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SQLAlchemy: What's the difference between flush() and commit()? https://pyquestions.com/sqlalchemy-what-s-the-difference-between-flush-and-commit A Se 阅读全文
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A - Full Moon https://atcoder.jp/contests/abc318/tasks/abc318_a Problem Statement Takahashi likes full moons. Let today be day 1. The first day on or 阅读全文
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Linux time command https://linuxize.com/post/linux-time-command/ 粗略分析整个程序的耗时情况。 time wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.9.ta 阅读全文
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gdb https://sourceware.org/gdb/ What is GDB? GDB, the GNU Project debugger, allows you to see what is going on `inside' another program while it execu 阅读全文
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Using JobDSL and Jenkinsfiles to fully automate Jenkins job management 非常贴切的一个比喻 JobDSL 做Job管理的框架， 负责Job基本参数配置 Pipeline 做Job逻辑内容的容器，决定Job执行逻辑。 By usin 阅读全文
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概念 https://zhuanlan.zhihu.com/p/92920381 树状数组（Binary Indexed Tree, 又Fenwick Tree）其实并不是一棵树，只是对数组各元素进行逻辑上的划分。根据维基百科，树状数组是一种用于高效计算数列前缀和的数据结构，它可以以O(logn)的 阅读全文
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openldap https://github.com/osixia/docker-openldap/tree/master Run OpenLDAP docker image: docker run --name my-openldap-container --detach osixia/open 阅读全文
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Environment variables precedence https://docs.docker.com/compose/environment-variables/envvars-precedence/ The order of precedence (highest to lowest) 阅读全文
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Is Docker-Compose Suited For Production? https://vsupalov.com/docker-compose-production/ Hidden Assumptions Production means different things to diffe 阅读全文
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Running Docker Containers as Non-Root User https://www.geeksforgeeks.org/running-docker-containers-as-non-root-user/ By default, Docker Containers run 阅读全文
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SIGHUP https://www.gnu.org/software/libc/manual/html_node/Termination-Signals.html hang up容易让人联想到进程挂起， 实际上这个挂起，是终端挂起。 Macro: int SIGHUP The SIGHUP (“h 阅读全文
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prometheus https://prometheus.io/ 为云监控而生 From metrics to insightPower your metrics and alerting with the leadingopen-source monitoring solution. Prome 阅读全文
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LDAP federation 官网 https://www.keycloak.org/docs/latest/server_admin/#_ldap Keycloak includes an LDAP/AD provider. You can federate multiple different 阅读全文
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prometheus https://prometheus.io/ From metrics to insight Power your metrics and alerting with the leadingopen-source monitoring solution. 架构 https:// 阅读全文
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systemd https://systemd.io/ System and Service Manager systemd is a suite of basic building blocks for a Linux system. It provides a system and servic 阅读全文
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OpenStack https://docs.openstack.org/install-guide/get-started-with-openstack.html The OpenStack project is an open source cloud computing platform fo 阅读全文
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RBAC和ABAC https://www.jianshu.com/p/107c50720a6f 面向目标机器的资源。 什么是RBAC？ RBAC.png 比如当用户登录某财务管理系统的时候，允许哪些用户访问编辑哪些菜单，允许访问编辑哪些商品资源等，决定这些权限都取决于用户是哪个角色。 在RBAC， 阅读全文
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An Introduction to Kaniko https://www.baeldung.com/ops/kaniko Kaniko is a tool to build container images from a Dockerfile. Unlike Docker, Kaniko does 阅读全文
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An Introduction to Linux Automation, Tools and Techniques https://linuxconfig.org/an-introduction-to-linux-automation-tools-and-techniques In the fast 阅读全文
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journald / rsyslog / syslog https://linuxconfig.org/advanced-logging-and-auditing-on-linux journald 最流行。 journald is now ubiquitous across Linux syste 阅读全文
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What is SELinux? https://www.redhat.com/en/topics/linux/what-is-selinux#overview Overview Security-Enhanced Linux (SELinux) is a security architecture 阅读全文
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概念 https://www.ruanyifeng.com/blog/2019/10/tmux.html SSH 登录后，使用tmux可以保留回话，即使关闭终端。 同一个回话可以被多个终端共享，分享屏幕， 主机开启一个tmux，远程机器SSH登录主机，使用tmux attach此回话。 命令行的典型 阅读全文
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How to enable auto restart of a docker container on system reboot ? https://amalgjose.com/2021/02/12/how-to-enable-auto-restart-of-a-docker-container- 阅读全文
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Linux command line basics: sudo https://www.redhat.com/sysadmin/sudo What is sudo? Sudo stands for "superuser do" and is the master key to your high-p 阅读全文
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logrotate command in Linux with examples https://linuxconfig.org/logrotate In Linux, many applications and system services will store log files. These 阅读全文
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目的 对于使用docker compose启动的容器， 我们可以使用命令诊断其启动的目录。 方法 song@song-VirtualBox:~$ docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES6d4e4431d09d go 阅读全文
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Differences between SysVinit, Upstart and Systemd https://www.computernetworkingnotes.com/linux-tutorials/differences-between-sysvinit-upstart-and-sys 阅读全文
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What is /Dev/Null in Linux? https://www.geeksforgeeks.org/what-is-dev-null-in-linux/ 所有物理设备对应的文件，放在dev目录下。 What is /dev? In the Linux file system, eve 阅读全文
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itertools.groupby https://docs.python.org/3/library/itertools.html#itertools.groupby 此工具需要注意， 连续分组和输入顺序。 Make an iterator that returns consecutive key 阅读全文
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How to Clear Logs of Running Docker Containers https://www.howtogeek.com/devops/how-to-clear-logs-of-running-docker-containers/ Understanding the Prob 阅读全文
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Using Jenkins CI/CD for your NodeJS app https://blog.harveydelaney.com/jenkins-build-test-deploy-node-app/ Jenkinsfile https://github.com/internetarch 阅读全文
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引子 https://github.com/fanqingsong/fastapi-react-postgres-keycloak-sso docker compose 配置文件定义了若干service version: "3" services: nginx: image: nginx:1.17 阅读全文
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Assign permission to user through role and group https://www.keycloak.org/docs/latest/server_admin/#assigning-permissions-using-roles-and-groups Code: 阅读全文
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fastapi-react-postgres-keycloak-sso https://github.com/fanqingsong/fastapi-react-postgres-keycloak-sso version: "3" services: nginx: image: nginx:1.17 阅读全文
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fastapi-keycloak-angular-sso https://github.com/fanqingsong/fastapi-keycloak-angular-sso Keycloak likes to speak SSL, so this sandbox application uses 阅读全文
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dockerfile from as https://juejin.cn/s/dockerfile%20from%20as Demo https://github.com/andreaskring/fastapi-keycloak-angular 分离构建镜像和运行镜像 FROM node:curr 阅读全文
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Keycloak: Requesting Token with Password Grant https://www.appsdeveloperblog.com/keycloak-requesting-token-with-password-grant/ In this tutorial, you 阅读全文
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Keycloak: Authorization Code Grant Example https://www.appsdeveloperblog.com/keycloak-authorization-code-grant-example/ 适合web应用 In this tutorial, you 阅读全文
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jwt https://jwt.io/ JSON Web Tokens are an open, industry standard RFC 7519 method for representing claims securely between two parties. JWT.IO allows 阅读全文
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How to mount a shared folder in VirtualBox https://www.pragmaticlinux.com/2021/02/how-to-mount-a-shared-folder-in-virtualbox/ Background VirtualBox co 阅读全文