varlogmessage 日志解释 python 2023-04-23T163426471290Z INFO ExtHandler ExtHandler HEARTBEAT Agent WALinuxAgent-2706 is running as the goal state agent DEBUG HeartbeatCounter 18993;HeartbeatId 4A2D7059-2BC

This message is a log entry that provides information about the status of the "ExtHandler" (Extension Handler) component in the Linux virtual machine agent (WALinuxAgent) running on the system. The log entry includes the following details:

• Date and time stamp: "2023-04-23T16:34:26.471290Z"
• Log level: "INFO"
• Source component: "ExtHandler"
• Log message: "[HEARTBEAT] Agent WALinuxAgent-2.7.0.6 is running as the goal state agent"
• Debug information: "HeartbeatCounter: 18993;HeartbeatId: 4A2D7059-2BCB-40C8-B7A5-C1B52AA64B5D;DroppedPackets: 0;UpdateGSErrors: 0;AutoUpdate: 1"

The "HEARTBEAT" keyword in the log message indicates that this entry is related to the periodic heartbeat messages sent by the agent to the Azure Fabric Controller to report its status. The "goal state agent" refers to the desired state of the VM that is defined by the Azure Resource Manager template or other configuration settings. The debug information provides additional details about the heartbeat, including the counter, ID, dropped packets, update errors, and auto-update settings.

This log entry is stored in the "/var/log/messages" file, which is a system log file that contains various messages from the Linux kernel, system services, and applications running on the system