记一次服务器时间不同步导致的gitlab集群服务报错
正在运行的gitlab集群突然抽风，具体故障现象如下。
环境信息：gitlab部署在k8s集群内，采用官方helm包部署，gitlab版本为14.10.x。
故障现象：项目相关的操作有几率报错
- 新建：创建项目有几率失败，并报错
- 查看项目：进入项目内，有几率刷不出代码树，并报错，报错信息
An error occurred while fetching folder content. - 删除项目：项目删不掉
查看Gitaly服务的日志，发现是Praefect服务调用Gitaly的健康检查接口报错，错误关键信息为 PermissionDenied。
{"correlation_id":"01G7BX3DR59H35EYHPMKHNVBC0","error":"rpc error: code = PermissionDenied desc = permission denied","grpc.code":"PermissionDenied","grpc.meta.auth_version":"v2","grpc.meta.deadline_type":"unknown","grpc.meta.method_type"
:"unary","grpc.method":"Check","grpc.request.deadline":"2022-07-07T08:39:54.207","grpc.request.fullMethod":"/grpc.health.v1.Health/Check","grpc.request.payload_bytes":0,"grpc.response.payload_bytes":0,"grpc.service":"grpc.health.v1.Healt
h","grpc.start_time":"2022-07-07T08:39:53.208","grpc.time_ms":0.285,"level":"warning","msg":"finished unary call with code PermissionDenied","peer.address":"10.42.1.134:51266","pid":12,"span.kind":"server","system":"grpc","time":"2022-07-07T08:39:53.208Z"}
{"correlation_id":"01G7BX3EQJZJFT996MD2KF2HXW","error":"rpc error: code = PermissionDenied desc = permission denied","grpc.code":"PermissionDenied","grpc.meta.auth_version":"v2","grpc.meta.deadline_type":"unknown","grpc.meta.method_type":"unary","grpc.method":"Check","grpc.request.deadline":"2022-07-07T08:39:55.212","grpc.request.fullMethod":"/grpc.health.v1.Health/Check","grpc.request.payload_bytes":0,"grpc.response.payload_bytes":0,"grpc.service":"grpc.health.v1.Health","grpc.start_time":"2022-07-07T08:39:54.213","grpc.time_ms":0.201,"level":"warning","msg":"finished unary call with code PermissionDenied","peer.address":"10.42.1.134:51266","pid":12,"span.kind":"server","system":"grpc","time":"2022-07-07T08:39:54.213Z"}
*** /var/log/gitaly/gitaly_ruby_json.log ***
{"type":"gitaly-ruby","grpc.start_time":"2022-07-07T08:39:53Z","grpc.time_ms":0.286,"grpc.code":"OK","grpc.method":"Check","grpc.service":"grpc.health.v1.Health","pid":35,"correlation_id":"c486ca8b2bbc3eb6736d533c38cf6017","time":"2022-07-07T08:39:53.642Z"}
{"type":"gitaly-ruby","grpc.start_time":"2022-07-07T08:39:53Z","grpc.time_ms":17.012,"grpc.code":"OK","grpc.method":"Check","grpc.service":"grpc.health.v1.Health","pid":36,"correlation_id":"71bff8c80424d633989f5daeb29111c3","time":"2022-07-07T08:39:53.658Z"}
*** /var/log/gitaly/gitaly.log ***
{"correlation_id":"01G7BX3FPZ8BTMCA0RY5754JGJ","error":"rpc error: code = PermissionDenied desc = permission denied","grpc.code":"PermissionDenied","grpc.meta.auth_version":"v2","grpc.meta.deadline_type":"unknown","grpc.meta.method_type":"unary","grpc.method":"Check","grpc.request.deadline":"2022-07-07T08:39:56.217","grpc.request.fullMethod":"/grpc.health.v1.Health/Check","grpc.request.payload_bytes":0,"grpc.response.payload_bytes":0,"grpc.service":"grpc.health.v1.Health","grpc.start_time":"2022-07-07T08:39:55.218","grpc.time_ms":0.135,"level":"warning","msg":"finished unary call with code PermissionDenied","peer.address":"10.42.1.134:51266","pid":12,"span.kind":"server","system":"grpc","time":"2022-07-07T08:39:55.218Z"}
{"correlation_id":"01G7BX3GPCRD1RPMN7F3WN6X14","error":"rpc error: code = PermissionDenied desc = permission denied","grpc.code":"PermissionDenied","grpc.meta.auth_version":"v2","grpc.meta.deadline_type":"unknown","grpc.meta.method_type":"unary","grpc.method":"Check","grpc.request.deadline":"2022-07-07T08:39:57.222","grpc.request.fullMethod":"/grpc.health.v1.Health/Check","grpc.request.payload_bytes":0,"grpc.response.payload_bytes":0,"grpc.service":"grpc.health.v1.Health","grpc.start_time":"2022-07-07T08:39:56.223","grpc.time_ms":0.189,"level":"warning","msg":"finished unary call with code PermissionDenied","peer.address":"10.42.1.134:51266","pid":12,"span.kind":"server","system":"grpc","time":"2022-07-07T08:39:56.223Z"}解决：服务器之间做好时间同步就好了