标签:select monit 备份文件 cli ecs pods port xxx git
上篇文章准备了离线安装 OCP 所需要的离线资源,包括安装镜像、所有样例 Image Stream
和 OperatorHub
中的所有 RedHat Operators。本文就开始正式安装 OCP
(Openshift Container Platform) 集群,包括 DNS 解析、负载均衡配置、ignition
配置文件生成和集群部署。
OCP
安装期间需要用到多个文件:安装配置文件、Kubernetes 部署清单、Ignition 配置文件(包含了 machine types)。安装配置文件将被转换为 Kubernetes 部署清单,然后将清单包装到 Ignition
配置文件中。 安装程序使用这些 Ignition
配置文件来创建 Openshift 集群。运行安装程序时,所有原始安装配置文件都会修改,因此在安装之前应该先备份文件。
在安装 OCP 时,我们需要有一台引导主机(Bootstrap
)。这个主机可以访问所有的 OCP 节点。引导主机启动一个临时控制平面,它启动 OCP 集群的其余部分然后被销毁。引导主机使用 Ignition 配置文件进行集群安装引导,该文件描述了如何创建 OCP 集群。安装程序生成的 Ignition 配置文件包含 24 小时后过期的证书,所以必须在证书过期之前完成集群安装。
引导集群安装包括如下步骤:
Master
节点启动所需的资源。Master
节点从引导主机远程获取资源并完成引导。Master
节点通过引导主机构建 Etcd
集群。Etcd
集群启动临时 Kubernetes
控制平面。引导安装过程完成以后,OCP 集群部署完毕。然后集群开始下载并配置日常操作所需的其余组件,包括创建计算节点、通过 Operator
安装其他服务等。
服务器规划如下:
Etcd
、控制平面组件和 Infras
基础组件。Quay
。主机类型 | 操作系统 | Hostname | vCPU | 内存 | 存储 | IP | FQDN |
---|---|---|---|---|---|---|---|
镜像节点 | RHEL 7.6 | registry | 4 | 8GB | 150GB | 192.168.57.70 | registry.openshift4.example.com |
基础节点 | RHEL 7.6 | bastion | 4 | 16GB | 120GB | 192.168.57.60 | bastion.openshift4.example.com |
引导主机 | RHCOS | bootstrap | 4 | 16GB | 120GB | 192.168.57.61 | bootstrap.openshift4.example.com |
控制平面 | RHCOS | master1 | 4 | 16GB | 120GB | 192.168.57.62 | master1.openshift4.example.com |
控制平面 | RHCOS | master2 | 4 | 16GB | 120GB | 192.168.57.63 | master2.openshift4.example.com |
控制平面 | RHCOS | master3 | 4 | 16GB | 120GB | 192.168.57.64 | master3.openshift4.example.com |
计算节点 | RHCOS 或 RHEL 7.6 | worker1 | 2 | 8GB | 120GB | 192.168.57.65 | worker1.openshift4.example.com |
计算节点 | RHCOS 或 RHEL 7.6 | worker2 | 2 | 8GB | 120GB | 192.168.57.66 | worke2.openshift4.example.com |
接下来看一下每个节点的端口号分配。
所有节点(计算节点和控制平面)之间需要开放的端口:
协议 | 端口 | 作用 |
---|---|---|
ICMP | N/A | 测试网络连通性 |
TCP | 9000-9999 |
节点的服务端口,包括 node exporter 使用的 9100-9101 端口和 Cluster Version Operator 使用的 9099 端口 |
10250 -10259 |
Kubernetes 预留的默认端口 | |
10256 |
openshift-sdn | |
UDP | 4789 |
VXLAN 协议或 GENEVE 协议的通信端口 |
6081 |
VXLAN 协议或 GENEVE 协议的通信端口 | |
9000 -9999 |
节点的服务端口,包括 node exporter 使用的 9100-9101 端口 |
|
30000 -32767 |
Kubernetes NodePort |
控制平面需要向其他节点开放的端口:
协议 | 端口 | 作用 |
---|---|---|
TCP | 2379 -2380 |
Etcd 服务端口 |
6443 |
Kubernetes API |
除此之外,还要配置两个四层负载均衡器,一个用来暴露集群 API,一个用来暴露 Ingress:
端口 | 作用 | 内部 | 外部 | 描述 |
---|---|---|---|---|
6443 |
引导主机和控制平面使用。在引导主机初始化集群控制平面后,需从负载均衡器中手动删除引导主机 | x | x | Kubernetes API server |
22623 |
引导主机和控制平面使用。在引导主机初始化集群控制平面后,需从负载均衡器中手动删除引导主机 | x | Machine Config server | |
443 |
Ingress Controller 或 Router 使用 | x | x | HTTPS 流量 |
80 |
Ingress Controller 或 Router 使用 | x | x | HTTP 流量 |
按照官方文档,使用 UPI 基础架构的 OCP 集群需要以下的 DNS 记录。在每条记录中,<cluster_name>
是集群名称,<base_domain>
是在 install-config.yaml
文件中指定的集群基本域,如下表所示:
组件 | DNS记录 | 描述 |
---|---|---|
Kubernetes API | api.<cluster_name>.<base_domain>. |
此 DNS 记录必须指向控制平面节点的负载均衡器。此记录必须可由集群外部的客户端和集群中的所有节点解析。 |
api-int.<cluster_name>.<base_domain>. |
此 DNS 记录必须指向控制平面节点的负载均衡器。此记录必须可由集群外部的客户端和集群中的所有节点解析。 | |
Routes | *.apps.<cluster_name>.<base_domain>. |
DNS 通配符记录,指向负载均衡器。这个负载均衡器的后端是 Ingress router 所在的节点,默认是计算节点。此记录必须可由集群外部的客户端和集群中的所有节点解析。 |
etcd | etcd-<index>.<cluster_name>.<base_domain>. |
OCP 要求每个 etcd 实例的 DNS 记录指向运行实例的控制平面节点。etcd 实例由 0 开头,以 n-1 结束,其中 n 是集群中控制平面节点的数量。集群中的所有节点必须都可以解析此记录。 |
_etcd-server-ssl._tcp.<cluster_name>.<base_domain>. |
因为 etcd 使用端口 2380 对外服务,因此需要建立对应每台 etcd 节点的 SRV DNS 记录,优先级 0,权重 10 和端口 2380 |
DNS 服务的部署方法由很多种,我当然推荐使用 CoreDNS
,毕竟云原生标配。由于这里需要添加 SRV 记录,所以需要 CoreDNS 结合 etcd
插件使用。以下所有操作在基础节点上执行。
首先通过 yum 安装并启动 etcd:
$ yum install -y etcd
$ systemctl enable etcd --now
然后下载 CoreDNS 二进制文件:
$ wget https://github.com/coredns/coredns/releases/download/v1.6.9/coredns_1.6.9_linux_amd64.tgz
$ tar zxvf coredns_1.6.9_linux_amd64.tgz
$ mv coredns /usr/local/bin
创建 Systemd Unit
文件:
$ cat > /etc/systemd/system/coredns.service <<EOF
[Unit]
Description=CoreDNS DNS server
Documentation=https://coredns.io
After=network.target
[Service]
PermissionsStartOnly=true
LimitNOFILE=1048576
LimitNPROC=512
CapabilityBoundingSet=CAP_NET_BIND_SERVICE
AmbientCapabilities=CAP_NET_BIND_SERVICE
NoNewPrivileges=true
User=coredns
WorkingDirectory=~
ExecStart=/usr/local/bin/coredns -conf=/etc/coredns/Corefile
ExecReload=/bin/kill -SIGUSR1 $MAINPID
Restart=on-failure
[Install]
WantedBy=multi-user.target
EOF
新建 coredns
用户:
$ useradd coredns -s /sbin/nologin
新建 CoreDNS 配置文件:
$ cat > /etc/coredns/Corefile <<EOF
.:53 { # 监听 TCP 和 UDP 的 53 端口
template IN A apps.openshift4.example.com {
match .*apps\.openshift4\.example\.com # 匹配请求 DNS 名称的正则表达式
answer "{{ .Name }} 60 IN A 192.168.57.60" # DNS 应答
fallthrough
}
etcd { # 配置启用 etcd 插件,后面可以指定域名,例如 etcd test.com {
path /skydns # etcd 里面的路径 默认为 /skydns,以后所有的 dns 记录都存储在该路径下
endpoint http://localhost:2379 # etcd 访问地址,多个空格分开
fallthrough # 如果区域匹配但不能生成记录,则将请求传递给下一个插件
# tls CERT KEY CACERT # 可选参数,etcd 认证证书设置
}
prometheus # 监控插件
cache 160
loadbalance # 负载均衡,开启 DNS 记录轮询策略
forward . 192.168.57.1
log # 打印日志
}
EOF
其中 template
插件用来实现泛域名解析。
启动 CoreDNS 并设置开机自启:
$ systemctl enable coredns --now
验证泛域名解析:
$ dig +short apps.openshift4.example.com @127.0.0.1
192.168.57.60
$ dig +short x.apps.openshift4.example.com @127.0.0.1
192.168.57.60
添加其余 DNS 记录:
$ alias etcdctlv3=‘ETCDCTL_API=3 etcdctl‘
$ etcdctlv3 put /skydns/com/example/openshift4/api ‘{"host":"192.168.57.60","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/api-int ‘{"host":"192.168.57.60","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/etcd-0 ‘{"host":"192.168.57.62","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/etcd-1 ‘{"host":"192.168.57.63","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/etcd-2 ‘{"host":"192.168.57.64","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/_tcp/_etcd-server-ssl/x1 ‘{"host":"etcd-0.openshift4.example.com","ttl":60,"priority":0,"weight":10,"port":2380}‘
$ etcdctlv3 put /skydns/com/example/openshift4/_tcp/_etcd-server-ssl/x2 ‘{"host":"etcd-1.openshift4.example.com","ttl":60,"priority":0,"weight":10,"port":2380}‘
$ etcdctlv3 put /skydns/com/example/openshift4/_tcp/_etcd-server-ssl/x3 ‘{"host":"etcd-2.openshift4.example.com","ttl":60,"priority":0,"weight":10,"port":2380}‘
# 除此之外再添加各节点主机名记录
$ etcdctlv3 put /skydns/com/example/openshift4/bootstrap ‘{"host":"192.168.57.61","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/master1 ‘{"host":"192.168.57.62","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/master2 ‘{"host":"192.168.57.63","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/master3 ‘{"host":"192.168.57.64","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/worker1 ‘{"host":"192.168.57.65","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/worker2 ‘{"host":"192.168.57.66","ttl":60}‘
$ etcdctlv3 put /skydns/com/example/openshift4/registry ‘{"host":"192.168.57.70","ttl":60}‘
验证 DNS 解析:
$ yum install -y bind-utils
$ dig +short api.openshift4.example.com @127.0.0.1
192.168.57.60
$ dig +short api-int.openshift4.example.com @127.0.0.1
192.168.57.60
$ dig +short etcd-0.openshift4.example.com @127.0.0.1
192.168.57.62
$ dig +short etcd-1.openshift4.example.com @127.0.0.1
192.168.57.63
$ dig +short etcd-2.openshift4.example.com @127.0.0.1
192.168.57.64
$ dig +short -t SRV _etcd-server-ssl._tcp.openshift4.example.com @127.0.0.1
10 33 2380 etcd-0.openshift4.example.com.
10 33 2380 etcd-1.openshift4.example.com.
10 33 2380 etcd-2.openshift4.example.com.
$ dig +short bootstrap.openshift4.example.com @127.0.0.1
192.168.57.61
$ dig +short master1.openshift4.example.com @127.0.0.1
192.168.57.62
$ dig +short master2.openshift4.example.com @127.0.0.1
192.168.57.63
$ dig +short master3.openshift4.example.com @127.0.0.1
192.168.57.64
$ dig +short worker1.openshift4.example.com @127.0.0.1
192.168.57.65
$ dig +short worker2.openshift4.example.com @127.0.0.1
192.168.57.66
负载均衡我选择使用 Envoy
,先准备配置文件:
# /etc/envoy/envoy.yaml
node:
id: node0
cluster: cluster0
dynamic_resources:
lds_config:
path: /etc/envoy/lds.yaml
cds_config:
path: /etc/envoy/cds.yaml
admin:
access_log_path: "/dev/stdout"
address:
socket_address:
address: "0.0.0.0"
port_value: 15001
# /etc/envoy/lds.yaml
version_info: "0"
resources:
- "@type": type.googleapis.com/envoy.config.listener.v3.Listener
name: listener_openshift-api-server
address:
socket_address:
address: 0.0.0.0
port_value: 6443
filter_chains:
- filters:
- name: envoy.tcp_proxy
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.tcp_proxy.v3.TcpProxy
stat_prefix: openshift-api-server
cluster: openshift-api-server
access_log:
name: envoy.access_loggers.file
typed_config:
"@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
path: /dev/stdout
- "@type": type.googleapis.com/envoy.config.listener.v3.Listener
name: listener_machine-config-server
address:
socket_address:
address: "::"
ipv4_compat: true
port_value: 22623
filter_chains:
- filters:
- name: envoy.tcp_proxy
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.tcp_proxy.v3.TcpProxy
stat_prefix: machine-config-server
cluster: machine-config-server
access_log:
name: envoy.access_loggers.file
typed_config:
"@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
path: /dev/stdout
- "@type": type.googleapis.com/envoy.config.listener.v3.Listener
name: listener_ingress-http
address:
socket_address:
address: "::"
ipv4_compat: true
port_value: 80
filter_chains:
- filters:
- name: envoy.tcp_proxy
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.tcp_proxy.v3.TcpProxy
stat_prefix: ingress-http
cluster: ingress-http
access_log:
name: envoy.access_loggers.file
typed_config:
"@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
path: /dev/stdout
- "@type": type.googleapis.com/envoy.config.listener.v3.Listener
name: listener_ingress-https
address:
socket_address:
address: "::"
ipv4_compat: true
port_value: 443
filter_chains:
- filters:
- name: envoy.tcp_proxy
typed_config:
"@type": type.googleapis.com/envoy.extensions.filters.network.tcp_proxy.v3.TcpProxy
stat_prefix: ingress-https
cluster: ingress-https
access_log:
name: envoy.access_loggers.file
typed_config:
"@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
path: /dev/stdout
# /etc/envoy/cds.yaml
version_info: "0"
resources:
- "@type": type.googleapis.com/envoy.config.cluster.v3.Cluster
name: openshift-api-server
connect_timeout: 1s
type: strict_dns
dns_lookup_family: V4_ONLY
lb_policy: ROUND_ROBIN
load_assignment:
cluster_name: openshift-api-server
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: 192.168.57.61
port_value: 6443
- endpoint:
address:
socket_address:
address: 192.168.57.62
port_value: 6443
- endpoint:
address:
socket_address:
address: 192.168.57.63
port_value: 6443
- endpoint:
address:
socket_address:
address: 192.168.57.64
port_value: 6443
- "@type": type.googleapis.com/envoy.config.cluster.v3.Cluster
name: machine-config-server
connect_timeout: 1s
type: strict_dns
dns_lookup_family: V4_ONLY
lb_policy: ROUND_ROBIN
load_assignment:
cluster_name: machine-config-server
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: 192.168.57.61
port_value: 22623
- endpoint:
address:
socket_address:
address: 192.168.57.62
port_value: 22623
- endpoint:
address:
socket_address:
address: 192.168.57.63
port_value: 22623
- endpoint:
address:
socket_address:
address: 192.168.57.64
port_value: 22623
- "@type": type.googleapis.com/envoy.config.cluster.v3.Cluster
name: ingress-http
connect_timeout: 1s
type: strict_dns
dns_lookup_family: V4_ONLY
lb_policy: ROUND_ROBIN
load_assignment:
cluster_name: ingress-http
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: 192.168.57.65
port_value: 80
- endpoint:
address:
socket_address:
address: 192.168.57.66
port_value: 80
- "@type": type.googleapis.com/envoy.config.cluster.v3.Cluster
name: ingress-https
connect_timeout: 1s
type: strict_dns
dns_lookup_family: V4_ONLY
lb_policy: ROUND_ROBIN
load_assignment:
cluster_name: ingress-https
endpoints:
- lb_endpoints:
- endpoint:
address:
socket_address:
address: 192.168.57.65
port_value: 443
- endpoint:
address:
socket_address:
address: 192.168.57.66
port_value: 443
配置看不懂的去看我的电子书:Envoy 中文指南
启动 Envoy
:
$ podman run -d --restart=always --name envoy --net host -v /etc/envoy:/etc/envoy envoyproxy/envoy
在安装过程中,我们会在基础节点上执行 OCP 安装调试和灾难恢复,因此必须在基础节点上配置 SSH key,ssh-agent
将会用它来执行安装程序。
基础节点上的 core
用户可以使用该私钥登录到 Master 节点。部署集群时,该私钥会被添加到 core 用户的 ~/.ssh/authorized_keys
列表中。
密钥创建步骤如下:
① 创建无密码验证的 SSH key:
$ ssh-keygen -t rsa -b 4096 -N ‘‘ -f ~/.ssh/new_rsa
② 启动 ssh-agent
进程作为后台任务:
$ eval "$(ssh-agent -s)"
③ 将 SSH 私钥添加到 ssh-agent
:
$ ssh-add ~/.ssh/new_rsa
后续集群安装过程中,有一步会提示输入 SSH public key,届时使用前面创建的公钥 new_rsa.pub
就可以了。
如果是在线安装,还需要在基础节点上下载安装程序。但这里是离线安装,安装程序在上篇文章中已经被提取出来了,所以不需要再下载。
首先创建一个安装目录,用来存储安装所需要的文件:
$ mkdir /ocpinstall
自定义 install-config.yaml
并将其保存在 /ocpinstall
目录中。配置文件必须命名为 install-config.yaml
。配置文件内容:
apiVersion: v1
baseDomain: example.com
compute:
- hyperthreading: Enabled
name: worker
replicas: 0
controlPlane:
hyperthreading: Enabled
name: master
replicas: 3
metadata:
name: openshift4
networking:
clusterNetwork:
- cidr: 10.128.0.0/14
hostPrefix: 23
networkType: OpenShiftSDN
serviceNetwork:
- 172.30.0.0/16
platform:
none: {}
fips: false
pullSecret: ‘{"auths": ...}‘
sshKey: ‘ssh-rsa ...‘
additionalTrustBundle: |
-----BEGIN CERTIFICATE-----
省略,注意这里要前面空两格
-----END CERTIFICATE-----
imageContentSources:
- mirrors:
- registry.openshift4.example.com/ocp4/openshift4
source: quay.io/openshift-release-dev/ocp-release
- mirrors:
- registry.openshift4.example.com/ocp4/openshift4
source: quay.io/openshift-release-dev/ocp-v4.0-art-dev
-
开头。<cluster_name>
。hostPrefix
设置为 23
,则为每一个节点分配一个给定 cidr 的 /23
子网,允许 \(510 (2^{32 - 23} - 2)\) 个 Pod IP 地址。cat /root/pull-secret.json|jq -c
来压缩成一行。cat ~/.ssh/new_rsa.pub
查看。cat /data/quay/config/ssl.cert
查看。oc adm release mirror
的输出结果。备份安装配置文件,便于以后重复使用:
$ cd /ocpinstall
$ cp install-config.yaml install-config.yaml.20200604
创建 Kubernetes 部署清单后
install-config.yaml
将被删除,请务必先备份此文件!
创建 Kubernetes 部署清单文件:
$ openshift-install create manifests --dir=/ocpinstall
修改 manifests/cluster-scheduler-02-config.yml
文件,将 mastersSchedulable
的值设为 flase
,以防止 Pod 调度到控制节点。
创建 Ignition 配置文件后
install-config.yaml
将被删除,请务必先备份此文件!
$ cp install-config.yaml.20200604 install-config.yaml
$ openshift-install create ignition-configs --dir=/ocpinstall
生成的文件:
├── auth
│?? ├── kubeadmin-password
│?? └── kubeconfig
├── bootstrap.ign
├── master.ign
├── metadata.json
└── worker.ign
准备一个 HTTP 服务,这里选择使用 Nginx:
$ yum install -y nginx
修改 Nginx 的配置文件 /etc/nginx/nginx/.conf
,将端口改为 8080
(因为负载均衡器已经占用了 80 端口)。然后启动 Nginx 服务:
$ systemctl enable nginx --now
将 Ignition
配置文件拷贝到 HTTP 服务的 ignition 目录:
$ mkdir /usr/share/nginx/html/ignition
$ cp -r *.ign /usr/share/nginx/html/ignition/
下载用于裸机安装的 BIOS 文件,并上传到 Nginx 的目录:
$ mkdir /usr/share/nginx/html/install
$ wget https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.4/latest/rhcos-4.4.3-x86_64-metal.x86_64.raw.gz -O /usr/share/nginx/html/install/rhcos-4.4.3-x86_64-metal.x86_64.raw.gz
本地下载 RHCOS 的 ISO
文件:https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.4/latest/rhcos-4.4.3-x86_64-installer.x86_64.iso,然后上传到 vSphere
。步骤如下:
① 首先登陆 vSphere,然后点击『存储』。
② 选择一个『数据存储』,然后在右边的窗口中选择『上载文件』。
③ 选择刚刚下载的 ISO 文件,上传到 ESXI 主机。
最后开始正式安装集群,先创建 bootstrap 节点虚拟机,操作系统选择『Red Hat Enterprise Linux 7 (64-Bit)』,并挂载之前上传的 ISO,按照之前的表格设置 CPU 、内存和硬盘,打开电源,然后按照下面的步骤操作:
① 在 RHCOS Installer 安装界面按 Tab
键进入引导参数配置选项。
② 在默认选项 coreos.inst = yes
之后添加(由于无法拷贝粘贴,请输入仔细核对后再回车进行):
ip=192.168.57.61::192.168.57.1:255.255.255.0:bootstrap.openshift4.example.com:ens192:none nameserver=192.168.57.60 coreos.inst.install_dev=sda coreos.inst.image_url=http://192.168.57.60:8080/install/rhcos-4.4.3-x86_64-metal.x86_64.raw.gz coreos.inst.ignition_url=http://192.168.57.60:8080/ignition/bootstrap.ign
其中 ip=...
的含义为 ip=$IPADDRESS::$DEFAULTGW:$NETMASK:$HOSTNAMEFQDN:$IFACE:none
。
如图所示:
③ 如果安装有问题会进入 emergency shell
,检查网络、域名解析是否正常,如果正常一般是以上参数输入有误,reboot 退出 shell 回到第一步重新开始。
安装成功后从基础节点通过命令 ssh -i ~/.ssh/new_rsa core@192.168.57.61
登录 bootstrap 节点,然后验证:
hostname
ip route
cat /etc/resolv.conf
podman ps
查看服务是否以容器方式运行ss -tulnp
查看 6443 和 22623 端口是否启用。这里简单介绍一下 bootstrap 节点的启动流程,它会先通过 podman
跑一些容器,然后在容器里面启动临时控制平面,这个临时控制平面是通过 CRIO
跑在容器里的,有点绕。。直接看命令:
$ podman ps -a --no-trunc --sort created --format "{{.Command}}"
start --tear-down-early=false --asset-dir=/assets --required-pods=openshift-kube-apiserver/kube-apiserver,openshift-kube-scheduler/openshift-kube-scheduler,openshift-kube-controller-manager/kube-controller-manager,openshift-cluster-version/cluster-version-operator
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
render --dest-dir=/assets/cco-bootstrap --cloud-credential-operator-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:244ab9d0fcf7315eb5c399bd3fa7c2e662cf23f87f625757b13f415d484621c3
bootstrap --etcd-ca=/assets/tls/etcd-ca-bundle.crt --etcd-metric-ca=/assets/tls/etcd-metric-ca-bundle.crt --root-ca=/assets/tls/root-ca.crt --kube-ca=/assets/tls/kube-apiserver-complete-client-ca-bundle.crt --config-file=/assets/manifests/cluster-config.yaml --dest-dir=/assets/mco-bootstrap --pull-secret=/assets/manifests/openshift-config-secret-pull-secret.yaml --etcd-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:aba3c59eb6d088d61b268f83b034230b3396ce67da4f6f6d49201e55efebc6b2 --kube-client-agent-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:8eb481214103d8e0b5fe982ffd682f838b969c8ff7d4f3ed4f83d4a444fb841b --machine-config-operator-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:31dfdca3584982ed5a82d3017322b7d65a491ab25080c427f3f07d9ce93c52e2 --machine-config-oscontent-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:b397960b7cc14c2e2603111b7385c6e8e4b0f683f9873cd9252a789175e5c4e1 --infra-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:d7862a735f492a18cb127742b5c2252281aa8f3bd92189176dd46ae9620ee68a --keepalived-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:a882a11b55b2fc41b538b59bf5db8e4cfc47c537890e4906fe6bf22f9da75575 --coredns-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:b25b8b2219e8c247c088af93e833c9ac390bc63459955e131d89b77c485d144d --mdns-publisher-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:dea1fcb456eae4aabdf5d2d5c537a968a2dafc3da52fe20e8d99a176fccaabce --haproxy-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:7064737dd9d0a43de7a87a094487ab4d7b9e666675c53cf4806d1c9279bd6c2e --baremetal-runtimecfg-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:715bc48eda04afc06827189883451958d8940ed8ab6dd491f602611fe98a6fba --cloud-config-file=/assets/manifests/cloud-provider-config.yaml --cluster-etcd-operator-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:9f7a02df3a5d91326d95e444e2e249f8205632ae986d6dccc7f007ec65c8af77
render --prefix=cluster-ingress- --output-dir=/assets/ingress-operator-manifests
/usr/bin/cluster-kube-scheduler-operator render --manifest-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:187b9d29fea1bde9f1785584b4a7bbf9a0b9f93e1323d92d138e61c861b6286c --asset-input-dir=/assets/tls --asset-output-dir=/assets/kube-scheduler-bootstrap --config-output-file=/assets/kube-scheduler-bootstrap/config
/usr/bin/cluster-kube-controller-manager-operator render --manifest-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:187b9d29fea1bde9f1785584b4a7bbf9a0b9f93e1323d92d138e61c861b6286c --asset-input-dir=/assets/tls --asset-output-dir=/assets/kube-controller-manager-bootstrap --config-output-file=/assets/kube-controller-manager-bootstrap/config --cluster-config-file=/assets/manifests/cluster-network-02-config.yml
/usr/bin/cluster-kube-apiserver-operator render --manifest-etcd-serving-ca=etcd-ca-bundle.crt --manifest-etcd-server-urls=https://localhost:2379 --manifest-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:187b9d29fea1bde9f1785584b4a7bbf9a0b9f93e1323d92d138e61c861b6286c --manifest-operator-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:718ca346d5499cccb4de98c1f858c9a9a13bbf429624226f466c3ee2c14ebf40 --asset-input-dir=/assets/tls --asset-output-dir=/assets/kube-apiserver-bootstrap --config-output-file=/assets/kube-apiserver-bootstrap/config --cluster-config-file=/assets/manifests/cluster-network-02-config.yml
/usr/bin/cluster-config-operator render --config-output-file=/assets/config-bootstrap/config --asset-input-dir=/assets/tls --asset-output-dir=/assets/config-bootstrap
/usr/bin/cluster-etcd-operator render --etcd-ca=/assets/tls/etcd-ca-bundle.crt --etcd-metric-ca=/assets/tls/etcd-metric-ca-bundle.crt --manifest-etcd-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:aba3c59eb6d088d61b268f83b034230b3396ce67da4f6f6d49201e55efebc6b2 --etcd-discovery-domain=test.example.com --manifest-cluster-etcd-operator-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:9f7a02df3a5d91326d95e444e2e249f8205632ae986d6dccc7f007ec65c8af77 --manifest-setup-etcd-env-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:31dfdca3584982ed5a82d3017322b7d65a491ab25080c427f3f07d9ce93c52e2 --manifest-kube-client-agent-image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:8eb481214103d8e0b5fe982ffd682f838b969c8ff7d4f3ed4f83d4a444fb841b --asset-input-dir=/assets/tls --asset-output-dir=/assets/etcd-bootstrap --config-output-file=/assets/etcd-bootstrap/config --cluster-config-file=/assets/manifests/cluster-network-02-config.yml
render --output-dir=/assets/cvo-bootstrap --release-image=registry.openshift4.example.com/ocp4/openshift4@sha256:4a461dc23a9d323c8bd7a8631bed078a9e5eec690ce073f78b645c83fb4cdf74
/usr/bin/grep -oP Managed /manifests/0000_12_etcd-operator_01_operator.cr.yaml
$ crictl pods
POD ID CREATED STATE NAME NAMESPACE ATTEMPT
17a978b9e7b1e 3 minutes ago Ready bootstrap-kube-apiserver-bootstrap.openshift4.example.com kube-system 24
8a0f79f38787a 3 minutes ago Ready bootstrap-kube-scheduler-bootstrap.openshift4.example.com kube-system 4
1a707da797173 3 minutes ago Ready bootstrap-kube-controller-manager-bootstrap.openshift4.example.com kube-system 4
0461d2caa2753 3 minutes ago Ready cloud-credential-operator-bootstrap.openshift4.example.com openshift-cloud-credential-operator 4
ab6519286f65a 3 minutes ago Ready bootstrap-cluster-version-operator-bootstrap.openshift4.example.com openshift-cluster-version 2
457a7a46ec486 8 hours ago Ready bootstrap-machine-config-operator-bootstrap.openshift4.example.com default 0
e4df49b4d36a1 8 hours ago Ready etcd-bootstrap-member-bootstrap.openshift4.example.com openshift-etcd 0
如果验证无问题,则可以一边继续下面的步骤一边观察日志:journalctl -b -f -u bootkube.service
RHCOS 的默认用户是
core
,如果想获取 root 权限,可以执行命令sudo su
(不需要输入密码)。
控制节点和之前类似,先创建虚拟机,然后修改引导参数,引导参数调整为:
ip=192.168.57.62::192.168.57.1:255.255.255.0:master1.openshift4.example.com:ens192:none nameserver=192.168.57.60 coreos.inst.install_dev=sda coreos.inst.image_url=http://192.168.57.60:8080/install/rhcos-4.4.3-x86_64-metal.x86_64.raw.gz coreos.inst.ignition_url=http://192.168.57.60:8080/ignition/master.ign
控制节点安装成功后会重启一次,之后同样可以从基础节点通过 SSH 密钥登录。
然后重复相同的步骤创建其他两台控制节点,注意修改引导参数(IP 和主机名)。先不急着创建计算节点,先在基础节点执行以下命令完成生产控制平面的创建:
$ openshift-install --dir=/ocpinstall wait-for bootstrap-complete --log-level=debug
DEBUG OpenShift Installer 4.4.5
DEBUG Built from commit 15eac3785998a5bc250c9f72101a4a9cb767e494
INFO Waiting up to 20m0s for the Kubernetes API at https://api.openshift4.example.com:6443...
INFO API v1.17.1 up
INFO Waiting up to 40m0s for bootstrapping to complete...
DEBUG Bootstrap status: complete
INFO It is now safe to remove the bootstrap resources
待出现 It is now safe to remove the bootstrap resources
提示之后,从负载均衡器中删除引导主机,本文使用的是 Envoy,只需从 cds.yaml
中删除引导主机的 endpoint,然后重新加载就好了。
观察引导节点的日志:
$ journalctl -b -f -u bootkube.service
...
Jun 05 00:24:12 bootstrap.openshift4.example.com bootkube.sh[12571]: I0605 00:24:12.108179 1 waitforceo.go:67] waiting on condition EtcdRunningInCluster in etcd CR /cluster to be True.
Jun 05 00:24:21 bootstrap.openshift4.example.com bootkube.sh[12571]: I0605 00:24:21.595680 1 waitforceo.go:67] waiting on condition EtcdRunningInCluster in etcd CR /cluster to be True.
Jun 05 00:24:26 bootstrap.openshift4.example.com bootkube.sh[12571]: I0605 00:24:26.250214 1 waitforceo.go:67] waiting on condition EtcdRunningInCluster in etcd CR /cluster to be True.
Jun 05 00:24:26 bootstrap.openshift4.example.com bootkube.sh[12571]: I0605 00:24:26.306421 1 waitforceo.go:67] waiting on condition EtcdRunningInCluster in etcd CR /cluster to be True.
Jun 05 00:24:29 bootstrap.openshift4.example.com bootkube.sh[12571]: I0605 00:24:29.097072 1 waitforceo.go:64] Cluster etcd operator bootstrapped successfully
Jun 05 00:24:29 bootstrap.openshift4.example.com bootkube.sh[12571]: I0605 00:24:29.097306 1 waitforceo.go:58] cluster-etcd-operator bootstrap etcd
Jun 05 00:24:29 bootstrap.openshift4.example.com podman[16531]: 2020-06-05 00:24:29.120864426 +0000 UTC m=+17.965364064 container died 77971b6ca31755a89b279fab6f9c04828c4614161c2e678c7cba48348e684517 (image=quay.io/openshift-release-dev/ocp-v4.0-art-dev@sha256:9f7a02df3a5d91326d95e444e2e249f8205632ae986d6dccc7f007ec65c8af77, name=recursing_cerf)
Jun 05 00:24:29 bootstrap.openshift4.example.com bootkube.sh[12571]: bootkube.service complete
计算节点和之前类似,先创建虚拟机,然后修改引导参数,引导参数调整为:
ip=192.168.57.65::192.168.57.1:255.255.255.0:worker1.openshift4.example.com:ens192:none nameserver=192.168.57.60 coreos.inst.install_dev=sda coreos.inst.image_url=http://192.168.57.60:8080/install/rhcos-4.4.3-x86_64-metal.x86_64.raw.gz coreos.inst.ignition_url=http://192.168.57.60:8080/ignition/worker.ign
计算节点安装成功后也会重启一次,之后同样可以从基础节点通过 SSH 密钥登录。
然后重复相同的步骤创建其他计算节点,注意修改引导参数(IP 和主机名)。
可以通过导出集群 kubeconfig 文件以默认系统用户身份登录到集群。kubeconfig 文件包含有关 CLI 用于将客户端连接到正确的集群和 API Server 的集群信息,该文件在 OCP 安装期间被创建。
$ mkdir ~/.kube
$ cp /ocpinstall/auth/kubeconfig ~/.kube/config
$ oc whoami
system:admin
将节点添加到集群时,会为添加的每台节点生成两个待处理证书签名请求(CSR)。必须确认这些 CSR 已获得批准,或者在必要时自行批准。
$ oc get node
NAME STATUS ROLES AGE VERSION
master1.openshift4.example.com Ready master,worker 6h25m v1.17.1
master2.openshift4.example.com Ready master,worker 6h39m v1.17.1
master3.openshift4.example.com Ready master,worker 6h15m v1.17.1
worker1.openshift4.example.com NotReady worker 5h8m v1.17.1
worker2.openshift4.example.com NotReady worker 5h9m v1.17.1
输出列出了创建的所有节点。查看挂起的证书签名请求(CSR),并确保添加到集群的每台节点都能看到具有 Pending
或 Approved
状态的客户端和服务端请求。针对 Pending 状态的 CSR 批准请求:
$ oc adm certificate approve xxx
或者执行以下命令批准所有 CSR:
$ oc get csr -ojson | jq -r ‘.items[] | select(.status == {} ) | .metadata.name‘ | xargs oc adm certificate approve
控制平面初始化后,需要确认所有的 Operator
都处于可用的状态,即确认所有 Operator 的 Available
字段值皆为 True
:
$ oc get clusteroperators
NAME VERSION AVAILABLE PROGRESSING DEGRADED SINCE
authentication 4.4.5 True False False 150m
cloud-credential 4.4.5 True False False 7h7m
cluster-autoscaler 4.4.5 True False False 6h12m
console 4.4.5 True False False 150m
csi-snapshot-controller 4.4.5 True False False 6h13m
dns 4.4.5 True False False 6h37m
etcd 4.4.5 True False False 6h19m
image-registry 4.4.5 True False False 6h12m
ingress 4.4.5 True False False 150m
insights 4.4.5 True False False 6h13m
kube-apiserver 4.4.5 True False False 6h15m
kube-controller-manager 4.4.5 True False False 6h36m
kube-scheduler 4.4.5 True False False 6h36m
kube-storage-version-migrator 4.4.5 True False False 6h36m
machine-api 4.4.5 True False False 6h37m
machine-config 4.4.5 True False False 6h36m
marketplace 4.4.5 True False False 6h12m
monitoring 4.4.5 True False False 6h6m
network 4.4.5 True False False 6h39m
node-tuning 4.4.5 True False False 6h38m
openshift-apiserver 4.4.5 True False False 6h14m
openshift-controller-manager 4.4.5 True False False 6h12m
openshift-samples 4.4.5 True False False 6h11m
operator-lifecycle-manager 4.4.5 True False False 6h37m
operator-lifecycle-manager-catalog 4.4.5 True False False 6h37m
operator-lifecycle-manager-packageserver 4.4.5 True False False 6h15m
service-ca 4.4.5 True False False 6h38m
service-catalog-apiserver 4.4.5 True False False 6h38m
service-catalog-controller-manager 4.4.5 True False False 6h39m
storage 4.4.5 True False False 6h12m
如果 Operator 不正常,需要进行问题诊断和修复。
最后一步,完成集群的安装,执行以下命令:
$ openshift-install --dir=/ocpinstall wait-for install-complete --log-level=debug
注意最后提示访问 Web Console
的网址及用户密码。如果密码忘了也没关系,可以查看文件 /ocpinstall/auth/kubeadmin-password
来获得密码。
本地访问 Web Console,需要添加 hosts:
192.168.57.60 console-openshift-console.apps.openshift4.example.com
192.168.57.60 oauth-openshift.apps.openshift4.example.com
浏览器访问 https://console-openshift-console.apps.openshift4.example.com
,输入上面输出的用户名密码登录。首次登录后会提示:
You are logged in as a temporary administrative user. Update the Cluster OAuth configuration to allow others to log in.
我们可以通过 htpasswd 自定义管理员账号,步骤如下:
① htpasswd -c -B -b users.htpasswd admin xxxxx
② 将 users.htpasswd
文件下载到本地。
③ 在 Web Console 页面打开 Global Configuration
:
然后找到 OAuth
,点击进入,然后添加 HTPasswd
类型的 Identity Providers
,并上传 users.htpasswd
文件。
④ 退出当前用户,注意要退出到如下界面:
选择 htpasswd
,然后输入之前创建的用户名密码登录。
如果退出后出现的就是用户密码输入窗口,实际还是 kube:admin
的校验,如果未出现如上提示,可以手动输入 Web Console 地址来自动跳转。
⑤ 登录后貌似能看到 Administrator
菜单项,但访问如 OAuth Details
仍然提示:
oauths.config.openshift.io "cluster" is forbidden: User "admin" cannot get resource "oauths" in API group "config.openshift.io" at the cluster scope
因此需要授予集群管理员权限:
$ oc adm policy add-cluster-role-to-user cluster-admin admin
Web Console 部分截图:
如果想删除默认账号,可以执行以下命令:
$ oc -n kube-system delete secrets kubeadmin
Kubernetes 1.18.2 1.17.5 1.16.9 1.15.12离线安装包发布地址http://store.lameleg.com ,欢迎体验。 使用了最新的sealos v3.3.6版本。 作了主机名解析配置优化,lvscare 挂载/lib/module解决开机启动ipvs加载问题, 修复lvscare社区netlink与3.10内核不兼容问题,sealos生成百年证书等特性。更多特性 https://github.com/fanux/sealos 。欢迎扫描下方的二维码加入钉钉群 ,钉钉群已经集成sealos的机器人实时可以看到sealos的动态。
Openshift 4.4 静态 IP 离线安装系列:初始安装
标签:select monit 备份文件 cli ecs pods port xxx git
原文地址:https://www.cnblogs.com/ryanyangcs/p/13129768.html