntu server it is unable to send email.
It throws exceptions like org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.googlemail.com:465 (I also tried different configuration with smtp.google.mail port 465,25 and 587 with or without ssl and tls)
and connection timed out.
I starting to believe that is a problem of some configuration of my ubuntu server.
Any suggestion?
If i type ufw status command I receive status disabled.
Thanks
I am going to close this question, because I found the solution. Basically my Server provider (Scaleway) has a security configuration where SMTP is blocked. I asked them to unlock It.
I am having some issues with the MeteorJs app that I am working on. I am working for a client and we are using his dedicated server for our app's deployment. The server has php installed and is already running apache server (a php app is live on server). The server itself is running a version of CentOS.
I bundled my meteor app and uploaded it on server using my cPanel access (it is not root level access). I also created an ssh key and logged into the server using that ssh access.
I used export command to set my MONGO_URL to mongodb://localhost:27017/<db-name> (Version 2.6.3 of MongoDB in installed on server) and PORT to 3000. From here I ran the app using node package "pm2".
Now the issue is that when the app runs it accesses the database for data.
The request is made from client side.
The server receives the request (seen in the live log)
The server fetches data from db and logs it in the terminal.
But then it takes somewhere around 10-15 seconds to send that data back to the client.
There is not extra commands or computation between logging the data fetched from server and returning it to client.
But if I change the mongo URI to my instance of MongoLab, everything works fine and there are no delays. My client prefers that the mongo runs on his dedicated server.
As a programmer I know it would be difficult to answer this question with limited information and no hands-on debugging. But I was hoping someone else experienced this issue and was able to resolve. I just installed mongodb on the server without any further configurations. Is it that I need to install any further packages or do any configurations?
you need to set MONGO_OPLOG_URL to enable oplog tailing feature. when oplog tailing is disabled it takes around 10-15 seconds to send that data to the client.
export MONGO_OPLOG_URL like this.
MONGO_OPLOG_URL=mongodb://localhost/local
I have WAS MQ 7.1 Server installed in windows. My application running on unix is trying to connect to this server during which it gives the error "MQ Connect failed 2195" in the application logs. On debugging the code , i found it is while connecting to the q manager that it is throwing this error.
I tried to run a netstat on the MQ Server port no. and do a telnet to check if there is any connection being established . But I could not see any connection being established to the q manager .
The possible issues could be
1. Que Manager has not been started
2. Listener not started
3. Initiation queue not started or created or attached(usually optional depending on set up)
4. Listening to the wrong Port or IP
5. Firewall stopping traffic to Port or IP
6. Queue Manager not created on destination
7. Not authorized to Queue manager and/or channel and/or queue
8. Trial MQ copy expired.
9. Wrong Queue manager name
10. Wrong channel name or password or queue or queue type
Have done the following to check if it is working fine .
1. Tried to put a message from windows to the MQ Server which was successful.
2. Gave auth(setmqaut) permission to Request queue that was created.
3. There is no firewall between application and MQ Server.
4. Channel name , q manager , IP and port no.s are correct.
In my windows MQ Setup i have created the Server connection channel and Client connection Channel.
export the mqm lib to SHLIB_PATH.
Added the application user to mqm group and also the windows user through which I had created the MQ Server setup
Had copied the AMQCLCHL.TAB to the unix machine containing the client program.
exported MQCHLTAB to the table filename
exported MQCHLLIB to the path containing the table name
exported the MQSERVER=QMgrName/CHANNEL1/hostname from the client machine.
Please let me know if I am missing anything w.r.t connection of the application(in Unix) to the MQ Server(in Windows).
2195 is MQRC_UNEXPECTED_ERROR. It implies something that should not have happened, even if you set it up wrong. It may well be accompanied with an FDC file in the errors directory. You should raise a PMR with IBM Service.