호스트명 변경 및 /etc/hosts 수정

hostnamectl set-hostname emcc
hostnamectl status
[root@ol7 ~]# hostnamectl status
   Static hostname: ol7
         Icon name: computer-vm
           Chassis: vm
        Machine ID: bc52b2b7cc3049f7b59bd9b9bf12fa4f
           Boot ID: c13050917cc140128b6fa581a41f231a
    Virtualization: kvm
  Operating System: Oracle Linux Server 7.3
       CPE OS Name: cpe:/o:oracle:linux:7:3:server
            Kernel: Linux 4.1.12-61.1.18.el7uek.x86_64
      Architecture: x86-64

[root@ol7 ~]# hostnamectl set-hostname emcc

[root@ol7 ~]# hostnamectl status
   Static hostname: emcc
         Icon name: computer-vm
           Chassis: vm
        Machine ID: bc52b2b7cc3049f7b59bd9b9bf12fa4f
           Boot ID: c13050917cc140128b6fa581a41f231a
    Virtualization: kvm
  Operating System: Oracle Linux Server 7.3
       CPE OS Name: cpe:/o:oracle:linux:7:3:server
            Kernel: Linux 4.1.12-61.1.18.el7uek.x86_64
      Architecture: x86-64

 

<IP> emcc
10.0.1.133  emcc

 

ping -c 3 emcc
[root@emcc ~]# ping -c 3 emcc
PING emcc (10.10.10.13) 56(84) bytes of data.
64 bytes from emcc (10.10.10.13): icmp_seq=1 ttl=64 time=0.014 ms
64 bytes from emcc (10.10.10.13): icmp_seq=2 ttl=64 time=0.025 ms
64 bytes from emcc (10.10.10.13): icmp_seq=3 ttl=64 time=0.032 ms

--- emcc ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.014/0.023/0.032/0.009 ms

 

필수 OS 패키지 확인 및 설치

rpm -q make
rpm -q binutils
rpm -q gcc
rpm -q libaio
rpm -q glibc-common
rpm -q libstdc++
rpm -q libXtst
rpm -q sysstat
rpm -q glibc
rpm -q glibc-devel
[root@emcc ~]# rpm -q make
make-3.82-23.el7.x86_64
[root@emcc ~]# rpm -q binutils
binutils-2.25.1-22.base.el7.x86_64
[root@emcc ~]# rpm -q gcc
gcc-4.8.5-11.el7.x86_64
[root@emcc ~]# rpm -q libaio
libaio-0.3.109-13.el7.x86_64
[root@emcc ~]# rpm -q glibc-common
glibc-common-2.17-157.el7.x86_64
[root@emcc ~]# rpm -q libstdc++
libstdc++-4.8.5-11.el7.x86_64
[root@emcc ~]# rpm -q libXtst
libXtst-1.2.2-2.1.el7.x86_64
[root@emcc ~]# rpm -q sysstat
sysstat-10.1.5-11.el7.x86_64
[root@emcc ~]# rpm -q glibc
glibc-2.17-157.el7.x86_64
[root@emcc ~]# rpm -q glibc-devel
glibc-devel-2.17-157.el7.x86_64

오라클의 권고사항(https://docs.oracle.com/cd/cloud-control-13.3/EMBSC/GUID-059D95F7-0326-4E0D-9470-6675C1891BA9.htm#EMBSC131)에 따르면 다음의 패키지가 필수로 설치되어 있어야 합니다.

  • make-3.81
  • binutils-2.20
  • gcc-4.4.4
  • libaio-0.3.107
  • glibc-common-2.12-1
  • libstdc++-4.4.4
  • libXtst-1.0.99 (x86_64)
  • sysstat-9.0.4
  • glibc-2.12
  • glibc-devel-2.12-1.7 (i686)
  • glibc-devel-2.12-1.7 (x86_64)
rpm -Uvh glibc-devel-2.17-157.el7.i686.rpm glibc-2.17-157.el7.i686.rpm nss-softokn-freebl-3.16.2.3-14.4.el7.i686.rpm
[root@emcc Packages]# rpm -Uvh glibc-devel-2.17-157.el7.i686.rpm glibc-2.17-157.el7.i686.rpm nss-softokn-freebl-3.16.2.3-14.4.el7.i686.rpm
경고: glibc-devel-2.17-157.el7.i686.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY
준비 중...                         ################################# [100%]
Updating / installing...
   1:nss-softokn-freebl-3.16.2.3-14.4.################################# [ 33%]
   2:glibc-2.17-157.el7               ################################# [ 67%]
   3:glibc-devel-2.17-157.el7         ################################# [100%]

필수 패키지 중에 하나인 glibc-devel 의 32비트 버전을 추가로 설치해야 합니다.

다음의 2 패키지도 함께 설치해야 합니다.

  • glibc (x86_64)
  • nss-softokn-freebl (x86_64)

커널 변수 수정 및 변경 내역 적용

net.ipv4.ip_local_port_range = 11000 65000

 

sysctl -p
[root@emcc ~]# sysctl -p
fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.panic_on_oops = 1
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.default.rp_filter = 2
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 11000 65000