请确认是否可以在PowerVS的Linux（CentOS）上安装Sysdig Agent
在确认是否可以使用IBM Cloud Monitoring with Sysdig来监视PowerVS (Power Systems Virtual Server)时，我们验证了是否可以在PowerVS的Linux(CentOS)上安装Sysdig agent。
[参考] 部署监控代理
Sysdig Agent 安装的要求：
https://docs.sysdig.com/zh/host-requirements-for-agent-installation.html
关于Sysdig的要求，CentOS和RHEL都是支持的操作系统，但没有提及AIX和SUSE。
这次我们将确认CentOS。
环境
IBM云电力系统虚拟服务器
硬件：S922
操作系统：CentOS 8
确认
请确认主机名
[root@test-centos ~]# hostname
test-centos
确认操作系统
[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 ~]#
确认yum软件源
[root@test-centos ~]# yum repolist
repo id repo name
appstream CentOS Linux 8 - AppStream
baseos CentOS Linux 8 - BaseOS
extras CentOS Linux 8 - Extras
・核心确认
[root@test-centos ~]# uname -r
4.18.0-240.10.1.el8_3.ppc64le
在導入 Sysdig 代理程式之前，先確保已經安裝了 RPM 。
[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 ~]#
-> 据说没有对应的rpm存在…
进行「kernel-devel*」的yum搜索时，可以找到kernel-devel.ppc64le。
[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
不指定版本，安装 kernel-devel.ppc64le。
[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 ~]#
我成功地引入了！
确认
[root@test-centos ~]# rpm -qa | grep kernel-devel
kernel-devel-4.18.0-305.10.2.el8_4.ppc64le
[root@test-centos ~]#
我已经成功安装了前提 rpm。
接下来，我们将检查是否可以安装Sysdig agent。
情况1. 使用 Sysdig agent 进行部署和安装（使用安装脚本）。
[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.
如果没有支持的操作系统，可能可以尝试手动安装。
在安装脚本（https://ibm.biz/install-sysdig-agent）中，由于架构确认中缺少ppc64le选项，因此会被归类为不支持的架构。
ARCH=$(uname -m)
if [[ ! $ARCH = *86 ]] && [ ! $ARCH = "x86_64" ] && [ ! $ARCH = "s390x" ]; then
unsupported
fi
情况2. Sysdig agent的部署和执行（手动安装）
我会尝试手动安装。
代理程序安装：手动 Linux 安装：CentOS、RHEL、Fedora、Amazon AMI、Amazon Linux 2。
导入「draios」的yum存储库
[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」存储库已添加。
[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
找不到
我尝试搜索epel-release*。
[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
厄杂邪库正在阻碍搜索功能。
尝试禁用 draios 仓库 (enabled=0)，并寻找 epel*。
[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]#
找到了「epel-next-release.noarch」和「epel-release.noarch」。
选择安装「epel-release.noarch」。
[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]#
-> 已添加了 epel 和 epel-modular。
[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
推测不存在的是位于baseurl中的 $basearch，其中 $basearch 为ppc64le。
我会尝试指定$basearch进行确认。
如果是x86_64的情况下
[root@test-centos yum.repos.d]# vi draios.repo
[draios]
name=Draios
#baseurl=https://download.sysdig.com/stable/rpm/$basearch
baseurl=https://download.sysdig.com/stable/rpm/x86_64
enabled=1
gpgcheck=1
gpgkey=https://download.sysdig.com/DRAIOS-GPG-KEY.public
#repo_gpgcheck=1
[root@test-centos yum.repos.d]# yum search draios-agent
Draios 102 kB/s | 291 kB 00:02
Last metadata expiration check: 0:00:01 ago on Wed 28 Jul 2021 01:43:30 AM UTC.
=============================================== Name Exactly Matched: draios-agent ===============================================
draios-agent.x86_64 : Sysdig Agent
=================================================== Name Matched: draios-agent ===================================================
draios-agent-kmodule.x86_64 : Sysdig Agent
draios-agent-slim.x86_64 : Sysdig Agent
draios-agentino.x86_64 : Sysdig Agent
draios-agentone.x86_64 : Sysdig Agent
x86_64 架构下的 draios-agent 存在着。
如果是ppc64le版本的情况下
[root@test-centos yum.repos.d]# vi draios.repo
[draios]
name=Draios
#baseurl=https://download.sysdig.com/stable/rpm/$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
找不到。
如果是无架构的情况
[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
找不到。
结果 (jié guǒ)
我将检查一下，以确定是否可以在 PowerVS 的 ppc64le 上安装 Sysdig agent，因为目前还没有适用于该平台的模块。
以上就是。
