This PR introduces new environment variable, namely `KUBECACHEDIR`. `KUBECACHEDIR`
is used to override default discovery cache directory for all commands(whose default value
is $HOME/.kube/cache).
`--cache-dir` flag per command has higher precedence than `KUBECACHEDIR` and default
directory path.
When parsing a resolv.conf file that has "search .", parseResolvConf should
accept the "." entry verbatim. Before this commit, parseResolvConf
unconditionally trimmed the "." suffix, which in the case of "." resulted
in a "" entry (that is, the empty string). This empty entry could lead
parseResolvConf to produce a resolv.conf file with "search ". Resolvers
could fail to parse such a resolv.conf file from parseResolvConf, thus
breaking DNS resolution in pods. After this commit, parseResolvConf
accepts a resolv.conf file with "search ." and passes the "." entry through
verbatim to produce a valid resolv.conf file. The "." suffix is still
trimmed for any entry that does not solely comprise ".".
Follow-up to commit a215a88d91.
* pkg/kubelet/network/dns/dns.go (parseResolvConf): Handle a "." entry in
the search path by copying it verbatim.
* pkg/kubelet/network/dns/dns_test.go (TestParseResolvConf): Add a test
case for "search .".
The readonly port could be disabled.
Since we are only using the /healthz endpoint,
we can use the healthz port.
Change-Id: If004f2888ca5847b9e2d8c02d5615bed52d94b24
Add TestInternalExternalMasquerade, which tests whether various
packets are considered internal or external for purposes of traffic
policy, and whether they get masqueraded, with and without
--masquerade-all, with and without a working LocalTrafficDetector.
(This extends and replaces the old TestMasqueradeAll.)
Add a new framework for testing out how particular packets would be
handled by a given set of iptables rules. (eg, "assert that a packet
from 10.180.0.2 to 172.30.0.41:80 gets NATted to 10.180.0.1:80 without
being masqueraded"). Add tests using this to all of the existing unit
tests.
This makes it easier to tell whether a given code change has any
effect on behavior, without having to carefully examine the diffs to
the generated iptables rules.
Once JobReadyPods is enabled, the Job status might be updated at a later stage after the pods are running.
Change-Id: I4c13c9e55ab7e11b1f9428d6cf0a560a41be1c6a
We originally had one HealthCheckNodePort test that used
assertIPTablesRulesEqual() and one that didn't, but later I went
through and made all the tests use assertIPTablesRulesEqual() and
didn't notice that this resulted in there now being two
nearly-identical HealthCheckNodePort tests.
