Slurm：某些 sacctmgr 命令的“连接被拒绝”

我有一个现有的 slurm 集群启动并运行，但截至今天没有更改配置，当我运行某些sacctmgr命令并slurmdbd崩溃时出现错误：

$ sacctmgr list associations
sacctmgr: error: slurm_persist_conn_open_without_init: failed to open persistent connection to slurm.domain.com:6819: Connection refused
sacctmgr: error: slurmdbd: Getting response to message type 1410
sacctmgr: error: slurmdbd: DBD_GET_ASSOCS failure: Connection refused
 Error with request: Connection refused

节目systemctl status：

Jul 03 10:01:46 slurm systemd[1]: slurmdbd.service: Main process exited, code=killed, status=11/SEGV
Jul 03 10:01:46 slurm systemd[1]: slurmdbd.service: Failed with result 'signal'.

slurmdbd.log 说：

[2020-07-03T10:01:45.816] debug2: Opened connection 9 from 127.0.0.1
[2020-07-03T10:01:45.817] debug:  REQUEST_PERSIST_INIT: CLUSTER:slurmcluster VERSION:8192 UID:0 IP:127.0.0.1 CONN:9
[2020-07-03T10:01:45.817] debug2: acct_storage_p_get_connection: request new connection 1
[2020-07-03T10:01:45.861] debug2: DBD_FINI: CLOSE:0 COMMIT:0
[2020-07-03T10:01:45.862] debug4: got 0 commits
[2020-07-03T10:01:45.949] debug2: DBD_GET_ASSOCS: called
[2020-07-03T10:01:45.950] debug4: 9(as_mysql_assoc.c:2032) query
call get_parent_limits('assoc_table', 'root', 'slurmcluster', 0); select @par_id, @mj, @msj, @mwpj, @mtpj, @mtpn, @mtmpj, @mtrm, @def_qos_id, @qos, @delta_qos;

但是其他命令有效（崩溃后需要重新启动 slurmdbd）：

$ sacctmgr show cluster
   Cluster     ControlHost  ControlPort   RPC     Share GrpJobs       GrpTRES GrpSubmit MaxJobs       MaxTRES MaxSubmit     MaxWall                  QOS   Def QOS
---------- --------------- ------------ ----- --------- ------- ------------- --------- ------- ------------- --------- ----------- -------------------- ---------
slurmclus+       127.0.0.1         6817  8192         1                                                                                           normal

我可以连接到数据库并执行命令。另外，我可以通过telnet slurm.domain.com 6819.

我正在使用标准 Ubuntu 18.04 存储库中的 slurm 17.11.2 和 MySQL 5.7。