当RTC in local TZ配置为yes时，意味着 RTC 芯片记录的时间是本地时区时间，而非 UTC 时间。这就意味着当前硬件时间，已经包含了时区，RTC时间等于本地时间，UTC时间需要加上时区重新计算。
当RTC in local TZ配置为no时，意味着 RTC 芯片记录的时间是 UTC 时间。这就意味着RTC时间等于UTC时间，当前本地时间计算时，需要在TRC时间上再加上时区，得到系统时间。
示例，RTC in local TZ = yes：
当前配置下系统给出了一些告警提示信息。
示例，RTC in local TZ = no：
RTC in local TZ = yes可能带来的问题
在上述的命令输出中，给出了一段告警信息
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Warning: The system is configured to read the RTC time in the local time zone. This mode cannot be fully supported. It will create various problems with time zone changes and daylight saving time adjustments. The RTC time is never updated, it relies on external facilities to maintain it. If at all possible, use RTC in UTC by calling 'timedatectl set-local-rtc 0'.
# For more information on configuration, see: # * Official English Documentation: http://nginx.org/en/docs/ # * Official Russian Documentation: http://nginx.org/ru/docs/
user nginx; worker_processes auto; error_log /var/log/nginx/error.log; pid /run/nginx.pid;
# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic. include /usr/share/nginx/modules/*.conf;
include /etc/nginx/mime.types; default_type application/octet-stream;
# Load modular configuration files from the /etc/nginx/conf.d directory. # See http://nginx.org/en/docs/ngx_core_module.html#include # for more information. include /etc/nginx/conf.d/*.conf;
// 提交form-data格式 // https://developer.mozilla.org/zh-CN/docs/Web/HTTP/Basics_of_HTTP/MIME_types#multipartform-data // Content-Type: multipart/form-data; boundary=aBoundaryString // (other headers associated with the multipart document as a whole)
<!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> html { color-scheme: light dark; } body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } </style> </head> <body> <h1>Welcome to nginx!</h1> <p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p>
<p>For online documentation and support please refer to <a href="http://nginx.org/">nginx.org</a>.<br/> Commercial support is available at <a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p> </body> </html>
# 即可在容器 ng2 中，直接通过容器名连通容器 ng1 docker exec -it ng2 curl http://ng1 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> html { color-scheme: light dark; } body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } </style> </head> <body> <h1>Welcome to nginx!</h1> <p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p>
<p>For online documentation and support please refer to <a href="http://nginx.org/">nginx.org</a>.<br/> Commercial support is available at <a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p> </body> </html>
# 直接在 my-ng1 容器中，使用容器名称，请求 my-ng2 容器 [root@VM-16-13-centos ~]# docker exec -it my-ng1 curl http://my-ng2 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> html { color-scheme: light dark; } body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } </style> </head> <body> <h1>Welcome to nginx!</h1> <p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p>
<p>For online documentation and support please refer to <a href="http://nginx.org/">nginx.org</a>.<br/> Commercial support is available at <a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p> </body> </html>
# 直接在 my-ng2 容器中，使用容器名称，请求 my-ng1 容器 [root@VM-16-13-centos ~]# docker exec -it my-ng2 curl http://my-ng1 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> html { color-scheme: light dark; } body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } </style> </head> <body> <h1>Welcome to nginx!</h1> <p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p>
<p>For online documentation and support please refer to <a href="http://nginx.org/">nginx.org</a>.<br/> Commercial support is available at <a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p> </body> </html> [root@VM-16-13-centos ~]#
# 测试，直接在网络 docker0 中的 ng1 内连接网络 my-network 下的 my-ng1 [root@VM-16-13-centos ~]# docker exec -it ng1 curl http://my-ng1 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> html { color-scheme: light dark; } body { width: 35em; margin: 0 auto; font-family: Tahoma, Verdana, Arial, sans-serif; } </style> </head> <body> <h1>Welcome to nginx!</h1> <p>If you see this page, the nginx web server is successfully installed and working. Further configuration is required.</p>
<p>For online documentation and support please refer to <a href="http://nginx.org/">nginx.org</a>.<br/> Commercial support is available at <a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p> </body> </html>
Client: Docker Engine - Community Version: 20.10.17 API version: 1.41 Go version: go1.17.11 Git commit: 100c701 Built: Mon Jun 6 23:03:11 2022 OS/Arch: linux/amd64 Context: default Experimental: true
Server: Docker Engine - Community Engine: Version: 20.10.17 API version: 1.41 (minimum version 1.12) Go version: go1.17.11 Git commit: a89b842 Built: Mon Jun 6 23:01:29 2022 OS/Arch: linux/amd64 Experimental: false containerd: Version: 1.6.6 GitCommit: 10c12954828e7c7c9b6e0ea9b0c02b01407d3ae1 runc: Version: 1.1.2 GitCommit: v1.1.2-0-ga916309 docker-init: Version: 0.19.0 GitCommit: de40ad0 # 7. 使用hello-world测试docker是否按照成功 sudo docker run hello-world
Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world 2db29710123e: Pull complete Digest: sha256:13e367d31ae85359f42d637adf6da428f76d75dc9afeb3c21faea0d976f5c651 Status: Downloaded newer image for hello-world:latest
Hello from Docker! This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" image from the Docker Hub. (amd64) 3. The Docker daemon created a new container from that image which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal.
To try something more ambitious, you can run an Ubuntu container with: $ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID: https://hub.docker.com/
For more examples and ideas, visit: https://docs.docker.com/get-started/
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# 查看docker下载的所有镜像 docker images
REPOSITORY TAG IMAGE ID CREATED SIZE hello-world latest feb5d9fea6a5 9 months ago 13.3kB
# 所有所有镜像 docker search mysql NAMEDESCRIPTION STARS OFFICIAL AUTOMATED mysqlMySQL is a widely used, open-source relation… 12851 [OK] mariadbMariaDB Server is a high performing open sou… 4926 [OK]
NAME DESCRIPTION STARS OFFICIAL AUTOMATED mysql MySQL is a widely used, open-source relation… 12851 [OK] mariadb MariaDB Server is a high performing open sou… 4926 [OK]
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 113ffb59a550 nginx "/docker-entrypoint.…" 6 minutes ago Up 6 minutes 0.0.0.0:8080->80/tcp nginx-01
# 查看本地容器，一共有c1 c2两个容器 [root@VM-16-13-centos ~]# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES cfe02ba04ad7 centos "/bin/sh" 5 minutes ago Up 5 minutes c2 f7d563151f92 centos "/bin/sh" 6 minutes ago Up 6 minutes c1
FROM centos RUN sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* RUN sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-* RUN yum clear RUN yum makecache RUN yum -y install wget RUN echo '---------------------over--------------------'
# 运行时不指定默认命令，将执行 ls -a docker run -it my-centos . .dockerenv dev home lib64 media opt root sbin sys usr .. bin etc lib lost+found mnt proc run srv tmp var
# 运行,默认命令 docker run -it --name ec1 entrypoint-centos . .dockerenv dev home lib64 media opt root sbin sys usr .. bin etc lib lost+found mnt proc run srv tmp var
FROM centos RUN echo 'This is a test image' ENTRYPOINT ls -a
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# 运行,默认命令 docker run -it --name ec1 entrypoint-centos . .dockerenv dev home lib64 media opt root sbin sys usr .. bin etc lib lost+found mnt proc run srv tmp var
# 运行,使用默认命令,追加参数 docker run -it --name ec2 entrypoint-centos -l . .dockerenv dev home lib64 media opt root sbin sys usr .. bin etc lib lost+found mnt proc run srv tmp var
