#ssmjp 2014年10月 LT資料

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7. from fabric.api import *
@task
def hostname():
run('hostname')
@task
def upload_module():
put('~/works/webapp/lib', '/home/user/webapp/')
@task
def download_logs():
get('/home/user/webapp/log/access.log')
@task
def reboot_httpd():
sudo('/sbin/service httpd restart')

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12. from fabric.api import *
from fabric.contrib.files import *
import cuisine
from pit import Pit
cuisine.select_package('yum')
@task
def create_user():
with settings(user='root'):
cuisine.user_ensure('ssmjp')
append('/etc/sudoers', 'ssmjp ALL=(ALL) ALL')
cuisine.ssh_authorize('ssmjp', cuisine.file_local_read('~/.ssh/ssmjp.pub'))
conf = Pit.get('ssmjp-user', { 'require': { 'password': 'Your password' } })
cuisine.user_passwd('ssmjp', conf['password'])
@task
def install_packages():
with settings(user='root'):
cuisine.package_ensure('nginx')

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env.use_ssh_config = True

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def diff_hosts():
tempdir = run('mktemp -d')
try:
tempfile = '%s/hosts' % tempdir
put('/etc/hosts', tempfile)
run('diff -u /etc/hosts %s' % tempfile, warn_only=True)
finally:
run('rm -r %s' % tempdir)

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└── fabfile/
├── __init__.py
├── foo.py
└── math.py
__init__.py
import foo
import math

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@task
def calc_add(x, y):
'''
add two integer
'''
print '%d + %d = %d' % (int(x), int(y), int(x) + int(y))

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env.hosts = ['server1', 'server2']

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env.roledefs = {
'web': ['web01','web02'],
'db': ['db01']
}

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import yaml
def load_servers(filename):
config_yaml = open(filename).read()
config = yaml.load(config_yaml)
roledefs = config['roles']
all_hosts = []
for role in roledefs:
all_hosts.extend(roledefs[role])
roledefs['all'] = all_hosts
return roledefs
env.roledefs.update(load_servers('./servers.yaml'))

23. servers.yaml
roles:
even:
- conoha01.poi.jp
- conoha03.poi.jp
odd:
- conoha02.poi.jp

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host[00-03]âhost00
host01
host02
host03
import re
def expand_hosts(hosts):
new_hosts = []
for host in hosts:
m = re.search('[(d+)-(d+)]', host)
if m:
pre = host[:m.start()]
post = host[m.end():]
prec = len(m.group(1))
for n in range(int(m.group(1)), int(m.group(2)) + 1):
new_hosts.append(pre + ('%%0%dd' % prec % n) + post)
else:
new_hosts.append(host)
return new_hosts
env.hosts = expand_hosts(env.hosts)