一、服务端

version: "3"

services:
  v2ray:
    image: v2ray/official
    container_name: v2ray
    restart: always
    command: v2ray -config=/etc/v2ray/config.json
    ports:
      - "8888:80"
    volumes:
      - ./data:/etc/v2ray
      - ./v2ray.config.json:/etc/v2ray/config.json:ro

{
	"log": {
		"access": "/var/log/v2ray/access.log",
		"error": "/var/log/v2ray/error.log",
		"loglevel": "warning"
	},
	"inbound": {
		"port": 80,
		"protocol": "vmess",
		"settings": {
			"clients": [{
				"id": "01947a19-d50f-40ad-a3e0-7d25081f82a7",
				"level": 1,
				"alterId": 100
			}]
		},
		"streamSettings": {
			"network": "tcp",
			"tcpSettings": {
				"header": {
					"request": {
						"path": [
							"/"
						],
						"version": "1.1",
						"method": "GET",
						"headers": {
							"Host": "www.baidu.com",
							"Connection": [
								"keep-alive"
							],
							"Accept-Encoding": [
								"gzip, deflate"
							],
							"Pragma": "no-cache",
							"User-Agent": [
								"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.75 Safari/537.36",
								"Mozilla/5.0 (iPhone; CPU iPhone OS 10_0_2 like Mac OS X) AppleWebKit/601.1 (KHTML, like Gecko) CriOS/53.0.2785.109 Mobile/14A456 Safari/601.1.46"
							]
						}
					},
					"type": "http",
					"response": {
						"status": "200",
						"headers": {
							"Transfer-Encoding": [
								"chunked"
							],
							"Connection": [
								"keep-alive"
							],
							"Content-Type": [
								"application/octet-stream",
								"video/mpeg"
							],
							"Pragma": "no-cache"
						},
						"reason": "OK",
						"version": "1.1"
					}
				},
				"connectionReuse": true
			}
		}
	},
	"outbound": {
		"protocol": "freedom",
		"settings": {}
	},
	"outboundDetour": [{
		"protocol": "blackhole",
		"settings": {},
		"tag": "blocked"
	}],
	"routing": {
		"strategy": "rules",
		"settings": {
			"rules": [{
				"type": "field",
				"ip": [
					"0.0.0.0/8",
					"10.0.0.0/8",
					"100.64.0.0/10",
					"127.0.0.0/8",
					"169.254.0.0/16",
					"172.16.0.0/12",
					"192.0.0.0/24",
					"192.0.2.0/24",
					"192.168.0.0/16",
					"198.18.0.0/15",
					"198.51.100.0/24",
					"203.0.113.0/24",
					"::1/128",
					"fc00::/7",
					"fe80::/10"
				],
				"outboundTag": "blocked"
			}]
		}
	}
}

客户端

因为墙的原因，无法下载国外文件，因此需要将某些下载域名转换成国内镜像域名。

参考：https://gitee.com/kxtry/kubespray-k8s-installation/tree/master
-----------------------------
#参照gcr.io替换所有域名
grep -rl 'gcr.io' ./|xargs sed -i "s/gcr.io/gcr.azk8s.cn/g"
grep -rl 'quay.io' ./|xargs sed -i "s/quay.io/quay.azk8s.cn/g"

docker.io -> dockerhub.azk8s.cn （其中官方镜像需要加library/）
quay.io ->  quay.azk8s.cn
gcr.io -> gcr.azk8s.cn
k8s.gcr.io -> gcr.azk8s.cn/google-containers
-----------------------------------------------
vim roles/container-engine/docker/defaults/main.yml修改以下内容。
docker_rh_repo_base_url: 'https://mirrors.aliyun.com/docker-ce/linux/centos/7/$basearch/stable'
docker_rh_repo_gpgkey: 'https://mirrors.aliyun.com/docker-ce/linux/centos/gpg'

# CentOS/RedHat Extras repo
extras_rh_repo_base_url: "https://mirrors.aliyun.com/centos/$releasever/extras/$basearch/"
extras_rh_repo_gpgkey: "https://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7"

ISTIO的版本支持情况。
公司支持的版本是K8S-1.15.7和ISTIO-1.6
https://istio.io/latest/docs/setup/platform-setup/

Istio 1.6 has been tested with these Kubernetes releases: 1.15,1.16, 1.17, 1.18

docker-compose如果不配置network属性，则会创建一个新的子网，而这个子网的网段极有可能与某个内网网段发生冲突。
所以最好在docker-compose.yml中增加network属性配置。
docker-compose启动服务的过程包括以下过程：
第一步创建子网网桥。可以通过”ip route”获取到相关子网IP。
第二步按服务依赖启动服务

{
"bip":"192.168.55.1/24"
}
networks:
  default:
    driver: bridge
    driver_opts:
      com.docker.network.enable_ipv6: "false"
    ipam:
      driver: default
      config:
        - subnet: 192.168.56.0/24

					

MQTT服务器非常多，如apache的ActiveMQ，emtqqd，HiveMQ，Emitter，Mosquitto，Moquette等等。

使用容器Mosquitto的MQTT实现。

mosquitto_sub -t ‘test/topic’ -c -i id -q 1
mosquitto_pub -t ‘test/topic’ -m ‘hello world23334’ -q 1

mosquitto_sub -t ‘test/topic’ -c -i id -q 1 -u abc -P 123
mosquitto_pub -t ‘test/topic’ -m ‘hello world23334’ -q 1 -u abc -P 123

1.获取当前所有的命名空间
kubectl get ns
2.遍历命名空间，检查非Running状态的容器如ImagePullBackOff/ContainerCreating等,如下。
kubectl get pods -n kube-system

 [root@k8smaster ~]# kubectl get pods -n kube-system
NAME                                       READY   STATUS              RESTARTS   AGE
calico-kube-controllers-5b8b769fcd-lsjt4   1/1     Running             2          6d3h
calico-node-6l6r4                          1/1     Running             2          6d2h
calico-node-gt95n                          1/1     Running             2          6d3h
coredns-546565776c-4bn2d                   1/1     Running             2          6d3h
coredns-546565776c-cwpk7                   1/1     Running             2          6d3h
etcd-k8smaster                             1/1     Running             2          6d3h
kube-apiserver-k8smaster                   1/1     Running             3          6d3h
kube-controller-manager-k8smaster          1/1     Running             2          6d3h
kube-proxy-7s8dw                           1/1     Running             2          6d2h
kube-proxy-cbgtv                           1/1     Running             2          6d3h
kube-scheduler-k8smaster                   1/1     Running             2          6d3h
kuboard-7bb89b4cc4-bk7d4                   0/1     ContainerCreating   0          15m
metrics-server-7f96bbcc66-qjk5b            0/1     ContainerCreating   0          15m
 

3.获取问题POD的输出内容。

kubectl describe pod kuboard-7bb89b4cc4-bk7d4 --namespace=kube-system