cucker

## Rebuild flannel on CentOS 8 I have build a docker image for build flannel. ## How to use this image 1. clone flannel repository. 2. pull `cucker/golang` image and...

## Environment * etcd 3.5.0 run on docker * flannerl 0.14.0 ## Cause of this problem * Since etcd 3.4 introduced api v3 as default. * flannel 0.14.0 or lower...

指向nginx代理进行DNS解析的日志，能解析成功，但看日志是没有剔除掉异常的源站： 2018/04/03 15:08:16 [error] 27013#0: *63 recv() failed (111: Connection refused) while proxying connection, udp client: 172.16.12.19, server: 0.0.0.0:53, upstream: "172.16.7.15:53", bytes from/to client:33/0, bytes from/to upstream:0/33 2018/04/03 15:08:17 [error]...

nginx版本：1.12.2，使用ngx_stream_upstream_check_module模块，没有效果，感觉没有自动去检测源站，check_status 也看到不到数据，报500 编译参数： nginx -V nginx version: nginx/1.12.2 built by gcc 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) built with OpenSSL 1.0.2o 27 Mar 2018 TLS SNI support enabled configure arguments:...

访问日志： 2018/04/03 16:40:28 [error] 61697#0: *4 recv() failed (111: Connection refused) while proxying connection, udp client: 172.16.12.19, server: 0.0.0.0:53, upstream: "172.16.7.15:53", bytes from/to client:33/0, bytes from/to upstream:0/33 2018/04/03 16:41:00 [error]...

http://172.16.12.18:17818/status 报500

## sysctl config disable ipv6 Step 1: add this rule in /etc/sysctl.conf : net.ipv6.conf.all.disable_ipv6=1 Step 2: add this rule in /etc/sysconfig/network : NETWORKING_IPV6=no Step 4: disable the ip6tables service :...