keithchambers

#!/bin/bash

# requires root effective permissions
if [[ "$(id -u)" -ne 0 ]]; then
    echo "Error: $0 must execute as root."
    exit 1
fi

# create list of active kernel modules
lsmod | awk '$3 > 0 && NR > 1 {print $1}' > module.lst

keithchambers

---
- name: check if avahi installed
  command: rpm -q avahi
  register: avahi_service
  changed_when: no
  failed_when: no
  tags:
    - dnsmasq

- name: disable avahi-daemon

keithchambers

PS1="\[\033[01;32m\]\u@\h\[\033[00m\] \[\033[01;34m\]\w\n$ \[\033[00m\]"

keithchambers

consul exec whoami | awk '$1 != "==>" && $2 { sub(/^[ \t]+/, ""); print }'

keithchambers

#!/bin/bash

PREFIX="centos"
STATUS="ACTIVE"

INSTANCES="$(nova list | awk -v status="$STATUS" '$6 == status { print $4 }')"
for INSTANCE in $INSTANCES; do
    IMAGE="$(nova show "$INSTANCE" | awk -v prefix=$PREFIX '$2 == "image" && $4 ~ "^"prefix { print $4 }')"
    echo "$INSTANCE" "$IMAGE"
done

keithchambers

docker ps | awk '$1 != "CONTAINER" { n++ }; END { print n+0 }'

keithchambers

---
- name: test if grub configured for noop i/o scheduler
  command: egrep -q 'elevator=noop' /boot/grub2/grub.cfg
  register: grub
  changed_when: no
  failed_when: grub_test.rc == 2

- name: configure grub for noop i/o scheduler
  sudo: yes
  command: grubby --update-kernel=ALL --args=elevator=noop

keithchambers

---
- name: setup epel-release repo
  sudo: yes
  yum:
    name: epel-release
    state: present

- name: install fio package
  sudo: yes
  yum:

keithchambers

#/bin/bash
set -eo pipefail

HOSTNAME="${COLLECTD_HOSTNAME:-"$(hostname -s)"}"
INTERVAL="${COLLECTD_INTERVAL:-10}"

iostat -xky "$INTERVAL" | awk -v hostname="$HOSTNAME" -v interval="$INTERVAL" '/^([shv]|xv)d[a-z]$/ {
    print "PUTVAL " hostname "/disk-" $1 "/read_reqs_merged_sec"  " interval=" interval  " N:" $2;
    print "PUTVAL " hostname "/disk-" $1 "/write_reqs_merged_sec" " interval=" interval  " N:" $3;
    print "PUTVAL " hostname "/disk-" $1 "/read_reqs_sec"         " interval=" interval  " N:" $4;

keithchambers

#!/bin/bash
set -eo pipefail

VERIFY_INCOMING="${VERIFY_INCOMING:-true}"
VERIFY_OUTGOING="${VERIFY_OUTGOING:-true}"

# check all required environment variables set
VARS=(CA_FILE KEY_FILE CERT_FILE)
for VAR in "$VARS"; do
    [[ -n "$VAR" ]] && echo "Error: $VAR is not set" && RETVAL=1