PowerVS (Power Systems Virtual Server) の監視は IBM Cloud Monitoring with Sysdig で対応できるのだろうかという確認で、PowerVS の Linux(CentOS) に Sysdig agent が導入できるか確認しました。
[参考] モニタリング・エージェントのデプロイ
Sysdig Agent install の Requirement：
https://docs.sysdig.com/en/host-requirements-for-agent-installation.html
Sysdig のRequirement では Supported OS に CentOS、RHEL はありますが。AIX、SUSE は記載がありません。
今回は、CentOS 確認します。
環境
IBM Cloud Power Systems Virtual Server
HW: S922
OS: CentOS 8
確認
・ホスト名確認
[root@test-centos ~]# hostname
test-centos
・OS確認
[root@test-centos ~]# cat /etc/os-release
NAME="CentOS Linux"
VERSION="8"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Linux 8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-8"
CENTOS_MANTISBT_PROJECT_VERSION="8"
[root@test-centos ~]#
・yum repository を確認
[root@test-centos ~]# yum repolist
repo id repo name
appstream CentOS Linux 8 - AppStream
baseos CentOS Linux 8 - BaseOS
extras CentOS Linux 8 - Extras
・ kernel 確認
[root@test-centos ~]# uname -r
4.18.0-240.10.1.el8_3.ppc64le
Sysdig agent 導入前提 rpm の導入
[root@test-centos ~]# yum -y install kernel-devel-$(uname -r)
CentOS Linux 8 - AppStream 3.9 kB/s | 4.3 kB 00:01
CentOS Linux 8 - AppStream 2.4 MB/s | 7.2 MB 00:03
CentOS Linux 8 - BaseOS 2.0 kB/s | 3.9 kB 00:01
CentOS Linux 8 - BaseOS 868 kB/s | 3.8 MB 00:04
CentOS Linux 8 - Extras 1.2 kB/s | 1.5 kB 00:01
CentOS Linux 8 - Extras 6.4 kB/s | 9.8 kB 00:01
No match for argument: kernel-devel-4.18.0-240.10.1.el8_3.ppc64le
Error: Unable to find a match: kernel-devel-4.18.0-240.10.1.el8_3.ppc64le
[root@test-centos ~]#
-> 対応するrpm は存在しないとのこと...
「kernel-devel*」 でyum search を実施するとkernel-devel.ppc64le は存在しています。
[root@test-centos ~]# yum search kernel-devel*
Last metadata expiration check: 0:02:35 ago on Tue 27 Jul 2021 02:10:46 AM UTC.
================================================== Name Matched: kernel-devel* ===================================================
kernel-devel.ppc64le : Development package for building kernel modules to match the kernel
バージョン指定せず、kernel-devel.ppc64le を導入します。
[root@test-centos ~]# yum -y install kernel-devel.ppc64le
Last metadata expiration check: 0:02:56 ago on Tue 27 Jul 2021 02:10:46 AM UTC.
Dependencies resolved.
==================================================================================================================================
Package Architecture Version Repository Size
==================================================================================================================================
Installing:
kernel-devel ppc64le 4.18.0-305.10.2.el8_4 baseos 18 M
Transaction Summary
==================================================================================================================================
Install 1 Package
Total download size: 18 M
Installed size: 48 M
Downloading Packages:
kernel-devel-4.18.0-305.10.2.el8_4.ppc64le.rpm 2.3 MB/s | 18 MB 00:07
----------------------------------------------------------------------------------------------------------------------------------
Total 2.2 MB/s | 18 MB 00:08
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : kernel-devel-4.18.0-305.10.2.el8_4.ppc64le 1/1
Running scriptlet: kernel-devel-4.18.0-305.10.2.el8_4.ppc64le 1/1
Verifying : kernel-devel-4.18.0-305.10.2.el8_4.ppc64le 1/1
Installed:
kernel-devel-4.18.0-305.10.2.el8_4.ppc64le
Complete!
[root@test-centos ~]#
導入できました!
確認
[root@test-centos ~]# rpm -qa | grep kernel-devel
kernel-devel-4.18.0-305.10.2.el8_4.ppc64le
[root@test-centos ~]#
これで前提 rpm は導入できました。
続いて、Sysdig agent が導入できるかどうかを確認します。
Case 1. Sysdig agent 導入実行(インストールスクリプト使用)
[root@test-centos ~]# curl -sL https://ibm.biz/install-sysdig-agent | sudo bash -s -- --access_key MONITORING_ACCESS_KEY --collector COLLECTOR_ENDPOINT --collector_port 6443 --secure true --tags TAG_DATA --additional_conf 'sysdig_capture_enabled: false'
* Detecting operating system
Unsupported operating system. Please consider contacting support@sysdigcloud.com or trying the manual installation.
サポートがないOSとのこと。
manual installation を試したらできるのかもしれません。
-> インストールスクリプト( https://ibm.biz/install-sysdig-agent ) ではアーキテクチャー確認の分岐にppc64le がないため、unsupported へ分類されます。
ARCH=$(uname -m)
if [[ ! $ARCH = *86 ]] && [ ! $ARCH = "x86_64" ] && [ ! $ARCH = "s390x" ]; then
unsupported
fi
Case 2. Sysdig agent 導入実行 (マニュアル・インストール)
手動での導入を試します。
Agent Install: Manual Linux Installation : CentOS, RHEL, Fedora, Amazon AMI, Amazon Linux 2
・yum repository 「draios」の導入
[root@test-centos ~]# rpm --import https://download.sysdig.com/DRAIOS-GPG-KEY.public
[root@test-centos ~]# echo $?
0
[root@test-centos ~]# curl -s -o /etc/yum.repos.d/draios.repo http://download.sysdig.com/stable/rpm/draios.repo
[root@test-centos ~]# echo $?
0
[root@test-centos ~]# yum repolist
repo id repo name
appstream CentOS Linux 8 - AppStream
baseos CentOS Linux 8 - BaseOS
draios Draios
extras CentOS Linux 8 - Extras
-> 「draios」 リポジトリが追加されました。
[root@test-centos ~]# rpm -i http://mirror.us.leaseweb.net/epel/6/i386/epel-release-6-8.noarch.rpm
curl: (22) The requested URL returned error: 404 Not Found
error: skipping http://mirror.us.leaseweb.net/epel/6/i386/epel-release-6-8.noarch.rpm - transfer failed
-> Not found
epel-release* を検索してみます。
[root@test-centos ~]# yum search epel-release*
Draios 158 B/s | 309 B 00:01
Errors during downloading metadata for repository 'draios':
- Status code: 404 for https://download.sysdig.com/stable/rpm/ppc64le/repodata/repomd.xml (IP: 216.137.37.33)
Error: Failed to download metadata for repo 'draios': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
-> draios リポジトリが邪魔をして、検索できていないようです。
draios リポジトリーを使用不可にし (enabled=0) epel* を探してみます。
[root@test-centos yum.repos.d]# yum repolist
repo id repo name
appstream CentOS Linux 8 - AppStream
baseos CentOS Linux 8 - BaseOS
extras CentOS Linux 8 - Extras
[root@test-centos yum.repos.d]# yum search epel*
Last metadata expiration check: 0:12:29 ago on Wed 28 Jul 2021 01:19:48 AM UTC.
====================================================== Name Matched: epel* =======================================================
epel-next-release.noarch : Extra Packages for Enterprise Linux Next repository configuration
epel-release.noarch : Extra Packages for Enterprise Linux repository configuration
[root@test-centos yum.repos.d]#
「epel-next-release.noarch」、「epel-release.noarch」 が見つかりました。
「epel-release.noarch」を導入します。
[root@test-centos yum.repos.d]# yum install epel-release.noarch
Last metadata expiration check: 0:14:25 ago on Wed 28 Jul 2021 01:19:48 AM UTC.
Dependencies resolved.
==================================================================================================================================
Package Architecture Version Repository Size
==================================================================================================================================
Installing:
epel-release noarch 8-11.el8 extras 24 k
Transaction Summary
==================================================================================================================================
Install 1 Package
Total download size: 24 k
Installed size: 35 k
Is this ok [y/N]: y
Downloading Packages:
epel-release-8-11.el8.noarch.rpm 32 kB/s | 24 kB 00:00
----------------------------------------------------------------------------------------------------------------------------------
Total 17 kB/s | 24 kB 00:01
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : epel-release-8-11.el8.noarch 1/1
Running scriptlet: epel-release-8-11.el8.noarch 1/1
Verifying : epel-release-8-11.el8.noarch 1/1
Installed:
epel-release-8-11.el8.noarch
Complete!
[root@test-centos yum.repos.d]#
[root@test-centos yum.repos.d]# yum repolist
repo id repo name
appstream CentOS Linux 8 - AppStream
baseos CentOS Linux 8 - BaseOS
epel Extra Packages for Enterprise Linux 8 - ppc64le
epel-modular Extra Packages for Enterprise Linux Modular 8 - ppc64le
extras CentOS Linux 8 - Extras
[root@test-centos yum.repos.d]#
-> epel、epel-modular が追加されました。
[root@test-centos yum.repos.d]# vi draios.repo
[draios]
name=Draios
baseurl=https://download.sysdig.com/stable/rpm/$basearch
enabled=1
gpgcheck=1
gpgkey=https://download.sysdig.com/DRAIOS-GPG-KEY.public
# repo_gpgcheck=1
[root@test-centos yum.repos.d]# yum search draios-agent
Draios 156 B/s | 309 B 00:01
Errors during downloading metadata for repository 'draios':
- Status code: 404 for https://download.sysdig.com/stable/rpm/ppc64le/repodata/repomd.xml (IP: 216.137.37.19)
Error: Failed to download metadata for repo 'draios': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
-> baseurlにある $basearch が ppc64le となり、存在していないと推測されます。
・$basearch を指定して確認してみます。
①x86_64 の場合
[root@test-centos yum.repos.d]# vi draios.repo
[draios]
name=Draios
# baseurl=https://download.sysdig.com/stable/rpm/$basearch
baseurl=https://download.sysdig.com/stable/rpm/x86_64
enabled=1
gpgcheck=1
gpgkey=https://download.sysdig.com/DRAIOS-GPG-KEY.public
# repo_gpgcheck=1
[root@test-centos yum.repos.d]# yum search draios-agent
Draios 102 kB/s | 291 kB 00:02
Last metadata expiration check: 0:00:01 ago on Wed 28 Jul 2021 01:43:30 AM UTC.
=============================================== Name Exactly Matched: draios-agent ===============================================
draios-agent.x86_64 : Sysdig Agent
=================================================== Name Matched: draios-agent ===================================================
draios-agent-kmodule.x86_64 : Sysdig Agent
draios-agent-slim.x86_64 : Sysdig Agent
draios-agentino.x86_64 : Sysdig Agent
draios-agentone.x86_64 : Sysdig Agent
-> x86_64 の draios-agent は存在しています。
② ppc64le の場合
[root@test-centos yum.repos.d]# vi draios.repo
[draios]
name=Draios
# baseurl=https://download.sysdig.com/stable/rpm/$basearch
baseurl=https://download.sysdig.com/stable/rpm/ppc64le
enabled=1
gpgcheck=1
gpgkey=https://download.sysdig.com/DRAIOS-GPG-KEY.public
# repo_gpgcheck=1
[root@test-centos yum.repos.d]# yum search draios-agent
Draios 157 B/s | 309 B 00:01
Errors during downloading metadata for repository 'draios':
- Status code: 404 for https://download.sysdig.com/stable/rpm/ppc64le/repodata/repomd.xml (IP: 216.137.37.115)
Error: Failed to download metadata for repo 'draios': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
-> 見つかりません。
③ noarch の場合
[root@test-centos yum.repos.d]# vi draios.repo
[draios]
name=Draios
# baseurl=https://download.sysdig.com/stable/rpm/$basearch
baseurl=https://download.sysdig.com/stable/rpm/noarch
enabled=1
gpgcheck=1
gpgkey=https://download.sysdig.com/DRAIOS-GPG-KEY.public
# repo_gpgcheck=1
[root@test-centos yum.repos.d]# yum search draios-agent
Draios 160 B/s | 308 B 00:01
Errors during downloading metadata for repository 'draios':
- Status code: 404 for https://download.sysdig.com/stable/rpm/noarch/repodata/repomd.xml (IP: 216.137.37.115)
Error: Failed to download metadata for repo 'draios': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried
-> 見つかりません。
結果
Sysdig agent は PowerVS のLinux(CoreOS)のppc64leに対応するモジュールが存在しておらず導入ができませんでした。
今後導入可能になるかは、チェックしておきたいと思います。
以上です。