sharshenov

class HealthCheckResponder

  def initialize(app, options = {})
    @app = app
  end

  def call(env)
    if env["REQUEST_PATH"] == "/health_check"
      return [200, {}, [""]]
    else

sharshenov

<h1>Page not found</h1>

sharshenov

SECRET_KEY_BASE=ahsbdjhasbjhdabks # run rake:secret to generate
DATABASE_URL=postgres://user:pass@dbhost/database

sharshenov

#!/bin/bash

cd ~/ror

# remove temporary uploads
find ./ -path "*/uploads/tmp/*" -delete

# null logfiles
for logfile in `find ./ -type f -name "*.log"`
do

sharshenov

# 1. Pause replication

sudo -u postgres psql -c 'SELECT pg_xlog_replay_pause();'

# 2. Perform backup

sudo -u postgres pg_dump -Fc DBNAME > /path/to/backup

#3. Resume replication

sharshenov

1. Select Preferences / Key Bindings(user)
2. Paste this:
```json
[
  { "keys": ["ctrl+w"], "command": "close_file" },
]

```

sharshenov

# open console as postgres user
sudo -u postgres psql

# paste this
update pg_database set datistemplate = FALSE where datname = 'template1';
drop database template1;
create database template1 with owner=postgres encoding='UTF-8' lc_collate='en_US.utf8' lc_ctype='en_US.utf8' template template0;
update pg_database set datistemplate = TRUE where datname = 'template1';

sharshenov

Keybase proof

I hereby claim:

• I am sharshenov on github.
• I am sharshenov (https://keybase.io/sharshenov) on keybase.
• I have a public key whose fingerprint is ED36 8D30 17B6 39F8 B58E 1E7D EDF0 0A21 B208 D134

To claim this, I am signing this object:

sharshenov

#Original article: https://www.digitalocean.com/community/tutorials/how-to-add-swap-on-ubuntu-12-04

dd if=/dev/zero of=/swapfile bs=1M count=1k
mkswap /swapfile
swapon /swapfile
echo '/swapfile       none    swap    sw      0       0 ' >> /etc/fstab
echo 1 | tee /proc/sys/vm/swappiness
echo vm.swappiness = 1 | tee -a /etc/sysctl.conf
chown root:root /swapfile
chmod 0600 /swapfile

sharshenov

# save as /etc/logrotate.d/APPNAME
/home/deploy/apps/APPNAME/shared/log/*.log {
  su deploy deploy
  daily
  missingok
  rotate 30
  compress
  delaycompress
  notifempty
  copytruncate