CentOS 7系统下SELinux阻止MongoDB启动的问题详解

# mongod.conf

# for documentation of all options, see:
# http://docs.mongodb.org/manual/reference/configuration-options/

# where to write logging data.
systemLog:
 destination: file
 logAppend: true
 path: /data/mongodb/log/mongod.log

# Where and how to store data.
storage:
 dbPath: /data/mongodb/data
.....

# ls -alh
drwxr-xr-x. 5 mongod mongod 4.0K 11月 1 14:53 mongodb

# cd mongodb
# ls -alh
drwxr-xr-x. 3 mongod mongod 4.0K 11月 9 19:08 data
drwxr-xr-x. 2 mongod mongod 4.0K 11月 9 19:06 log
drwxr-xr-x. 2 mongod mongod 4.0K 11月 1 14:54 run

Nov 9 06:06:44 [localhost] setroubleshoot: failed to retrieve rpm info for /data/mongodb/run/mongod.pid
Nov 9 06:06:44 [localhost] setroubleshoot: SELinux is preventing /usr/bin/mongod from write access on the file /data/mongodb/run/mongod.pid. For complete SELinux messages run: sealert -l f7148e11-b126-401e-ba9f-a9a87c1e54ae
Nov 9 06:06:44 [localhost] python: SELinux is preventing /usr/bin/mongod from write access on the file /data/mongodb/run/mongod.pid.#012#012***** Plugin restorecon (94.8 confidence) suggests ************************#012#012If you want to fix the label. #012/data/mongodb/run/mongod.pid default label should be default_t.#012Then you can run restorecon.#012Do#012# /sbin/restorecon -v /data/mongodb/run/mongod.pid#012#012***** Plugin catchall_labels (5.21 confidence) suggests *******************#012#012If you want to allow mongod to have write access on the mongod.pid file#012Then you need to change the label on /data/mongodb/run/mongod.pid#012Do#012# semanage fcontext -a -t FILE_TYPE '/data/mongodb/run/mongod.pid'#012where FILE_TYPE is one of the following: afs_cache_t, initrc_tmp_t, mongod_log_t, mongod_tmp_t, mongod_var_lib_t, mongod_var_run_t, puppet_tmp_t, user_cron_spool_t.#012Then execute:#012restorecon -v '/data/mongodb/run/mongod.pid'#012#012#012***** Plugin catchall (1.44 confidence) suggests **************************#012#012If you believe that mongod should be allowed write access on the mongod.pid file by default.#012Then you should report this as a bug.#012You can generate a local policy module to allow this access.#012Do#012allow this access for now by executing:#012# ausearch -c 'mongod' --raw | audit2allow -M my-mongod#012# semodule -i my-mongod.pp#012

For complete SELinux messages run: sealert -l e73ba9e8-f74d-4835-9b53-85667546b28c

# sealert -l e73ba9e8-f74d-4835-9b53-85667546b28c
SELinux is preventing /usr/bin/mongod from write access on the directory /data/mongodb/log.

***** Plugin catchall_labels (83.8 confidence) suggests *******************

If you want to allow mongod to have write access on the log directory
Then 必须更改 /data/mongodb/log 中的标签
Do
# semanage fcontext -a -t FILE_TYPE '/data/mongodb/log'

restorecon -v '/data/mongodb/log'


***** Plugin catchall (17.1 confidence) suggests **************************
......

# semanage fcontext -a -t mongo_log_t '/data/mongodb/log'
# restorecon -v '/data/mongodb/log'
restorecon reset /data/mongodb/log context unconfined_u:object_r:unlabeled_t:s0->unconfined_u:object_r:mongod_log_t:s0

Nov 9 06:08:51 [localhost] systemd: Starting High-performance, schema-free document-oriented database...
Nov 9 06:08:51 [localhost] systemd: Started High-performance, schema-free document-oriented database.
Nov 9 06:08:51 [localhost] mongod: about to fork child process, waiting until server is ready for connections.
Nov 9 06:08:51 [localhost] mongod: forked process: 18218
Nov 9 06:08:51 [localhost] mongod: child process started successfully, parent exiting

# setenforce 0
# getenforce
Permissive