docker2 安装计算节点kube-proxy

部署kube-proxy
签发证书
vi /opt/certs/kube-proxy-csr.json
{
"CN": "system:kube-proxy",
"key": {
"algo": "rsa",
"size": 2048
},
"names": [
{
"C": "CN",
"ST": "beijing",
"L": "beijing",
"O": "od",
"OU": "ops"
}
]
}
gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=client kube-proxy-csr.json |cfssljson -bare kube-proxy-client
将证书拷贝到节点
scp kube-proxy-client.pem kube-proxy-client-key.pem 192.168.17.53:/opt/kubernetes/server/bin/cert
scp kube-proxy-client.pem kube-proxy-client-key.pem 192.168.17.54:/opt/kubernetes/server/bin/cert
创建kube-proxy配置文件，只做一次，然后将kube-proxy.kubeconfig拷贝至各个node节点
cd /opt/kubernetes/server/bin/conf
# --server=https://192.168.153.10:7443 此IP地址是keeplive的VIP地址，注意修改
[root@hdss7-21 conf]# kubectl config set-cluster myk8s \
--certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \
--embed-certs=true \
--server=https://192.168.17.50:7443 \
--kubeconfig=kube-proxy.kubeconfig

kubectl config set-credentials kube-proxy \
--client-certificate=/opt/kubernetes/server/bin/cert/kube-proxy-client.pem \
--client-key=/opt/kubernetes/server/bin/cert/kube-proxy-client-key.pem \
--embed-certs=true \
--kubeconfig=kube-proxy.kubeconfig

kubectl config set-context myk8s-context \
--cluster=myk8s \
--user=kube-proxy \
--kubeconfig=kube-proxy.kubeconfig

kubectl config use-context myk8s-context --kubeconfig=kube-proxy.kubeconfig

拷贝配置文件至另外节点
scp kube-proxy.kubeconfig 192.168.17.54:/opt/kubernetes/server/bin/conf

加载ipvs模块
vi /root/ipvs.sh
#!/bin/bash
ipvs_mods_dir="/usr/lib/modules/$(uname -r)/kernel/net/netfilter/ipvs"
for i in $(ls $ipvs_mods_dir|grep -o "^[^.]*")
do
/sbin/modinfo -F filename $i &>/dev/null
if [ $? -eq 0 ];then
/sbin/modprobe $i
fi
done
chmod 755 /root/ipvs.sh
/root/ipvs.sh
查看内核是否加载ipvs模块
lsmod | grep ip_vs
设置开机自动启动
vi /etc/rc.d/rc.local
创建kube-proxy启动脚本
vi /opt/kubernetes/server/bin/kube-proxy.sh
#!/bin/sh
./kube-proxy \
--cluster-cidr 172.7.0.0/16 \
--hostname-override k8s3.host.com \
--proxy-mode=ipvs \
--ipvs-scheduler=nq \
--kubeconfig ./conf/kube-proxy.kubeconfig
赋予权限和创建目录
chmod +x /opt/kubernetes/server/bin/kube-proxy.sh
mkdir -p /data/logs/kubernetes/kube-proxy
配置supervisord
vi /etc/supervisord.d/kube-proxy.ini
[program:kube-proxy-17-53]
command=/opt/kubernetes/server/bin/kube-proxy.sh ; the program (relative uses PATH, can take args)
numprocs=1 ; number of processes copies to start (def 1)
directory=/opt/kubernetes/server/bin ; directory to cwd to before exec (def no cwd)
autostart=true ; start at supervisord start (default: true)
autorestart=true ; retstart at unexpected quit (default: true)
startsecs=30 ; number of secs prog must stay running (def. 1)
startretries=3 ; max # of serial start failures (default 3)
exitcodes=0,2 ; 'expected' exit codes for process (default 0,2)
stopsignal=QUIT ; signal used to kill process (default TERM)
stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
user=root ; setuid to this UNIX account to run the program
redirect_stderr=true ; redirect proc stderr to stdout (default false)
stdout_logfile=/data/logs/kubernetes/kube-proxy/proxy.stdout.log ; stderr log path, NONE for none; default AUTO
stdout_logfile_maxbytes=64MB ; max # logfile bytes b4 rotation (default 50MB)
stdout_logfile_backups=4 ; # of stdout logfile backups (default 10)
stdout_capture_maxbytes=1MB ; number of bytes in 'capturemode' (default 0)
stdout_events_enabled=false ; emit events on stdout writes (default false)
启动
supervisorctl update

查看ipvs是否生效
yum install -y ipvsadm
ipvsadm -Ln