1、新增节点信息
增加节点如下，请将xxx改为自己的域名
|
node6.xxx.net |
Node |
192.168.8.90 |
8G |
20G/60G |
4C |
|
node7.xxx.net |
Node |
192.168.8.91 |
8G |
20G/60G |
4C |
2、基本配置
关闭Firewalld
[root@node6 ~]# systemctl stop firewalld [root@node6 ~]# systemctl disabled firewalld Unknown operation 'disabled'. [root@node6 ~]# systemctl disable firewalld Removed symlink /etc/systemd/system/multi-user.target.wants/firewalld.service. Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
更改所有节点hosts
192.168.10.110 master1.xxx.net 192.168.10.112 node1.xxx.net 192.168.10.113 node2.xxx.net 192.168.10.116 node3.xxx.net 192.168.10.114 node4.xxx.net 192.168.10.117 node5.xxx.net 192.168.10.109 etcd1.xxx.net 192.168.10.111 etcd2.xxx.net 192.168.10.115 etcd3.xxx.net 192.168.8.90 node6.xxx.net 192.168.8.91 node7.xxx.net
Master1节点SSH互信
[root@master1 ~]# ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Created directory '/root/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: SHA256:yFOKV/QRdQoxQ12uW8v0UWmpLcrxDQo8VNyVEuRWHlE root@master1.xxx.net The key's randomart image is: +---[RSA 2048]----+ | ..X*++==E| | . ..*o*o.+| | o.. .oo=.| | o =o ..+ .| | . * S+ ..+oo | | . . + ==+o.| | +..o..| | | | | +----[SHA256]-----+ for i in node6.xxx.net node7.xxx.net;do ssh-copy-id -i ~/.ssh/id_rsa.pub $i;done
所有节点更改时区并同步时间
ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime ntpdate time.windows.com
所有节点安装基本环境
yum install wget git net-tools bind-utils iptables-services bridge-utils bash-completion kexec-tools sos psacct vim -y
# 剩余步骤与之前一致,参考上一篇文档
master1更改/etc/ansible/hosts
# Create an OSEv3 group that contains the masters, nodes, and etcd groups [OSEv3:children] masters nodes etcd new_nodes #lb # Set variables common for all OSEv3 hosts [OSEv3:vars] # SSH user, this user should allow ssh based auth without requiring a password ansible_ssh_user=root ansible_become=yes debug_level=2 openshift_deployment_type=origin # If ansible_ssh_user is not root, ansible_become must be set to true #ansible_become=true openshift_repos_enable_testing=true openshift_enable_service_catalog=false template_service_broker_install=false # uncomment the following to enable htpasswd authentication; defaults to DenyAllPasswordIdentityProvider openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider', 'filename': '/etc/origin/master/htpasswd'}] openshift_disable_check=disk_availability,docker_storage,memory_availability,docker_image_availability,package_version # config for metrics openshift_release=3.6.1 openshift_metrics_install_metrics=true openshift_metrics_cassandra_storage_type=emptydir openshift_metrics_hawkular_hostname=metrics.xxx.net openshift_clock_enabled=true #openshift_master_cluster_method=native #openshift_master_cluster_hostname=openshift.xxx.net #openshift_master_cluster_public_hostname=openshift.xxx.net #openshift_node_kubelet_args={'pods-per-core': ['10'], 'max-pods': ['250'], 'image-gc-high-threshold': ['90'], 'image-gc-low-threshold': ['80']} # host group for masters [masters] master1.xxx.net #master2.xxx.net # host group for lb #[lb] #lb.xxx.net # host group for etcd [etcd] etcd1.xxx.net etcd2.xxx.net etcd3.xxx.net # host group for nodes, includes region info [nodes] master1.xxx.net #master2.xxx.net node1.xxx.net openshift_node_labels="{'region': 'infra', 'zone': 'default'}" node2.xxx.net openshift_node_labels="{'region': 'infra', 'zone': 'default'}" node3.xxx.net openshift_node_labels="{'region': 'infra', 'zone': 'default'}" node4.xxx.net node5.xxx.net # [new_nodes] node6.xxx.net openshift_node_labels="{'region': 'subnet8', 'zone': 'default'}" node7.xxx.net openshift_node_labels="{'region': 'subnet8', 'zone': 'default'}"
3、安装
执行安装：
ansible-playbook -i /etc/ansible/hosts /usr/share/ansible/openshift-ansible/playbooks/byo/openshift-node/scaleup.yml
安装完成后，新加节点修改docker配置/etc/sysconfig/docker
OPTIONS=' --selinux-enabled --log-driver=journald --registry-mirror=https://docker.mirrors.ustc.edu.cn --insecure-registry=172.30.0.0/16 --insecure-registry 192.168.10.110:5000'
4、其他组件
其他组件如etcd、master节点扩容类似，参考文档：https://docs.openshift.org/3.6/install_config/adding_hosts_to_existing_cluster.html
