Bug 1390974

Summary:	redis resource agent needs to fix up selinux permissions of rundir
Product:	Red Hat Enterprise Linux 7	Reporter:	Michele Baldessari <michele>
Component:	resource-agents	Assignee:	Oyvind Albrigtsen <oalbrigt>
Status:	CLOSED ERRATA	QA Contact:	Asaf Hirshberg <ahirshbe>
Severity:	urgent	Docs Contact:
Priority:	urgent
Version:	7.3	CC:	agk, cluster-maint, fdinitto, gcerami, mnovacek, ushkalim
Target Milestone:	rc	Keywords:	ZStream
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	resource-agents-3.9.5-83.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1394296 (view as bug list)		Environment:
Last Closed:	2017-08-01 14:55:11 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1394296

Description Michele Baldessari 2016-11-02 10:37:30 UTC

Description of problem:
Via https://bugs.launchpad.net/bugs/1637961 we found out that redis would not start due to selinux:
type=AVC msg=audit(1477956868.065:23265): avc: denied { write } for pid=11970 comm="redis-server" name="redis" dev="tmpfs" ino=130656 scontext=system_u:system_r:redis_t:s0 tcontext=system_u:object_r:var_run_t:s0 tclass=dir

The reason for this is that the rundir folder had the wrong permissions.
We need the following pull request merged to fix this:
https://github.com/ClusterLabs/resource-agents/pull/872

Comment 5 Asaf Hirshberg 2017-01-02 05:25:57 UTC

Verified:

[root@overcloud-controller-1 ~]# rpm -qa | grep resource-agent
resource-agents-3.9.5-83.el7.x86_64

[root@overcloud-controller-1 ~]# ls -dZ /var/run/redis/
drwxr-xr-x. redis redis system_u:object_r:redis_var_run_t:s0 /var/run/redis/

/var/log/redis/redis.log:
675228:M 02 Jan 05:18:34.530 # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128.
675228:M 02 Jan 05:18:34.530 # Server started, Redis version 3.0.6
675228:M 02 Jan 05:18:34.530 # WARNING overcommit_memory is set to 0! Background save may fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
675228:M 02 Jan 05:18:34.530 # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
675228:M 02 Jan 05:18:34.531 * DB loaded from disk: 0.000 seconds
675228:M 02 Jan 05:18:34.531 * The server is now ready to accept connections on port 6379
675228:M 02 Jan 05:18:34.531 * The server is now ready to accept connections at /var/run/redis/redis.sock
675228:S 02 Jan 05:18:35.037 * SLAVE OF no-such-master:6379 enabled (user request from 'id=4 addr=/var/run/redis/redis.sock:0 fd=6 name= age=0 idle=0 flags=U db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=slaveof')
675228:S 02 Jan 05:18:35.788 * Connecting to MASTER no-such-master:6379
675228:S 02 Jan 05:18:35.791 # Unable to connect to MASTER: Resource temporarily unavailable
.. output ommited # ahirshbe
.. output ommited # ahirshbe
675228:S 02 Jan 05:19:17.938 # Unable to connect to MASTER: Resource temporarily unavailable
675228:M 02 Jan 05:19:18.000 * MASTER MODE enabled (user request from 'id=60 addr=/var/run/redis/redis.sock:0 fd=48 name= age=0 idle=0 flags=U db=0 sub=0 psub=0 multi=-1 qbuf=0 qbuf-free=32768 obl=0 oll=0 omem=0 events=r cmd=slaveof')
675228:M 02 Jan 05:19:18.818 * Slave 10.35.174.23:6379 asks for synchronization
675228:M 02 Jan 05:19:18.819 * Full resync requested by slave 10.35.174.23:6379
675228:M 02 Jan 05:19:18.819 * Starting BGSAVE for SYNC with target: disk
675228:M 02 Jan 05:19:18.820 * Background saving started by pid 680814
680814:C 02 Jan 05:19:18.841 * DB saved on disk
680814:C 02 Jan 05:19:18.842 * RDB: 2 MB of memory used by copy-on-write
675228:M 02 Jan 05:19:18.940 * Background saving terminated with success
675228:M 02 Jan 05:19:18.940 * Synchronization with slave 10.35.174.23:6379 succeeded
675228:M 02 Jan 05:19:19.039 * Slave 10.35.174.15:6379 asks for synchronization
675228:M 02 Jan 05:19:19.039 * Full resync requested by slave 10.35.174.15:6379
675228:M 02 Jan 05:19:19.039 * Starting BGSAVE for SYNC with target: disk
675228:M 02 Jan 05:19:19.040 * Background saving started by pid 680815
680815:C 02 Jan 05:19:19.057 * DB saved on disk
680815:C 02 Jan 05:19:19.058 * RDB: 2 MB of memory used by copy-on-write
675228:M 02 Jan 05:19:19.140 * Background saving terminated with success
675228:M 02 Jan 05:19:19.140 * Synchronization with slave 10.35.174.15:6379 succeeded

Comment 6 errata-xmlrpc 2017-08-01 14:55:11 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:1844