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++++
+
+title = "当启动数据库提示无权限创建目录时怎么办？" 
+
+date = "2023-07-03" 
+
+tags = ["当使用git出现提示untracked files时怎么办"] 
+
+archives = "2023-07" 
+
+author = "张翠娉" 
+
+summary = "当启动数据库提示无权限创建目录时怎么办"
+
+img = "/zh/post/zhangcuiping/title/img.png" 
+
+times = "14:20"
+
++++
+
+# 当启动数据库提示无权限创建目录时怎么办？
+
+**背景介绍**：
+
+在启动数据库时，遇到如下错误。
+
+**报错内容**：
+
+```bash
+[root@hostname data]# ptk cluster -n mogdb5 start
+INFO[2023-07-03T12:40:06.834] operation: start
+INFO[2023-07-03T12:40:06.834] ========================================
+INFO[2023-07-03T12:40:06.834] start db [172.23.2.98:29000] ...
+ERRO[2023-07-03T12:40:07.063] start db [172.23.2.98:29000] failed
+ERROR: Error: Process exited with status 1: could not create directory /data/mogdb-5.0.0/log/bin: Permission denied
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: gs_ctl started,datadir is /data/mogdb-5.0.0/data
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: can't create lock file "/data/mogdb-5.0.0/data/pg_ctl.lock" : Permission denied
+ Stdout: could not create directory /data/mogdb-5.0.0/log/bin: Permission denied
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: gs_ctl started,datadir is /data/mogdb-5.0.0/data
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: can't create lock file "/data/mogdb-5.0.0/data/pg_ctl.lock" : Permission denied
+OUTPUT: could not create directory /data/mogdb-5.0.0/log/bin: Permission denied
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: gs_ctl started,datadir is /data/mogdb-5.0.0/data
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: can't create lock file "/data/mogdb-5.0.0/data/pg_ctl.lock" : Permission denied
+Error: Process exited with status 1: could not create directory /data/mogdb-5.0.0/log/bin: Permission denied
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: gs_ctl started,datadir is /data/mogdb-5.0.0/data
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: can't create lock file "/data/mogdb-5.0.0/data/pg_ctl.lock" : Permission denied
+ Stdout: could not create directory /data/mogdb-5.0.0/log/bin: Permission denied
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: gs_ctl started,datadir is /data/mogdb-5.0.0/data
+[2023-07-03 12:40:07.061][2245625][][gs_ctl]: can't create lock file "/data/mogdb-5.0.0/data/pg_ctl.lock" : Permission denied
+```
+
+**报错原因**：数据库用户omm5没有数据库目录的权限。
+
+**解决办法**：
+
+执行如下命令赋予omm5用户数据库目录的权限后，重启启动即可成功。
+
+```bash
+chown -R omm5 /data/mogdb-5.0.0
+ptk cluster -n mogdb5 start
+```
+
+```bash
+[root@hostname data]# chown -R omm5 /data/mogdb-5.0.0
+[root@hostname data]# ptk ls
+  cluster_name |  id  |       addr        | user |        data_dir        |          db_version          |     create_time
+---------------+------+-------------------+------+------------------------+------------------------------+--------------------
+  mogdb5       | 6001 | 172.23.2.98:29000 | omm5 | /data/mogdb-5.0.0/data | MogDB 5.0.0 (build ec89b1c7) | 2023-06-26T16:15:09
+  mogdb3       | 6001 | 172.23.2.98:28000 | omm3 | /data/mogdb-3.0.4/data | MogDB 3.0.4 (build cc068866) | 2023-06-26T15:55:47
+  mogdb1       | 6001 | 172.23.2.98:27000 | omm2 | /data/mogdb1/data      | MogDB 3.0.0 (build 62408a0f) | 2023-06-25T09:56:51
+  uqbar1       | 6001 | 172.23.2.98:28000 | omm1 | /opt/uqbar/data        | Uqbar 2.0.0 (build 0a7d7d89) | 2023-06-14T15:03:46
+[root@kylinos data]# ptk cluster -n mogdb5 start
+INFO[2023-07-03T12:46:03.133] cluster current status is already Normal
+[root@kylinos data]# ptk cluster -n mogdb5 status
+[   Cluster State   ]
+cluster_name                            : mogdb5
+cluster_state                           : Normal
+database_version                        : MogDB 5.0.0 (build ec89b1c7)
+
+[  Datanode State   ]
+  cluster_name |  id  |     ip      | port  | user | nodename | db_role | state  | upstream
+---------------+------+-------------+-------+------+----------+---------+--------+-----------
+  mogdb5       | 6001 | 172.23.2.98 | 29000 | omm5 | dn_6001  | primary | Normal | -
+[root@hostname data]# su -  omm5
+上一次登录： 一 7月  3 12:41:49 CST 2023 pts/5 上
+[omm5@hostname ~]$ gsql -r
+gsql ((MogDB 5.0.0 build ec89b1c7) compiled at 2023-05-23 00:01:14 commit 0 last mr 1780 )
+Non-SSL connection (SSL connection is recommended when requiring high-security)
+Type "help" for help.
+
+MogDB=# 
+```
+