背景
在国产化环境(KylinOS V10 SP2 + Kunpeng 920)部署 GreptimeDB 0.17.2 时,遇到了 jemalloc 内存分配错误:
greptime | <jemalloc>: Unsupported system page size
greptime | <jemalloc>: Unsupported system page size
greptime | <jemalloc>: Unsupported system page size
greptime | memory allocation of 16 bytes failed
这个问题本质上是 ARM64 架构下内存页大小与默认 jemalloc 配置不匹配导致的。解决方案是从源码重新编译 Greptime DB 并构建适配的 Docker 镜像。
环境准备
1. Rust 环境配置
首先需要配置 Rust 工具链,使用国内镜像加速:
shell
echo 'export RUSTUP_UPDATE_ROOT=https://mirrors.aliyun.com/rustup/rustup' >> ~/.bashrc
echo 'export RUSTUP_DIST_SERVER=https://mirrors.aliyun.com/rustup' >> ~/.bashrc
source ~/.bashrc
# 安装 rust
curl --proto '=https' --tlsv1.2 -sSf https://mirrors.aliyun.com/repo/rust/rustup-init.sh | sh
source ~/.cargo/env
配置 Cargo 镜像源(~/.cargo/config.toml):
toml
[source.crates-io]
replace-with = 'aliyun'
[source.aliyun]
registry = "sparse+https://mirrors.aliyun.com/crates.io-index/"
[net]
git-fetch-with-cli = true
[target.aarch64-unknown-linux-gnu]
linker = "clang"
2. 交叉编译工具链
shell
# 临时切换为默认源,解决 loongarch64 下载问题
export RUSTUP_DIST_SERVER='https://static.rust-lang.org'
export RUSTUP_UPDATE_ROOT='https://static.rust-lang.org/rustup'
rustup toolchain install stable
rustup install nightly-2025-05-19
source ~/.bashrc
rustup target add aarch64-unknown-linux-gnu
cargo install cross
docker pull ghcr.io/cross-rs/aarch64-unknown-linux-gnu:main
编译 GreptimeDB
关键步骤是设置正确的 jemalloc 页大小参数:
shell
export JEMALLOC_SYS_WITH_LG_PAGE=16
cross build --release -F dashboard --target=aarch64-unknown-linux-gnu
前一步骤完成之后,会生成cross-custom-greptimedb:aarch64-unknown-linux-gnu-3e5a9-pre-build镜像,后续的编译在这个镜像中完成。
如果编译过程有中断,可以使用以下命令继续编译。
shell
/usr/bin/docker run --userns host \
-e JEMALLOC_SYS_WITH_LG_PAGE \
-e 'PKG_CONFIG_ALLOW_CROSS=1' \
-e 'XARGO_HOME=/xargo' \
-e 'CARGO_HOME=/cargo' \
-e 'CARGO_TARGET_DIR=/target' \
-e 'CROSS_RUNNER=' \
-e TERM \
-e 'USER=root' \
-e 'GITHUB_PROXY_URL=https://gh-proxy.org/https://github.com/' \
-e 'CARGO_BUILD_JOBS=2' \
-e 'CARGO_INCREMENTAL=0' \
--rm --user 0:0 \
-v /root/.xargo:/xargo:z \
-v /root/.cargo:/cargo:z \
-v /cargo/bin \
-v /mnt/d/code/rust/greptimedb:/project:z \
-v /root/.rustup/toolchains/nightly-2025-05-19-x86_64-unknown-linux-gnu:/rust:z,ro \
-v /mnt/d/code/rust/greptimedb/target:/target:z \
-w /project -i -t \
cross-custom-greptimedb:aarch64-unknown-linux-gnu-3e5a9-pre-build \
sh -c 'PATH=$PATH:/rust/bin cargo build --release -F dashboard --target=aarch64-unknown-linux-gnu'
构建 Docker 镜像
创建 Dockerfile:
dockerfile
FROM ubuntu:22.04
RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get \
-y install ca-certificates curl && \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
ADD greptime-0.17.2-linux-aarch64.tar.gz /
WORKDIR /greptime
ENV PATH /greptime/bin/:$PATH
ENV MALLOC_CONF="prof:true,prof_active:false"
ENTRYPOINT ["greptime"]
构建镜像:
shell
docker build -t greptimedb:0.17.2-arm64 .
总结
在国产 ARM64 环境下部署 GreptimeDB 需要特别注意内存分配器的配置。通过从源码编译并设置正确的 jemalloc 参数,可以成功构建适配的 Docker 镜像。