[root@master ~]#swapoff -a
[root@master ~]#
[root@master ~]# free -m
total used free shared buff/cache available
Mem: 976 366 135 6 474 393
Swap: 0 0 0
# swap 一栏为0，表示已经关闭了swap
- name: Stop if memory is too small for masters
assert:
that: ansible_memtotal_mb >= 1500
ignore_errors: "{{ ignore_assert_errors }}"
when: inventory_hostname in groups['kube-master']
- name: Stop if memory is too small for nodes
assert:
that: ansible_memtotal_mb >= 1024
ignore_errors: "{{ ignore_assert_errors }}"
when: inventory_hostname in groups['kube-node']
# kubectl get all --namespace=kube-system
NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE
ds/calico-node 3 3 3 3 3 <none> 2h
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deploy/kube-dns 2 2 2 2 2h
deploy/kubedns-autoscaler 1 1 1 1 2h
deploy/kubernetes-dashboard 1 1 1 1 2h
NAME DESIRED CURRENT READY AGE
rs/kube-dns-79d99cdcd5 2 2 2 2h
rs/kubedns-autoscaler-5564b5585f 1 1 1 2h
rs/kubernetes-dashboard-69cb58d748 1 1 1 2h
NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE
ds/calico-node 3 3 3 3 3 <none> 2h
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deploy/kube-dns 2 2 2 2 2h
deploy/kubedns-autoscaler 1 1 1 1 2h
deploy/kubernetes-dashboard 1 1 1 1 2h
NAME DESIRED CURRENT READY AGE
rs/kube-dns-79d99cdcd5 2 2 2 2h
rs/kubedns-autoscaler-5564b5585f 1 1 1 2h
rs/kubernetes-dashboard-69cb58d748 1 1 1 2h
NAME READY STATUS RESTARTS AGE
po/calico-node-22vsg 1/1 Running 0 2h
po/calico-node-t7zgw 1/1 Running 0 2h
po/calico-node-zqnx8 1/1 Running 0 2h
po/kube-apiserver-kube-master-0 1/1 Running 0 22h
po/kube-controller-manager-kube-master-0 1/1 Running 0 2h
po/kube-dns-79d99cdcd5-f2t6t 3/3 Running 0 2h
po/kube-dns-79d99cdcd5-gw944 3/3 Running 0 2h
po/kube-proxy-kube-master-0 1/1 Running 2 22h
po/kube-proxy-kube-node-41 1/1 Running 3 22h
po/kube-proxy-kube-node-42 1/1 Running 3 22h
po/kube-scheduler-kube-master-0 1/1 Running 0 2h
po/kubedns-autoscaler-5564b5585f-lt9bb 1/1 Running 0 2h
po/kubernetes-dashboard-69cb58d748-wmb9x 1/1 Running 0 2h
po/nginx-proxy-kube-node-41 1/1 Running 3 22h
po/nginx-proxy-kube-node-42 1/1 Running 3 22h
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
svc/kube-dns ClusterIP 10.233.0.3 <none> 53/UDP,53/TCP 2h
svc/kubernetes-dashboard ClusterIP 10.233.27.24 <none> 443/TCP 2h
# kubectl get nodes
NAME STATUS ROLES AGE VERSION
kube-master-0 Ready master 22h v1.9.5
kube-node-41 Ready node 22h v1.9.5
kube-node-42 Ready node 22h v1.9.5
# kubectl get cs
NAME STATUS MESSAGE ERROR
scheduler Healthy ok
controller-manager Healthy ok
etcd-0 Healthy {"health": "true"}
# Configure 'ip' variable to bind kubernetes services on a
# different ip than the default iface
# 主机名 ssh登陆IP ssh用户名 ssh登陆密码 机器IP 子网掩码
kube-master-0 ansible_ssh_host=172.16.94.140 ansible_ssh_user=root ansible_ssh_pass=123 ip=172.16.94.140 mask=/24
kube-node-41 ansible_ssh_host=172.16.94.141 ansible_ssh_user=root ansible_ssh_pass=123 ip=172.16.94.141 mask=/24
kube-node-42 ansible_ssh_host=172.16.94.142 ansible_ssh_user=root ansible_ssh_pass=123 ip=172.16.94.142 mask=/24
kube-node-43 ansible_ssh_host=172.16.94.143 ansible_ssh_user=root ansible_ssh_pass=123 ip=172.16.94.143 mask=/24
# configure a bastion host if your nodes are not directly reachable
# bastion ansible_ssh_host=x.x.x.x
[kube-master]
kube-master-0
[etcd]
kube-master-0
[kube-node]
kube-node-41
kube-node-42
kube-node-43
[k8s-cluster:children]
kube-node
kube-master
[calico-rr]
failed: [k8s-node-1] (item={u'name': u'docker-engine-1.13.1-1.el7.centos'}) => {
"attempts": 4,
"changed": false,
...
"item": {
"name": "docker-engine-1.13.1-1.el7.centos"
},
"msg": "Error: docker-ce-selinux conflicts with 2:container-selinux-2.66-1.el7.noarch\n",
"rc": 1,
"results": [
"Loaded plugins: fastestmirror\nLoading mirror speeds from cached hostfile\n * elrepo: mirrors.tuna.tsinghua.edu.cn\n * epel: mirrors.tongji.edu.cn\nPackage docker-engine is obsoleted by docker-ce, trying to install docker-ce-17.03.2.ce-1.el7.centos.x86_64 instead\nResolving Dependencies\n--> Running transaction check\n---> Package docker-ce.x86_64 0:17.03.2.ce-1.el7.centos will be installed\n--> Processing Dependency: docker-ce-selinux >= 17.03.2.ce-1.el7.centos for package: docker-ce-17.03.2.ce-1.el7.centos.x86_64\n--> Processing Dependency: libltdl.so.7()(64bit) for package: docker-ce-17.03.2.ce-1.el7.centos.x86_64\n--> Running transaction check\n---> Package docker-ce-selinux.noarch 0:17.03.2.ce-1.el7.centos will be installed\n---> Package libtool-ltdl.x86_64 0:2.4.2-22.el7_3 will be installed\n--> Processing Conflict: docker-ce-selinux-17.03.2.ce-1.el7.centos.noarch conflicts docker-selinux\n--> Restarting Dependency Resolution with new changes.\n--> Running transaction check\n---> Package container-selinux.noarch 2:2.55-1.el7 will be updated\n---> Package container-selinux.noarch 2:2.66-1.el7 will be an update\n--> Processing Conflict: docker-ce-selinux-17.03.2.ce-1.el7.centos.noarch conflicts docker-selinux\n--> Finished Dependency Resolution\n You could try using --skip-broken to work around the problem\n You could try running: rpm -Va --nofiles --nodigest\n"
]
}
