View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0018065 | CentOS-8 | kernel | public | 2021-02-12 13:36 | 2021-02-12 13:36 |
| Reporter | gzohop | Assigned To | |||
| Priority | normal | Severity | major | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | x86_64 | OS | Centos 8 | OS Version | CentOS Linux rel |
| Product Version | 8.3.2011 | ||||
| Summary | 0018065: Docker swarm overlay network not working on kernel version 4.18.0-240.10.1.el8_3 | ||||
| Description | After upgrade to kernel version 4.18.0-240.10.1.el8_3, overlay network stops working. Just ping packets seem to work ok: 16:35:55.634830 IP 10.156.105.15.44774 > 10.156.105.13.4789: VXLAN, flags [I] (0x08), vni 4098 IP 10.0.2.74 > 10.0.2.63: ICMP echo request, id 25, seq 1370, length 64 16:35:55.634840 IP 10.156.105.13.39686 > 10.156.105.15.4789: VXLAN, flags [I] (0x08), vni 4098 IP 10.0.2.63 > 10.0.2.74: ICMP echo reply, id 25, seq 1368, length 64 Other traffic looks like this on that VM: 16:33:21.734503 IP 10.156.105.15.41381 > 10.156.105.13.4789: VXLAN, flags [I] (0x08), vni 4098 IP 10.0.2.74.41196 > 10.0.2.63.8080: Flags [S], seq 1098606349, win 28200, options [mss 1410,sackOK,TS val 1616949364 ecr 0,nop,wscale 7], length 0 16:33:22.749372 IP 10.156.105.15.33884 > 10.156.105.13.4789: VXLAN, flags [I] (0x08), vni 4098 IP 10.0.2.74.41196 > 10.0.2.63.8080: Flags [S], seq 1098606349, win 28200, options [mss 1410,sackOK,TS val 1616950378 ecr 0,nop,wscale 7], length 0 16:33:24.797371 IP 10.156.105.15.57394 > 10.156.105.13.4789: VXLAN, flags [I] (0x08), vni 4098 IP 10.0.2.74.41196 > 10.0.2.63.8080: Flags [S], seq 1098606349, win 28200, options [mss 1410,sackOK,TS val 1616952426 ecr 0,nop,wscale 7], length 0 16:33:28.829381 IP 10.156.105.15.39480 > 10.156.105.13.4789: VXLAN, flags [I] (0x08), vni 4098 But that traffic is not leaving network interface. (capture on vmware vswitch in promiscuous mode does not see that traffic, and it does capture on kernel version 4.18.0-193.6.3.el8_2.x86_64) After downgrade to kernel version 4.18.0-193.6.3.el8_2.x86_64 traffic is working fine. | ||||
| Steps To Reproduce | Update kernel on one node of docker swarm from version 4.18.0-193.6.3.el8_2.x86_64 to 4.18.0-240.10.1.el8_3. After upgrade any traffic other than icmp ping stops working from that node, downgrading fixes problem. | ||||
| Tags | No tags attached. | ||||
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2021-02-12 13:36 | gzohop | New Issue |
