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现象:
项目采用分布式应用,总共三台服务器,第一台的某个应用无法访问报错Error: Service Layer is under maintenance,第二三台可以正常访问 -
问题排查:
通过排查ETW(无任何报错)和EventLog发现有报错如下
Application pool xxx has been disabled. Windows Process Activation Service (WAS) encountered a failure when it started a worker process to serve the application pool.
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问题解决:
修改log中所示Application pool的identity(重置密码),问题解决