Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. The HBONE port and the redirected probe
source are ISTIO CONSTANTS, not standards, so they move from template literals
into values with documented defaults - an operator can then correct them when
Istio changes a number, without waiting for a chart release.
One object under one "enabled", so the two halves still cannot be set
separately; two values could drift apart, which is what this design exists to
prevent. Every read is null-safe (#99), so a deleted object or one carrying
only "enabled: true" falls back to the defaults declared here rather than
dereferencing nil - the defect #136 shipped one value away.
Provenance now written on each constant: 15008 is Istio's HBONE port, not
IANA-registered for this and unknown to Kubernetes; 169.254.7.127 is link-local
(RFC 3927, never routed), its IPv6 counterpart carries the same digits plus
1337, and neither the NetworkPolicy API nor the kubelet knows the address -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6, and a change in either fails silently.
The exception in ci/run-networkpolicy-test.sh stays pinned to the numbers that
test names, and additionally asserts this chart declares the same defaults -
never "whatever the value says", which would let a mistyped port in through a
configurable field.
No version change: nothing is published yet, the default is still off, and the
render at defaults is byte-identical - re-diffed against origin/main.
Gitea #143, maintainer's instruction. Both numbers this switch renders are
ISTIO CONSTANTS rather than standards, and a value with a documented default
is the better home for a vendor constant than a template literal: an operator
can correct it when Istio changes the number, without waiting for a chart
release.
networkPolicy:
ingress:
ambientMesh:
enabled: false
port: 15008
redirectedProbeSources:
- 169.254.7.127/32
One object under one switch, so the coupling argument survives the change
instead of being undermined by it - two separate values could drift apart,
which is the thing this design exists to prevent. redirectedProbeSources is a
LIST because a dual-stack cluster needs BOTH of Istio's addresses at once, not
one of two; that is a nameable case rather than speculation, so it does not
contradict reason 4 of the issue. Istio's IPv6 counterpart is documented as the
dual-stack addition, with the reason it is absent today unchanged: SingleStack
IPv4, and an ipBlock of the wrong family is accepted and matches nothing.
Named redirectedProbeSources, not probeSources, because the confusion risk with
networkPolicy.probeSources one level up is larger than the ingress/
ingressController one: that value holds YOUR worker node CIDRs, is empty by
default and means OPEN when empty; this one holds ISTIO's rewrite address and
ships filled, because unlike the node IPs it is a constant the chart can know.
The distinction is written where both appear.
PROVENANCE, which the previous round explained the coupling of but never
attributed. 15008 is Istio's HBONE port - not IANA-registered for this, not
prescribed by any protocol, unknown to Kubernetes. 169.254.7.127 is link-local
(169.254.0.0/16, RFC 3927, never routed - the range one picks vendor magic out
of); Istio's IPv6 counterpart fd16:9254:7127:1337:ffff:ffff:ffff:ffff carries
the same digits plus 1337, which is what vendor constants look like; and
Kubernetes knows the address in neither the NetworkPolicy API nor the kubelet -
only Istio's data plane rewrites the probe source onto it. Both read for
ztunnel 1.30.6. If either changes, the failure is SILENT: a pod unreachable in
the mesh, or probes dropped where probeSources is non-empty, which is nowhere
today.
NULL-SAFE, per #99 and because #136 shipped this exact defect one value away
(its NOTES.txt branch dereferenced .networkPolicy.egress directly): every read
goes through a fallback reproducing the chart's own declared defaults, so a
deleted object or one carrying only "enabled: true" renders the defaults rather
than failing. Clearing the probe-source list restores the constant instead of
removing the ipBlock, deliberately - the halves are not separable, and
enabled: false is how you open nothing.
THE CONSEQUENCE, and it is the point of the CI half. With the port
configurable, the exception can no longer be checked against the rendered
value: "whatever the value says" is design A's hole wearing design C's name,
and a mistyped port would pass by sitting in the configurable field. So the
expectation is PINNED IN THE TEST - AMBIENT_PORT and AMBIENT_CIDR - and
assertion 7 now checks two things instead of one: that the render at chart
defaults produces exactly that port and that ipBlock, and that every chart's
values.yaml DECLARES the same defaults, read back through ci/yaml2json rather
than by regex. A chart that drifts is red. Changing an Istio constant means
touching 30 values files AND the pinned lines, and the pinned lines are what
force someone to look.
That block is therefore also the single place saying what we hold Istio's
numbers to be, so it carries the provenance too. The renders set only
enabled=true and never a port override, on purpose: the pin is a statement
about the defaults we ship, not about what a release may choose - an operator
overriding a value is outside this test's reach, as for every value here.
The declared-defaults check is conditional on the chart offering probeSources,
like the inseparability check and assertion 4: the five charts whose probe rule
is never source-restricted render no ipBlock, so for them the key must be
ABSENT - a value reaching no rule reads as a control that does nothing - and
that absence is asserted rather than tolerated. Their schemas drop it too.
No version change: nothing of this is published, the switch stays additive with
its default off, and the render at defaults is byte-identical - re-diffed per
chart against origin/main, not assumed.
Gitea #143. Section 15 gets the switch itself - what it renders, why its two
halves are one value, and the two things it does not prove - plus the three
names that overlap as substrings (ingress, networkPolicy.ingress,
networkPolicy.ingressController), because a search for "ingress" matches all
three and one run during this work mistook the third for an inbound escape
hatch on that basis alone.
The render-test section gets assertion 7 as a table row, the re-measured
figures (30 charts, 333 assertions, ~25s), and the six fail paths that were
executed - including the two that are only visible to it: an ungated ipBlock,
which assertion 2 cannot see because it never looks at "from" peers, and a
value declared in the schema but missing from values.yaml, which a --set
render alone would accept.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Port half only: this chart offers no networkPolicy.probeSources - its probes
put no packet on the network - so there is no redirected probe to allow and an
ipBlock for one would match nothing while making the rule look like it did
something. ci/run-networkpolicy-test.sh ties that exemption to the absence of
probeSources, not to a chart name.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Port half only: this chart offers no networkPolicy.probeSources - its probes
put no packet on the network - so there is no redirected probe to allow and an
ipBlock for one would match nothing while making the rule look like it did
something. ci/run-networkpolicy-test.sh ties that exemption to the absence of
probeSources, not to a chart name.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Port half only: this chart offers no networkPolicy.probeSources - its probes
put no packet on the network - so there is no redirected probe to allow and an
ipBlock for one would match nothing while making the rule look like it did
something. ci/run-networkpolicy-test.sh ties that exemption to the absence of
probeSources, not to a chart name.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Port half only: this chart offers no networkPolicy.probeSources - its probes
put no packet on the network - so there is no redirected probe to allow and an
ipBlock for one would match nothing while making the rule look like it did
something. ci/run-networkpolicy-test.sh ties that exemption to the absence of
probeSources, not to a chart name.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Port half only: this chart offers no networkPolicy.probeSources - its probes
put no packet on the network - so there is no redirected probe to allow and an
ipBlock for one would match nothing while making the rule look like it did
something. ci/run-networkpolicy-test.sh ties that exemption to the absence of
probeSources, not to a chart name.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Five charts offer no networkPolicy.probeSources - their probes are
exec probes and put no packet on the network - so for them 169.254.7.127/32
would be an ipBlock that matches nothing, which is exactly the strict-looking
empty rule this script exists to catch. Assertion 7 now exempts them on the
absence of that value, the same conditionality assertion 4 and the overlay
guard already use, and records the exemption as a held assertion rather than
as silence.
Also names two limits of assertion 7 in its header: assertions 1, 3, 4 and 5
are not re-run on the switched-on render, and assertion 3's omission is the
interesting one - with probeSources empty, 15008 sits in a rule with no
"from" that neither of assertion 3's two justifications covers. Teaching it a
third would mean writing a rule against a guess, because where ztunnel dials
from cannot be settled until a namespace joins the mesh.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders against origin/main rather
than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. Ambient does not bypass NetworkPolicy enforcement, so without the
port a pod whose namespace has joined the mesh is unreachable.
The two halves are one value because the second is the one nobody thinks of:
15008 added by hand leaves a policy that passes review and drops every probe
the first time probeSources is narrowed, and a pod that never becomes Ready
reads as a broken application rather than as a policy.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. Additive, default false, so the render is byte-identical to the
previous release - proven by diffing both renders rather than asserted.
Switched on it adds 15008/TCP, ztunnel's HBONE tunnel, to the rule carrying
the probe port, and - inside that rule's source-restricted branch -
169.254.7.127/32, the address the kubelet's probes arrive from once the pod is
in the mesh. The two halves are one value because the second is the one nobody
thinks of: 15008 added by hand leaves a policy that passes review and drops
every probe the first time probeSources is narrowed.
Minor, not major: additive value, unchanged default, unchanged render.
Gitea #143. A pod cannot be reached inside Istio's ambient mesh unless its
NetworkPolicy lets ztunnel's HBONE tunnel in - ambient explicitly does not
bypass policy enforcement - and 15008 is deliberately no containerPort of the
application, so assertion 2 of ci/run-networkpolicy-test.sh rejected it.
The switch is a named intention rather than a free port list, and it renders
two things that cannot be had separately: 15008/TCP inbound, and - where
probeSources is non-empty - 169.254.7.127/32 as an additional peer, because
inside the mesh the kubelet's probes are redirected away from the worker
node's address. Whoever opens 15008 by hand has not added the probe address,
and the first narrowed probeSources then drops every probe: the pod never
becomes Ready and the symptom reads as a broken application. That is
assertion 4 of the same script, one value further along.
Assertion 2 keeps its edge. It gets ONE named exception for ONE port number,
gated on one value, and it is not granted in the main loop at all - which
renders every chart with the value at its default, so 15008 stays an ordinary
failure there. The free-port variant was design A of #143 and would have
opened the assertion for all 30 charts.
Assertion 7 holds the exception to five things on two renders per chart:
the port and the ipBlock are absent while the switch is off, 15008 is present
while it is on, 15008 is still the ONLY ingress port that is not a
containerPort, and wherever the rule carrying it restricts sources it also
carries the ipBlock. The last one is reachable because these renders apply
ci/networkpolicy/<chart>.yaml, where probeSources is non-empty.
Built into the existing script, as for #136: the exception weakens assertion 2
and belongs beside it - a separate script could go green while the exception
it is paired with is wrong, with nothing connecting the two. The job already
runs over every chart on every pull request.
Found by running it: the policy's name comes from Chart.yaml's name, not from
the directory - template-chart is called "xxx".
Not proven, and said so in values.yaml, the template header and the script's
header: that 15008 alone suffices comes from Istio's documentation, and the
probe-source half reaches no release, because probeSources is empty in every
chart here. No namespace of this cluster carries istio.io/dataplane-mode, so
there is no path on which either could be measured. What is proven is the
render and the assertions.
Pre-existing, and corrected here rather than left because the third item is the
mail rule this PR rewrites. values.yaml already said THREE.
Part of #136
jklein
jlab-renovate-bot
