jssjr

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jssjr

The Lifecycle of an Outage

Scott Sanders -- jssjr@github.com

---

So we're all here at Monitorama, and it's awesome to see so many incredible people in one place focusing on such an important topic. I'd like to talk a bit about outage lifecycles and how the monitoring and alerting tools we're familiar with can be woven into processes that enable confidence.

When an incident occurs, we typically have an increased risk of an outage. How we structure our initial response, our decision making process, and our communication directly affects the impact that this incident will have. We need to think critically about our ability to quickly resolve any problems and reduce the risk of future incidents.

jssjr

26798 1035 (sshd) access /proc/self/oom_score_adj read: 0 write: 2
26802 1035 (sshd) iotime /proc/self/oom_score_adj time: 3
27062 1035 (sshd) access /etc/ld.so.cache read: 0 write: 0
27099 1035 (sshd) access /lib/x86_64-linux-gnu/libwrap.so.0 read: 832 write: 0
27101 1035 (sshd) iotime /lib/x86_64-linux-gnu/libwrap.so.0 time: 2
27127 1035 (sshd) access /lib/x86_64-linux-gnu/libpam.so.0 read: 832 write: 0
27128 1035 (sshd) iotime /lib/x86_64-linux-gnu/libpam.so.0 time: 1
27155 1035 (sshd) access /lib/x86_64-linux-gnu/libselinux.so.1 read: 832 write: 0
27156 1035 (sshd) iotime /lib/x86_64-linux-gnu/libselinux.so.1 time: 1
27180 1035 (sshd) access /usr/lib/libck-connector.so.0 read: 832 write: 0

jssjr

jssjr

#!/usr/local/bin/bash

NAGIOS_BASEURL="https://mynagios.server.tld"
NAGIOS_CGIURL="${NAGIOS_BASEURL}/nagios/cgi-bin/"

function hostgroup_links {
    URL="${NAGIOS_CGIURL}status.cgi?hostgroup="
    [ -n "$*" ] && echo $* | tr ',' "\n" | sed -e 's,^,  ,' -e "s,^  \([^ ]*\)$,  \1  (${URL}\1)," || echo '  NONE';
}

jssjr

define hostgroup{
    hostgroup_name                  servers
    alias                           Class - Servers
}

jssjr

#!/usr/bin/env sh

### Mirror all of the opscode-cookbooks repositories

trap "exit 1" INT TERM # exit gracefully if we're in the main loop

repos=$(curl -s -o- https://api.github.com/users/opscode-cookbooks/repos\?per_page\=1000 \
  | ruby -rubygems -e 'require "json"; JSON.load(STDIN.read).each{|r| puts r["git_url"]}')

for repo in $repos ; do

jssjr

require 'rubygems'
require 'chef'
require 'json'

# Load constants from rake config file.
require File.join(File.dirname(__FILE__), 'config', 'rake')

# Detect the version control system and assign to $vcs. Used by the update
# task in chef_repo.rake (below). The install task calls update, so this
# is run whenever the repo is installed.

jssjr

# arg1 = "String to expand as the run command, $key will be interpretted as the item name"
# arg2..n = items to iterate across
function tmux_windows() {
  session="tmux-cmd-$$"
  tmux new-session -d -s $session
  cmd=$1 ; shift 
  index=1
  while [ ! -z $1 ] ; do
    index=$((++index))
    export var=$1 ; shift 

jssjr

#!/bin/bash

# This is the current stable release to default to, with Omnibus patch level (e.g. 10.12.0-1)
# Note that the chef template downloads 'x.y.z' not 'x.y.z-r' which should be a duplicate of the latest -r
use_shell=0

prerelease="false"

# Check whether a command exists - returns 0 if it does, 1 if it does not
exists() {