Docker 的一些命令技术
Docker 的一些常用命令！
-i 交互，-t 终端
pi@raspberrypi:~ $ sudo docker run -i -t ubuntu /bin/bash root@593b84502134:/# pwd / root@593b84502134:/# df -h Filesystem Size Used Avail Use% Mounted on overlay 117G 58G 55G 52% / tmpfs 64M 0 64M 0% /dev tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup shm 64M 0 64M 0% /dev/shm /dev/root 117G 58G 55G 52% /etc/hosts tmpfs 3.9G 0 3.9G 0% /proc/asound tmpfs 3.9G 0 3.9G 0% /sys/firmware root@593b84502134:/# ls / bin boot dev etc home lib media mnt opt proc root run sbin srv sys tmp usr var root@593b84502134:/# du -sh /* 0 /bin 4.0K /boot 0 /dev 628K /etc 4.0K /home 0 /lib 4.0K /media 4.0K /mnt 4.0K /opt du: cannot access '/proc/11/task/11/fd/3': No such file or directory du: cannot access '/proc/11/task/11/fdinfo/3': No such file or directory du: cannot access '/proc/11/fd/3': No such file or directory du: cannot access '/proc/11/fdinfo/3': No such file or directory 0 /proc 12K /root 20K /run 0 /sbin 4.0K /srv 0 /sys 4.0K /tmp 66M /usr 4.5M /var
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)
}
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
)