Single request troubleshooting
1. Capture client-side request packets
Generally, Charles (recommended) or Fiddler tool is used to capture client-side packets. With the packet capture tool, you can find some critical data of the RPC requests.
Here is an example of packet capture:
Example of request header:
Example of response header:
2. Query MGS log by TraceId
Obtain Mgw-TraceId from the response header.
In mPaaS console, select the target App, go to the Mobile Gateway > Manage gateway> Tools > Trace analysis page, and enter the TraceId to parse the corresponding MGS server IP and processing time of the request.
Connect MGS server through SSH, and then query the request-related logs by TraceId.
ssh -p2022 log@#ip# Account: log/mpaas123456 cd /home/admin/logs/gateway grep #traceid# *.log
Cluster GREP troubleshooting (for private cloud only)
Sometimes, you may need to search a certain log in MGS cluster. At this time, you can use the open-source PSSH tool.
Download PSSH tool.
Export the server IP list of MGS from Gamma platform to
mgs_host.txtfile, for example:
firstname.lastname@example.org:2022 email@example.com:2022 firstname.lastname@example.org:2022
Run the following command:
pssh -i -h mgs_host.txt -A -P 'grep "xxxx" /home/admin/logs/gateway/xxx.log'