ebs-preinstall-EL7

[root@oel7 ~]# grep ^[^#] /etc/sysctl.conf
fs.file-max = 6815744
kernel.sem = 256 32000 100 142
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.panic_on_oops = 1
kernel.msgmax = 8192
kernel.msgmni = 2878
kernel.msgmnb = 65535
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.default.rp_filter = 2
net.ipv4.tcp_tw_recycle = 0
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
[root@oel7 ~]# grep ^[^#] /etc/security/limits.conf
oracle   soft   nofile    1024
oracle   hard   nofile    65536
oracle   soft   nproc    16384
oracle   hard   nproc    16384
oracle   soft   stack    10240
oracle   hard   stack    32768
oracle   hard   memlock    134217728
oracle   soft   memlock    134217728
[root@oel7 ~]# grep ^[^#] /etc/security/limits.d/20-nproc.conf 
*          soft    nproc     4096
root       soft    nproc     unlimited
[root@oel7 ~]#

# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
fs.file-max = 6815744
kernel.sem = 256 32000 100 142
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.panic_on_oops = 1
kernel.msgmax = 8192
kernel.msgmni = 2878
kernel.msgmnb = 65535
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.default.rp_filter = 2
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
vm.nr_hugepages = 128005

# grep ^[^#] /etc/security/limits.conf
*   soft   nofile   131072
*   hard   nofile   131072
*   soft   nproc   131072
*   hard   nproc   131072
*   soft   stack    10240
*   hard   stack    32768
*   hard   memlock    -1
*   soft   memlock    -1

net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
fs.file-max = 6815744
kernel.sem = 256 32000 100 142
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.panic_on_oops = 1
kernel.msgmax = 8192
kernel.msgmni = 2878
kernel.msgmnb = 65535
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.default.rp_filter = 2
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
vm.nr_hugepages = 128005
vm.max_map_count = 262144