集成了公司的SSO认证，一直工作正常，临时断电，重启PC后。服务正常启动，但服务时走认证流程时提示——Failed to obtain access token，搜索对应的问题，找到InternalOAuthError: Failed to obtain access token
InternalOAuthError: Failed to obtain access token
at Strategy.OAuth2Strategy._createOAuthError (/home/stf/RemoteDeviceNew/node_modules/passport-oauth2/lib/strategy.js:410:17)
at /home/stf/RemoteDeviceNew/node_modules/passport-oauth2/lib/strategy.js:177:24
at /home/stf/RemoteDeviceNew/node_modules/oauth/lib/oauth2.js:191:18
at ClientRequest.<anonymous> (/home/stf/RemoteDeviceNew/node_modules/oauth/lib/oauth2.js:162:5)
at emitOne (events.js:116:13)
at ClientRequest.emit (events.js:211:7)
at TLSSocket.socketErrorListener (_http_client.js:401:9)
at emitOne (events.js:116:13)
at TLSSocket.emit (events.js:211:7)
at emitErrorNT (internal/streams/destroy.js:66:8)
at _combinedTickCallback (internal/process/next_tick.js:139:11)
at process._tickCallback (internal/process/next_tick.js:181:9)
看起来是相同的问题，直接采用require('https').globalAgent.options.rejectUnauthorized = false;问题依然复现。
在node_modules/passport-oauth2/lib/strategy.js文件中添加debug信息，重启服务后提示——getaddrinfo ENOTFOUND，看起来是无法找到SSO服务器。从STF所在的机器ping此地址（断电重启的原因？）尝试先在/etc/hosts中添加解析地址。搞定~
Failed to obtain access in======== token: { Error: getaddrinfo ENOTFOUND sso.test-sso.com sso.test-sso.com:443
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:67:26)
errno: 'ENOTFOUND',
code: 'ENOTFOUND',
syscall: 'getaddrinfo',
hostname: 'sso.test-sso.com',
host: 'sso.test-sso.com',
port: 443 }
