Topic: how to collect the logs?

The content of this topic has been archived on 3 May 2018. There are no obvious gaps in this topic, but there may still be some posts missing at the end.

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Post #1

ac@wrt

16 Nov 2016, 11:54

am using Chaos Calmer and syslog not working. I need to send the log file from my router to cloud. So kindly help to collect the logs from openwrt .

Post #2

dl12345

16 Nov 2016, 14:12

Luci --> System --> System
Click on the Logging tab
Specify the remote syslog server IP address and port
Save and apply

Post #3

ac@wrt

16 Nov 2016, 14:23

Thanks dl....i plan to send the log file from the router to cloud. So following script will create a log file(AP_logs), so that i can post it to cloud, is that possible?

#!/bin/sh

uci set system.@system[0].log_size=4096
uci set system.@system[0].log_type=file
uci set system.@system[0].cronloglevel=5
uci set system.@system[0].log_file= /etc/AP_Logs
uci set wireless.radio0.log_level=1
uci commit system
uci commit wireless

exit 0

Post #4

dl12345

17 Nov 2016, 10:41

ac@wrt wrote:

Thanks dl....i plan to send the log file from the router to cloud. So following script will create a log file(AP_logs), so that i can post it to cloud, is that possible?
#!/bin/sh
uci set system.@system[0].log_size=4096
uci set system.@system[0].log_type=file
uci set system.@system[0].cronloglevel=5
uci set system.@system[0].log_file= /etc/AP_Logs
uci set wireless.radio0.log_level=1
uci commit system
uci commit wireless
exit 0

No, no, no.

Why are you trying to log to /etc? The correct place is /var/log

The method I described sends log messages using the UDP syslog protocol to a remote syslog server. It DOES NOT upload files to some cloud drive. There is not out-of-the-box solution for uploading files to a cloud drive.

Get a USB memory stick. Format it with an ext4 file system. Mount it somewhere (/var is probably the best place, but you will first need to delete the symbolic link from /var to /tmp/var, then create a /var folder, then mount the USB on /var). Once you have a USB installed and mounted on /var then write the logs to /var/log

If you want easy access from a Windows PC you can install Samba and share the USB drive using Samba

https://wiki.openwrt.org/doc/recipes/us … binterface

Post #5

ac@wrt

17 Nov 2016, 12:19

Oh..Ok....is it possible to port "AWS SDK for C++" in openwrt code.....so that i can send some logs to aws-cloud....

Post #6

dl12345

17 Nov 2016, 12:33

If it is Linux based then it can be compiled for OpenWrt. You'll need to download the OpenWrt SDK and do a lot of reading to understand how the buildroot environment works.

Saying this in the nicest possible way, your questions so far indicate that you have a lot of learning to do before you would be able to cross-compile a new package for OpenWrt. If you cannot compile a normal package on a standard Linux system, then you have almost no chance of being able to cross-compile a package for OpenWrt.

You will also need to understand exactly how Linux systems and OpenWrt work, and for this you should read the wiki articles that explain the system layout.

I suggest starting with the following wiki articles:

https://wiki.openwrt.org/doc/howto/obtain.firmware.sdk
https://wiki.openwrt.org/doc/howto/buildroot.exigence
https://wiki.openwrt.org/doc/howto/build

Post #7

webtron

17 Nov 2016, 22:25

If you don't have a remote syslog server you could try sshfs to mount a remote directory. I was playing around with this a while back for other purposes.

mkdir /tmp/mount
echo password | sshfs user@my.aws.com:/var/log/ /tmp/mount -o workaround=rename -o password_stdin

#used with reconnect to keep sshfs tunnels open
echo 'ServerAliveInterval 15' >>/etc/ssh/ssh_config
echo 'ServerAliveCountMax 3' >> /etc/ssh/ssh_config

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