openshift 3.11安装部署

openshift 3.11 安装部署

openshift安装部署

1 环境准备(所有节点)

openshift 版本 v3.11

1.1 机器环境

ip              cpu  mem   hostname  OSsystem
192.168.1.130    4    16   master　　CentOS7.6
192.168.1.132    2    4    node01　　CentOS7.6
192.168.1.135    2    4    node02　　CentOS7.6

1.2 免密码ssh登陆

ssh-keygen
ssh-copy-id 192.168.1.130
ssh-copy-id 192.168.1.132
ssh-copy-id 192.168.1.135

1.3 hosts解析

vim /etc/hosts
192.168.1.130 master
192.168.1.132 node01
192.168.1.135 node02
---------------------
scp -rp /etc/hosts 192.168.1.132:/etc/hosts
scp -rp /etc/hosts 192.168.1.135:/etc/hosts

1.4 selinux和关闭防火墙

#sed -i 's/SELINUX=.*/SELINUX=enforcing/' /etc/selinux/config

#sed -i 's/SELINUXTYPE=.*/SELINUXTYPE=targeted/' /etc/selinux/config

开放8443端口给openshift，api使用

/sbin/iptables -I INPUT -p tcp --dport 8443 -j ACCEPT &&\ service iptables save

1.2.3 安装需要的软件包

yum install -y wget git ntp net-tools bind-utils iptables-services bridge-utils bash-completion kexec-tools sos psacct nfs-utils yum-utils docker NetworkManager

1.2.4 其他

sysctl net.ipv4.ip_forward=1
yum install pyOpenSSL httpd-tools -y
systemctl start NetworkManager
systemctl enable NetworkManager

配置镜像加速器
echo '{
   "insecure-registries": ["172.30.0.0/16"],
   "registry-mirrors": ["https://xxxxx.mirror.aliyuncs.com"]
}' >/etc/docker/daemon.json

systemctl daemon-reload && \
systemctl enable docker && \
systemctl restart docker

1.2.5 镜像下载

#master镜像列表(主节点)
echo 'docker.io/cockpit/kubernetes
docker.io/openshift/origin-haproxy-router
docker.io/openshift/origin-haproxy-router　　
docker.io/openshift/origin-service-catalog
docker.io/openshift/origin-node
docker.io/openshift/origin-deployer
docker.io/openshift/origin-control-plane
docker.io/openshift/origin-control-plane
docker.io/openshift/origin-template-service-broker
docker.io/openshift/origin-pod
docker.io/cockpit/kubernetes
docker.io/openshift/origin-web-console
quay.io/coreos/etcd' >image.txt && \
while read line; do docker pull $line ; done<image.txt

#node镜像列表(两个node节点)
echo 'docker.io/openshift/origin-haproxy-router
docker.io/openshift/origin-node
docker.io/openshift/origin-deployer
docker.io/openshift/origin-pod
docker.io/ansibleplaybookbundle/origin-ansible-service-broker
docker.io/openshift/origin-docker-registry' >image.txt && \
while read line; do docker pull $line ; done<image.txt

2 配置ansible(主节点)

2.1 下载openshift-ansible代码

需要下载2.6.5版本的ansible

git clone -b release-3.11 https://github.com/openshift/openshift-ansible.git

wget https://buildlogs.centos.org/centos/7/paas/x86_64/openshift-origin311/ansible-2.6.5-1.el7.noarch.rpm &&\
yum localinstall ansible-2.6.5-1.el7.noarch.rpm -y &&\
yum install -y etcd &&\
systemctl enable etcd &&\
systemctl start etcd

2.2 配置文件

[root@master ~]# cat /etc/ansible/hosts
[all]
# all下放所有机器节点的名称
master
node01
node02

[OSEv3:children]
#这里放openshfit的角色，这里有三个角色，master，node，etcd
masters
nodes
etcd

[OSEv3:vars]
#这里是openshfit的安装参数

#指定ansible使用ssh的用户为root
ansible_ssh_user=root

#指定方式为origin
openshift_deployment_type=origin

#指定版本为3.11
openshift_release=3.11

openshift_enable_service_catalog=false
openshift_clock_enabled=true
openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]
openshift_disable_check=disk_availability,docker_storage,memory_availability,docker_image_availability

[masters]
#master角色的机器名称包含
master

[etcd]
#etcd角色的机器名称包含
master

[nodes]
node角色的机器名称包含
master openshift_node_group_name='node-config-all-in-one'
node01 openshift_node_group_name='node-config-compute'
node02 openshift_node_group_name='node-config-compute'

#openshift_enable_service_catalog=false
#openshift_hosted_registry_storage_kind=nfs
#openshift_hosted_registry_storage_access_modes=['ReadWriteMany']
#openshift_hosted_registry_storage_nfs_directory=/data/docker
#openshift_hosted_registry_storage_nfs_options='*(rw,root_squash)'
#openshift_hosted_registry_storage_volume_name=registry
#openshift_hosted_registry_storage_volume_size=20Gi

# openshiftclock_enabled=true
# ansible_service_broker_install=false

3 使用ansible来进行安装

#安装前检查

ansible-playbook ~/openshift-ansible/playbooks/prerequisites.yml

#安装

ansible-playbook ~/openshift-ansible/playbooks/deploy_cluster.yml

#如需重新安装，先卸载

ansible-playbook ~/openshift-ansible/playbooks/adhoc/uninstall.yml

4 安装后配置(主节点)

4.1 配置nfs持久卷

yum install nfs-utils rpcbind -y
mkdir -p /data/v0{01..20} /data/{docker,volume,registry}
chmod -R 777 /data
vim /etc/exports
/data 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v001 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v002 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v003 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v004 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v005 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v006 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v007 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v008 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v009 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/v010 192.168.1.0/24(rw,sync,no_all_squash,no_root_squash)
/data/docker *(rw,sync,no_all_squash,no_root_squash)

systemctl restart rpcbind &&\
systemctl restart nfs && \
systemctl enable rpcbind &&\
systemctl enable nfs
exportfs -r
kubectl apply -f pv-01-10.yaml
配置文件参考章节最后 pv-01-10.yaml

4.2 创建openshift用户

oc login -u system:admin                                ##使用系统管理员用户登录
htpasswd -b /etc/origin/master/htpasswd admin 123456    ##创建用户
htpasswd -b /etc/origin/master/htpasswd dev dev         ##创建用户
oc login -u admin                                       ##使用用户登录
oc logout                                               ##退出当前用户

4.3 赋予创建的用户集群管理员权限

oc login -u system:admin &&\
oc adm policy add-cluster-role-to-user cluster-admin xxxxx

4.4 访问测试

需要添加hosts解析到本地电脑

192.168.1.130 master
192.168.1.132 node01
192.168.1.135 node02

账号密码是上面创建用户的账号密码

http://master:8443 admin/123456

5 其他配置

5.1 部署集群节点管理cockpit

yum install -y cockpit cockpit-docker cockpit-kubernetes &&\
systemctl start cockpit &&\
systemctl enable cockpit.socket &&\
iptables -A INPUT -p tcp -m state --state NEW -m tcp --dport 9090 -j ACCEPT

https://192.168.1.130:9090 账号密码是机器的ssh账号密码

5.2 命令补全

#kubectl 命令补全
mkdir -p /usr/share/bash-completion/kubernetes
kubectl completion bash >/usr/share/bash-completion/kubernetes/bash_completion
echo 'source /usr/share/bash-completion/kubernetes/bash_completion' >>~/.bash_profile

#oc 自动补全
mkdir -p /usr/share/bash-completion/openshift
oc completion bash >/usr/share/bash-completion/openshift/bash_completion
echo "source /usr/share/bash-completion/openshift/bash_completion" >> ~/.bash_profile

source ~/.bash_profile

5.3 openshift登录

#admin用户登陆openshift：用户名dev 密码：dev
oc login -n openshift

oc get svc -n default|grep docker-registry|awk '{print $3}'
#查看admin用户的token
oc whoami -t
#登录docker私库
docker login -u admin -p `oc whoami -t` docker-registry.default.svc:5000
通过观察service的docker-registry的IP

将svc添加每台主机的hosts做对应的解析

5.4 常用命令行操作

#master-restart api
#master-restart controllers
oc whoami -t                                            ###查看当前用户token
oc login https://master:8443 --token=`oc whoami -t`     ###使用用户token登录
oc get nodes                                            ###查看当前node节点状态

6 其他

6.1 pv-01-10.yaml文件

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv001
  labels:
    name: pv001
    type: nfs
spec:
  nfs:
    path: /data/v001
    server: 192.168.1.130
  capacity:
    storage: 50Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv002
  labels:
    name: nfs-pv002
    type: nfs
spec:
  nfs:
    path: /data/v002
    server: 192.168.1.130
  capacity:
    storage: 50Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv003
  labels:
    name: nfs-pv003
    type: nfs
spec:
  nfs:
    path: /data/v003
    server: 192.168.1.130
  capacity:
    storage: 30Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv004
  labels:
    name: nfs-pv004
    type: nfs
spec:
  nfs:
    path: /data/v004
    server: 192.168.1.130
  capacity:
    storage: 30Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv005
  labels:
    name: nfs-pv005
    type: nfs
spec:
  nfs:
    path: /data/v005
    server: 192.168.1.130
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv006
  labels:
    name: nfs-pv006
    type: nfs
spec:
  nfs:
    path: /data/v006
    server: 192.168.1.130
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv007
  labels:
    name: nfs-pv007
    type: nfs
spec:
  nfs:
    path: /data/v007
    server: 192.168.1.130
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv008
  labels:
    name: nfs-pv008
    type: nfs
spec:
  nfs:
    path: /data/v008
    server: 192.168.1.130
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv009
  labels:
    name: nfs-pv009
    type: nfs
spec:
  nfs:
    path: /data/v009
    server: 192.168.1.130
  capacity:
    storage: 2Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv010
  labels:
    name: nfs-pv010
    type: nfs
spec:
  nfs:
    path: /data/v010
    server: 192.168.1.130
  capacity:
    storage: 2Gi
  accessModes:
    - ReadWriteMany
    - ReadWriteOnce
    - ReadOnlyMany
  persistentVolumeReclaimPolicy: Retain