Preface As a cloud company, we usually build our container cluster on cloud platforms such as GCP or AWS. but sometimes we need to think about how to take to go solution to our customer. So, here comes a challenge - Scale-in our cloud platform and put into pocket (mmm I mean “minikube”) An example GKE service Here is a simple example which you (might) build in GKE. DB: MongoDB with stateful set binding with google persistent disk. Use stateful set from (“Running MongoDB on Kubernetes with StatefulSets”) as an example Web service(fooBar): a golang application which accesses mongo DB with the load balancer. Because fooBar is proprietary application which fooBar image store in GCR (Google Cloud Registry) not in docker hub. How to migrate your service from GKE to minikube: We will just list some note to let you know any tip or note you migrate your service to...
Why not Kafka 0.11 or 1.0 homebrew kafka version using 0.11 and could not launch on my computer, and it is hard to know detail why homebrew/kafka failed. (issue) Transactional Coordinator still not support by sarama golang client (golang) (issue) Install Kafka 0.8 manually in 2017/11 sudo su - cd /tmp wget https://archive.apache.org/dist/kafka/0.8.2.2/kafka_2.9.1-0.8.2.2.tgz tar -zxvf kafka_2.9.1-0.8.2.2.tgz -C /usr/local/ cd /usr/local/kafka_2.9.1-0.8.2.2 sbt update sbt package cd /usr/local ln -s kafka_2.9.1-0.8.2.2 kafka echo "" >> ~/.bash_profile echo "" >> ~/.bash_profile echo "# KAFKA" >> ~/.bash_profile echo "export KAFKA_HOME=/usr/local/kafka" >> ~/.bash_profile source ~/.bash_profile echo "export KAFKA=$KAFKA_HOME/bin" >> ~/.bash_profile echo "export KAFKA_CONFIG=$KAFKA_HOME/config" >> ~/.bash_profile source ~/.bash_profile $KAFKA/zookeeper-server-start.sh $KAFKA_CONFIG/zookeeper.properties $KAFKA/kafka-server-start.sh $KAFKA_CONFIG/server.properties How to verify your installation? (in your kafka path) Create topic > $KAFKA/bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test` Verify it > $KAFKA/in/kafka-topics.sh --list --zookeeper localhost:2181 test Or your can use golang client to verify it: Console consumer Console producer Troubleshooting...
spf13/cobra is a great package if you want to write your own console app. Even Kubernetes console use cobra to develop it console app. Create simple CLI app example. Let’s use kubectl as simple example it support. kubectl get nodes kubectl create -f ...RESOURCE kubectl delete -f ...RESOURCE Create sub-command using Cobra Take those command as an example, there are some sub-command as follow: get create delete Here is how we add that sub-command to your app. (ex: kctl) cobra init in your repo. It will create /cmd and main.go. cobra add get to add sub-command get now, you can try kctl get to get prompt from the console which you already call this sub-command. Repeatedly for create and delete. You will see related help in kctl --help. Add nested-command using Cobra Cobra could use console mode to add sub-command, but you need to add nested command manually. ex: we...
心得: 這篇文章是講解到關於 git rebase 的部分，講著就提到一些 git 技巧．也提到該如何把不小心 commit 的檔案從 git 記錄內徹底刪除的方法． Rebase Manually auto-rebase Before start to rebase: git fetch origin Pull latest code and start rebase: (ex: rebase to master) git rebase origin/master Start rebase git rebase --continue … modify code. git add your_changed_code Force push because tree different: git push -f -u origin HEAD -u: for upstream sort term. -f: force (because you rebase your code history) Interactive rebasing Rebase with interactive git rebase -i (interactive) origin/develop It will entry Select your change and make as squash, pick. Check all commits. git log stat Reset git reset HEAD~ (rollback last change) git log --stat --decorate Here is detail example how to rebase from evan/test1 to develop git checkout -t origin/evan/test1 git log --stat --decorate git fetch origin git rebase -i origin/develop vim .gitignore git add -v .gitignore git rebase --continue git status git submodule update git log --stat...
