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status checks: check that PRIMARY_HOSTNAME's AAAA record is working

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This commit is contained in:
Joshua Tauberer 2015-12-07 09:08:00 -05:00
parent fdad83a1bb
commit c4f00626ef
2 changed files with 10 additions and 9 deletions
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2
CHANGELOG.md
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@ -10,7 +10,7 @@ Mail:
Control panel:
* When IPv6 is enabled, check that system services are accessible over IPv6 too and that reverse DNS is setup correctly for the IPv6 address.
* When IPv6 is enabled, check that system services are accessible over IPv6 too, that the box's hostname resolves over IPv6, and that reverse DNS is setup correctly for IPv6.
* Explanatory text for setting up secondary nameserver is added/fixed.
* DNS checks now have a timeout in case a DNS server is not responding, so the checks don't stall indefinitely.
* Better messages if external DNS is used and, weirdly, custom secondary nameservers are set.

17
management/status_checks.py
View file

@ -316,6 +316,7 @@ def check_primary_hostname_dns(domain, env, output, dns_domains, dns_zonefiles):
ip = query_dns(domain, "A")
ns_ips = query_dns("ns1." + domain, "A") + '/' + query_dns("ns2." + domain, "A")
my_ips = env['PUBLIC_IP'] + ((" / "+env['PUBLIC_IPV6']) if env.get("PUBLIC_IPV6") else "")
# Check that the ns1/ns2 hostnames resolve to A records. This information probably
# comes from the TLD since the information is set at the registrar as glue records.
@ -338,23 +339,23 @@ def check_primary_hostname_dns(domain, env, output, dns_domains, dns_zonefiles):
public DNS to update after a change."""
% (env['PRIMARY_HOSTNAME'], env['PRIMARY_HOSTNAME'], env['PUBLIC_IP'], ns_ips))
# Check that PRIMARY_HOSTNAME resolves to PUBLIC_IP in public DNS.
if ip == env['PUBLIC_IP']:
output.print_ok("Domain resolves to box's IP address. [%s ↦ %s]" % (env['PRIMARY_HOSTNAME'], env['PUBLIC_IP']))
# Check that PRIMARY_HOSTNAME resolves to PUBLIC_IP[V6] in public DNS.
ipv6 = query_dns(domain, "AAAA") if env.get("PUBLIC_IPV6") else None
if ip == env['PUBLIC_IP'] and ipv6 in (None, env['PUBLIC_IPV6']):
output.print_ok("Domain resolves to box's IP address. [%s ↦ %s]" % (env['PRIMARY_HOSTNAME'], my_ips))
else:
output.print_error("""This domain must resolve to your box's IP address (%s) in public DNS but it currently resolves
to %s. It may take several hours for public DNS to update after a change. This problem may result from other
issues listed here."""
% (env['PUBLIC_IP'], ip))
issues listed above."""
% (my_ips, ip + ((" / " + ipv6) if ipv6 is not None else "")))
# Check reverse DNS matches the PRIMARY_HOSTNAME. Note that it might not be
# a DNS zone if it is a subdomain of another domain we have a zone for.
existing_rdns_v4 = query_dns(dns.reversename.from_address(env['PUBLIC_IP']), "PTR")
existing_rdns_v6 = query_dns(dns.reversename.from_address(env['PUBLIC_IPV6']), "PTR") if env.get("PUBLIC_IPV6") else None
if existing_rdns_v4 == domain and existing_rdns_v6 in (None, domain):
output.print_ok("Reverse DNS is set correctly at ISP. [%s ↦ %s]" % (
env['PUBLIC_IP'] + (("/"+env['PUBLIC_IPV6']) if env.get("PUBLIC_IPV6") else ""),
env['PRIMARY_HOSTNAME']))
output.print_ok("Reverse DNS is set correctly at ISP. [%s ↦ %s]" % (my_ips, env['PRIMARY_HOSTNAME']))
elif existing_rdns_v4 == existing_rdns_v6 or existing_rdns_v6 is None:
output.print_error("""Your box's reverse DNS is currently %s, but it should be %s. Your ISP or cloud provider will have instructions
on setting up reverse DNS for your box.""" % (existing_rdns_v4, domain) )