gerhard

root@freetunes:/tmp# vgcfgrestore --file /etc/lvm/backup/lvm-raid lvm-raid
  Restored volume group lvm-raid
root@freetunes:/tmp# vgchange -ay
  1 logical volume(s) in volume group "lvm-raid" now active
root@freetunes:/tmp# lvs
  LV   VG       Attr   LSize Origin Snap%  Move Log Copy%  Convert
  lvm0 lvm-raid -wi-a- 5.46t 
root@freetunes:/tmp# e2fsck /dev/lvm-raid/lvm0 
e2fsck 1.41.11 (14-Mar-2010)
e2fsck: Superblock invalid, trying backup blocks...

gerhard

Calista ➜  dashboard git:(master) ssh dashboard@nodejs-3 "cd app && git submodule update"                          
Initialized empty Git repository in /home/dashboard/app/assets/_lib/d3/.git/
Host key verification failed.
fatal: The remote end hung up unexpectedly
Clone of '[email protected]:gosquared/d3' into submodule path 'assets/_lib/d3' failed
Calista ➜  dashboard git:(master) ssh dashboard@nodejs-3 "ssh-keygen -F github.com -f ~/.ssh/known-hosts | head -1"
# Host github.com found: line 1 type RSA

gerhard

$ time curl -I "$uri" &> /dev/null
# when routed to the host that is up
curl -I "$uri" &> /dev/null  0.00s user 0.00s system 2% cpu 0.299 total
# when routed to the host that is down. Should this be ~3s as per fail_timeout & max_fails?
curl -I "$uri" &> /dev/null  0.00s user 0.00s system 0% cpu 21.304 total

gerhard

! pmacctd configuration
!
!
!
daemonize: true
pidfile: /var/run/pmacctd.pid
syslog: daemon
!
! interested in in and outbound traffic
aggregate: src_host,src_port,dst_host,dst_port

gerhard

if [ $(ls | grep -c "backup.*tgz") > 0 ]
then
  unless folder _purge exists; do
  mkdir _purge
  done

  mv backup*tgz _purge
  mv backup*md5 _purge
fi

gerhard

__parallelize() {
  local _task="$1"
  local _hosts="${2:-"$SERVERS_APP_USER"}"

  background_task_pids=()
  background_tasks=()

  for _host in $_hosts
  do
    ( eval "$_task" ) &

gerhard

Calista ➜  deliver git:(multi-server) ✗ multi
/usr/local/bin/parallel
FAILED!

gerhard

def em(redis_url=REDIS_URL, &block)
  EM.run do
    redis = EM::Hiredis.connect(redis_url)
    block.call(redis)
  end
end

# ...
# fluffyness
# ...

gerhard

server {
  listen 80;
  server_name dashboard.foo.com;

  upstream dashboard_backend {
    server 11.11.12.40:5000 max_fails=3 fail_timeout=1s;
  }

  location /{
    proxy_set_header X-Forwarded-Proto $scheme;

gerhard

#!/usr/bin/env sh

tail -f /var/log/apache2/gosquared*access.log | awk '
BEGIN { blocked_ips="" }
/ http/ {
  if (! index(blocked_ips, $1)) {
    // append this ip to our internal blocked_ips list
    blocked_ips = blocked_ips " " $1

    "date" | getline current_time