From 77d984eb94477f5e170c30318e0d3064d1c953e4 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 3 Mar 2017 11:09:56 -0600 Subject: node/sdn: make /var/lib/cni persistent to ensure IPAM allocations stick around across node restart With the move to a CNI plugin, docker no longer handles IPAM, but CNI does through openshift-sdn's usage of the 'host-local' CNI IPAM plugin. That plugin stores IPAM allocations under /var/lib/cni/. If the node container gets restarted, without presreving /var/lib/cni, the IPs currently allocated to running pods get lost and on restart, openshift-sdn may allocate those IPs to new pods causing duplicate allocations. This never happened with docker because it has its own persistent IPAM store that does not get removed when docker restarts. Also because (historically) when docker restarted, all the containers died and the IP allocations were released by the daemon. Fix this by ensuring that IPAM allocations (which are tied to the life of the pod, *not* the life of the openshift-node process) persist even if the openshift-node process restarts. Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1427789 --- roles/openshift_node/templates/openshift.docker.node.service | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'roles/openshift_node') diff --git a/roles/openshift_node/templates/openshift.docker.node.service b/roles/openshift_node/templates/openshift.docker.node.service index e33d5d497..6ec88f85e 100644 --- a/roles/openshift_node/templates/openshift.docker.node.service +++ b/roles/openshift_node/templates/openshift.docker.node.service @@ -15,7 +15,7 @@ After={{ openshift.common.service_type }}-node-dep.service EnvironmentFile=/etc/sysconfig/{{ openshift.common.service_type }}-node EnvironmentFile=/etc/sysconfig/{{ openshift.common.service_type }}-node-dep ExecStartPre=-/usr/bin/docker rm -f {{ openshift.common.service_type }}-node -ExecStart=/usr/bin/docker run --name {{ openshift.common.service_type }}-node --rm --privileged --net=host --pid=host --env-file=/etc/sysconfig/{{ openshift.common.service_type }}-node -v /:/rootfs:ro -e CONFIG_FILE=${CONFIG_FILE} -e OPTIONS=${OPTIONS} -e HOST=/rootfs -e HOST_ETC=/host-etc -v {{ openshift.common.data_dir }}:{{ openshift.common.data_dir }}{{ ':rslave' if openshift.docker.gte_1_10 | default(False) | bool else '' }} -v {{ openshift.common.config_base }}/node:{{ openshift.common.config_base }}/node {% if openshift_cloudprovider_kind | default('') != '' -%} -v {{ openshift.common.config_base }}/cloudprovider:{{ openshift.common.config_base}}/cloudprovider {% endif -%} -v /etc/localtime:/etc/localtime:ro -v /etc/machine-id:/etc/machine-id:ro -v /run:/run -v /sys:/sys:rw -v /sys/fs/cgroup:/sys/fs/cgroup:rw -v /usr/bin/docker:/usr/bin/docker:ro -v /var/lib/docker:/var/lib/docker -v /lib/modules:/lib/modules -v /etc/origin/openvswitch:/etc/openvswitch -v /etc/origin/sdn:/etc/openshift-sdn -v /etc/systemd/system:/host-etc/systemd/system -v /var/log:/var/log -v /dev:/dev $DOCKER_ADDTL_BIND_MOUNTS {{ openshift.node.node_image }}:${IMAGE_VERSION} +ExecStart=/usr/bin/docker run --name {{ openshift.common.service_type }}-node --rm --privileged --net=host --pid=host --env-file=/etc/sysconfig/{{ openshift.common.service_type }}-node -v /:/rootfs:ro -e CONFIG_FILE=${CONFIG_FILE} -e OPTIONS=${OPTIONS} -e HOST=/rootfs -e HOST_ETC=/host-etc -v {{ openshift.common.data_dir }}:{{ openshift.common.data_dir }}{{ ':rslave' if openshift.docker.gte_1_10 | default(False) | bool else '' }} -v {{ openshift.common.config_base }}/node:{{ openshift.common.config_base }}/node {% if openshift_cloudprovider_kind | default('') != '' -%} -v {{ openshift.common.config_base }}/cloudprovider:{{ openshift.common.config_base}}/cloudprovider {% endif -%} -v /etc/localtime:/etc/localtime:ro -v /etc/machine-id:/etc/machine-id:ro -v /run:/run -v /sys:/sys:rw -v /sys/fs/cgroup:/sys/fs/cgroup:rw -v /usr/bin/docker:/usr/bin/docker:ro -v /var/lib/docker:/var/lib/docker -v /lib/modules:/lib/modules -v /etc/origin/openvswitch:/etc/openvswitch -v /etc/origin/sdn:/etc/openshift-sdn -v /var/lib/cni:/var/lib/cni -v /etc/systemd/system:/host-etc/systemd/system -v /var/log:/var/log -v /dev:/dev $DOCKER_ADDTL_BIND_MOUNTS {{ openshift.node.node_image }}:${IMAGE_VERSION} ExecStartPost=/usr/bin/sleep 10 ExecStop=/usr/bin/docker stop {{ openshift.common.service_type }}-node SyslogIdentifier={{ openshift.common.service_type }}-node -- cgit v1.2.3