I having a rather persistent issue with my Redis instance. While SELinux is in enforcing mode, Redis server is unable to start:

[root@server ~]# service redis start Starting redis-server: [ OK ] 

But in fact, it did not start as shown by lsof. It returns no result:

[root@server ~]# lsof -i :6379 

To futher confirm the it is not running, there is a redis log:

[5539] 21 Nov 03:44:34 # Opening port 6379: bind: Permission denied 

Now, I am pretty new with SELinux managing so, please bear with me as I might have missed something. This is what I was able to see:

[root@server ~]# semanage port -l | grep "redis" redis_port_t tcp 6379 [root@server ~]# semanage user -l SELinux User Prefix MCS Level MCS Range SELinux Roles .... redis user s0 s0 user_r .... 

The above redis user did not exist initially, but I tried adding it as redis-server really runs under it. That did not help...

Just to note, Redis server is used internally, so it listens only to 127.0.0.1:6379.

Does anyone have any ideas?

For the time being, I can put SELinux in permissive mode, but I would really like to tighten it up and do it "by-the-book".

UPDATE:

[root@server ~]# ausearch -ts recent -m avc ---- time->Thu Nov 24 13:48:13 2016 type=SYSCALL msg=audit(1480013293.595:34717): arch=c000003e syscall=49 success=no exit=-13 a0=4 a1=7ffea866c0f0 a2=10 a3=7ffea866be50 items=0 ppid=1 pid=16468 auid=0 uid=495 gid=495 euid=495 suid=495 fsuid=495 egid=495 sgid=495 fsgid=495 tty=(none) ses=5202 comm="redis-server" exe="/usr/sbin/redis-server" subj=unconfined_u:system_r:redis_t:s0 key=(null) type=AVC msg=audit(1480013293.595:34717): avc: denied { name_bind } for pid=16468 comm="redis-server" src=6379 scontext=unconfined_u:system_r:redis_t:s0 tcontext=system_u:object_r:http_port_t:s0 tclass=tcp_socket 

UPDATE(2)

[root@server ~]# rpm -qa | grep -i redis redis-2.4.10-1.el6.x86_64 php56w-pecl-redis-2.2.7-1.w6.x86_64 

SOLUTION:

Following @Matthew's suggestion, I started analyzing the redis_port_t and http_port_t:

[root@server ~]# semanage port -l | grep "redis_port_t" redis_port_t tcp 6379 [root@server ~]# semanage port -l | grep "http_port_t" http_port_t tcp 6379, 80, 81, 443, 488, 8008, 8009, 8443, 9000 

And there it was! The port 6379 was added to both of port policies! And yes, I know remember doing this when I started the migration :( (shame on me).

So, running this fixed the issue:

semanage port -d -t http_port_t 6379 semanage permissive -d redis_t // I don't need this anymore service redis restart lsof -i :6379 

And there it was :)

redis-ser 4575 redis 4u IPv4 236174 0t0 TCP localhost:6379 (LISTEN)