@coinology Thanks, the mount -o remount,exec /tmp command works like a charm.
Now I am trying to remove noexec from /etc/fstab but I couldn't find it there. This is the content of the file:
#
# /etc/fstab
# Created by anaconda on Wed Aug 21 11:03:58 2019
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/vda1 / xfs defaults,uquota 0 0
/usr/swpDSK swap swap defaults 0 0
/usr/tmpDSK /tmp ext3 defaults,noauto 0 0
As I couldn't find it there, I restarted the server to see If I would need to remove noexe again, and I needed it.
I am very happy to to be able to run Elasticsearch again. I how you can help me with this too.