Change Container Linux etcd-member to fetch with docker://

* Quay has historically generated ACI signatures for images to
facilitate rkt's notions of verification (it allowed authors to
actually sign images, though `--trust-keys-from-https` is in use
since etcd and most authors don't sign images). OCI standardization
didn't adopt verification ideas and checking signatures has fallen
out of favor.
* Fix an issue where Quay no longer seems to be generating ACI
signatures for new images (e.g. quay.io/coreos/etcd:v.3.4.4)
* Don't be alarmed by rkt `--insecure-options=image`. It refers
to disabling image signature checking (i.e. docker pull doesn't
check signatures either)
* System containers for Kubelet and bootstrap have transitioned
to the docker:// transport, so there is precedent and this brings
all the system containers on Container Linux controllers into
alignment

CHANGES.md

@@ -5,6 +5,7 @@ Notable changes between versions.
 ## Latest
 
 * Update etcd from v3.4.3 to [v3.4.4](https://github.com/etcd-io/etcd/releases/tag/v3.4.4)
+  * On Container Linux, fetch using the docker transport format ([#659](https://github.com/poseidon/typhoon/pull/659))
 * Update CoreDNS from v1.6.6 to v1.6.7 ([#648](https://github.com/poseidon/typhoon/pull/648))
 
 #### AWS

aws/container-linux/kubernetes/cl/controller.yaml

@@ -8,6 +8,8 @@ systemd:
           contents: |
             [Service]
             Environment="ETCD_IMAGE_TAG=v3.4.4"
+            Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
+            Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
             Environment="ETCD_ADVERTISE_CLIENT_URLS=https://${etcd_domain}:2379"
             Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"

azure/container-linux/kubernetes/cl/controller.yaml

@@ -8,6 +8,8 @@ systemd:
           contents: |
             [Service]
             Environment="ETCD_IMAGE_TAG=v3.4.4"
+            Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
+            Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
             Environment="ETCD_ADVERTISE_CLIENT_URLS=https://${etcd_domain}:2379"
             Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"

bare-metal/container-linux/kubernetes/cl/controller.yaml

@@ -8,6 +8,8 @@ systemd:
           contents: |
             [Service]
             Environment="ETCD_IMAGE_TAG=v3.4.4"
+            Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
+            Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
             Environment="ETCD_ADVERTISE_CLIENT_URLS=https://${domain_name}:2379"
             Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${domain_name}:2380"

digital-ocean/container-linux/kubernetes/cl/controller.yaml

@@ -8,6 +8,8 @@ systemd:
           contents: |
             [Service]
             Environment="ETCD_IMAGE_TAG=v3.4.4"
+            Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
+            Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
             Environment="ETCD_ADVERTISE_CLIENT_URLS=https://${etcd_domain}:2379"
             Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"

google-cloud/container-linux/kubernetes/cl/controller.yaml

@@ -8,6 +8,8 @@ systemd:
           contents: |
             [Service]
             Environment="ETCD_IMAGE_TAG=v3.4.4"
+            Environment="ETCD_IMAGE_URL=docker://quay.io/coreos/etcd"
+            Environment="RKT_RUN_ARGS=--insecure-options=image"
             Environment="ETCD_NAME=${etcd_name}"
             Environment="ETCD_ADVERTISE_CLIENT_URLS=https://${etcd_domain}:2379"
             Environment="ETCD_INITIAL_ADVERTISE_PEER_URLS=https://${etcd_domain}:2380"