[root@ebs-65684 bin]# systemctl start redis.service
Job for redis.service failed because the control process exited with error code. See "systemctl status redis.service" and "journalctl -xe" for details.
[root@ebs-65684 bin]# systemctl status redis.service
● redis.service - redis-server
   Loaded: loaded (/etc/systemd/system/redis.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Mon 2020-07-27 22:20:04 EDT; 19s ago
  Process: 21499 ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/bin/redis.conf (code=exited, status=1/FAILURE)

Jul 27 22:20:04 ebs-65684 systemd[1]: Starting redis-server...
Jul 27 22:20:04 ebs-65684 redis-server[21499]: 21499:C 27 Jul 2020 22:20:04.806 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
Jul 27 22:20:04 ebs-65684 redis-server[21499]: 21499:C 27 Jul 2020 22:20:04.806 # Redis version=5.0.3, bits=64, commit=00000000, modified=0, pid=21499, just started
Jul 27 22:20:04 ebs-65684 redis-server[21499]: 21499:C 27 Jul 2020 22:20:04.806 # Configuration loaded
Jul 27 22:20:04 ebs-65684 redis-server[21499]: 21499:M 27 Jul 2020 22:20:04.808 * Increased maximum number of open files to 10032 (it was originally set to 1024).
Jul 27 22:20:04 ebs-65684 redis-server[21499]: 21499:M 27 Jul 2020 22:20:04.809 # Could not create server TCP listening socket 127.0.0.1:6379: bind: Address already in use
Jul 27 22:20:04 ebs-65684 systemd[1]: redis.service: control process exited, code=exited status=1
Jul 27 22:20:04 ebs-65684 systemd[1]: Failed to start redis-server.
Jul 27 22:20:04 ebs-65684 systemd[1]: Unit redis.service entered failed state.
Jul 27 22:20:04 ebs-65684 systemd[1]: redis.service failed.

Note this: could not create server tcp listenging socket 127.0.0.1:6379: bind: address already in use

[root@ebs-65684 bin]# ./redis-cli
127.0.0.1:6379> shutdown
not connected> exit

Jul 27 22:37:13 ebs-65684 systemd[1]: Failed to start redis-server.
Jul 27 22:37:13 ebs-65684 systemd[1]: Unit redis.service entered failed state.
Jul 27 22:37:13 ebs-65684 systemd[1]: redis.service failed.

[root@ebs-65684 /]#  vi /etc/systemd/system/redis.service
[root@ebs-65684 /]# systemctl start redis.service
Warning: redis.service changed on disk. Run 'systemctl daemon-reload' to reload units.
^C
[root@ebs-65684 /]# systemctl daemon-reload

[Unit]
Description=redis-server
After=network.target

[Service]
#Type=forking
#PIDFile=/var/run/redis/redis.pid
ExecStart=/usr/local/redis/bin/redis-server /usr/local/redis/bin/redis.conf
User=redis
Group=redis
#PrivateTmp=true

[Install]
WantedBy=multi-user.target