1. 在 Oracle 专用云设备上创建 Oracle 云原生环境
  2. 安装 Oracle Cloud Native Environment

安装 Oracle Cloud Native Environment

以下步骤介绍了如何在 Oracle Private Cloud Appliance 上安装 Oracle Cloud Native Environment 。

在操作员节点上安装 Oracle Cloud Native Environment API Server

API server 
if ! systemctl status olcne-api-server.service | grep 'Loaded: loaded'; then
 echo "No platform olcne-api-server.service seen on `hostname`, so the way is clear to install it..."
 pm_action=install
else
 sudo systemctl stop olcne-api-server.service
 pm_action=reinstall
fi
sudo dnf --best --setopt=keepcache=1 --allowerasing $pm_action -y olcne olcne-api-server olcne-utils
sudo systemctl enable olcne-api-server.service

在控制层和 Worker 节点上安装 Oracle Cloud Native Environment 平台代理

platform agents 
if ! systemctl status olcne-agent.service | grep 'Loaded: loaded'; then
 echo "No platform olcne-agent.service seen on `hostname`, so the way is clear to 
install it..."
 pm_action=install
else
 sudo systemctl stop olcne-agent.service
 pm_action=reinstall
fi
sudo dnf --best --setopt=keepcache=1 --allowerasing $pm_action -y olcne-agent olcne-utils
sudo systemctl enable olcne-agent.service 
sudo mkdir -p /etc/systemd/system/crio.service.d
cat <<EOD > /tmp/t
[Service]
Environment="HTTP_PROXY=http://proxy-host:proxy-port"
Environment="HTTPS_PROXY=http://proxy-host:proxy-port"
Environment="NO_PROXY=localhost,127.0.0.1,. proxy-host.us.oracle.com,.oraclecorp.com,.oraclevcn.com,10.0.1.0/24,10.0.0.0/24,.svc,/var/run/crio/crio.sock,10.96.0.0/12"
EOD
sudo mv /tmp/t /etc/systemd/system/crio.service.d/proxy.conf
if ! systemctl status docker.service 2>&1 | grep -l 'could not be found.' > /dev/null 2>&1; 
then
 sudo systemctl disable --now docker.service
fi
if ! systemctl status containerd.service 2>&1 | grep -l 'could not be found.' > /dev/null 
2>&1; then
 sudo systemctl disable --now containerd.service
fi

为控制层上的内部负载平衡器准备防火墙

control plane firewall for HA
sudo firewall-cmd --add-port=6444/tcp
sudo firewall-cmd --add-port=6444/tcp --permanent
sudo firewall-cmd --add-protocol=vrrp
sudo firewall-cmd --add-protocol=vrrp --permanent
scp /path/to/your/id_rsa ocneoperator.dm.com:/home/opc/.ssh/id_rsa

在操作员节点上生成 X509 证书

generate certificates 
if [ -f /home/opc/.olcne/certificates/127.0.0.1:8091/node.cert ]; then
 # should we call
 # olcne --api-server 127.0.0.1:8091 environment report --environment-name myenvironment
 # this file is searched for. Skip the call and just check for the file; if we see it, 
attempt to delete existing env:
 echo signs of myenvironment seen, will try to delete it...
 olcne --api-server 127.0.0.1:8091 environment delete --environment-name myenvironment
else
 echo "no environment seen, as expected. But will attempt to delete anyway to account for the case that the env is not reflected in that file check above"
 olcne --api-server 127.0.0.1:8091 environment delete --environment-name myenvironment
fi
cd /etc/olcne
if systemctl status olcne-api-server.service; then
 echo running olcne-api-server.service seen, stopping it...
 sudo systemctl stop olcne-api-server.service
else
 echo no running olcne-api-server.service seen, as expected
fi
sudo ./gen-certs-helper.sh --cert-request-organization-unit "Paper Sales" --cert-request-organization "Dunder Mifflin" --cert-request-locality "Scranton" --cert-request-state "WA" --cert-request-country "US" --cert-request-common-name "dm.com" --nodes olcneoperator.dm.com,olcnecontrol.dm.com,olcneworker.dm.com,olcneworker2.dm.com,ocneworker3.dm.com

在操作员节点上启动 Oracle Cloud Native Environment API Server

start API server 
sudo bash -x /etc/olcne/bootstrap-olcne.sh --secret-manager-type file --olcne-node-cert-path 
/etc/olcne/configs/certificates/production/node.cert --olcne-ca-path 
/etc/olcne/configs/certificates/production/ca.cert --olcne-node-key-path 
/etc/olcne/configs/certificates/production/node.key --olcne-component api-server
systemctl status olcne-api-server.service

在控制层和 Worker 节点上启动平台代理

start platform agents 
sudo /etc/olcne/bootstrap-olcne.sh \
--secret-manager-type file \
--olcne-component agent \
--olcne-node-cert-path /etc/olcne/configs/certificates/production/node.cert \
--olcne-ca-path /etc/olcne/configs/certificates/production/ca.cert \
--olcne-node-key-path /etc/olcne/configs/certificates/production/node.key
systemctl status olcne-agent.service

验证正在运行的平台代理

验证在控制层（即控制节点）和 worker 节点上运行的平台代理。 

verify platform agents up 
ps auxww | grep /usr/libexec/olcne-agent | grep -v grep > /tmp/kk.26597
if [ -s /tmp/kk.26597 ]; then
 echo "OK /usr/libexec/olcne-agent running on `hostname`"
 if [ -n "" ]; then
 cat /tmp/kk.26597
 fi
else
 echo "FAIL /usr/libexec/olcne-agent NOT running on `hostname`"
fi

在操作员节点上创建 Oracle Cloud Native Environment

如果这不是新分配的集群，并且之前已在操作员节点上创建了 Oracle Cloud Native Environment ，请立即删除该集群。 

#optionally remove previous environment 
olcne --api-server 127.0.0.1:8091 environment delete --environment-name myenvironment
create environment 
sudo chown -R opc:opc /etc/olcne /configs
olcne --api-server 127.0.0.1:8091 environment create --environment-name myenvironment --update-config --secret-manager-type file --olcne-node-cert-path 
/etc/olcne/configs/certificates/production/node.cert --olcne-ca-path 
/etc/olcne/configs/certificates/production/ca.cert --olcne-node-key-path 
/etc/olcne/configs/certificates/production/node.key

创建 Kubernetes 模块

如果这不是新分配的集群，并且之前已在操作员节点上创建了 Oracle Cloud Native Environment Kubernetes 模块，则删除该模块。

例如：

#optionally remove previous k8s module 
olcne module uninstall --environment-name myenvironment --module kubernetes --name mycluster

在操作员节点上创建 Kubernetes 模块。对于此命令，我们需要确定要使用的网络接口。在此示例代码中，我们运行 ifconfig 并选择第一个非循环网络接口。因此，例如，如果 ifconfig 生成以下输出： 

ifconfig output 
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
 inet 172.16.8.117 netmask 255.255.252.0 broadcast 172.16.11.255
 inet6 fe80::213:97ff:fe3c:8b34 prefixlen 64 scopeid 0x20link
 ether 00:13:97:3c:8b:34 txqueuelen 1000 (Ethernet)
 RX packets 2284 bytes 392817 (383.6 KiB)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 1335 bytes 179539 (175.3 KiB)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
 inet 127.0.0.1 netmask 255.0.0.0
 inet6 ::1 prefixlen 128 scopeid 0x10host
 loop txqueuelen 1000 (Local Loopback)
 RX packets 6 bytes 416 (416.0 B)
 RX errors 0 dropped 0 overruns 0 frame 0
 TX packets 6 bytes 416 (416.0 B)
 TX errors 0 dropped 0 overruns 0 carrier 0 collisions

然后，下面第二行的 sed 表达式将最终将 iface 设置为 ens3。

例如：

create k8 module 
sudo chown -R opc:opc /etc/olcne/configs/certificates/restrict_external_ip/production
iface=`ifconfig | sed -n -e '/^ /d' -e /LOOPBACK/d -e 's/:.*//p'```
# substitute the IP of your control node for CONTROL_NODE_IP below:
olcne module create --environment-name myenvironment --module kubernetes --name mycluster --container-registry container-registry.oracle.com/olcne --virtual-ip CONTROL_NODE_IP --master-nodes ocnecontrol.dm.com:8090 --worker-nodes ocneworker.dm.com:8090,ocneworker2.dm.com:8090,ocneworker3.dm.com:8090 --selinux enforcing --restrict-service-externalip-ca-cert 
/etc/olcne/configs/certificates/restrict_external_ip/production/production/ca.cert --restrict-service-externalip-tls-cert 
/etc/olcne/configs/certificates/restrict_external_ip/production/production/node.cert --restrict-service-externalip-tls-key 
/etc/olcne/configs/certificates/restrict_external_ip/production/production/node.key --pod-network-iface $iface

将入站规则添加到子网

  1. 在 Private Cloud Appliance 界面中，导航到 Dashboard/Virtual Cloud Networks/your_VCN/your_security_list。
  2. 为类型为 TCP 的源 0.0.0.0/0 添加规则，允许目标端口范围为 2379-10255。

验证操作员节点上的 Kubernetes 模块

validate k8 
olcne module validate --environment-name myenvironment --name mycluster

在操作员节点上安装 Kubernetes 模块

install k8 
olcne module install --environment-name myenvironment --name mycluster

查看操作员节点上的 Kubernetes 模块报告

report on k8  OCNEctl module report --environment-name myenvironment --name mycluster

在操作员节点上显示 Kubernetes 节点

Note: To use kubectl within your cluster,:
run kubectl 
kubectl get nodes -o wide