02-27-2011
How can I monitor network in CentOS .5.5 , my application refuse to read sockets
Hi
I have wired problem with one of my applications (servers ) , its suddenly starts to read socket and before it written back , the connection is closed
this is what I see in my logs . is there any took in Linux centos that lets me see what is happening in this time frame ?
9 More Discussions You Might Find Interesting
1. Programming
I am developing a Network Appliation to monitor computers in a network.
Specs are
App monitors the current web page viewed in each system
App also can shutdown the computer in the network
App can show all process run by each computer in the network
I am now confused how to start my... (2 Replies)
Discussion started by: valaparambil88
2 Replies
2. Linux
Hi,
For some reason my network card started going 10Mb/s half duplex instead of 1000Mb/s full duplex. System is connected to 8x1Gb HP switch.
Other devices connect fine through the switch and get full 1Gb network.
I have Centos 5 with all updates. Driver comes from elrepo and as well is... (1 Reply)
Discussion started by: columb
1 Replies
3. Programming
I am trying to make a server and client, the client will choose between some options and the server will react accordingly.
After a some reads and writes that work the server needs to read from client an INT i use this:
read(newSd,&k,sizeof(int));But even if all the other times there was no... (1 Reply)
Discussion started by: theSling
1 Replies
4. AIX
I have configured a custom application monitor with restart count = 3.
say the application has restarted 2 times, if the application fail 2 more times within restart interval, it will failover.
Is there any counter to tell me the recent restart count?
Thanks!! (1 Reply)
Discussion started by: skeyeung
1 Replies
5. Red Hat
I was testing Networking Teaming (activebackup) with a VM hosted on VmWare Workstation and VirtualBox, and the result is, if the active interface is down, the system is not using the backup interface.
Tested on both CentOS / RHEL 7
Please find below the command I have used to configure teaming.... (0 Replies)
Discussion started by: atanubanerji
0 Replies
6. Web Development
Hi All,
Frankly I'm new to Linux Environment. While we are trying to Host an ASP.NET 5 Web Application on Centos OS7 Web hosting Server. There were couple of steps which we are supposed to go through, please see this link -
We are stuck at Create a Container & then Running the Container,... (1 Reply)
Discussion started by: John Fredric
1 Replies
7. Emergency UNIX and Linux Support
Hi all,
I need to add domain and search parameters to resolv.conf, however network manager overwrites.
Setting the PEERDNS=No in the interface file seems to have no effect on this behaviour.
Sadly I cannot just disable NM as these are not my hosts, I'm just attempting to install a platform... (3 Replies)
Discussion started by: Skrynesaver
3 Replies
8. IP Networking
My son does homework on a school laptop. I was thinking about setting up a gateway on my home network, so that I can monitor web traffic and know if he is doing his homework without standing over his shoulder. Ideally I would like to use the Raspberry Pi Model b that I already have. However, I... (15 Replies)
Discussion started by: gandolf989
15 Replies
9. Infrastructure Monitoring
After setting up MQTT and testing some ESP8266 and ESP32 modules, where I noted that testing in Programming ESP32 (ESP-WROOM-32) as an MQTT Client Subscribed to Linux Server Load Average Messages, I was so impressed with MQTT that I installed MQTT on three different computers, instantly and... (2 Replies)
Discussion started by: Neo
2 Replies
LEARN ABOUT CENTOS
radrelay
RADRELAY(8) FreeRADIUS Daemon RADRELAY(8)
NAME
radrelay -- Deprecated command.
DESCRIPTION
The functions of radrelay have been added to radiusd. One benefit is that one instance of radiusd can read multiple detail files, among
others.
The rlm_sql_log module does something similar, but for SQL queries. See it's man page for details.
REPLICATION FOR BACKUPS
Many sites run multiple radius servers; at least one primary and one backup server. When the primary goes down, most NASes detect that and
switch to the backup server.
That will cause your accounting packets to go the the backup server - and some NASes don't even switch back to the primary server when it
comes back up.
The result is that accounting records are missed, and/or the administrator must jump through hoops in order to combine the different detail
files from multiple servers. It also means that the session database ("radutmp", used for radwho and simultaneous use detection) gets out
of sync.
We solve this issue by "relaying" packets from one server to another, so they both have the same set of accounting data.
See raddb/sites-available/buffered-sql for more information.
BUFFERING FOR HIGH-LOAD SERVERS
If the RADIUS server suddenly receives a many accounting packets, there may be insufficient CPU power to process them all in a timely man-
ner. This problem is especially noticable when the accounting packets are going to a back-end database.
Similarly, you may have one database that tracks "live" sessions, and another that tracks historical accounting data. In that case,
accessing the first database is fast, as it is small. Accessing the second database many be slower, as it may contain multiple gigabytes
of data. In addition, writing to the first database in a timely manner is important, while data may be written to the second database with
a few minutes delay, without any harm being done.
See raddb/sites-available/copy-to-home-server for more information.
SEE ALSO
radiusd(8), rlm_sql_log(5)
AUTHOR
The FreeRADIUS Server Project
23 October 2007 RADRELAY(8)