The following tables list the critical log messages from controller.log and balancer.log files. Note that balancer.log file is not rotated while controller.log file is rotated evevy 24-hours. For more information on ASE logs, see ASE management, access and audit logs

controller.log mesaages:
Log message Description
unknown cluster uuid This message is logged in controller.log when a ASE node with a different cluster ID or secret key tries to join an ASE cluster. For more information, see Start ASE cluster
resolve error This message is logged in controller.log when ASE is not able to resolve ABS or server hostname
connect error This message is logged in controller.log when ASE is not able to connect to ABS or a server.
handshake error This message is logged in controller.log when connection to ABS or server because of problems in SSL handshake.
error while sending message to lb connection This message is logged in controller.log when there is a IPC connection failure between ASE's controller and balancer modules.
error while reading message from lb connection This message is logged in controller.log when there is a IPC connection failure between ASE's controller and balancer modules
License file <license file path> is expired. Please renew your license This message is logged in controller.log when PingIntelligence license has expired. For more information, see ASE license.
Unexpected Error This message is logged in controller.log when ASE's controller module is unavailable. This is a fatal error.
info | event | event type : <event type>

event value : <value of event>
The following events are logged logs even if email alert is not enabled:
  • Cluster node up
  • Cluster node down
  • server state changed to Up
  • server state changed to Down
  • log upload service failed
  • error while uploading log file

If email_alert is enabled, then all events will be available in logs. Fore more information, see Email alerts and reports
api memory limit reached. total number of cookies dropped <count> This message is logged in controller.log when ASE is dropping cookies because of low API memory. For more information, see api_memory_size in Defining an API using API JSON configuration file in sideband mode-Not in use for 5.1
stopping API Security Enforcer This message is logged in controller.log when ASE stops.
API Security Enforcer started This message is logged in controller.log when ASE starts.
balancer.log
Log message Description

/bin/bash: line 0: echo: write error: Permission denied

/bin/bash: line 0: echo: write error: Permission denied
| warn | process_id : process_id_number | tcp_fe | !!!! low memory : connection dropped due to low memory !!!! This message is logged in controller.log when ASE is runnig low on memory because of which ASE drops the client connections.