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config.py
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#!/usr/bin/env python3
import common
import logging
import os
logger = None
def init_log():
global logger
logger = common.marathon_lb_logger.getChild('config.py')
class ConfigTemplate:
def __init__(self, name, value, overridable, description):
self.name = name
self.full_name = 'HAPROXY_' + name
self.value = value
self.default_value = value
self.overridable = overridable
self.description = description
class ConfigTemplater(object):
def add_template(self, template):
self.t[template.name] = template
def global_default_options(self):
default = 'redispatch,http-server-close,dontlognull'
options = os.getenv('HAPROXY_GLOBAL_DEFAULT_OPTIONS', default)
template = ' option {opt}\n'
lines = sorted(set(template.format(opt=opt.strip())
for opt in options.split(',')))
return ''.join(lines)
def load(self):
self.add_template(
ConfigTemplate(name='HEAD',
value='''\
global
log /dev/log local0
log /dev/log local1 notice
spread-checks 5
max-spread-checks 15000
maxconn 50000
tune.ssl.default-dh-param 2048
ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:\
ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:\
ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:\
DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:\
ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES128-SHA256:\
DHE-RSA-AES256-SHA256:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:\
AES256-SHA256:!aNULL:!MD5:!DSS
ssl-default-bind-options no-sslv3 no-tlsv10 no-tls-tickets
ssl-default-server-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:\
ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:\
ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:\
DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:\
ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:DHE-RSA-AES128-SHA256:\
DHE-RSA-AES256-SHA256:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:\
AES256-SHA256:!aNULL:!MD5:!DSS
ssl-default-server-options no-sslv3 no-tlsv10 no-tls-tickets
stats socket /var/run/haproxy/socket
server-state-file global
server-state-base /var/state/haproxy/ expose-fd listeners
lua-load /marathon-lb/health.lua
lua-load /marathon-lb/getpids.lua
lua-load /marathon-lb/getconfig.lua
lua-load /marathon-lb/getmaps.lua
lua-load /marathon-lb/signalmlb.lua
defaults
load-server-state-from-file global
log global
log-format "%ci:%cp [%tr] %ft %b/%s %TR/%Tw/%Tc/%Tr/%Ta %ST %B %CC %CS %tsc %ac/%fc/%bc/%sc/%rc %sq/%bq %hr %hs %HM %HU %HV"
retries 3
backlog 10000
maxconn 10000
timeout connect 3s
timeout client 30s
timeout server 30s
timeout tunnel 3600s
timeout http-keep-alive 1s
timeout http-request 15s
timeout queue 30s
timeout tarpit 60s
''' + self.global_default_options() + '''\
listen stats
bind 0.0.0.0:9090
balance
mode http
http-request use-service prometheus-exporter if { path /metrics }
stats enable
acl health path /_haproxy_health_check
http-request use-service lua.health if health
acl getpid path /_haproxy_getpids
http-request use-service lua.getpids if getpid
acl getvhostmap path /_haproxy_getvhostmap
http-request use-service lua.getvhostmap if getvhostmap
acl getappmap path /_haproxy_getappmap
http-request use-service lua.getappmap if getappmap
acl getconfig path /_haproxy_getconfig
http-request use-service lua.getconfig if getconfig
acl signalmlbhup path /_mlb_signal/hup
http-request use-service lua.signalmlbhup if signalmlbhup
acl signalmlbusr1 path /_mlb_signal/usr1
http-request use-service lua.signalmlbusr1 if signalmlbusr1
resolvers dcos-spartan
nameserver dns1 198.51.100.1:53
nameserver dns2 198.51.100.2:53
nameserver dns3 198.51.100.3:53
accepted_payload_size 8192 # allow larger DNS payloads
''',
overridable=False,
description='''\
The head of the HAProxy config. This contains global settings
and defaults.
'''))
self.add_template(
ConfigTemplate(name='USERLIST_HEAD',
value='''
userlist user_{backend}
user {user} password {passwd}
''',
overridable=True,
description='''\
The userlist for basic HTTP auth.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_HEAD',
value='''
frontend marathon_http_in
bind *:80
mode http
''',
overridable=False,
description='''\
An HTTP frontend that binds to port *:80 by default and gathers
all virtual hosts as defined by the `HAPROXY_{n}_VHOST` label.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_APPID_HEAD',
value='''
frontend marathon_http_appid_in
bind *:9091
mode http
''',
overridable=False,
description='''\
An HTTP frontend that binds to port *:9091 by default and gathers
all apps in HTTP mode.
To use this frontend to forward to your app, configure the app with
`HAPROXY_0_MODE=http` then you can access it via a call to the :9091
with the header "X-Marathon-App-Id" set to the Marathon AppId.
Note multiple HTTP ports being exposed by the same marathon app are not
supported. Only the first HTTP port is available via this frontend.
'''))
# TODO(lloesche): make certificate path dynamic and allow multi-certs
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_HEAD',
value='''
frontend marathon_https_in
bind *:443 ssl {sslCerts}
mode http
''',
overridable=False,
description='''\
An HTTPS frontend for encrypted connections that binds to port *:443 by
default and gathers all virtual hosts as defined by the
`HAPROXY_{n}_VHOST` label. You must modify this file to
include your certificate.
'''))
self.add_template(
ConfigTemplate(name='FRONTEND_HEAD',
value='''
frontend {backend}
bind {bindAddr}:{servicePort}{sslCert}{bindOptions}
mode {mode}
''',
overridable=True,
description='''\
Defines the address and port to bind to for this frontend.
'''))
self.add_template(
ConfigTemplate(name='BACKEND_HEAD',
value='''
backend {backend}
balance {balance}
mode {mode}
''',
overridable=True,
description='''\
Defines the type of load balancing, roundrobin by default,
and connection mode, TCP or HTTP.
'''))
self.add_template(
ConfigTemplate(name='BACKEND_REDIRECT_HTTP_TO_HTTPS',
value='''\
redirect scheme https code 301 if !{{ ssl_fc }} host_{cleanedUpHostname}
''',
overridable=True,
description='''\
This template is used with backends where the
`HAPROXY_{n}_REDIRECT_TO_HTTPS` label is set to true
'''))
self.add_template(
ConfigTemplate(name='BACKEND_REDIRECT_HTTP_TO_HTTPS_WITH_PATH',
value='''\
redirect scheme https code 301 if !{{ ssl_fc }} host_{cleanedUpHostname}\
path_{backend}
''',
overridable=True,
description='''\
Same as `HAPROXY_BACKEND_REDIRECT_HTTP_TO_HTTPS`,
but includes a path.
'''))
self.add_template(
ConfigTemplate(name='BACKEND_HSTS_OPTIONS',
value='''\
rspadd Strict-Transport-Security:\ max-age=15768000
''',
overridable=True,
description='''\
This template is used for the backend where the
`HAPROXY_{n}_USE_HSTS` label is set to true.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ACL',
value='''\
acl host_{cleanedUpHostname} hdr(host) -i {hostname}
use_backend {backend} if host_{cleanedUpHostname}
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding virtual host
of the `HAPROXY_HTTP_FRONTEND_HEAD`
'''))
self.add_template(
ConfigTemplate(name='MAP_HTTP_FRONTEND_ACL',
value='''\
use_backend %[req.hdr(host),lower,regsub(:.*$,,),\
map({haproxy_dir}/domain2backend.map)]
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding virtual host
of the `HAPROXY_HTTP_FRONTEND_HEAD` using haproxy maps.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ACL_WITH_AUTH',
value='''\
acl host_{cleanedUpHostname} hdr(host) -i {hostname}
acl auth_{cleanedUpHostname} http_auth(user_{backend})
http-request auth realm "{realm}" if host_{cleanedUpHostname}\
!auth_{cleanedUpHostname}
use_backend {backend} if host_{cleanedUpHostname}
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding virtual host
of the `HAPROXY_HTTP_FRONTEND_HEAD` thru HTTP basic auth.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ACL_ONLY',
value='''\
acl host_{cleanedUpHostname} hdr(host) -i {hostname}
''',
overridable=True,
description='''\
Define the ACL matching a particular hostname, but unlike
`HAPROXY_HTTP_FRONTEND_ACL`, only do the ACL portion. Does not glue
the ACL to the backend. This is useful only in the case of multiple
vhosts routing to the same backend.
'''))
self.add_template(
ConfigTemplate(name='MAP_HTTP_FRONTEND_ACL_ONLY',
value='''\
use_backend %[req.hdr(host),lower,regsub(:.*$,,),\
map({haproxy_dir}/domain2backend.map)]
''',
overridable=True,
description='''\
Define the ACL matching a particular hostname, This is useful only in the case
of multiple vhosts routing to the same backend in haproxy map.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ROUTING_ONLY',
value='''\
use_backend {backend} if host_{cleanedUpHostname}
''',
overridable=True,
description='''\
This is the counterpart to `HAPROXY_HTTP_FRONTEND_ACL_ONLY` which
glues the acl name to the appropriate backend.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ROUTING_ONLY_WITH_AUTH',
value='''\
acl auth_{cleanedUpHostname} http_auth(user_{backend})
http-request auth realm "{realm}" if host_{cleanedUpHostname} \
!auth_{cleanedUpHostname}
use_backend {backend} if host_{cleanedUpHostname}
''',
overridable=True,
description='''\
This is the counterpart to `HAPROXY_HTTP_FRONTEND_ACL_ONLY` which
glues the acl name to the appropriate backend, and add http basic auth.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ACL_WITH_PATH',
value='''\
acl host_{cleanedUpHostname} hdr(host) -i {hostname}
acl path_{backend} path_beg {path}
use_backend {backend} if host_{cleanedUpHostname} path_{backend}
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding virtual host with path
of the `HAPROXY_HTTP_FRONTEND_HEAD`.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ACL_WITH_AUTH_AND_PATH',
value='''\
acl host_{cleanedUpHostname} hdr(host) -i {hostname}
acl auth_{cleanedUpHostname} http_auth(user_{backend})
acl path_{backend} path_beg {path}
http-request auth realm "{realm}" if host_{cleanedUpHostname} \
path_{backend} !auth_{cleanedUpHostname}
use_backend {backend} if host_{cleanedUpHostname} path_{backend}
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding virtual host with path
of the `HAPROXY_HTTP_FRONTEND_HEAD` thru HTTP basic auth.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ACL_ONLY_WITH_PATH',
value='''\
acl path_{backend} path_beg {path}
''',
overridable=True,
description='''\
Define the ACL matching a particular hostname with path, but unlike
`HAPROXY_HTTP_FRONTEND_ACL_WITH_PATH`, only do the ACL portion. Does not glue
the ACL to the backend. This is useful only in the case of multiple
vhosts routing to the same backend
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ACL_ONLY_WITH_PATH_AND_AUTH',
value='''\
acl path_{backend} path_beg {path}
acl auth_{cleanedUpHostname} http_auth(user_{backend})
''',
overridable=True,
description='''\
Define the ACL matching a particular hostname with path and auth, but unlike
`HAPROXY_HTTP_FRONTEND_ACL_WITH_PATH`, only do the ACL portion. Does not glue
the ACL to the backend. This is useful only in the case of multiple
vhosts routing to the same backend
'''))
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_ACL_ONLY_WITH_PATH',
value='''\
acl path_{backend} path_beg {path}
''',
overridable=True,
description='''\
Same as HTTP_FRONTEND_ACL_ONLY_WITH_PATH, but for HTTPS.
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_ROUTING_ONLY_WITH_PATH',
value='''\
use_backend {backend} if host_{cleanedUpHostname} path_{backend}
''',
overridable=True,
description='''\
This is the counterpart to `HAPROXY_HTTP_FRONTEND_ACL_ONLY_WITH_PATH` which
glues the acl names to the appropriate backend
'''))
self.add_template(
ConfigTemplate(name='\
HTTP_FRONTEND_ROUTING_ONLY_WITH_PATH_AND_AUTH',
value='''\
http-request auth realm "{realm}" if host_{cleanedUpHostname} \
path_{backend} !auth_{cleanedUpHostname}
use_backend {backend} if host_{cleanedUpHostname} path_{backend}
''',
overridable=True,
description='''\
This is the counterpart to `HAPROXY_HTTP_FRONTEND_ACL_ONLY_WITH_PATH` which
glues the acl names to the appropriate backend
'''))
# XXX Missing function set label in app, as well as not appending
# a label. Since neither exist, not adding this for now.
self.add_template(
ConfigTemplate(name='\
HTTPS_FRONTEND_ROUTING_ONLY_WITH_PATH_AND_AUTH',
value='''\
http-request auth realm "{realm}" if host_{cleanedUpHostname} \
path_{backend} !auth_{cleanedUpHostname}
use_backend {backend} if host_{cleanedUpHostname} path_{backend}
''',
overridable=True,
description='''\
This is the counterpart to `HAPROXY_HTTP_FRONTEND_ACL_ONLY_WITH_PATH` which
glues the acl names to the appropriate backend
'''))
self.add_template(
ConfigTemplate(name='HTTP_FRONTEND_APPID_ACL',
value='''\
acl app_{cleanedUpAppId} hdr(x-marathon-app-id) -i {appId}
use_backend {backend} if app_{cleanedUpAppId}
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding app
of the `HAPROXY_HTTP_FRONTEND_APPID_HEAD`.
'''))
self.add_template(
ConfigTemplate(name='MAP_HTTP_FRONTEND_APPID_ACL',
value='''\
use_backend %[req.hdr(x-marathon-app-id),lower,\
map({haproxy_dir}/app2backend.map)]
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding app
of the `HAPROXY_HTTP_FRONTEND_APPID_HEAD` using haproxy maps.
'''))
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_ACL',
value='''\
use_backend {backend} if {{ ssl_fc_sni {hostname} }}
''',
overridable=True,
description='''\
The ACL that performs the SNI based hostname matching
for the `HAPROXY_HTTPS_FRONTEND_HEAD` template.
'''))
self.add_template(
ConfigTemplate(name='MAP_HTTPS_FRONTEND_ACL',
value='''\
use_backend %[ssl_fc_sni,lower,map({haproxy_dir}/domain2backend.map)]
''',
overridable=True,
description='''\
The ACL that performs the SNI based hostname matching
for the `HAPROXY_HTTPS_FRONTEND_HEAD` template using haproxy maps
'''))
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_ACL_WITH_AUTH',
value='''\
acl auth_{cleanedUpHostname} http_auth(user_{backend})
http-request auth realm "{realm}" if {{ ssl_fc_sni {hostname} }} \
!auth_{cleanedUpHostname}
use_backend {backend} if {{ ssl_fc_sni {hostname} }}
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding virtual host
of the `HAPROXY_HTTPS_FRONTEND_HEAD` thru HTTP basic auth.
'''))
# XXX Missing function set label in app, as well as not appending
# a label. Since neither exist, not adding this for now.
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_AUTH_ACL_ONLY',
value='''\
acl auth_{cleanedUpHostname} http_auth(user_{backend})
''',
overridable=True,
description='''\
The http auth ACL to the corresponding virtual host.
'''))
# XXX Missing function set label in app, as well as not appending
# a label. Since neither exist, not adding this for now.
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_AUTH_REQUEST_ONLY',
value='''\
http-request auth realm "{realm}" if {{ ssl_fc_sni {hostname} }} \
!auth_{cleanedUpHostname}
''',
overridable=True,
description='''\
The http auth request to the corresponding virtual host.
'''))
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_ACL_WITH_PATH',
value='''\
use_backend {backend} if {{ ssl_fc_sni {hostname} }} path_{backend}
''',
overridable=True,
description='''\
The ACL that performs the SNI based hostname matching with path
for the `HAPROXY_HTTPS_FRONTEND_HEAD` template.
'''))
self.add_template(
ConfigTemplate(name='HTTPS_FRONTEND_ACL_WITH_AUTH_AND_PATH',
value='''\
acl auth_{cleanedUpHostname} http_auth(user_{backend})
http-request auth realm "{realm}" if {{ ssl_fc_sni {hostname} }} \
path_{backend} !auth_{cleanedUpHostname}
use_backend {backend} if {{ ssl_fc_sni {hostname} }} path_{backend}
''',
overridable=True,
description='''\
The ACL that glues a backend to the corresponding virtual host with path
of the `HAPROXY_HTTPS_FRONTEND_HEAD` thru HTTP basic auth.
'''))
self.add_template(
ConfigTemplate(name='BACKEND_HTTP_OPTIONS',
value='''\
option forwardfor
http-request set-header X-Forwarded-Port %[dst_port]
http-request add-header X-Forwarded-Proto https if { ssl_fc }
''',
overridable=True,
description='''\
Sets HTTP headers, for example X-Forwarded-For and X-Forwarded-Proto.
'''))
self.add_template(
ConfigTemplate(name='HTTP_BACKEND_PROXYPASS_GLUE',
value='''\
http-request set-header Host {hostname}
reqirep "^([^ :]*)\ {proxypath}/?(.*)" "\\1\ /\\2"
''',
overridable=True,
description='''\
Backend glue for `HAPROXY_{n}_HTTP_BACKEND_PROXYPASS_PATH`.
'''))
self.add_template(
ConfigTemplate(name='HTTP_BACKEND_REVPROXY_GLUE',
value='''\
acl hdr_location res.hdr(Location) -m found
rspirep "^Location: (https?://{hostname}(:[0-9]+)?)?(/.*)" "Location: \
{rootpath} if hdr_location"
''',
overridable=True,
description='''\
Backend glue for `HAPROXY_{n}_HTTP_BACKEND_REVPROXY_PATH`.
'''))
self.add_template(
ConfigTemplate(name='HTTP_BACKEND_REDIR',
value='''\
acl is_root path -i /
acl is_domain hdr(host) -i {hostname}
redirect code 301 location {redirpath} if is_domain is_root
''',
overridable=True,
description='''\
Set the path to redirect the root of the domain to
Ex: HAPROXY_0_HTTP_BACKEND_REDIR = '/my/content'
'''))
self.add_template(
ConfigTemplate(name='BACKEND_HTTP_HEALTHCHECK_OPTIONS',
value='''\
option httpchk GET {healthCheckPath}
timeout check {healthCheckTimeoutSeconds}s
''',
overridable=True,
description='''\
Sets HTTP health check options, for example timeout check and httpchk GET.
Parameters of the first health check for this service are exposed as:
* healthCheckPortIndex
* healthCheckPort
* healthCheckProtocol
* healthCheckPath
* healthCheckTimeoutSeconds
* healthCheckIntervalSeconds
* healthCheckGracePeriodSeconds
* healthCheckMaxConsecutiveFailures
* healthCheckFalls is set to healthCheckMaxConsecutiveFailures + 1
* healthCheckPortOptions is set to ` port {healthCheckPort}`
Defaults to empty string.
Example:
```
option httpchk GET {healthCheckPath}
timeout check {healthCheckTimeoutSeconds}s
```
'''))
self.add_template(
ConfigTemplate(name='BACKEND_TCP_HEALTHCHECK_OPTIONS',
value='',
overridable=True,
description='''\
Sets TCP health check options, for example timeout check.
Parameters of the first health check for this service are exposed as:
* healthCheckPortIndex
* healthCheckPort
* healthCheckProtocol
* healthCheckTimeoutSeconds
* healthCheckIntervalSeconds
* healthCheckGracePeriodSeconds
* healthCheckMaxConsecutiveFailures
* healthCheckFalls is set to healthCheckMaxConsecutiveFailures + 1
* healthCheckPortOptions is set to ` port {healthCheckPort}`
Defaults to empty string.
Example:
```
timeout check {healthCheckTimeoutSeconds}s
```
'''))
self.add_template(
ConfigTemplate(name='BACKEND_STICKY_OPTIONS',
value='''\
cookie mesosphere_server_id insert indirect nocache
''',
overridable=True,
description='''\
Sets a cookie for services where `HAPROXY_{n}_STICKY` is true.
'''))
self.add_template(
ConfigTemplate(name='BACKEND_SERVER_OPTIONS',
value='''\
server {serverName} {host_ipv4}:{port}{cookieOptions}\
{healthCheckOptions}{otherOptions}
''',
overridable=True,
description='''\
The options for each server added to a backend.
'''))
self.add_template(
ConfigTemplate(name='BACKEND_SERVER_HTTP_HEALTHCHECK_OPTIONS',
value='''\
check inter {healthCheckIntervalSeconds}s fall {healthCheckFalls}\
{healthCheckPortOptions}
''',
overridable=True,
description='''\
Sets HTTP health check options for a single server, e.g. check inter.
Parameters of the first health check for this service are exposed as:
* healthCheckPortIndex
* healthCheckPort
* healthCheckProtocol
* healthCheckPath
* healthCheckTimeoutSeconds
* healthCheckIntervalSeconds
* healthCheckGracePeriodSeconds
* healthCheckMaxConsecutiveFailures
* healthCheckFalls is set to healthCheckMaxConsecutiveFailures + 1
* healthCheckPortOptions is set to ` port {healthCheckPort}`
Defaults to empty string.
Example:
```
check inter {healthCheckIntervalSeconds}s fall {healthCheckFalls}
```
'''))
self.add_template(
ConfigTemplate(name='BACKEND_SERVER_TCP_HEALTHCHECK_OPTIONS',
value='''\
check inter {healthCheckIntervalSeconds}s fall {healthCheckFalls}\
{healthCheckPortOptions}
''',
overridable=True,
description='''\
Sets TCP health check options for a single server, e.g. check inter.
Parameters of the first health check for this service are exposed as:
* healthCheckPortIndex
* healthCheckPort
* healthCheckProtocol
* healthCheckTimeoutSeconds
* healthCheckIntervalSeconds
* healthCheckGracePeriodSeconds
* healthCheckMaxConsecutiveFailures
* healthCheckFalls is set to healthCheckMaxConsecutiveFailures + 1
* healthCheckPortOptions is set to ` port {healthCheckPort}`
Defaults to empty string.
Example:
```
check inter {healthCheckIntervalSeconds}s fall {healthCheckFalls}
```
'''))
self.add_template(
ConfigTemplate(name='FRONTEND_BACKEND_GLUE',
value='''\
use_backend {backend}
''',
overridable=True,
description='''\
This option glues the backend to the frontend.
'''))
self.add_template(
ConfigTemplate(name='HTTP_BACKEND_NETWORK_ALLOWED_ACL',
value='''\
acl network_allowed src {network_allowed}
''',
overridable=True,
description='''\
This option set the IPs (or IP ranges) having access to the HTTP backend.
'''))
self.add_template(
ConfigTemplate(name='HTTP_BACKEND_ACL_ALLOW_DENY',
value='''\
http-request allow if network_allowed
http-request deny
''',
overridable=False,
description='''\
This option denies all IPs (or IP ranges) not explicitly allowed to access\
the HTTP backend.
Use with `HAPROXY_HTTP_BACKEND_NETWORK_ALLOWED_ACL`.
'''))
self.add_template(
ConfigTemplate(name='TCP_BACKEND_NETWORK_ALLOWED_ACL',
value='''\
acl network_allowed src {network_allowed}
''',
overridable=True,
description='''\
This option set the IPs (or IP ranges) having access to the TCP backend.
'''))
self.add_template(
ConfigTemplate(name='TCP_BACKEND_ACL_ALLOW_DENY',
value='''\
tcp-request content accept if network_allowed
tcp-request content reject
''',
overridable=False,
description='''\
This option denies all IPs (or IP ranges) not explicitly allowed to access\
the TCP backend.
Use with HAPROXY_TCP_BACKEND_ACL_ALLOW_DENY.
'''))
def __init__(self, directory='templates'):
self.__template_directory = directory
self.t = dict()
self.load()
self.__load_templates()
def __load_templates(self):
'''Look in environment variables for templates. If not set in env,
load template files if they exist. Othwerwise it sets defaults'''
for template in self.t:
name = self.t[template].full_name
if os.environ.get(name):
logger.info('overriding %s from environment variable', name)
env_template_val = os.environ.get(name)
# Handle escaped endlines
self.t[template].value = env_template_val.replace("\\n", "\n")
else:
try:
filename = os.path.join(self.__template_directory, name)
with open(filename) as f:
logger.info('overriding %s from %s', name, filename)
self.t[template].value = f.read()
except IOError:
logger.debug("setting default value for %s", name)
def get_descriptions(self):
descriptions = '''\
## Templates
The following is a list of the available HAProxy templates.
Some templates are global-only (such as `HAPROXY_HEAD`), but most may
be overridden on a per service port basis using the
`HAPROXY_{n}_...` syntax.
'''
desc_template = '''\
## `{full_name}`
*{overridable}*
Specified as {specifiedAs}.
{description}
**Default template for `{full_name}`:**
```
{default}```
'''
for tname in sorted(self.t.keys()):
t = self.t[tname]
spec = "`HAPROXY_" + t.name + "` template"
if t.overridable:
spec += " or with label `HAPROXY_{n}_" + t.name + "`"
descriptions += desc_template.format(
full_name=t.full_name,
specifiedAs=spec,
overridable="Overridable per app" if t.overridable
else "Global",
description=t.description,
default=t.default_value
)
descriptions += '''\
## Other Labels
These labels may be used to configure other app settings.
'''
desc_template = '''\
## `{full_name}`
*{perServicePort}*
Specified as {specifiedAs}.
{description}
'''
for label in labels:
if label.name not in self.t:
if label.name == 'GROUP':
# this one is a special snowflake
spec = "`HAPROXY_{n}_" + label.name + "`" + " or " + \
"`HAPROXY_" + label.name + "`"
elif label.perServicePort:
spec = "`HAPROXY_{n}_" + label.name + "`"
else:
spec = "`HAPROXY_" + label.name + "`"
descriptions += desc_template.format(
full_name=label.full_name.replace('_{0}_', '_{n}_'),
specifiedAs=spec,
perServicePort="per service port" if label.perServicePort
else "per app",
description=label.description
)
return descriptions
@property
def haproxy_head(self):
return self.t['HEAD'].value
@property
def haproxy_http_frontend_head(self):
return self.t['HTTP_FRONTEND_HEAD'].value
@property
def haproxy_http_frontend_appid_head(self):
return self.t['HTTP_FRONTEND_APPID_HEAD'].value
@property
def haproxy_http_backend_acl_allow_deny(self):
return self.t['HTTP_BACKEND_ACL_ALLOW_DENY'].value
@property
def haproxy_tcp_backend_acl_allow_deny(self):
return self.t['TCP_BACKEND_ACL_ALLOW_DENY'].value
@property
def haproxy_https_frontend_head(self):
return self.t['HTTPS_FRONTEND_HEAD'].value
def haproxy_userlist_head(self, app):
if 'HAPROXY_{0}_USERLIST_HEAD' in app.labels:
return app.labels['HAPROXY_{0}_USERLIST_HEAD']
return self.t['USERLIST_HEAD'].value
def haproxy_http_frontend_acl_with_auth(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL_WITH_AUTH' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL_WITH_AUTH']
return self.t['HTTP_FRONTEND_ACL_WITH_AUTH'].value
def haproxy_https_frontend_acl_with_auth(self, app):
if 'HAPROXY_{0}_HTTPS_FRONTEND_ACL_WITH_AUTH' in app.labels:
return app.labels['HAPROXY_{0}_HTTPS_FRONTEND_ACL_WITH_AUTH']
return self.t['HTTPS_FRONTEND_ACL_WITH_AUTH'].value
def haproxy_http_frontend_acl_with_auth_and_path(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL_WITH_AUTH_AND_PATH' in app.labels:
return \
app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL_WITH_AUTH_AND_PATH']
return self.t['HTTP_FRONTEND_ACL_WITH_AUTH_AND_PATH'].value
def haproxy_https_frontend_acl_with_auth_and_path(self, app):
if 'HAPROXY_{0}_HTTPS_FRONTEND_ACL_WITH_AUTH_AND_PATH' in app.labels:
return \
app.labels['HAPROXY_{0}_HTTPS_FRONTEND_ACL_WITH_AUTH_AND_PATH']
return self.t['HTTPS_FRONTEND_ACL_WITH_AUTH_AND_PATH'].value
def haproxy_frontend_head(self, app):
if 'HAPROXY_{0}_FRONTEND_HEAD' in app.labels:
return app.labels['HAPROXY_{0}_FRONTEND_HEAD']
return self.t['FRONTEND_HEAD'].value
def haproxy_backend_redirect_http_to_https(self, app):
if 'HAPROXY_{0}_BACKEND_REDIRECT_HTTP_TO_HTTPS' in app.labels:
return app.labels['HAPROXY_{0}_BACKEND_REDIRECT_HTTP_TO_HTTPS']
return self.t['BACKEND_REDIRECT_HTTP_TO_HTTPS'].value
def haproxy_backend_redirect_http_to_https_with_path(self, app):
if 'HAPROXY_{0}_BACKEND_REDIRECT_HTTP_TO_HTTPS_WITH_PATH' in\
app.labels:
return app.\
labels['HAPROXY_{0}_BACKEND_REDIRECT_HTTP_TO_HTTPS_WITH_PATH']
return self.t['BACKEND_REDIRECT_HTTP_TO_HTTPS_WITH_PATH'].value
def haproxy_backend_hsts_options(self, app):
if 'HAPROXY_{0}_BACKEND_HSTS_OPTIONS' in app.labels:
return app.labels['HAPROXY_{0}_BACKEND_HSTS_OPTIONS']
return self.t['BACKEND_HSTS_OPTIONS'].value
def haproxy_backend_head(self, app):
if 'HAPROXY_{0}_BACKEND_HEAD' in app.labels:
return app.labels['HAPROXY_{0}_BACKEND_HEAD']
return self.t['BACKEND_HEAD'].value
def haproxy_http_frontend_acl(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL']
return self.t['HTTP_FRONTEND_ACL'].value
def haproxy_map_http_frontend_acl(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL']
return self.t['MAP_HTTP_FRONTEND_ACL'].value
def haproxy_http_frontend_acl_only(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY']
return self.t['HTTP_FRONTEND_ACL_ONLY'].value
def haproxy_map_http_frontend_acl_only(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY']
return self.t['MAP_HTTP_FRONTEND_ACL_ONLY'].value
def haproxy_http_frontend_routing_only(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ROUTING_ONLY' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ROUTING_ONLY']
return self.t['HTTP_FRONTEND_ROUTING_ONLY'].value
def haproxy_http_frontend_routing_only_with_auth(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ROUTING_ONLY_WITH_AUTH' in app.labels:
return app.\
labels['HAPROXY_{0}_HTTP_FRONTEND_ROUTING_ONLY_WITH_AUTH']
return self.t['HTTP_FRONTEND_ROUTING_ONLY_WITH_AUTH'].value
def haproxy_http_frontend_acl_with_path(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL_WITH_PATH' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL_WITH_PATH']
return self.t['HTTP_FRONTEND_ACL_WITH_PATH'].value
def haproxy_http_frontend_acl_only_with_path(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY_WITH_PATH' in app.labels:
return app.labels['HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY_WITH_PATH']
return self.t['HTTP_FRONTEND_ACL_ONLY_WITH_PATH'].value
def haproxy_http_frontend_acl_only_with_path_and_auth(self, app):
if 'HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY_WITH_PATH_AND_AUTH'\
in app.labels:
return\
app.\
labels['HAPROXY_{0}_HTTP_FRONTEND_ACL_ONLY_WITH_PATH_AND_AUTH']
return self.t['HTTP_FRONTEND_ACL_ONLY_WITH_PATH_AND_AUTH'].value