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kubernetes: provide /etc/resolv.conf to kube and docker containers.

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After #2289 we need to bind /etc/resolv.conf into the docker and kubelet
containers on both node and master.

Also since #2289 the metadata container requires /etc/resolv.conf to be
populated on the host, which means running DHCP earlier in oneshot onboot mode,
do so.

Signed-off-by: Ian Campbell <ijc@docker.com>
This commit is contained in:
Ian Campbell 2017-07-26 15:58:36 +01:00
parent 5194bf13d1
commit dda7d30182
3 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
projects/kubernetes/kube-master.yml
View File

@ -13,6 +13,9 @@ onboot:
image: linuxkit/sysfs:006a65b30cfdd9d751d7ab042fde7eca2c3bc9dc
- name: binfmt
image: linuxkit/binfmt:0bde4ebd422099f45c5ee03217413523ad2223e5
- name: dhcpcd
image: linuxkit/dhcpcd:17423c1ccced74e3c005fd80486e8177841fe02b
command: ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf", "-1"]
- name: metadata
image: linuxkit/metadata:f5d4299909b159db35f72547e4ae70bd76c42c6c
- name: format
@ -32,8 +35,6 @@ services:
- INSECURE=true
- name: rngd
image: linuxkit/rngd:1516d5d70683a5d925fe475eb1b6164a2f67ac3b
- name: dhcpcd
image: linuxkit/dhcpcd:17423c1ccced74e3c005fd80486e8177841fe02b
- name: ntpd
image: linuxkit/openntpd:2874b66c9fa51fa5b4d11c8b50441eb94ee22a5a
- name: sshd
@ -48,6 +49,7 @@ services:
options: ["rw","nosuid","noexec","nodev","relatime"]
binds:
- /dev:/dev
- /etc/resolv.conf:/etc/resolv.conf
- /lib/modules:/lib/modules
- /var:/var:rshared,rbind
- /var/lib/kubeadm:/etc/kubernetes

6
projects/kubernetes/kube-node.yml
View File

@ -13,6 +13,9 @@ onboot:
image: linuxkit/sysfs:006a65b30cfdd9d751d7ab042fde7eca2c3bc9dc
- name: binfmt
image: linuxkit/binfmt:0bde4ebd422099f45c5ee03217413523ad2223e5
- name: dhcpcd
image: linuxkit/dhcpcd:17423c1ccced74e3c005fd80486e8177841fe02b
command: ["/sbin/dhcpcd", "--nobackground", "-f", "/dhcpcd.conf", "-1"]
- name: metadata
image: linuxkit/metadata:f5d4299909b159db35f72547e4ae70bd76c42c6c
- name: format
@ -32,8 +35,6 @@ services:
- INSECURE=true
- name: rngd
image: linuxkit/rngd:1516d5d70683a5d925fe475eb1b6164a2f67ac3b
- name: dhcpcd
image: linuxkit/dhcpcd:17423c1ccced74e3c005fd80486e8177841fe02b
- name: ntpd
image: linuxkit/openntpd:2874b66c9fa51fa5b4d11c8b50441eb94ee22a5a
- name: sshd
@ -48,6 +49,7 @@ services:
options: ["rw","nosuid","noexec","nodev","relatime"]
binds:
- /dev:/dev
- /etc/resolv.conf:/etc/resolv.conf
- /lib/modules:/lib/modules
- /var:/var:rshared,rbind
- /var/lib/kubeadm:/etc/kubernetes

2
projects/kubernetes/kubernetes/Dockerfile
View File

@ -47,4 +47,4 @@ WORKDIR /
ENTRYPOINT ["/usr/bin/kubelet.sh"]
COPY --from=build /out /
ENV KUBECONFIG "/etc/kubernetes/admin.conf"
LABEL org.mobyproject.config='{"binds": ["/dev:/dev", "/var:/var:rshared,rbind", "/var/lib/kubeadm:/etc/kubernetes", "/etc/cni:/rootfs/etc/cni:rshared,rbind", "/opt/cni:/rootfs/opt/cni:rshared,rbind"], "mounts": [{"type": "cgroup", "options": ["rw","nosuid","noexec","nodev","relatime"]}], "capabilities": ["all"], "rootfsPropagation": "shared", "pid": "host"}'
LABEL org.mobyproject.config='{"binds": ["/dev:/dev", "/etc/resolv.conf:/etc/resolv.conf", "/var:/var:rshared,rbind", "/var/lib/kubeadm:/etc/kubernetes", "/etc/cni:/rootfs/etc/cni:rshared,rbind", "/opt/cni:/rootfs/opt/cni:rshared,rbind"], "mounts": [{"type": "cgroup", "options": ["rw","nosuid","noexec","nodev","relatime"]}], "capabilities": ["all"], "rootfsPropagation": "shared", "pid": "host"}'