
Adds Support for Nested Workflows
/etc/systemd/system/docker.service.d/https-proxy.conf
[Service]
Environment="http_proxy=http://127.0.0.1:8123" "https_proxy=https://127.0.0.1:8123" "NO_PROXY=registry-1.docker.io"
sudo systemctl daemon-reload
sudo systemctl restart docker
/etc/default/docker
export http_proxy="http://127.0.0.1:3128/"
/etc/docker/daemon
~/.docker/config.json
"proxies":{
"default":{}
}
软件接口 OPC
应用层 ModBus
数据链路层 CAN,ProfiBus
物理层 RS232,RS485
OPC SERVER = OPC驱动器
简单来说,OPC是一套标准,其目的是把PLC特定的协议(如Modbus,Profibus等)抽象成为标准化的接口,作为“中间人”的角色把通用的OPC“读写”请求转换成具体的设备协议来与HMI/SCADA系统直接对接
When the standard was first released in 1996, its purpose was to abstract PLC specific protocols (such as Modbus, Profibus, etc.) into a standardized interface allowing HMI/SCADA systems to interface with a “middle-man” who would convert generic-OPC read/write requests into device-specific requests and vice-versa.

下载B2 TLS安全证书
openssl s_client -showcerts -connect api.backblazeb2.com:443 > b2.crt
mv b2.crt .minio/certs/CAs/
set MINIO_ACCESS_KEY=B2_keyID
set MINIO_SECRET_KEY=B2_applicationKey
minio gateway b2
之前一直用pycharm,今天把code升级到1.3.2的时候, 突然提示我安装python扩展,决定试试。 结果发现python的解释器设置有问题, 总是设置为系统的解释器, 而虚拟环境的解释器不起作用。
apt remove --purge python3.5
reboot
结果ubuntu桌面启动不了。好多应用程序例如chrome,virtualbox都消失了, 造成了很大的麻烦。
Ctrl+Alt+F1进入虚拟控制台登录
apt install python3.5
apt install ubuntu-desktop
重新安装chrome和virtualbox
cd /etc/apt/sources.list.d
sudo mv google-chrome.list.save google-chrome.list
apt update
apt install google-chrome-stable