CentOS

CentOS https://www.centos.org/docs/5/html/ https://wiki.centos.org/ https://wiki.centos.org/HowTos/Oracle12onCentos7 https://docs.oracle.com/database/121/index.html CentOS version cat /etc/centos-release hostnamectl rpm –query centos-release CentOS setup # pciutils (for running lspci) # xorg-x11-server-utils (for running xrandr) yum install -y nano mlocate wget zip unzip xorg-x11-drv-vesa pciutils xorg-x11-server-utils wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm # –nogpgcheck […]

CentOS and Oracle

https://wiki.centos.org/HowTos/Oracle12onCentos7 # rsync -cEhikLmrtz –progress –delete-after KIT/Oracle/linuxamd64_12102_databasese2 root@172.16.148.136:/root/KIT # scp KIT/Oracle/linuxamd64_12102_databasese2 root@172.16.148.137:/root/KIT # run as root … groupadd oinstall groupadd dba useradd -g oinstall -G dba oracle passwd oracle # For Intel N3150 CPU I changed the original “kernel.shmmax […]

RedHat & CentOS

Change hostname hostnamectl set-hostname redhat7.localdomain hostnamectl status Change in /etc/sysconfig/network HOSTNAME=redhat7.localdomain Change in /etc/hosts (otherwise Oracle won’t start -> when using Oracle …) 127.0.0.1 redhat7 redhat7.localdomain reboot Static ip setup [root@localhost ~]# cat /etc/sysconfig/network NETWORKING=yes GATEWAY=172.16.148.2 HOSTNAME=redhat7.localdomain [root@localhost ~]# cat […]

Ubuntu: login with certificate

See also https://adrhc.go.ro/wordpress/how-to-create-a-certificate/ for how to create public-pub.openssh. # Configure server # Uncomment in /etc/ssh/sshd_config: AuthorizedKeysFile %h/.ssh/authorized_keys # public-key in openssh format cat public-key.openssh.pem > ~/.ssh/authorized_keys # Configure client # id_rsa -> mandatory name # # private-key.pem.des3.bitvise must start […]