二進制部署k8s

時間 2020-05-27

標籤二進制部署 k8s 简体版

原文原文鏈接

共五臺虛擬機node

主機名	IP	用途	部署軟件
hdss7-11.host.com	10.4.7.11	node	named,keepliaved
hdss7-12.host.com	10.4.7.12	node	etcd,keepliaved
hdss7-21.host.com	10.4.7.21	master	kubelet,kube-proxy etcd,flanneld,apiserver,controller-manager
hdss7-22.host.com	10.4.7.22	master	kubelet,kube-proxy etcd,flanneld,controller-manager
hdss7-200.host.com mysql	10.4.7.200	node	harbor

主機名命名規範，不建議主機名和業務掛鉤，例如mysql-01；redis-02 以上這種，由於主機可能上線下linux

部署bind服務nginx

編輯主配置文件：git

options {
listen-on port 53 { 10.4.7.11; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
recursing-file  "/var/named/data/named.recursing";
secroots-file   "/var/named/data/named.secroots";
allow-query     { any; };
        forwarders      { 10.4.7.1; };
[root@hdss7-11 ~]# named-checkconf
/etc/named.conf:21: missing ';' before '}'
[root@hdss7-11 ~]# named-checkconf

檢查語法沒有任何輸出時，配置即爲正確github

編輯區域配置文件：一個是主機域，一個是業務域web

[root@hdss7-11 ~]# cat /etc/named.rfc1912.zones
zone "localhost.localdomain" IN {
type master;
file "named.localhost";
allow-update { none; };
};
zone "localhost" IN {
type master;
file "named.localhost";
allow-update { none; };
};
zone "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" IN {
type master;
file "named.loopback";
allow-update { none; };
};
zone "1.0.0.127.in-addr.arpa" IN {
type master;
file "named.loopback";
allow-update { none; };
};
zone "0.in-addr.arpa" IN {
type master;
file "named.empty";
allow-update { none; };
};
zone "host.com" IN {
type master;
file "host.com.zone";
        allow-update { 10.4.7.11; };
};
zone "od.com" IN {
type master;
file "od.com.zone";
        allow-update { 10.4.7.11; };
};

配置區域數據文件：redis

[root@hdss7-11 named]# cat host.com.zone
$ORIGIN host.com.
$TTL 600 ; 10 minutes
@IN SOAdns.host.com. dnsadmin.host.com. (
2019111001 ; serial
10800; refresh
900    ; retry
604800; expire
86400 ; minimum
)
NSdns.host.com.
$TTL 60 ; 1 minute
dns  A  10.4.7.11
HDSS7-11 A 10.4.7.11
HDSS7-12 A 10.4.7.12
HDSS7-21 A 10.4.7.21
HDSS7-22 A 10.4.7.22
HDSS7-200 A 10.4.7.200
[root@hdss7-11 named]# cat od.com.zone
$ORIGIN od.com.
$TTL 600        ; 10 minutes
@ IN SOA dns.od.com. dnsadmin.od.com. (
                          2019111001 ; serial
                          10800      ; refresh (3 hours)
                          900        ; retry (15 minutes)
                          604800     ; expire (1 week)
                          86400      ; minimum (1 day)
                          )
     NS dns.od.com.
$TTL 60 ; 1 minute
dns           A 10.4.7.11

而後啓動dns服務sql

systemctl restart named

解析驗證：docker

[root@hdss7-11 named]# dig -t A hdss7-11.host.com @10.4.7.11 +short

10.4.7.11

[root@hdss7-11 named]# dig -t A hdss7-200.host.com @10.4.7.11 +short

10.4.7.200

客戶端修改上游DNS服務端地址，指向咱們剛搭建的dns服務：

[root@hdss7-11 named]# grep DNS1 /etc/sysconfig/network-scripts/ifcfg-eth0
DNS1=10.4.7.11
[root@hdss7-11 named]# systemctl restart network
[root@hdss7-11 named]# cat /etc/resolv.conf
# Generated by NetworkManager

# 這裏的search 是指支持使用短域名來進行解析，通常會將主機名支持短域名，業務域名通常使用正常域名

search host.com
nameserver 10.4.7.11
[root@hdss7-11 named]# ping hdss7-22
PING HDSS7-22.host.com (10.4.7.22) 56(84) bytes of data.
64 bytes from 10.4.7.22: icmp_seq=1 ttl=64 time=0.637 ms
64 bytes from 10.4.7.22: icmp_seq=2 ttl=64 time=0.419 ms
[root@hdss7-11 named]# ping baidu.com
PING baidu.com (39.156.69.79) 56(84) bytes of data.
64 bytes from 39.156.69.79: icmp_seq=1 ttl=128 time=30.4 ms
64 bytes from 39.156.69.79: icmp_seq=2 ttl=128 time=28.0 ms

準備證書籤發環境：

wget wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 -O /usr/bin/cfssl
wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 -O /usr/bin/cfssl-json
wget https://pkg.cfssl.org/R1.2/cfssl-certinfo_linux-amd64 -O /usr/bin/cfssl-certinfo
chmod +x /usr/bin/cfssl*

建立生成CA證書籤名請求（csr）的json配置文件：

[root@hdss7-200 certs]# cat ca-csr.json
{
    "CN": "DayaZZ",
    "hosts": [
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ],
    "ca": {
        "expiry": "175200h"
    }
}

cfssl gencert -initca ca-csr.json |cfssl-json -bare ca

部署docker環境：

hdss7-200/hdss7-21/hdss7-22
mkdir -p /etc/docker /data/docker
vim /etc/docker/daemon.json
{
  "graph": "/data/docker",
  "storage-driver": "overlay2",
  "insecure-registries": ["registry.access.redhat.com","quay.io","harbor.od.com"],
  "registry-mirrors": ["https://q2gr04ke.mirror.aliyuncs.com"],
  "bip": "172.7.200.1/24",    # 注意修改這個ip段，由於是hdss7-200，因此爲172.7.200
  "exec-opts": ["native.cgroupdriver=systemd"],
  "live-restore": true
}

部署harbor私有鏡像倉庫：

hdss7-200主機操做：
https://github.com/goharbor/harbor 
tar xf harbor-offline-installer-v1.8.3.tgz  -C /opt/

增長版本標示，便於之後升級

mv harbor harbor-v1.8.3
ln -s /opt/harbor-v1.8.3 harbor

修改配置文件：/opt/harbor/harbor.yml

hostname: harbor.od.com
http:
  port: 180
data_volume: /data/harbor
location: /data/harbor/logs
mkdir -p /data/harbor/logs
yum install docker-compose -y
sh /opt/harbor/install.sh

查看狀態：

[root@hdss7-200 harbor]# docker-compose ps
      Name                     Command               State             Ports
--------------------------------------------------------------------------------------
harbor-core         /harbor/start.sh                 Up
harbor-db           /entrypoint.sh postgres          Up      5432/tcp
harbor-jobservice   /harbor/start.sh                 Up
harbor-log          /bin/sh -c /usr/local/bin/ ...   Up      127.0.0.1:1514->10514/tcp
harbor-portal       nginx -g daemon off;             Up      80/tcp
nginx               nginx -g daemon off;             Up      0.0.0.0:180->80/tcp
redis               docker-entrypoint.sh redis ...   Up      6379/tcp
registry            /entrypoint.sh /etc/regist ...   Up      5000/tcp
registryctl         /harbor/start.sh                 Up

安裝nginx，反代harbor的180端口：

yum install nginx -y
[root@hdss7-200 conf.d]# cat /etc/nginx/conf.d/harbor.od.com.conf
server {
    listen       80;
    server_name  harbor.od.com;
    client_max_body_size 1000m;
    location / {
        proxy_pass http://127.0.0.1:180;
    }
}
systemctl start nginx
systemctl enable nginx

給harbor配置內網域名：

hdss7-11操做：
[root@hdss7-11 ~]# cat /var/named/od.com.zone
$ORIGIN od.com.
$TTL 600; 10 minutes
@   IN SOAdns.od.com. dnsadmin.od.com. (
2019111002 ; serial
10800      ; refresh (3 hours)
900        ; retry (15 minutes)
604800     ; expire (1 week)
86400      ; minimum (1 day)
)
NS   dns.od.com.
$TTL 60; 1 minute
dns                A    10.4.7.11
harbor             A    10.4.7.200
serial 號+1 ，重啓後named服務
systemctl restart named
[root@hdss7-200 ~]# dig harbor.od.com +short
10.4.7.200

瀏覽器登陸harbor，新建倉庫：

下載鏡像：

[root@hdss7-200 certs]# docker pull nginx:1.7.9
docker tag 84581e99d807 harbor.od.com/public/nginx:v1.7.9
[root@hdss7-200 certs]# docker login harbor.od.com
Username: admin
Password:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
Login Succeeded
[root@hdss7-200 certs]# docker push harbor.od.com/public/nginx:v1.7.9

開始部署master節點的服務：

部署etcd集羣：

集羣規劃：

主機名	角色	IP
hdss7-12.host.com	leader	10.4.7.12
hdss7-21.host.com	follow	10.4.7.21
hdss7-22.host.com	follow	10.4.7.22

[root@hdss7-200 certs]# cat /opt/certs/ca-config.json
{
    "signing": {
        "default": {
            "expiry": "175200h"
        },
        "profiles": {
            "server": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth"
                ]
            },
            "client": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "client auth"
                ]
            },
            "peer": {
                "expiry": "175200h",
                "usages": [
                    "signing",
                    "key encipherment",
                    "server auth",
                    "client auth"
                ]
            }
        }
    }
}
[root@hdss7-200 certs]# cat /opt/certs/etcd-peer-csr.json
{
    "CN": "k8s-etcd",
    "hosts": [
        "10.4.7.11",
        "10.4.7.12",
        "10.4.7.21",
        "10.4.7.22"
    ],
    "key": {
        "algo": "rsa",
        "size": 2048
    },
    "names": [
        {
            "C": "CN",
            "ST": "beijing",
            "L": "beijing",
            "O": "od",
            "OU": "ops"
        }
    ]
}
[root@hdss7-200 certs]# cfssl gencert -ca=ca.pem -ca-key=ca-key.pem -config=ca-config.json -profile=peer etcd-peer-csr.json |cfssl-json -bare etcd-peer
2020/03/25 21:41:00 [INFO] generate received request
2020/03/25 21:41:00 [INFO] received CSR
2020/03/25 21:41:00 [INFO] generating key: rsa-2048
2020/03/25 21:41:00 [INFO] encoded CSR
2020/03/25 21:41:00 [INFO] signed certificate with serial number 724689607557459896267199932166764372562376760465
2020/03/25 21:41:00 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
websites. For more information see the Baseline Requirements for the Issuance and Management
of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
specifically, section 10.2.3 ("Information Requirements").
[root@hdss7-12 ~]# useradd -s /sbin/nologin -M etcd
[root@hdss7-12 tmp]# mkdir -p /data/etcd /data/logs/etcd-server
[root@hdss7-12 tmp]# tar -xf etcd-v3.1.20-linux-amd64.tar.gz -C /opt/
[root@hdss7-12 opt]# mv etcd-v3.1.20-linux-amd64 etcd-v3.1.20
[root@hdss7-12 opt]# ln -s /opt/etcd-v3.1.20 etcd
將兩張證書一張私鑰拷貝到機器上：
[root@hdss7-12 certs]# ll
總用量 12
-rw-r--r-- 1 root root 1338 3月  25 22:00 ca.pem
-rw------- 1 root root 1679 3月  25 22:03 etcd-peer-key.pem
-rw-r--r-- 1 root root 1424 3月  25 21:58 etcd-peer.pem
啓動文件：
cat /opt/etcd/etcd-server-startup.sh
chmod +x /opt/etcd/etcd-server-startup.sh
#!/bin/sh
./etcd --name etcd-server-7-12 \
       --data-dir /data/etcd/etcd-server \
       --listen-peer-urls https://10.4.7.12:2380 \
       --listen-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \
       --quota-backend-bytes 8000000000 \ 
       --initial-advertise-peer-urls https://10.4.7.12:2380 \
       --advertise-client-urls https://10.4.7.12:2379,http://127.0.0.1:2379 \
       --initial-cluster  etcd-server-7-12=https://10.4.7.12:2380,etcd-server-7-21=https://10.4.7.21:2380,etcd-server-7-22=https://10.4.7.22:2380 \
       --ca-file ./certs/ca.pem \
       --cert-file ./certs/etcd-peer.pem \
       --key-file ./certs/etcd-peer-key.pem \
       --client-cert-auth  \
       --trusted-ca-file ./certs/ca.pem \
       --peer-ca-file ./certs/ca.pem \
       --peer-cert-file ./certs/etcd-peer.pem \
       --peer-key-file ./certs/etcd-peer-key.pem \
       --peer-client-cert-auth \
       --peer-trusted-ca-file ./certs/ca.pem \
       --log-output stdout
chown -R etcd.etcd /opt/etcd-v3.1.20/
[root@hdss7-12 etcd]# chown -R etcd:etcd /data/etcd/
[root@hdss7-12 etcd]# chown -R etcd:etcd /data/logs/etcd-server/
[root@hdss7-12 etcd]# yum install supervisor -y
[root@hdss7-12 etcd]# systemctl start supervisord
[root@hdss7-12 etcd]# systemctl enable supervisord
[root@hdss7-12 etcd]# supervisorctl status
etcd-server-7-12                 RUNNING   pid 20034, uptime 0:01:05
[root@hdss7-12 etcd]# netstat -nap|grep etcd
tcp        0      0 10.4.7.12:2379          0.0.0.0:*               LISTEN      20035/./etcd
tcp        0      0 127.0.0.1:2379          0.0.0.0:*               LISTEN      20035/./etcd
tcp        0      0 10.4.7.12:2380          0.0.0.0:*               LISTEN      20035/./etcd
unix  2      [ ]         DGRAM                    416989   20035/./etcd

檢查etcd健康狀態：

[root@hdss7-22 etcd]# ./etcdctl cluster-health

member 988139385f78284 is healthy: got healthy result from http://127.0.0.1:2379

member 5a0ef2a004fc4349 is healthy: got healthy result from http://127.0.0.1:2379

member f4a0cb0a765574a8 is healthy: got healthy result from http://127.0.0.1:2379

cluster is healthy

[root@hdss7-22 etcd]# ./etcdctl member list

988139385f78284: name=etcd-server-7-22 peerURLs=https://10.4.7.22:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.22:2379 isLeader=false

5a0ef2a004fc4349: name=etcd-server-7-21 peerURLs=https://10.4.7.21:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.21:2379 isLeader=false

f4a0cb0a765574a8: name=etcd-server-7-12 peerURLs=https://10.4.7.12:2380 clientURLs=http://127.0.0.1:2379,https://10.4.7.12:2379 isLeader=true

部署master節點apiserver

簽發client證書（client證書是apiserver和etcd通訊時使用的證書）：

[root@hdss7-12 nginx]# yum install keepalived -y

keepalived 主節點：

[root@hdss7-11 keepalived]# cat keepalived.conf

! Configuration File for keepalived

global_defs {

router_id 10.4.7.11

}

vrrp_script chk_nginx {

script "/etc/keepalived/check_port.sh 7443"

interval 2

weight -20

}

vrrp_instance VI_1 {

state MASTER

interface eth0

virtual_router_id 251

priority 100

advert_int 1

mcast_src_ip 10.4.7.11

nopreempt

authentication {

auth_type PASS

auth_pass 11111111

}

track_script {

chk_nginx

}

virtual_ipaddress {

10.4.7.10

}

keepalived 從節點：

[root@hdss7-12 keepalived]# cat keepalived.conf

! Configuration File for keepalived

global_defs {

router_id 10.4.7.12

}

vrrp_script chk_nginx {

script "/etc/keepalived/check_port.sh 7443"

interval 2

weight -20

}

vrrp_instance VI_1 {

state BACKUP

interface eth0

virtual_router_id 251

mcast_src_ip 10.4.7.12

priority 90

advert_int 1

authentication {

auth_type PASS

auth_pass 11111111

}

track_script {

chk_nginx

}

virtual_ipaddress {

10.4.7.10

}

啓動兩臺機器上的keepalived 而後在主節點查看VIP是否綁定成功

systemctl start keepalived
systemctl enable keepalived
[root@hdss7-11 keepalived]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:50:56:ad:fb:d7 brd ff:ff:ff:ff:ff:ff
    inet 10.4.7.11/16 brd 10.4.255.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet 10.4.7.10/32 scope global eth0
       valid_lft forever preferred_lft forever

[root@hdss7-21 supervisord.d]# kubectl get cs

NAME STATUS MESSAGE ERROR

etcd-0 Healthy {"health": "true"}

etcd-2 Healthy {"health": "true"}

etcd-1 Healthy {"health": "true"}

scheduler Healthy ok

controller-manager Healthy ok

[root@hdss7-21 conf]# kubectl config set-cluster myk8s \

> --certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \

> --embed-certs=true \

> --server=https://10.4.7.11:7443 \

> --kubeconfig=kubelet.kubeconfig

Cluster "myk8s" set.

[root@hdss7-21 conf]# kubectl config set-credentials k8s-node \

> --client-certificate=/opt/kubernetes/server/bin/cert/client.pem \

> --client-key=/opt/kubernetes/server/bin/cert/client-key.pem \

> --embed-certs=true \

> --kubeconfig=kubelet.kubeconfig

[root@hdss7-21 conf]# kubectl config set-context myk8s-context \

> --cluster=myk8s \

> --user=k8s-node \

> --kubeconfig=kubelet.kubeconfig

Context "myk8s-context" created.

[root@hdss7-21 conf]# kubectl config use-context myk8s-context --kubeconfig=kubelet.kubeconfig

Switched to context "myk8s-context".

建立一個k8s-node的資源，讓k8s-node這個用戶具有集羣中運算節點的權限

[root@hdss7-21 conf]# kubectl apply -f k8s-node.yaml

clusterrolebinding.rbac.authorization.k8s.io/k8s-node created

[root@hdss7-21 conf]# kubectl get clusterrolebinding k8s-node -o yaml

apiVersion: rbac.authorization.k8s.io/v1

kind: ClusterRoleBinding

metadata:

annotations:

kubectl.kubernetes.io/last-applied-configuration: |

{"apiVersion":"rbac.authorization.k8s.io/v1","kind":"ClusterRoleBinding","metadata":{"annotations":{},"name":"k8s-node"},"roleRef":{"apiGroup":"rbac.authorization.k8s.io","kind":"ClusterRole","name":"system:node"},"subjects":[{"apiGroup":"rbac.authorization.k8s.io","kind":"User","name":"k8s-node"}]}

creationTimestamp: "2020-03-26T14:00:26Z"

resourceVersion: "19187"

selfLink: /apis/rbac.authorization.k8s.io/v1/clusterrolebindings/k8s-node

uid: 8b7856de-2ee7-4c3b-be8f-992f2eb19d69

roleRef:

apiGroup: rbac.authorization.k8s.io

kind: ClusterRole

subjects:

- apiGroup: rbac.authorization.k8s.io

kind: User

[root@hdss7-21 conf]# kubectl get clusterrolebinding k8s-node

NAME AGE

k8s-node 2m7s

將kubelet.kubeconfig拷貝到hdss7-22 上：

準備pause基礎鏡像：

負責給業務容器初始化

[root@hdss7-200 ~]# docker pull kubernetes/pause
Using default tag: latest
latest: Pulling from kubernetes/pause
4f4fb700ef54: Pull complete
b9c8ec465f6b: Pull complete
Digest: sha256:b31bfb4d0213f254d361e0079deaaebefa4f82ba7aa76ef82e90b4935ad5b105
Status: Downloaded newer image for kubernetes/pause:latest
docker.io/kubernetes/pause:latest
[root@hdss7-200 ~]# docker images
REPOSITORY                      TAG                        IMAGE ID            CREATED             SIZE
goharbor/chartmuseum-photon     v0.9.0-v1.8.3              ec654bcf3624        6 months ago        131MB
goharbor/harbor-migrator        v1.8.3                     6f945bb96ea3        6 months ago        362MB
goharbor/redis-photon           v1.8.3                     cda8fa1932ec        6 months ago        109MB
goharbor/clair-photon           v2.0.8-v1.8.3              5630fa937f6d        6 months ago        165MB
goharbor/notary-server-photon   v0.6.1-v1.8.3              e0a54affd0c8        6 months ago        136MB
goharbor/notary-signer-photon   v0.6.1-v1.8.3              72708cdfb905        6 months ago        133MB
goharbor/harbor-registryctl     v1.8.3                     9dc783842a19        6 months ago        97.2MB
goharbor/registry-photon        v2.7.1-patch-2819-v1.8.3   a05e085842f5        6 months ago        82.3MB
goharbor/nginx-photon           v1.8.3                     3a016e0dc7de        6 months ago        37MB
goharbor/harbor-log             v1.8.3                     b92621c47043        6 months ago        82.6MB
goharbor/harbor-jobservice      v1.8.3                     53bc2359083f        6 months ago        120MB
goharbor/harbor-core            v1.8.3                     a3ccc3897bc0        6 months ago        136MB
goharbor/harbor-portal          v1.8.3                     514f2fb70e90        6 months ago        43.9MB
goharbor/harbor-db              v1.8.3                     d1b8adbed58f        6 months ago        147MB
goharbor/prepare                v1.8.3                     a37e777b7fe7        6 months ago        147MB
nginx                           1.7.9                      84581e99d807        5 years ago         91.7MB
harbor.od.com/public/nginx      v1.7.9                     84581e99d807        5 years ago         91.7MB
kubernetes/pause                latest                     f9d5de079539        5 years ago         240kB
[root@hdss7-200 ~]# docker tag f9d5de079539 harbor.od.com/public/pause:latest
[root@hdss7-200 ~]# docker push harbor.od.com/public/pause:latest
The push refers to repository [harbor.od.com/public/pause]
5f70bf18a086: Mounted from public/nginx
e16a89738269: Pushed
latest: digest: sha256:b31bfb4d0213f254d361e0079deaaebefa4f82ba7aa76ef82e90b4935ad5b105 size: 938

21和22 上面建立kubelet啓動腳本：

[root@hdss7-21 bin]# cat kubelet.sh
#!/bin/sh
./kubelet \
  --anonymous-auth=false \
  --cgroup-driver systemd \
  --cluster-dns 192.168.0.2 \
  --cluster-domain cluster.local \
  --runtime-cgroups=/systemd/system.slice \
  --kubelet-cgroups=/systemd/system.slice \
  --fail-swap-on="false" \
  --client-ca-file ./cert/ca.pem \
  --tls-cert-file ./cert/kubelet.pem \
  --tls-private-key-file ./cert/kubelet-key.pem \
  --hostname-override hdss7-21.host.com \
  --image-gc-high-threshold 20 \
  --image-gc-low-threshold 10 \
  --kubeconfig ./conf/kubelet.kubeconfig \
  --log-dir /data/logs/kubernetes/kube-kubelet \
  --pod-infra-container-image harbor.od.com/public/pause:latest \
  --root-dir /data/kubelet
chmod +x kubelet.sh
mkdir -p /data/logs/kubernetes/kube-kubelet /data/kubelet

[root@hdss7-22 ~]# kubectl get nodes
NAME                STATUS   ROLES    AGE     VERSION
hdss7-21.host.com   Ready    <none>   3m15s   v1.15.2
hdss7-22.host.com   Ready    <none>   3m20s   v1.15.2

[root@hdss7-21 conf]# kubectl config set-cluster myk8s \
>   --certificate-authority=/opt/kubernetes/server/bin/cert/ca.pem \
>   --embed-certs=true \
>   --server=https://10.4.7.11:7443 \
>   --kubeconfig=kube-proxy.kubeconfig
Cluster "myk8s" set.
[root@hdss7-21 conf]# 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
User "kube-proxy" set.
[root@hdss7-21 conf]# ll
總用量 24
-rw-r--r-- 1 root root 2223 3月  25 23:36 audit.yaml
-rw-r--r-- 1 root root  258 3月  26 21:58 k8s-node.yaml
-rw------- 1 root root 6187 3月  26 21:57 kubelet.kubeconfig
-rw------- 1 root root 6126 3月  26 23:14 kube-proxy.kubeconfig
[root@hdss7-21 conf]#
[root@hdss7-21 conf]#
[root@hdss7-21 conf]# kubectl config set-context myk8s-context \
>   --cluster=myk8s \
>   --user=kube-proxy \
>   --kubeconfig=kube-proxy.kubeconfig
Context "myk8s-context" created.
[root@hdss7-21 conf]# kubectl config use-context myk8s-context --kubeconfig=kube-proxy.kubeconfig
Switched to context "myk8s-context".

加載ipvs模塊：

[root@hdss7-22 ~]# cat 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 "^[^.]*")

/sbin/modinfo -F filename $i &>/dev/null

if [ $? -eq 0 ];then

/sbin/modprobe $i

done

[root@hdss7-21 ~]# lsmod |grep ip_vs

[root@hdss7-21 ~]# chmod +x ipvs.sh

[root@hdss7-21 ~]# ./ipvs.sh

[root@hdss7-21 ~]# lsmod |grep ip_vs

ip_vs_wrr 12697 0

ip_vs_wlc 12519 0

ip_vs_sh 12688 0

ip_vs_sed 12519 0

ip_vs_rr 12600 0

ip_vs_pe_sip 12740 0

nf_conntrack_sip 33860 1 ip_vs_pe_sip

ip_vs_nq 12516 0

ip_vs_lc 12516 0

ip_vs_lblcr 12922 0

ip_vs_lblc 12819 0

ip_vs_ftp 13079 0

ip_vs_dh 12688 0

ip_vs 145497 24 ip_vs_dh,ip_vs_lc,ip_vs_nq,ip_vs_rr,ip_vs_sh,ip_vs_ftp,ip_vs_sed,ip_vs_wlc,ip_vs_wrr,ip_vs_pe_sip,ip_vs_lblcr,ip_vs_lblc

nf_nat 26583 3 ip_vs_ftp,nf_nat_ipv4,nf_nat_masquerade_ipv4

nf_conntrack 137239 8 ip_vs,nf_nat,nf_nat_ipv4,xt_conntrack,nf_nat_masquerade_ipv4,nf_conntrack_netlink,nf_conntrack_sip,nf_conntrack_ipv4

libcrc32c 12644 4 xfs,ip_vs,nf_nat,nf_conntrack

[root@hdss7-22 bin]# cat kube-proxy.sh

#!/bin/sh

./kube-proxy \

--cluster-cidr 172.7.0.0/16 \

--hostname-override hdss7-22.host.com \

--proxy-mode=ipvs \

--ipvs-scheduler=nq \

--kubeconfig ./conf/kube-proxy.kubeconfig

chmod +x kube-proxy.sh

mkdir -p /data/logs/kubernetes/kube-proxy

[root@hdss7-22 bin]# cat /etc/supervisord.d/kube-proxy.ini

[program:kube-proxy-7-22]

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)

[root@hdss7-22 supervisord.d]# supervisorctl update

kube-proxy-7-22: added process group

[root@hdss7-21 kube-proxy]# kubectl get svc

NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE

kubernetes ClusterIP 192.168.0.1 <none> 443/TCP 24h

[root@hdss7-21 ~]# kubectl label node  hdss7-22.host.com node-role.kubernetes.io/node=
node/hdss7-22.host.com labeled
[root@hdss7-21 ~]# kubectl label node  hdss7-22.host.com node-role.kubernetes.io/master=
node/hdss7-22.host.com labeled
[root@hdss7-21 ~]# kubectl get node
NAME                STATUS   ROLES         AGE   VERSION
hdss7-21.host.com   Ready    master,node   21h   v1.15.2
hdss7-22.host.com   Ready    master,node   21h   v1.15.2

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