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CentOS6.6 2?vsftpd-2.2.2 Second, the installation $ yum install -y vsftpd [root@oracledbserver mohan]# yum install vsftpd Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Install Process Loading mirror speeds from cached hostfile * base: mirror.vodien.com * extras: mirror.vodien.com * updates: mirror.vastspace.net base | 3.7 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 Resolving […] RedHat Enterprise Linux 6.6 with CentOS Apache [root@oracledbserver ~]# yum install httpd* -y Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Install Process Loading mirror speeds from cached hostfile * base: mirror.vodien.com * extras: mirror.vodien.com * updates: mirror.vastspace.net base | 3.7 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 Package httpd-2.2.15-39.el6.centos.x86_64 […] To reset the root password of your server, you will need to boot into single user mode. Access the Manage section of your server in the customer portal and follow these steps. The option depends on the bootloader version on the machine: CentOS 6 Click [View Console] to access the console and click the send […] Need to add date to bash history, knowing when some commands were fired. Before the change: root@host# history 1 ifconfig 2 ifup eth0 3 ifconfig 4 shutdown -r now root@host# history 1 ifconfig 2 ifup eth0 3 ifconfig 4 shutdown -r now Now, make appripriate changes in your bash profile: echo ‘export HISTTIMEFORMAT=”%d/%m/%y %T “‘ […] Change default Linux IO scheduler to optimize IOs (very important if server is VM) Check existing (active) io scheduler (elevator): [root@server ~]# cat /sys/block/sda/queue/scheduler noop anticipatory deadline [cfq] # cfq active [root@server ~]# cat /sys/block/sda/queue/scheduler noop anticipatory deadline [cfq] # cfq active Change it on the fly [root@server ~]# echo noop > /sys/block/sda/queue/scheduler [root@server ~]# […] Need to change default EXT4 mount options to tweek performance DEFAULT EXT4 mount options (Centos 6.3): Shell [root@server ~]# cat /etc/fstab<br /> dev/sda1 / ext4 defaults 0 1 1 2 [root@server ~]# cat /etc/fstab dev/sda1 / ext4 defaults 0 1 … meaning … Shell [root@server ~]# cat /proc/mounts | grep ext4<br /> /dev/sda1 / […] Purpose The keypair you create will be in the .pem format. If you plan on using PuTTy to SSH to a Linux instance from a Windows computer you will need to convert that keypair file to the .ppk format. This article will show you those steps. Notes Your original private key pair file (.pem) is […] LVM2: device filter and LVM metadata restore Customize LVM device filter to get rid of the annoying “/dev/cdrom: open failed” warning ##/dev/cdrom: open failed warning $pvcreate /dev/sdb1 /dev/cdrom: open failed: Read-only file system $ vgcreate vg01 /dev/sdb1 /dev/cdrom: open failed: Read-only file system ##The error because LVM scan all device files by default, you can […] Boot your rescue media. Scan for volume groups: # lvm vgscan -v Activate all volume groups: # lvm vgchange -a y List logical volumes: # lvm lvs –all With this information, and the volumes activated, you should be able to mount the volumes: # mount /dev/volumegroup/logicalvolume /mountpoint With the announcement of the ShellShock Bash vulnerability last week it has caught news around the security updates. This is bug is being dubbed to be bigger than The Heartbleed Bug. Some interesting read about ShellShock can be found here. Fix ShellShock Bash Vulnerability on CentOS – Test Before you begin it’s better to test […] |
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