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docker imageとCPUアーキテクチャ

ラズパイにOpenSearchを立てるため、docker-compose up -d すると...

The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested

ラズパイをdatadogで監視する

ラズパイにdatadogのagentを入れる

参考: https://qiita.com/kangaechu/items/06c159dd9ea1efece6fd

アカウント作成

ラズパイにdatadog agentをインストールする

https://us5.datadoghq.com/account/settings#agent

api keyを選択し、ワンステップ インストールを実行

DD_API_KEY={API_KEY} DD_HOME=/opt/datadog-agent DD_SITE="us5.datadoghq.com" bash -c "$(curl -L https://s3.amazonaws.com/dd-agent/scripts/install_script_agent7.sh)"

ラズパイでdocker-composeが使えない

docker-composeコマンドを実行するとエラーが発生。

$ docker-compose up -d
ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?

If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.

microk8sを試す

ラズパイに入れてみる

boot設定を変更する

$ sudo vi /boot/firmware/nobtcmd.txt

cgroup_enable=memory cgroup_memory=1

$ sudo reboot now

インストール

$ sudo snap install microk8s --classic --channel=1.26

permission設定

$ sudo usermod -a -G microk8s $USER

$ newgrp microk8s

状態確認

$ microk8s.status

エイリアス設定

$ sudo snap alias microk8s.kubectl kubectl

コマンド実行確認

$ kubectl get node
NAME     STATUS   ROLES    AGE   VERSION
ubuntu   Ready    <none>   11m   v1.26.0

ここまでで構築完了。

ラズパイにGolangをインストール

ダウンロード。

wget  https://go.dev/dl/go1.20.4.linux-arm64.tar.gz

すでにあったら削除(ないけど)

rm -rf /usr/local/go

ファイル展開。

sudo tar -C /usr/local -xzf go1.20.4.linux-arm64.tar.gz
sudo vi /home/username/.profile

以下を追記。

export PATH=$PATH:/usr/local/go/bin
$ go version
go version go1.20.4 linux/arm64

redmineのダークモードを探す

ラズパイにRedmineを立ててプラグインを追加できるようにし、いい感じのダークモードプラグインを見つけたい。

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