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[Splunk]Splunk Enterpriseの構築(dockerイメージの利用)

Last updated at Posted at 2020-10-08

[Splunk]Splunk Enterpriseの構築(dockerイメージの利用)

目的・背景

Splunkはdockerコンテナでも動作するようです。
コンテナイメージも配布されているようなので、これを利用しSplunkを稼働させてみます。

参考サイト

docker上で「 Splunk 」を動かす

splunk/splunk

docker、docker-composeのインストール

$ sudo apt update

$ sudo apt install -y docker.io
$ docker -v
Docker version 19.03.6, build 369ce74a3c

$ sudo apt install -y docker-compose
$ docker-compose -v
docker-compose version 1.17.1, build unknown

$ sudo groupadd docker
groupadd: group 'docker' already exists
※すでにdockerグループが存在していた

$ sudo gpasswd -a $USER docker
Adding user ubuntu to group docker

$ cat /etc/group | grep docker
docker:x:115:ubuntu

$ sudo reboot

$ docker ps

Splunkコンテナの取得

$ docker pull splunk/splunk
$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
splunk/splunk       latest              1d4750df3f5d        3 days ago          1.72GB

Splunkコンテナの作成と起動

$ docker run -d -e "SPLUNK_START_ARGS=--accept-license" -e "SPLUNK_USER=root" -e "SPLUNK_PASSWORD=xxxxxxxx" -p "8000:8000" --name splunk splunk/splunk
$ docker logs splunk -f
    :
PLAY RECAP *********************************************************************
localhost                  : ok=67   changed=8    unreachable=0    failed=0    skipped=65   rescued=0    ignored=0

Tuesday 08 September 2020  05:18:38 +0000 (0:00:00.394)       0:01:26.013 *****
===============================================================================
splunk_common : Update Splunk directory owner -------------------------- 48.08s
splunk_common : Start Splunk via CLI ------------------------------------ 9.35s
splunk_common : Update /opt/splunk/etc ---------------------------------- 2.97s
Gathering Facts --------------------------------------------------------- 2.72s
splunk_common : Get Splunk status --------------------------------------- 2.52s
splunk_common : Wait for splunkd management port ------------------------ 2.15s
splunk_common : Test basic https endpoint ------------------------------- 1.69s
splunk_common : Hash the password --------------------------------------- 1.29s
splunk_common : Trigger restart ----------------------------------------- 0.94s
splunk_common : Get Splunk status --------------------------------------- 0.92s
splunk_common : Generate user-seed.conf (Linux) ------------------------- 0.69s
splunk_common : Check for scloud ---------------------------------------- 0.48s
splunk_common : Find manifests ------------------------------------------ 0.45s
splunk_standalone : Setup global HEC ------------------------------------ 0.45s
splunk_standalone : Get existing HEC token ------------------------------ 0.45s
splunk_common : include_tasks ------------------------------------------- 0.45s
splunk_common : Cleanup Splunk runtime files ---------------------------- 0.42s
Check for required restarts --------------------------------------------- 0.39s
splunk_standalone : Check for required restarts ------------------------- 0.39s
splunk_common : Apply licenses ------------------------------------------ 0.33s
===============================================================================

Ansible playbook complete, will begin streaming splunkd_stderr.log

ここまで表示されたらCTRL+Cでログ参照を中止

ブラウザでhttp://xxx.xxx.xxx.xxx:8000/にアクセス

IDは「admin」、パスワードはコンテナ起動時に指定した「"SPLUNK_PASSWORD=xxxxxxxx"」の値を入力
ダッシュボードが表示されたら起動確認完了

splunkコマンドの実行方法

$ docker exec -it splunk /bin/bash

splunkのインストール先は「/opt/splunk」

$ cd /opt/splunk/bin
$ sudo ./splunk diag
    :
Copying Splunk log files...
Copying bucket info files...
Copying Splunk dispatch files...
Copying Splunk consensus files...
Adding manifest files...
Adding cachemanager_upload.json...
Cleaning up...
Splunk diagnosis file created: /opt/splunk/diag-5d58bc49d37c-2020-09-08_08-04-39.tar.gz

$ exit

コンテナの停止

$ docker stop splunk

コンテナの起動

$ docker start splunk
splunk

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                            PORTS                                                                           NAMES
5d58bc49d37c        splunk/splunk       "/sbin/entrypoint.sh…"   19 minutes ago      Up 3 seconds (health: starting)   8065/tcp, 8088-8089/tcp, 8191/tcp, 9887/tcp, 0.0.0.0:8000->8000/tcp, 9997/tcp   splunk

おわりに

公開されているコンテナイメージを使って起動するのは手動構築するのと同じぐらい簡単です!

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