Archive: 2019/5

2019
Linux

/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

Linux

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

Linux

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 10.195.30.1 dev eth1 Define default gateway in /etc/sysconfig/network:[root@linux01 ~

Linux

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

Linux

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

Linux

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

Linux

Failed to activate lv

Failed to activate new LVEDS etlprod2 ~ # lvcreate -l 14645 -n lv_dwstore vg_etlprod2 Not activating vg_etlprod2/lv_dwstore since it does not pass activation filter. Failed to activate new LV. Resol

Linux

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

Linux

postfix masquerade

Setting relayhost in postfixThe relayhost parameter specifies the default host to send mail to. This is equivalent to the DS entry in sendmails MTA sendmail.cf config file. !!! note output below h