KVCacheServer: CacheServer.cpp:816: virtual void CacheServer::initialize(): Assertion `false' failed.

[CyrusZhou-CN]

用容器创建的测试环境，刚刚创建的服务，过一会服务状态就会显示Off

删除SemKey.dat文件才可以启动。重启容器后又会出现同样的错误提示。

[initialize server] .............................. [Done]
--
  | ====================================================================================================
  | 2022-02-18 11:00:43\|140237359572864\|DEBUG\|CacheServer::addConfig pullConfig result = [succ] get remote config:CacheServer.conf
  | 2022-02-18 11:00:43\|140237359572864\|DEBUG\|RouterHandle::initialize Succ
  | 2022-02-18 11:00:43\|140237359572864\|DEBUG\|CacheServer::initialize groupName:TestKValueKVGroup1
  | 2022-02-18 11:00:43\|140237359572864\|DEBUG\|CacheServer::initialize get semkey from file: /usr/local/app/tars/tarsnode/data/DCache.TestKValueKVCacheServer1-1/data//SemKey.dat succ, semkey = 1149095802
  | 2022-02-18 11:00:43\|140237359572864\|DEBUG\|CacheServer::initialize semkey = 1149095802
  | 2022-02-18 11:00:43\|140237359572864\|ERROR\|[CacheServer::initialize] file: /usr/local/app/tars/tarsnode/data/DCache.TestKValueKVCacheServer1-1/data//SemKey.dat exist, but shmget 1149095802 failed, errno = 2,master server assert.
  | KVCacheServer: CacheServer.cpp:816: virtual void CacheServer::initialize(): Assertion `false' failed.

[ruanshudong]

部署在容器里面? dcache用到了共享内存, 启动时要指定–ipc=host
另外这个文件记录了共享内存的key, 这个key是通过ftok计算的, 是不是容器里面这个值会变?

[CyrusZhou-CN]

感谢，花了1周时间，总算全部运行起来了.

容量设置 –ipc=host

共享内存key(10进制) ，每个服务设置成用不一样的值。

[CyrusZhou-CN]

好尴尬，第二天一开机又启动不了了，可能和我用的是windows 10 系统，docker的宿主机重启有关。
目前解决方法是，删除所有 SemKey.dat 文件，然后重启服务

[ruanshudong]

这个值是通过ftok计算出来的, 按说不应改变

[CyrusZhou-CN]

我测试了一下重启 docker 服务，就无法运行了，而且所有的服务的 shmSize 值都是 52428800 ，应该是只读取第一个创建的服务的shmSize的值，没有读取到服务本身设置的值。
只有不重启 docker 服务，就没有问题。

下面是3个不同服务的错误日志：

[initialize server] .............................. [Done]
--
  | ====================================================================================================
  | 2022-02-19 12:21:52\|140168575133568\|DEBUG\|CacheServer::addConfig pullConfig result = [succ] get remote config:CacheServer.conf
  | 2022-02-19 12:21:52\|140168575133568\|DEBUG\|RouterHandle::initialize Succ
  | 2022-02-19 12:21:52\|140168575133568\|DEBUG\|CacheServer::initialize groupName:TestKValueKVGroup1
  | 2022-02-19 12:21:52\|140168575133568\|DEBUG\|CacheServer::initialize get semkey from file: /usr/local/app/tars/tarsnode/data/DCache.TestKValueKVCacheServer1-1/data//SemKey.dat succ, semkey = 52428800
  | 2022-02-19 12:21:52\|140168575133568\|DEBUG\|CacheServer::initialize /Main/Cache<ShmKey>:52428800
  | 2022-02-19 12:21:52\|140168575133568\|DEBUG\|CacheServer::initialize semkey = 52428800
  | 2022-02-19 12:21:52\|140168575133568\|ERROR\|[CacheServer::initialize] file: /usr/local/app/tars/tarsnode/data/DCache.TestKValueKVCacheServer1-1/data//SemKey.dat exist, but shmget 52428800 failed, errno = 2,master server assert.
  | KVCacheServer: CacheServer.cpp:819: virtual void CacheServer::initialize(): Assertion `false' failed.

[initialize server] .............................. [Done]
  | ====================================================================================================
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|MKCacheServer::addConfig pullConfig result = [succ] get remote config:MKCacheServer.conf
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|RouterHandle::initialize Succ
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|MKCacheServer::initialize groupName:TestSetMkvMKVGroup1
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|[MKCacheServer::initialize] open file succ! /usr/local/app/tars/app_log//DCache/TestSetMkvMKVCacheServer1-1/DCache.TestSetMkvMKVCacheServer1-1_binlog_2022021912.log
  | 2022-02-19 12:12:12\|140666604607232\|DEBUG\|[CreateBinlogFileThread::Run] start!
  | 2022-02-19 12:12:12\|140666604607232\|DEBUG\|[CreateBinlogFileThread::Run] create file!
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|MKCacheServer::initialize get semkey from file: /usr/local/app/tars/tarsnode/data/DCache.TestSetMkvMKVCacheServer1-1/data//SemKey.dat succ, semkey = 52428803
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|CacheServer::initialize /Main/Cache<ShmKey>:52428803
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|MKCacheServer::initialize semkey = 52428803
  | 2022-02-19 12:12:12\|140666764209088\|DEBUG\|MKCacheServer::initialize shmSize=52428800
  | 2022-02-19 12:12:12\|140666764209088\|ERROR\|[MKCacheServer::initialize] file: /usr/local/app/tars/tarsnode/data/DCache.TestSetMkvMKVCacheServer1-1/data//SemKey.dat exist, but shmget 52428803 failed, errno = 2,master server assert.
  | MKVCacheServer: MKCacheServer.cpp:917: virtual void MKCacheServer::initialize(): Assertion `false' failed.

[initialize server] .............................. [Done]
--
  | ====================================================================================================
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|MKCacheServer::addConfig pullConfig result = [succ] get remote config:MKCacheServer.conf
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|RouterHandle::initialize Succ
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|MKCacheServer::initialize groupName:TestListMkvMKVGroup1
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|[MKCacheServer::initialize] open file succ! /usr/local/app/tars/app_log//DCache/TestListMkvMKVCacheServer1-1/DCache.TestListMkvMKVCacheServer1-1_binlog_2022021912.log
  | 2022-02-19 12:21:55\|139776690747136\|DEBUG\|[CreateBinlogFileThread::Run] start!
  | 2022-02-19 12:21:55\|139776690747136\|DEBUG\|[CreateBinlogFileThread::Run] create file!
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|MKCacheServer::initialize get semkey from file: /usr/local/app/tars/tarsnode/data/DCache.TestListMkvMKVCacheServer1-1/data//SemKey.dat succ, semkey = 52428802
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|CacheServer::initialize /Main/Cache<ShmKey>:52428802
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|MKCacheServer::initialize semkey = 52428802
  | 2022-02-19 12:21:55\|139776853437376\|DEBUG\|MKCacheServer::initialize shmSize=52428800
  | 2022-02-19 12:21:55\|139776853437376\|ERROR\|[MKCacheServer::initialize] file: /usr/local/app/tars/tarsnode/data/DCache.TestListMkvMKVCacheServer1-1/data//SemKey.dat exist, but shmget 52428802 failed, errno = 2,master server assert.
  | MKVCacheServer: MKCacheServer.cpp:917: virtual void MKCacheServer::initialize(): Assertion `false' failed.

[CyrusZhou-CN]

测试了扩容出来的服务也是无法运行。删除SemKey.dat还是无法运行

[initialize server] .............................. [Done]
  | ====================================================================================================
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|CacheServer::addConfig pullConfig result = [succ] get remote config:CacheServer.conf
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|RouterHandle::initialize Succ
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|CacheServer::initialize groupName:TestKValueKVGroup2
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|CacheServer::initialize /Main/Cache<ShmKey>:1141932491
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|CacheServer::initialize semkey = 1141932491
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|initLock finish
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|CacheServer::initialize, initLock finish
  | 2022-02-19 12:48:18\|140303062685568\|DEBUG\|initStore start
  | [init exception]:[TC_Shm::init()] shmget error :No such file or directory
 ```

[ruanshudong]

部署在docker里面就会带来这个问题是吧? 之前应该是没人部署在docker里面

[CyrusZhou-CN]

有有可能，改天试试真机部署，目前调试不影响使用，就先用着了。