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74 lines
2.0 KiB
Markdown
74 lines
2.0 KiB
Markdown
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# Run on CentOS 7
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> [!WARNING]
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> CentOS 7 and RHEL 6.5/7 do not support eBPF out of the box; in other words, you must build the kernel (>= 5.8) yourself and install it.
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## Introduction
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CentOS 7 is a veteran Linux distribution, although its life cycle is not long, but there should still be some people using it. This article documents the steps to run dae on CentOS 7 or RHEL 6.5.
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## Upgrade process
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### Updating the kernel
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Update the kernel that supports `BTF`
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```bash
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curl -s https://repo.cooluc.com/mailbox.repo > /etc/yum.repos.d/mailbox.repo
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yum makecache
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yum update kernel
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```
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> [!NOTE]
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> The kernel is based on Linux 6.1 LTS, rebuilt to support `BBRv2`, and enables `eBPF` support. It can also be compiled by yourself, and the source package is available at <https://repo.cooluc.com/kernel/7/SRPMS/>
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### Mount BPF
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```bash
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curl -s https://repo.cooluc.com/kernel/files/sys-fs-bpf.mount > /etc/systemd/system/sys-fs-bpf.mount
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systemctl enable sys-fs-bpf.mount
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```
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### Mount Control Group v2
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```bash
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curl -s https://repo.cooluc.com/kernel/mount-cgroup2.service > /etc/systemd/system/mount-cgroup2.service
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systemctl enable mount-cgroup2.service
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```
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### Reboot the system to make the kernel effective
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> [!NOTE]
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> Check the kernel version. If the version is `6.1.xx-1.el7.x86_64`, it means that the operation is successful.
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```bash
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uname -r
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```
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If the kernel version does not change, it means that the kernel has been updated before, and you need to rebuild the grub2 bootloader to make the new kernel the highest priority.
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To set the latest kernel as the default:
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```bash
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grub2-set-default 0
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```
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To rebuild the kernel bootloader configuration:
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```bash
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grub2-mkconfig -o /boot/grub2/grub.cfg
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```
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### Running dae
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Now you can download dae and run it as usual
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```bash
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mkdir -p /opt/dae && cd /opt/dae
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wget https://github.com/daeuniverse/dae/releases/download/v0.2.2/dae-linux-x86_64.zip
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unzip dae-linux-x86_64.zip && rm -f dae-linux-x86_64.zip
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cp example.dae config.dae
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chmod 600 config.dae
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DAE_LOCATION_ASSET=$(pwd) ./dae-linux-x86_64 run -c config.dae
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```
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