Raspberry Pi 安装 Docker技术
Docker 在树莓派 arm64 的安装!Docker 安装命令,无需 sudo。
curl -sSL https://get.docker.com | sh
curl -sSL https://get.docker.com | sh # Executing docker install script, commit: 93d2499759296ac1f9c510605fef85052a2c32be + sudo -E sh -c apt-get update -qq >/dev/null + sudo -E sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq apt-transport-https ca-certificates curl >/dev/null + sudo -E sh -c curl -fsSL "https://download.docker.com/linux/debian/gpg" | gpg --dearmor --yes -o /usr/share/keyrings/docker-archive-keyring.gpg gpg: 警告:家目录‘/home/pi/.gnupg’的所有权不安全 + sudo -E sh -c echo "deb [arch=arm64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/debian buster stable" > /etc/apt/sources.list.d/docker.list + sudo -E sh -c apt-get update -qq >/dev/null + sudo -E sh -c DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends docker-ce-cli docker-ce >/dev/null E: Sub-process /usr/bin/dpkg returned an error code (1) pi@raspberrypi:~/bak $ pi@raspberrypi:~/bak $ docker Usage: docker [OPTIONS] COMMAND A self-sufficient runtime for containers Options: --config string Location of client config files (default "/home/pi/.docker") -c, --context string Name of the context to use to connect to the daemon (overrides DOCKER_HOST env var and default context set with "docker context use") -D, --debug Enable debug mode -H, --host list Daemon socket(s) to connect to -l, --log-level string Set the logging level ("debug"|"info"|"warn"|"error"|"fatal") (default "info") --tls Use TLS; implied by --tlsverify --tlscacert string Trust certs signed only by this CA (default "/home/pi/.docker/ca.pem") --tlscert string Path to TLS certificate file (default "/home/pi/.docker/cert.pem") --tlskey string Path to TLS key file (default "/home/pi/.docker/key.pem") --tlsverify Use TLS and verify the remote -v, --version Print version information and quit Management Commands: app* Docker App (Docker Inc., v0.9.1-beta3) builder Manage builds buildx* Build with BuildKit (Docker Inc., v0.6.1-docker) config Manage Docker configs container Manage containers context Manage contexts image Manage images manifest Manage Docker image manifests and manifest lists network Manage networks node Manage Swarm nodes plugin Manage plugins secret Manage Docker secrets service Manage services stack Manage Docker stacks swarm Manage Swarm system Manage Docker trust Manage trust on Docker images volume Manage volumes Commands: attach Attach local standard input, output, and error streams to a running container build Build an image from a Dockerfile commit Create a new image from a container's changes cp Copy files/folders between a container and the local filesystem create Create a new container diff Inspect changes to files or directories on a container's filesystem events Get real time events from the server exec Run a command in a running container export Export a container's filesystem as a tar archive history Show the history of an image images List images import Import the contents from a tarball to create a filesystem image info Display system-wide information inspect Return low-level information on Docker objects kill Kill one or more running containers load Load an image from a tar archive or STDIN login Log in to a Docker registry logout Log out from a Docker registry logs Fetch the logs of a container pause Pause all processes within one or more containers port List port mappings or a specific mapping for the container ps List containers pull Pull an image or a repository from a registry push Push an image or a repository to a registry rename Rename a container restart Restart one or more containers rm Remove one or more containers rmi Remove one or more images run Run a command in a new container save Save one or more images to a tar archive (streamed to STDOUT by default) search Search the Docker Hub for images start Start one or more stopped containers stats Display a live stream of container(s) resource usage statistics stop Stop one or more running containers tag Create a tag TARGET_IMAGE that refers to SOURCE_IMAGE top Display the running processes of a container unpause Unpause all processes within one or more containers update Update configuration of one or more containers version Show the Docker version information wait Block until one or more containers stop, then print their exit codes Run 'docker COMMAND --help' for more information on a command. To get more help with docker, check out our guides at https://docs.docker.com/go/guides/
kafka 的一些命令技术
启动 Zookeeper
bin/zookeeper-server-start.sh config/zookeeper.properties
启动 kafka
bin/kafka-server-start.sh config/server.properties
查看消费组
bin/kafka-consumer-groups.sh --list --bootstrap-server localhost:9092
消费 from beginning
bin/kafka-console-consumer.sh --topic quickstart-events --from-beginning --bootstrap-server localhost:9092
Golang 报错记录技术
golang 学习记录,代码记录,报错记录
使用 gin net/http 创建一个 web 服务
_ := http.ListenAndServe(":9090", nil) // 不需要冒号 ./gin1.go:14:4: no new variables on left side of :=
package main import ( "fmt" "net/http" ) func sayHello (w http.ResponseWriter, r *http.Request) { _, _ = fmt.Fprintln(w, "Hello") } func main () { http.HandleFunc("/hello", sayHello) _ = http.ListenAndServe(":9090", nil) }
为什么程序员越老越不值钱院内
大家都清楚,老师也好,医生也好,都是资历越深越吃香,而世上有一个行业—程序员,是资历越深越不容易找工作,越不吃香?
在国内,确实是这样啊,老程序员工资要的高,人家不要你啊;新手体力好,认知浅,好管理,好忽悠,为什么招你呢?
很多人都说三十五岁是一个坎,其实不是说三十岁之后的人能力不行,在我看来,三十五之后的人能力太强了,公司驾驭不了,一般不欢迎这样的人。这样的人要么自己创业,要么另寻出路,总之,打工不是一个明智的路啊!
国外的人,可能单纯很多,三十多岁很受欢迎,国外很多天才程序员,写了代码赚了钱给了女人和酒精,他们就是好这个,单纯着呢!
Golang 学习笔记技术
golang 学习笔记,语法特点,快速入门,一小时入门。
花括号 { 不可以单独一行
不需要加分号
import 合并写法
import "fmt" import { "fmt" "time" }
变量声明
// 1 var a int // 默认为 0 // 2 var b int = 1 // 3 var c = 1 // 4 只能使用在函数内 d := 1 // 打印类型 fmt.Printf("%T\n", d) // 5 声明多个 var a, b int = 1, 2 var x, y = 1, "a" var ( a int = 1 b bool = true )