使用部署密钥的某些SSH连接失败

2026年7月21日，在07:41 UTC至11:57 UTC期间，SSH认证服务出现降级，部分SSH连接认证失败。平均有12.2%的SSH认证请求失败，峰值达到15.7%。用户RSA密钥和部署密钥均受到影响。这是由于我们的SSH服务在处理一种公钥认证方式时的变更，导致受影响的认证尝试被错误地拒绝为无效。<br /><br />我们通过回滚该变更来缓解此事件，之后SSH认证恢复正常。<br /><br />我们正在努力扩展SSH公钥认证流程的自动化测试覆盖范围，以捕获更多边缘情况，并改进SSH认证失败的观测性和告警机制，从而减少未来类似问题的检测和缓解时间。

原文On July 21, 2026, between 07:41 UTC and 11:57 UTC, the SSH Authentication service was degraded and some SSH connections failed to authenticate. On average, 12.2% of SSH authentication requests failed, peaking at 15.7%. Both user RSA keys and deploy keys were impacted. This was due to a change in how our SSH service handled one public-key authentication method that caused the affected authentication attempts to be rejected as invalid. <br /><br />We mitigated the incident by reverting the change, after which SSH authentication returned to normal. <br /><br />We are working to expand our automated test coverage for our SSH public-key authentication flows to catch more edge cases and to improve observability and alerting on SSH authentication failures, to reduce our time to detection and mitigation of issues like this one in the future.

我们已确定最近的一次代码变更是导致部署密钥连接出现SSH认证失败的可能原因。我们的工程团队正在回滚此变更。使用部署密钥通过SSH访问仓库的客户，在修复部署完成前，可能仍会间歇性地遇到连接失败问题。

原文We have identified a recent code change as a potential cause of the SSH authentication failures affecting deploy key connections. Our engineering team is rolling back this change. Customers using deploy keys for SSH access to repositories may continue to experience intermittent connection failures until the fix is deployed.

我们正在调查影响使用部署密钥连接时出现的间歇性SSH认证失败报告。客户通过部署密钥与仓库交互时，可能会遇到SSH连接失败的情况。我们的工程团队正在积极调查根本原因，并致力于解决问题。

原文We are investigating reports of intermittent SSH authentication failures affecting connections that use deploy keys. Customers may experience failed SSH connections when interacting with repositories via deploy keys. Our engineering team is actively investigating the root cause and working toward resolution.

我们正在调查部分GitHub服务性能受影响的相关报告。

原文We are investigating reports of impacted performance for some GitHub services.