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# (行前準備) Elastic Observability 實作體驗營 @ DevOpsDays Taipei 2022 :::info **本頁面網址:** https://hackmd.io/@estraining/DevOpsDaysTaipei2022 **講者:** [喬叔 (Joe Wu)](https://training.onedoggo.com/about-me) **Facebook 粉絲頁:** [喬叔 - Elastic Stack 技術交流](https://www.facebook.com/Joe.ElasticStack/) ::: :::warning 這份文件,已於 2023.09 將版本從 8.4.1 更新至 8.9.0。 ::: ## 行前準備 ### 操作電腦需求 - 最少 **16GB** 以上的 RAM - 最少 30GB 以上的 Disk Space - MacOS, Linux, Windows 皆可,但請不要用太舊的作業系統 :::danger :exclamation:請注意,由於這次工作坊執行的 docker containers 數量眾多,記憶體的要求較高,如果記憶體不到 16GB 的話幾乎很難順利運作,若是要開雲端主機的話,可以參考 - [如果要使用雲端主機,可以設定-SSH-Tunnel-來存取](#如果要使用雲端主機,可以設定-SSH-Tunnel-來存取) 的設定方式。 ::: ### 準備執行環境 請先在電腦中安裝以下所需的執行環境: - Docker - Docker Compose ([安裝說明](https://docs.docker.com/compose/install/)) - Python3 ([安裝說明](https://github.com/elastic/apm-integration-testing#python-3)) - Git (會簡單的 `git clone`, `git pull`, `git checkout` 即可。) ### 準備好 Docker Images 這次的工作坊,使用的是 Elastic 在 GitHub 所提供的 [apm-integration-testing](https://github.com/elastic/apm-integration-testing) 開源專案。 因為在操作時會需要 build Docker image 以及下載一些 Elastic Stack 的 Docker images,為了避免工作坊的時間被佔用在處理 build & download,建議請大家先完成以下的步驟。 :::danger :exclamation:請注意,喬叔有特別為了這次工作坊進行一些準備,所以請直接到喬叔 fork 出來的 GitHub 專案進行下載 [https://github.com/joecwu/apm-integration-testing/](https://github.com/joecwu/apm-integration-testing/),不要下載到 Elastic 官方版的哦! ::: 1. 取得 apm-integration-testing 的檔案。 可使用 `git clone` 的指令,或是直接[下載 Zip 壓縮檔](https://github.com/joecwu/apm-integration-testing/archive/refs/heads/main.zip)。 ``` git clone https://github.com/joecwu/apm-integration-testing.git ``` 2. 準備好 Docker Images 有以下兩種選擇,自行 build 或是直接抓喬叔準備好的 docker images. 2-1. **自行 build:** 在專案的根路徑下,執行以下 `compose.py build` 的指令,以建立及下載所需要使用到的 Docker images: Mac or Linux: ``` ./scripts/compose.py build --release --with-opbeans-java --with-opbeans-ruby --with-opbeans-python --with-opbeans-go --with-opbeans-node --with-opbeans-rum --with-filebeat --with-metricbeat --with-heartbeat 8.9.0 ``` Windows: ``` python .\scripts\compose.py build --release --with-opbeans-java --with-opbeans-ruby --with-opbeans-python --with-opbeans-go --with-opbeans-node --with-opbeans-rum --with-filebeat --with-metricbeat --with-heartbeat 8.9.0 ``` 2-2. **直接使用喬叔 build 好的 docker image** **Mac M1**: ``` docker-compose -f ./docker-compose-arm64.yml pull ``` :::warning 有一些 opbeans 的 docker base image,是使用 AMD64 所建置,所以使用 Mac M1 或 M2,請開啟 Rosetta 以正常模擬 AMD64 的執行環境來運行這些 Containers。 ::: **Linux**: ``` docker-compose -f ./docker-compose-linux.yml pull ``` :::danger Linux 版本還保持在 8.4.1 ,若要使用 8.9.0 請自行 build。 ::: **Windows**: ``` docker-compose -f ./docker-compose-windows.yml pull ``` :::danger Window 版本還保持在 8.4.1 ,若要使用 8.9.0 請自行 build。 ::: **其他平台** :::danger 其他平台需自行 build,否則 `opbeans-go` 和 `opbeans-rum` 會無法成功執行。 ::: 3. 確認 Docker Images 已被成功建置及下載。 使用 `docker images` 指令,確認有存在下列 Docker Images. ![](https://i.imgur.com/wSSnE7D.png) 4. 多確認是否能正常運作 Docker Cotainers 使用自行 build,請用:`docker-compose up -d` 若是使用另外的 yml 檔,請指定 `-f` 參數:`docker-compose -f ./docker-compose-linux.yml up -d` 請確認 containers 都能正常運作 (狀態為 `healthy`),若有問題,可先參考 [FAQ](#FAQ) ### 嘗試執行,確認系統資源能足夠啟動這些 Containers ``` docker-compose up -d ``` 並使用 `docker ps` 確認 containers 都有正常的運作: ![](https://hackmd.io/_uploads/rki4rPpA2.png) 可以透過 http://localhost:5601 存取 Kibana,確認 Elastic Stack 服務有正常啟動。 > 登入帳密為 `admin` 與 `changeme` :::info 若遇到任何問題,歡迎透過 FB 粉絲頁 [喬叔 - Elastic Stack 技術交流](https://www.facebook.com/Joe.ElasticStack/) 與我聯繫。 ::: ## FAQ ### 執行 `composer.py` 時 Docker build 出現 `GPG error` docker 出現 GPG error: At least one invalid signature was encountered 相關問題及解決辦法。 > There are a few reasons why you encounter these errors: > > There might be an issue with the existing cache and/or disc space. In order to fix it you need to clear the APT cache by executing: sudo apt-get clean and sudo apt-get update. > > The same goes with existing docker images. Execute: docker image prune -f and docker container prune -f in order to remove unused data and free disc space. > > If you don’t care about the security risks, you can try to run the apt-get command with the --allow-unauthenticated or --allow-insecure-repositories flag. According to the docs: > > Ignore if packages can’t be authenticated and don’t prompt about it. This can be useful while working with local repositories, but is a huge security risk if data authenticity isn’t ensured in another way by the user itself. > > Finally, on MacOS, where Docker runs inside a dedicated VM, you may need to increase the disk available to Docker from the Docker Desktop application (Settings -> Resources -> Advanced -> Disk image size). :::danger 執行以下指令會將你的 Docker 環境清空,包含 images, dangling build caches, containers,請確認後再操作。 ::: ``` docker container prune docker image prune -a docker system prune docker system df ``` ### 啟動時,容器異常中止 查看 docker-compose logs `{container_name}` 時,發現以下的錯誤: ``` exec /usr/bin/dumb-init: exec format error ``` 這代表該 Docker Image 不是用對應的 platform 所建置,需自行 build imgae 才能使用。 ### 啟動時,發生 `unhealthy` 的錯誤 ``` ERROR: for opbeans-node Container "907fc7a0c9be" is unhealthy. ERROR: for opbeans-load-generator Container "24e4d86c54ed" is unhealthy. ERROR: Encountered errors while bringing up the project. Traceback (most recent call last): File "/Users/joecwu/projects/joecwu/apm-integration-testing/./scripts/compose.py", line 31, in <module> main() File "/Users/joecwu/projects/joecwu/apm-integration-testing/./scripts/compose.py", line 17, in main setup() File "/Users/joecwu/projects/joecwu/apm-integration-testing/scripts/modules/cli.py", line 213, in __call__ self.args.func() File "/Users/joecwu/projects/joecwu/apm-integration-testing/scripts/modules/cli.py", line 590, in start_handler self.build_start_handler("start") File "/Users/joecwu/projects/joecwu/apm-integration-testing/scripts/modules/cli.py", line 782, in build_start_handler self.run_docker_compose_process(docker_compose_cmd + up_params) File "/Users/joecwu/projects/joecwu/apm-integration-testing/scripts/modules/cli.py", line 476, in run_docker_compose_process subprocess.check_call(docker_compose_cmd) File "/Users/joecwu/.pyenv/versions/3.9.2/lib/python3.9/subprocess.py", line 373, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['docker-compose', '-f', '/Users/joecwu/projects/joecwu/apm-integration-testing/docker-compose.yml', 'up', '-d']' returned non-zero exit status 1. ``` 有可能是當下某一些有相依性的 service 還沒有正常的啟動,可以先重新使用 `docker-compose` 啟動一次試試,看看是否有改善。 ``` docker-compose up -d ``` 若是依然有服務沒辦法正常啟動,可使用 `docker ps -a` 查看沒有正常啟動的服務是哪些,並進一步使用 `docker logs {{DockerContainerName}}` 查看錯誤訊息。 ### `opbeans-dotnet` 在 Apple M1 無法啟動 使用 `docker logs localtesting_8.9.0_opbeans-dotnet` 查看,發現以下錯誤: ``` Failed to resolve full path of the current executable [/proc/self/exe] ``` :::warning 在這次 Workshop 中,若是使用 Apple M1,我們先不啟用 `opbeans-dotnet` ::: ### 如果已經啟動過,但想要清空環境,重新再來 先清除所有正在運作中的 containers,以下方式二擇一: 1. 使用 `composer.py` ``` ./scripts/compose.py stop ``` 2. 使用 `docker-compose` ``` docker-compose down ``` 如果有需要,可以一併刪除已產生的 docker volume. ``` docker volume rm apm-integration-testing_esdata docker volume rm apm-integration-testing_pgdata ``` ### 如果要使用雲端主機,可以設定 SSH Tunnel 來存取 `~/.ssh/config` 的參考設定如下: ``` Host gcptunnel HostName <my.gcp.host.ip> IdentityFile ~/.ssh/google_compute_engine <--- yours may differ User jamie <--- yours probably differs Compression yes ExitOnForwardFailure no LocalForward 3000 127.0.0.1:3000 LocalForward 3001 127.0.0.1:3001 LocalForward 3002 127.0.0.1:3002 LocalForward 3003 127.0.0.1:3003 LocalForward 3004 127.0.0.1:80 LocalForward 5601 127.0.0.1:5601 LocalForward 8000 127.0.0.1:8000 LocalForward 9200 127.0.0.1:9200 LocalForward 9222 127.0.0.1:9222 ``` 以上述的例子,設定完成後,執行 `ssh gcptunnel` 即可將本機的 port 轉接到雲端主機。

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