networking - Network issues with docker containers having specific IP -


problem

i have problem 1 ip address (172.17.0.11) in docker network. whenever container gets ip, outbound connections container stop working. when kill container:

  • i still can ping ip despite no 1 using it
  • there no rules in iptables associated ip
  • i see lot of established connections docker-proxy in netstat ip @ same time, other ips list dangling connections don't have issues

it looks ip conflict me – curl doesn't work, wget , ping work because re-establish connection every time. not dns issue, curl ip doesn't work well, docker image used makes no difference.

infrastructure

it's single server setup on debian 8 (4.9 kernel) kubernetes 1.6.4 , docker-ce 17.06.1 (overlay2). issue happened after upgraded 1.12.6 17.06.1

please me debug issue.

docker version:

client:  version:      17.06.1-ce  api version:  1.30  go version:   go1.8.3  git commit:   874a737  built:        thu aug 17 22:53:31 2017  os/arch:      linux/amd64  server:  version:      17.06.1-ce  api version:  1.30 (minimum version 1.12)  go version:   go1.8.3  git commit:   874a737  built:        thu aug 17 22:51:25 2017  os/arch:      linux/amd64  experimental: false

docker info:

containers: 336  running: 336  paused: 0  stopped: 0 images: 52 server version: 17.06.1-ce storage driver: overlay2  backing filesystem: extfs  supports d_type: true  native overlay diff: true logging driver: json-file cgroup driver: cgroupfs plugins:  volume: local  network: bridge host macvlan null overlay  log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog swarm: inactive runtimes: runc default runtime: runc init binary: docker-init containerd version: 6e23458c129b551d5c9871e5174f6b1b7f6d1170 runc version: 810190ceaa507aa2727d7ae6f4790c76ec150bd2 init version: 949e6fa kernel version: 4.9.0-0.bpo.3-amd64 operating system: debian gnu/linux 8 (jessie) ostype: linux architecture: x86_64 cpus: 8 total memory: 28.76gib name: host id: qy6i:ji2s:bopg:fiqp:yebb:3uyf:n3g2:cocq:px7z:qrcv:gien:fgqc docker root dir: /var/lib/docker debug mode (client): false debug mode (server): false registry: https://index.docker.io/v1/ experimental: false insecure registries:  127.0.0.0/8 live restore enabled: false

did try rebooting faulty node ? looks namespace/bridge configuration might have gotten stuck.


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