HaproxyConfig

class playback.haproxy_config.HaproxyConfig(user='ubuntu', hosts=None, key_filename=None, password=None, parallel=True, *args, **kwargs)

Bases: playback.common.Common

Configure HAProxy and Keepalived

Parameters:
  • user(str) – the user for remote server to login
  • hosts(list) – this is a second param
  • key_filename(str) – the ssh private key to used, default None
  • password(str) – the password for remote server
  • parallel(bool) – paralleler execute on remote server, default True
Returns:

None
Examples:
# create two haproxy instances
haproxy1 = HaproxyConfig(
    user='ubuntu',
    hosts=['haproxy1']
)
haproxy2 = HaproxyConfig(
    user='ubuntu',
    hosts=['haproxy2']
)

# generate haproxy configfile example or manually create
from playback.templates.haproxy_cfg import conf_haproxy_cfg
with open('haproxy.cfg', 'w') as f:
    f.write(conf_haproxy_cfg)

# upload config to haproxy1 and haproxy2
haproxy1.upload_conf('haproxy.cfg')
haproxy2.upload_conf('haproxy.cfg')

# setup keepalived
haproxy1.configure_keepalived(
    router_id='lb1',
    priority=150,
    state='MASTER',
    interface='eth0',
    vip='192.168.1.1'
)
haproxy2.configure_keepalived(
    router_id='lb2',
    priority=100,
    state='SLAVE',
    interface='eth0',
    vip='192.168.1.1'
)
configure_keepalived(*args, **kwargs)

Configure keepalived

Parameters:
  • router_id – Keepalived router id e.g. lb1
  • priority – Keepalived priority e.g. 150
  • state – Keepalived state e.g. MASTER or ‘SLAVE’
  • interface – Keepalived binding interface e.g. eth0
  • vip – Keepalived virtual ip e.g. CONTROLLER_VIP
Returns:

None
upload_conf(*args, **kwargs)

Upload configuration file to the target host

Parameters:file – the path of haproxy configration file
Returns:None