tjhartmann

kubectl --kubeconfig kube_config_cluster.yml get configmap -n kube-system full-cluster-state -o json | jq -r .data.\"full-cluster-state\" | jq -r . > cluster.rkestate

tjhartmann

alias archtree='ps ww -o sid,pgid,pid,args --forest -s `cat /var/run/supervisord.pid`'

tjhartmann

#!/usr/bin/env python

"""Functions to convert IPv4 address to integer and vice-versa.

Written by Christian Stigen Larsen, http://csl.sublevel3.org
Placed in the public domain by the author, 2012-01-11

Example usage:
$ ./ipv4 192.168.0.1 3232235521
192.168.0.1 ==> 3232235521

tjhartmann

gdb --batch --eval-command 'call exit(0)' --pid <process id>

tjhartmann

# concise logical disk enumeration
MegaCli -LDInfo -Lall -aAll | egrep 'Size|State|Number|Adapter|Virtual'

# concise physical disks enumeration
MegaCli -PDList -aALL | egrep 'Enclosure|Raw Size|Slot Number|Device Id|Firmware state|Inquiry|Adapter'

tjhartmann

mkdir /path/to/chroot
rpm --root /path/to/chroot --initdb
wget http://repo_url/centos-release-version.rpm
rpm -i --nodeps --root /path/to/chroot /path/to/centos-release-version.rpm

yum --installroot=/path/to/chroot --nogpgcheck install -y yum rpm-build
# -or-
yum --installroot=/path/to/chroot --nogpgcheck groupinstall -y Base

# to use yum inside the chroot

tjhartmann

# extract old initrd
mkdir newinitrd
cd newinitrd
zcat ../oldinitrd.img | cpio -ivd
# make changes

# create new initrd
find . | cpio -o -H newc | gzip > /tmp/newinitrd

tjhartmann

dnscmd.exe <DNS Server> /RecordAdd domain.com hostname /CreatePTR A ipaddress