[root@rhel7 .oracle]# crsstat
--------------------------------------------------------------------------------
Name      Target State    Server          State details    
--------------------------------------------------------------------------------
Local Resources
--------------------------------------------------------------------------------
ora.DATA.dg
        ONLINE ONLINE    rhel7          STABLE
ora.LISTENER.lsnr
        ONLINE OFFLINE   rhel7          STABLE
ora.asm
        ONLINE ONLINE    rhel7          Started,STABLE
ora.ons
        OFFLINE OFFLINE   rhel7          STABLE
--------------------------------------------------------------------------------
Cluster Resources
--------------------------------------------------------------------------------
ora.cssd
   1    ONLINE ONLINE    rhel7          STABLE
ora.diskmon
   1    OFFLINE OFFLINE                STABLE
ora.driver.afd
   1    ONLINE ONLINE    rhel7          STABLE
ora.evmd
   1    ONLINE ONLINE    rhel7          STABLE
ora.ora12c.db
   1    ONLINE ONLINE    rhel7          Open,HOME=/u01/app/o
                               racle/product/12.2/d
                               b_home1,STABLE
--------------------------------------------------------------------------------

[grid@rhel7 ~]$ srvctl start listener
PRCR-1079 : Failed to start resource ora.LISTENER.lsnr
CRS-5016: Process "/u01/app/grid/bin/lsnrctl" spawned by agent "ORAAGENT" for action "start" failed: details at "(:CLSN00010:)" in "/u01/app/12.2/grid/diag/crs/rhel7/crs/trace/ohasd_oraagent_grid.trc"
CRS-5016: Process "/u01/app/grid/bin/lsnrctl" spawned by agent "ORAAGENT" for action "start" failed: details at "(:CLSN00010:)" in "/u01/app/12.2/grid/diag/crs/rhel7/crs/trace/ohasd_oraagent_grid.trc"
CRS-2674: Start of 'ora.LISTENER.lsnr' on 'rhel7' failed

LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 15-NOV-2017 20:03:28
Copyright (c) 1991, 2016, Oracle. All rights reserved.
Starting /u01/app/grid/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 12.2.0.1.0 - Production
System parameter file is /u01/app/grid/network/admin/listener.ora
Log messages written to /u01/app/12.2/grid/diag/tnslsnr/rhel7/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rhel7)(PORT=1521)))
Error listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
TNS-12555: TNS:permission denied
 TNS-12560: TNS:protocol adapter error
 TNS-00525: Insufficient privilege for operation
  Linux Error: 1: Operation not permitted
Listener failed to start. See the error message(s) above...

[root@rhel7 .oracle]# lsnrctl start
LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 15-NOV-2017 20:22:30
Copyright (c) 1991, 2016, Oracle. All rights reserved.
Starting /u01/app/grid/bin/tnslsnr: please wait...
TNS-12546: TNS:permission denied
 TNS-12560: TNS:protocol adapter error
 TNS-00516: Permission denied
  Linux Error: 13: Permission denied

[grid@rhel7 bin]$ relink all
 The Oracle home in which you are running this relinking tool does not 
have proper write permissions. Please run this relink script as the same
user who owns the Oracle home and ensure that the Oracle home has the
permissions from the original installation.
 If this is a Grid Infrastructure home, please refer to the 
documentation for the proper steps to relink and apply oneoff patches.

[root@rhel7 bin]# relink all
The relink script cannot be run as root.

[root@rhel7 app]# ls -ld grid
total 8
drwxr-x--- 84 root  oinstall 4096 Jul 18 20:26 grid

[root@rhel7 app]# chown grid grid
[grid@rhel7 ~]$ relink all
writing relink log to: /u01/app/grid/install/relink.log

[grid@rhel7 ~]$ lsnrctl start
LSNRCTL for Linux: Version 12.2.0.1.0 - Production on 15-NOV-2017 20:50:59
Copyright (c) 1991, 2016, Oracle. All rights reserved.
Starting /u01/app/grid/bin/tnslsnr: please wait...
TNSLSNR for Linux: Version 12.2.0.1.0 - Production
System parameter file is /u01/app/grid/network/admin/listener.ora
Log messages written to /u01/app/12.2/grid/diag/tnslsnr/rhel7/listener/alert/log.xml
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rhel7)(PORT=1521)))
Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=rhel7)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias           LISTENER
Version          TNSLSNR for Linux: Version 12.2.0.1.0 - Production
Start Date        15-NOV-2017 20:51:00
Uptime          0 days 0 hr. 0 min. 0 sec
Trace Level        off
Security         ON: Local OS Authentication
SNMP           OFF
Listener Parameter File  /u01/app/grid/network/admin/listener.ora
Listener Log File     /u01/app/12.2/grid/diag/tnslsnr/rhel7/listener/alert/log.xml
Listening Endpoints Summary...
 (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=rhel7)(PORT=1521)))
 (DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
The listener supports no services
The command completed successfully