Archive: 2019/5

Enable auto logoff

Enabling automatic logoffSystems can be set to automatically logoff a user after a period of activity by setting some parameters: Linux/Solaris /etc/profile AIX /etc/security/.profile Parameter decl

/boot/grub/stage1 not read correctly

After pxe booting a server and installing linux from a cpio archive, grub failed to load using the grub-install command. The error presented was as follows: root@pxe:~# mkdir /targetroot@pxe:~# mount

Create logical volume using lvm

This example uses a local hard disk to create a logical volume. partition the disk as normal using fdisk. I new the fdisk options ahead of time from having done this before. EDS etldev1 ~ # FDISK_C

Set static and default gateway in route-eth file

Define default gateway in route-eth file[root@linux01 ~]# cat /etc/sysconfig/network-scripts/route-eth1default via dev eth1 Define default gateway in /etc/sysconfig/network:[root@linux01 ~

directory index full

How to handle “Directory index full” messages in syslogkernel: EXT3-fs warning (device dm-3): ext3_dx_add_entry: Directory index full! On systems in which this is being constantly logged to syslog, th

Create chroot jail with openssh

How to create a chroot jail with openssh (sftp only)This write up describes how to utilize openssh to setup a chroot jail for sftp connections within the CentOS family. I tried & tried to install

cron tips

Cron tipscrontab formatHere’s a quick comment that can be added to users crontabs as a reminder to the crontab format: # m h dom mon dow command There are various ways to schedule a command to run, su

ip_conntrack table full

ip_conntrack: table full, dropping packetAt one point, there was high call volume into our support center of customers complaining about severe lag. One common denominator was that the customer base

Extracting initrd

How to extract and view contents of initrdDepending on your version of linux, the /boot/initrd may be one of two formats: cpio archive ext2 filesystem data The easiest way to determine what you’re w