Hi
I get the following error when my build server tries to create a network:
cannot create network bfe9abfd499e27a9d771e1f43ee0332d4dcbcfbc26017a6fce4618c3e71af92e (br-bfe9abfd499e): conflicts with network 0564203f5eaec4495ec71a66e034d76707e0751635acf129a580ff32a45e0a4e (br-0564203f5eae): networks have overlapping IPv4
Checking with “docker network ls”, I cannot find a network with the ID (0564203f5eaec4495ec71a66e034d76707e0751635acf129a580ff32a45e0a4e) of the “existing” network. I checked journalctl and found the error:
Dec 18 15:20:03 dockerd[819]: time="2018-12-18T15:20:03.164641457Z" level=error msg="Handler for POST /v1.24/networks/create returned error: Failed to Setup IP tables: Unable to allow intercontainer communication: (iptables failed: iptables --wait -I FORWARD -i br-0564203f5eae -o br-0564203f5eae -j ACCEPT: iptables: Resource temporarily unavailable.\n (exit status 4))"
So dockerd got an error during the creation of the network. It has happened a few times over the last couple of days.
Manually running:
ip link delete br-0564203f5eae type bridge
and restarting the docker service fixed the issue.
Can you help me avoid the issue?
I am runnning “centos-release-7-6.1810.2.el7.centos.x86_64” with docker version
Client:
Version: 18.03.0-ce
API version: 1.37
Go version: go1.9.4
Git commit: 0520e24
Built: Wed Mar 21 23:09:15 2018
OS/Arch: linux/amd64
Experimental: false
Orchestrator: swarm
Server:
Engine:
Version: 18.03.0-ce
API version: 1.37 (minimum version 1.12)
Go version: go1.9.4
Git commit: 0520e24
Built: Wed Mar 21 23:13:03 2018
OS/Arch: linux/amd64
Experimental: false
and docker compose version
1.18.0, build 8dd22a9