jeans/supervisor
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Use own coredns for supervisor

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This commit is contained in:
Pascal Vizeli 2019-08-15 08:51:42 +00:00
parent 2480c83169
commit b6c81d779a
1 changed files with 33 additions and 1 deletions
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34
hassio/dns.py
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@ -19,6 +19,7 @@ from .validate import SCHEMA_DNS_CONFIG
_LOGGER = logging.getLogger(__name__)
COREDNS_TMPL: Path = Path(__file__).parents[0].joinpath("data/coredns.tmpl")
RESOLV_CONF: Path = Path("/etc/resolv.conf")
class CoreDNS(JsonConfig, CoreSysAttributes):
@ -100,6 +101,9 @@ class CoreDNS(JsonConfig, CoreSysAttributes):
# Start DNS forwarder
self.sys_create_task(self.forwarder.start(self.sys_docker.network.dns))
with suppress(CoreDNSError):
self._update_local_resolv()
# Start is not Running
if await self.instance.is_running():
return
@ -293,7 +297,7 @@ class CoreDNS(JsonConfig, CoreSysAttributes):
"""
return self.instance.is_fails()
async def repair(self):
async def repair(self) -> None:
"""Repair CoreDNS plugin."""
if await self.instance.exists():
return
@ -303,3 +307,31 @@ class CoreDNS(JsonConfig, CoreSysAttributes):
await self.instance.install(self.version)
except DockerAPIError:
_LOGGER.error("Repairing of CoreDNS fails")
def _update_local_resolv(self) -> None:
"""Update local resolv file."""
resolv_lines: List[str] = []
nameserver = f"nameserver {self.sys_docker.network.dns!s}"
# Read resolv config
try:
with RESOLV_CONF.open("r") as resolv:
for line in resolv.readlines():
resolv_lines.append(line)
except OSError as err:
_LOGGER.error("Can't read local resolve: %s", err)
raise CoreDNSError() from None
if nameserver in resolv_lines:
return
_LOGGER.info("Update resolv from Supervisor")
# Write config back to resolv
resolv_lines.append(nameserver)
try:
with RESOLV_CONF.open("w") as resolv:
for line in resolv_lines:
resolv.write(line)
except OSError as err:
_LOGGER.error("Can't write local resolve: %s", err)
raise CoreDNSError() from None