法兰绒和码头工人没有开始

Question

我正在尝试使用http://severalnines.com/blog/installing-kubernetes-cluster-minions-centos7-manage-pods-services上的指南在2个节点(centos 7.1)上设置kubernetes集群.但是,当我尝试像这样开始使用minion上的服务时:

for SERVICES in kube-proxy kubelet docker flanneld; do
    systemctl restart $SERVICES
    systemctl enable $SERVICES
    systemctl status $SERVICES 
done

我收到以下错误:

-- Logs begin at Wed 2015-12-23 13:00:41 UTC, end at Wed 2015-12-23 16:03:54 UTC. --
Dec 23 16:03:47 sc-test2 systemd[1]: docker-storage-setup.service: main process exited, code=exited, status=1/FAILURE
Dec 23 16:03:47 sc-test2 systemd[1]: Failed to start Docker Storage Setup.
-- Subject: Unit docker-storage-setup.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit docker-storage-setup.service has failed.
-- 
-- The result is failed.
Dec 23 16:03:47 sc-test2 systemd[1]: Unit docker-storage-setup.service entered failed state.
Dec 23 16:03:48 sc-test2 flanneld[36477]: E1223 16:03:48.187350 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
Dec 23 16:03:49 sc-test2 flanneld[36477]: E1223 16:03:49.189860 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
Dec 23 16:03:50 sc-test2 flanneld[36477]: E1223 16:03:50.192894 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
Dec 23 16:03:51 sc-test2 flanneld[36477]: E1223 16:03:51.194940 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
Dec 23 16:03:52 sc-test2 flanneld[36477]: E1223 16:03:52.197222 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
Dec 23 16:03:53 sc-test2 flanneld[36477]: E1223 16:03:53.199248 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)
Dec 23 16:03:54 sc-test2 flanneld[36477]: E1223 16:03:54.201160 36477 network.go:53] Failed to retrieve network config: 100: Key not found (/atomic.io)

我确定我在主设备上设置了密钥:etcdctl mk /coreos.com/network/config'{"Network":"172.17.0.0/16"}'

到目前为止安装似乎是使用kubernetes最难的一点:(

Answer 1

今天的圣诞节,但我花了一整天努力让这个工作:)这就是我做的:

#1 FLANNEL

如上所述,我在主人身上设置法兰绒etcd键:

etcdctl mk /coreos.com/network/config '{"Network":"172.17.0.0/16"}'

但是当我试图在奴才上开始法兰绒时我得到了这个错误:

Failed to retrieve network config: 100: Key not found (/atomic.io)

所以我编辑/etc/sysconfig/flanneld了minion上的文件:

# Flanneld configuration options  

# etcd url location.  Point this to the server where etcd runs
FLANNEL_ETCD="http://master:2379"

# etcd config key.  This is the configuration key that flannel queries
# For address range assignment
FLANNEL_ETCD_KEY="/coreos.com/network"

# Any additional options that you want to pass
#FLANNEL_OPTIONS=""

to:

# Flanneld configuration options  

# etcd url location.  Point this to the server where etcd runs
FLANNEL_ETCD="http://master:2379"

# etcd config key.  This is the configuration key that flannel queries
# For address range assignment
FLANNEL_ETCD_KEY="/atomic.io/network"

# Any additional options that you want to pass
#FLANNEL_OPTIONS=""

即更改了FLANNEL_ETCD键.

在这之后systemctl start flanneld工作.

#2 DOCKER

我找不到通过kubernetes工作将版本作为依赖项安装的方法,因此我卸载了它并按照Centos安装的docker-engine的docker文档并手动为systemctl创建了docker.service文件.

cd /usr/lib/systemd/system

和docker.service的内容:

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network.target docker.socket
Requires=docker.socket
Requires=flanneld.service
After=flanneld.service

[Service]
EnvironmentFile=/etc/sysconfig/flanneld
ExecStart=/usr/bin/docker daemon -H fd:// --bip=${FLANNEL_SUBNET}
Restart=on-failure
RestartSec=5


[Install]
WantedBy=multi-user.target

然后启动并启用带有systemctl的守护进程以及查询状态.

systemctl restart docker
systemctl enable docker
systemctl status docker