kubernetes部署-ETCD(一)
程序员文章站
2022-07-13 21:11:41
...
规划
1台controller: 10.167.130.205
2台node: 10.167.130.206,210
IP地址 | 主机名 |
---|---|
10.167.130.205 | node |
10.167.130.206 | node1 |
10.167.130.210 | node2 |
节点 | 组件 |
---|---|
node | etcd,kube-apiserver,flanneld,docker,kube-scheduler,kube-controller-manager |
node1 | etcd,kube-proxy,kubelet,flanneld,docker |
node2 | etcd,kube-proxy,kubelet,flanneld,docker |
准备工作基础环境配置
关防火墙
systemctl stop firewalld && systemctl disable firewalld
setenforce 0 #临时生效
vi /etc/selinux/config
SELINUX=disabled
vim /etc/hosts #修改3台主机的host
10.167.130.205 node
10.167.130.206 node01
10.167.130.210 node02
关闭swap
swapoff -a && sysctl -w vm.swappiness=0
vi /etc/fstab
#UUID=7bff6243-324c-4587-b550-55dc34018ebf swap swap defaults 0 0
cat << EOF | tee /etc/sysctl.d/k8s.conf
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
应用系统配置
sysctl -p /etc/sysctl.d/k8s.conf
安装软件包以及配置安装源
mkdir /data/docker
#安装必须的包。yum-utils提供了yum-config-manager实用程序,并且device-mapper-persistent-data和lvm2需要devicemapper存储驱动程序。
yum install -y yum-utils device-mapper-persistent-data lvm2
#使用以下命令设置稳定存储库。 您始终需要稳定的存储库,即使您也想从边缘或测试存储库安装构建。
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum makecache fast
yum -y install docker-ce
docker version
systemctl enable docker.service
systemctl start docker.service
mkdir -p /etc/docker
tee /etc/docker/daemon.json <<-'EOF'
{"registry-mirrors":["https://registry.docker-cn.com"],"graph": "/data/docker"}
EOF
systemctl daemon-reload
systemctl restart docker
ETCD配置
node | node1 | node2 |
---|---|---|
10.167.130.205 | 10.167.130.206 | 10.167.130.210 |
软件包安装证书生成工具cfssl:
mkdir /data/ssl -p
cd /data/
wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64
chmod +x cfssl_linux-amd64 cfssljson_linux-amd64 cfssl-certinfo_linux-amd64
mv cfssl_linux-amd64 /usr/local/bin/cfssl
mv cfssljson_linux-amd64 /usr/local/bin/cfssljson
mv cfssl-certinfo_linux-amd64 /usr/bin/cfssl-certinfo
cd /data/ssl/
二进制包下载地址:https://github.com/etcd-io/etcd/releases/tag/v3.3.10
下载 etcd-v3.3.10-linux-amd64.tar.gz
生成etc集群所需要的key
mkdir /data/ssl/etcd
cd /data/ssl/etcd
vim etcd.sh
# etcd
# cat ca-config.json
cat > ca-config.json <<EOF
{
"signing": {
"default": {
"expiry": "87600h"
},
"profiles": {
"www": {
"expiry": "87600h",
"usages": [
"signing",
"key encipherment",
"server auth",
"client auth"
]
}
}
}
}
EOF
# cat ca-csr.json
cat > ca-csr.json <<EOF
{
"CN": "etcd CA",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "Beijing",
"ST": "Beijing"
}
]
}
EOF
# cat server-csr.json
cat > server-csr.json <<EOF
{
"CN": "etcd",
"hosts": [
"192.168.100.100",
"192.168.100.101",
"192.168.100.102"
],
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"L": "BeiJing",
"ST": "BeiJing"
}
]
}
EOF
sh etcd.sh
cfssl gencert -initca ca-csr.json | cfssljson -bare ca -
cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=www server-csr.json | cfssljson -bare server
# ls *pem
ca-key.pem ca.pem server-key.pem server.pem
部署etcd
3个节点 都操作
mkdir /data/src/
cd /data/src/
mkdir /opt/etcd/{bin,cfg,ssl} -p
tar xf etcd-v3.3.10-linux-amd64.tar.gz
mv etcd-v3.3.10-linux-amd64/{etcd,etcdctl} /opt/etcd/bin/
vim /opt/etcd/cfg/etcd
# 3台机器 ETCD_NAME 名字不一样 本机IP不一样
#[Member]
ETCD_NAME="node"
ETCD_DATA_DIR="/var/lib/etcd/default.etcd"
ETCD_LISTEN_PEER_URLS="https://10.167.130.205:2380" #更改为本机地址
ETCD_LISTEN_CLIENT_URLS="https://10.167.130.205:2379" #更改为本机地址
#[Clustering]
ETCD_INITIAL_ADVERTISE_PEER_URLS="https://10.167.130.205:2380" #更改为本机地址
ETCD_ADVERTISE_CLIENT_URLS="https://10.167.130.205:2379" #更改为本机地址
ETCD_INITIAL_CLUSTER="node=https://10.167.130.205:2380,node1=https://10.167.130.206:2380,node2=https://10.167.130.210:2380"
ETCD_INITIAL_CLUSTER_TOKEN="etcd-cluster"
ETCD_INITIAL_CLUSTER_STATE="new"
* ETCD_NAME 节点名称
* ETCD_DATA_DIR 数据目录
* ETCD_LISTEN_PEER_URLS 集群通信监听地址
* ETCD_LISTEN_CLIENT_URLS 客户端访问监听地址
* ETCD_INITIAL_ADVERTISE_PEER_URLS 集群通告地址
* ETCD_ADVERTISE_CLIENT_URLS 客户端通告地址
* ETCD_INITIAL_CLUSTER 集群节点地址
* ETCD_INITIAL_CLUSTER_TOKEN 集群Token
* ETCD_INITIAL_CLUSTER_STATE 加入集群的当前状态,new是新集群,existing表示加入已有集群
vim /usr/lib/systemd/system/etcd.service #添加etcd服务文件
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
[Unit]
Description=Etcd Server
After=network.target
After=network-online.target
Wants=network-online.target
[Service]
Type=notify
EnvironmentFile=/opt/etcd/cfg/etcd
ExecStart=/opt/etcd/bin/etcd \
--name=${ETCD_NAME} \
--data-dir=${ETCD_DATA_DIR} \
--listen-peer-urls=${ETCD_LISTEN_PEER_URLS} \
--listen-client-urls=${ETCD_LISTEN_CLIENT_URLS},http://127.0.0.1:2379 \
--advertise-client-urls=${ETCD_ADVERTISE_CLIENT_URLS} \
--initial-advertise-peer-urls=${ETCD_INITIAL_ADVERTISE_PEER_URLS} \
--initial-cluster=${ETCD_INITIAL_CLUSTER} \
--initial-cluster-token=${ETCD_INITIAL_CLUSTER_TOKEN} \
--initial-cluster-state=new \
--cert-file=/opt/etcd/ssl/server.pem \
--key-file=/opt/etcd/ssl/server-key.pem \
--peer-cert-file=/opt/etcd/ssl/server.pem \
--peer-key-file=/opt/etcd/ssl/server-key.pem \
--trusted-ca-file=/opt/etcd/ssl/ca.pem \
--peer-trusted-ca-file=/opt/etcd/ssl/ca.pem
Restart=on-failure
LimitNOFILE=65536
[Install]
WantedBy=multi-user.target
cp /data/ssl/etcd/ca*pem /opt/etcd/ssl/
cp /data/ssl/etcd/server*pem /opt/etcd/ssl/
#拷贝生成的etcd证书文件到etcd工作目录里
scp /data/ssl/etcd/ca*pem [email protected]:/opt/etcd/ssl/
scp /data/ssl/etcd/ca*pem [email protected]:/opt/etcd/ssl/
scp /data/ssl/etcd/server*pem [email protected]:/opt/etcd/ssl/
scp /data/ssl/etcd/server*pem [email protected]:/opt/etcd/ssl/
scp /usr/lib/systemd/system/etcd.service [email protected]:/usr/lib/systemd/system/etcd.service
scp /usr/lib/systemd/system/etcd.service [email protected]:/usr/lib/systemd/system/etcd.service
systemctl daemon-reload
systemctl enable etcd
systemctl start etcd
检查查看集群状态:
cd /data/ssl/etcd/
/opt/etcd/bin/etcdctl --ca-file=ca.pem --cert-file=server.pem --key-file=server-key.pem --endpoints="https://10.167.130.205:2379,https://10.167.130.206:2379,https://10.167.130.210:2379" cluster-health
member 65f49728d3d54972 is healthy: got healthy result from https://192.168.100.100:2379
member d94ba21c17c75ffb is healthy: got healthy result from https://192.168.100.101:2379
member dc51f874259f7894 is healthy: got healthy result from https://192.168.100.102:2379
cluster is healthy
# 如果有问题第一步先看日志:/var/log/message 或 journalctl -u etcd
此处etcd集群遇到了一个问题 205在线显示正常 206 210 在线就显示不正常 这两组一直抢占
最后发现是之前有装过etcd 默认的数据文件default.etcd 已经生成了 咱们从新配置的etcd数据文件被命名成了default.etcd1 我们配置文件又指定的default.etcd 所以会有问题
[[email protected] etcd]# ls
default.etcd default.etcd1
[[email protected] etcd]# pwd
/var/lib/etcd
上一篇: TIM1输入捕获测量方波信号周期
下一篇: 带权重的随机Java实现
推荐阅读
-
PHP在IIS7中部署后,外网IE打开的时候会出现404,其浏览器一切正常
-
php5.3.10自动化部署脚本第一版_PHP教程
-
部署一个Laravel 5的应用选用哪家服务好?
-
springboot项目打成war包部署到tomcat遇到的一些问题
-
springboot工程使用idea打包成jar包,并部署到阿里云Linux服务器,并能一直处于运行状态
-
第一节:cas介绍以及部署和或者更多用户信息 博客分类: java
-
一些Centos Python 生产环境的部署命令(推荐)
-
Kubernetes初探[1]:部署你的第一个ASP.NET Core应用到k8s集群
-
关于asp.net利用mono部署到Linux上的一些说明
-
运维自动化之系统部署(一)