kubernetes的的私有倉庫vmware harbor的配置
標籤(空格分隔): kubernetes系列
- 一. 系統環境的配置
- 二. vmware harbor 的安裝測試
- 三. 發佈一個測試nginx
一:系統初始化
1.1 系統主機名
192.168.100.11 node01.flyfish
192.168.100.12 node02.flyfish
192.168.100.13 node03.flyfish
192.168.100.14 node04.flyfish
192.168.100.15 node05.flyfish
192.168.100.16 node06.flyfish
1.2 關閉firewalld 清空iptables 與 selinux 規則
系統節點全部執行:
systemctl stop firewalld && systemctl disable firewalld && yum -y install iptables-services && systemctl start iptables && systemctl enable iptables && iptables -F && service iptables save
關閉 SELINUX
swapoff -a && sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab
setenforce 0 && sed -i 's/^SELINUX=.*/SELINUX=disabled/' /etc/selinux/config
1.3 安裝 依賴包
全部節點安裝
yum install -y conntrack ntpdate ntp ipvsadm ipset jq iptables curl sysstat libseccomp wget vim net-tools git
1.4 升級調整內核參數,對於 K8S
所有節點都執行
cat > kubernetes.conf <<EOF
net.bridge.bridge-nf-call-iptables=1
net.bridge.bridge-nf-call-ip6tables=1
net.ipv4.ip_forward=1
net.ipv4.tcp_tw_recycle=0
vm.swappiness=0 # 禁止使用 swap 空間,只有當系統 OOM 時才允許使用它 vm.overcommit_memory=1 # 不檢查物理內存是否夠用
vm.panic_on_oom=0 # 開啓 OOM
fs.inotify.max_user_instances=8192
fs.inotify.max_user_watches=1048576
fs.file-max=52706963
fs.nr_open=52706963
net.ipv6.conf.all.disable_ipv6=1
net.netfilter.nf_conntrack_max=2310720
EOF
cp kubernetes.conf /etc/sysctl.d/kubernetes.conf
sysctl -p /etc/sysctl.d/kubernetes.conf
1.5 調整系統時區
# 設置系統時區爲 中國/上海 timedatectl set-timezone Asia/Shanghai
# 將當前的 UTC 時間寫入硬件時鐘 timedatectl set-local-rtc 0
# 重啓依賴於系統時間的服務
systemctl restart rsyslog && systemctl restart crond
###1.6 關閉系統不需要服務
systemctl stop postfix && systemctl disable postfix
###1.7 設置 rsyslogd 和 systemd journald
mkdir /var/log/journal # 持久化保存日誌的目錄
mkdir /etc/systemd/journald.conf.d
cat > /etc/systemd/journald.conf.d/99-prophet.conf <<EOF
[Journal]
# 持久化保存到磁盤
Storage=persistent
# 壓縮歷史日誌
Compress=yes
SyncIntervalSec=5m
RateLimitInterval=30s
RateLimitBurst=1000
# 最大佔用空間 10G
SystemMaxUse=10G
# 單日誌文件最大 200M
SystemMaxFileSize=200M
# 日誌保存時間 2 周
MaxRetentionSec=2week
# 不將日誌轉發到 syslog
ForwardToSyslog=no
EOF
systemctl restart systemd-journald
1.7 升級系統內核爲 4.44
CentOS 7.x 系統自帶的 3.10.x 內核存在一些 Bugs,導致運行的 Docker、Kubernetes 不穩定,例如: rpm -Uvh
http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
# 安裝完成後檢查 /boot/grub2/grub.cfg 中對應內核 menuentry 中是否包含 initrd16 配置,如果沒有,再安裝 一次!
yum --enablerepo=elrepo-kernel install -y kernel-lt
# 設置開機從新內核啓動
grub2-set-default "CentOS Linux (4.4.182-1.el7.elrepo.x86_64) 7 (Core)"
reboot
# 重啓後安裝內核源文件
yum --enablerepo=elrepo-kernel install kernel-lt-devel-$(uname -r) kernel-lt-headers-$(uname -r)
1.8 kube-proxy開啓ipvs的前置條件
modprobe br_netfilter
cat > /etc/sysconfig/modules/ipvs.modules <<EOF
#!/bin/bash
modprobe -- ip_vs
modprobe -- ip_vs_rr
modprobe -- ip_vs_wrr
modprobe -- ip_vs_sh
modprobe -- nf_conntrack_ipv4
EOF
chmod 755 /etc/sysconfig/modules/ipvs.modules
bash /etc/sysconfig/modules/ipvs.modules
lsmod | grep -e ip_vs -e nf_conntrack_ipv4
二: 開始安裝vmware harbor 集羣
2.1 安裝docker
機器節點都執行:
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum update -y && yum install -y docker-ce-18.09.9-3.el7
重啓機器: reboot
查看內核版本: uname -r
在加載: grub2-set-default "CentOS Linux (4.4.182-1.el7.elrepo.x86_64) 7 (Core)" && reboot
如果還不行
就改 文件 : vim /etc/grub2.cfg 註釋掉 3.10 的 內核
保證 內核的版本 爲 4.4
service docker start
chkconfig docker on
## 創建 /etc/docker 目錄
mkdir /etc/docker
# 配置 daemon.
cat > /etc/docker/daemon.json <<EOF
{
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"insecure-registries":["https://node04.flyfish"]
}
EOF
mkdir -p /etc/systemd/system/docker.service.d
# 重啓docker服務
systemctl daemon-reload && systemctl restart docker && systemctl enable docker
上傳: docker-compose 與harbor-offline-installer-v1.2.0.tgz
mv docker-compose /usr/bin/
chmod +x /usr/bin/docker-compose
tar -zxvf harbor-offline-installer-v1.2.0.tgz
mv harbor /usr/local/
cd /usr/local/harbor/
vim harbor.cfg
---
hostname node04.flyfish
---
mkdir -p /data/cert/
創創建建 https 證證書書以以及及配配置置相相關關目目錄錄權權限限
cd /data/cert/
創建私鑰:
openssl rq -new -key server.key -out server.csr
openssl req -new -key server.key -out server.csr
cp server.key server.key.org
openssl rsa -in server.key.org -out server.key
openssl x509 -req -days 365 -in server.csr -signkey server.key -out server.crt
chmod 777 -R *
cd /usr/local/harbor/
./install.sh
登陸用戶名密碼:
admin
Harbor12345
查看harbor 是否能用docker 登陸
docker login https://node04.flyfish
用戶名: admin
密碼: Harbor12345
docker pull wangyanglinux/myapp:v1
docker pull wodby/nginx
docker tag wodby/nginx node04.flyfish/library/wodby/nginx:v1
docker push node04.flyfish/library/wodby/nginx:v1
docker tag wangyanglinux/myapp:v1 node04.flyfish/library/myapp:v1
docker push node04.flyfish/library/myapp:v1
刪掉原來的鏡像
docker rmi -f wangyanglinux/myapp:v1
docker rmi -f node04.flyfish/library/myapp:v1
docker rmi -f wodby/nginx
docker rmi -f node04.flyfish/library/wodby/nginx:v1
三: 發佈一個對外的nginx
測試從倉庫(vmware harbor)創建一個pod測試
kubectl run nginx-deployment --image=node04.flyfish/library/myapp:v1 --port 80 --replicas=1
kubectl get pods
kubectl get deploy,rs
副本擴容:
kubectl get deploy
kubectl scale --replicas=3 deploy/nginx-deployment
暴露端口訪問
kubectl expose deployment nginx-deployment --port=3000 --target-port=80
kubectl get svc
kubectl get pods -o wide
kubectl edit svc nginx-deployment
---
修改TYPE 類型 clusterIP 變爲:NodePort
---
kubectl get pod svc,pods -o wide
從外網訪問:
node02.flyfish:30789
node03.flyfish:30789