Linux OpenEuler 环境下 Milvus 在线与离线安装卸载及连接异常处理

安装了 3 个依赖，让 yum 缓存下来，离线安装时可以使用，yum 开启缓存及查找缓存文件地址：

# 修改配置文件 vim /etc/yum.conf
# 修改内容
[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=1

安装成功后启动服务：

systemctl start milvus-etcd
systemctl start milvus-minio
systemctl start milvus

查看服务状态：

# systemctl status milvus-etcd
● milvus-etcd.service - Etcd of Milvus Standalone Server
Loaded: loaded (/etc/systemd/system/milvus-etcd.service; disabled; vendor preset: disabled)
Active: active (running) since Thu 2024-06-13 09:09:54 CST; 19s ago
Main PID: 18846(milvus-etcd)
CGroup: /system.slice/milvus-etcd.service └─18846 /usr/bin/milvus-etcd --data-dir /var/lib/milvus/etcd-data

# systemctl status milvus-minio
● milvus-minio.service - MinIO of Milvus Standalone Server
Loaded: loaded (/etc/systemd/system/milvus-minio.service; disabled; vendor preset: disabled)
Active: active (running) since Thu 2024-06-13 09:10:05 CST; 1min 3s ago
Main PID: 18961(milvus-minio)
CGroup: /system.slice/milvus-minio.service └─18961 /usr/bin/milvus-minio server /var/lib/milvus/minio-data

# systemctl status milvus
● milvus.service - Milvus Standalone Server
Loaded: loaded (/etc/systemd/system/milvus.service; disabled; vendor preset: disabled)
Active: active (running) since Thu 2024-06-13 09:10:12 CST; 1s ago
Main PID: 19058(milvus-server)
CGroup: /system.slice/milvus.service └─19058 /usr/bin/milvus-server run standalone

# milvus 安装的文件
[root@tcloud ~]# rpm -ql milvus
/etc/ld.so.conf.d/milvus.conf
/etc/milvus/configs/advanced/etcd.yaml
/etc/milvus/configs/milvus.yaml
/etc/systemd/system/milvus-etcd.service
/etc/systemd/system/milvus-minio.service
/etc/systemd/system/milvus.service
/lib64/milvus/libgfortran.so.4
/lib64/milvus/libknowhere.so
/lib64/milvus/libmarisa.a
/lib64/milvus/libmarisa.la
/lib64/milvus/libmarisa.so
/lib64/milvus/libmarisa.so.0
/lib64/milvus/libmilvus_common.so
/lib64/milvus/libmilvus_index.so
/lib64/milvus/libmilvus_indexbuilder.so
/lib64/milvus/libmilvus_segcore.so
/lib64/milvus/libopenblas.so.0
/usr/bin/milvus
/usr/bin/milvus-etcd
/usr/bin/milvus-minio
/usr/bin/milvus-server

缓存的依赖包是 oe 的：

• libquadmath-10.3.1-28.oe2203sp1.x86_64.rpm
• tbb-2020.3-5.oe2203sp1.x86_64.rpm
• tbb-devel-2020.3-5.oe2203sp1.x86_64.rpm

2. 离线安装

离线安装要使用在线安装缓存的依赖文件：

# 安装
rpm -ivh libquadmath-10.3.1-28.oe2203sp1.x86_64.rpm
rpm -ivh tbb-2020.3-5.oe2203sp1.x86_64.rpm
rpm -ivh tbb-devel-2020.3-5.oe2203sp1.x86_64.rpm
rpm -ivh milvus-2.1.4-1.el7.x86_64.rpm

# 启动
systemctl start milvus-etcd
systemctl start milvus-minio
systemctl start milvus

3. 连接异常

3.1 Attu 和 milvus_cli 都无法连接

使用 Attu 连接时报错：Milvus is not ready yet.

使用 milvus_cli 连接时报错信息如下：

[root@tcloud milvus]# milvus_cli
__ __ _ _ ____ _ ___
|\/ (_)|_ ___ _ ___ / ___|||_ _|||\// || / __|||||||||||||\ V /||_|\__ \||___||___ |||_||_|_|_|_\/, \__,_|___/ \____|_____|___|
Learn more: https://github.com/zilliztech/milvus_cli.
milvus_cli > connect
numpy.dtype size changed, may indicate binary incompatibility. Expected 96 from C header, got 88 from PyObject

Milvus 官方推荐使用 NumPy ≤1.23.5（尤其对 Milvus ≤2.3.0），查看 NumPy 的版本：

# 查询 numpy 版本
[root@tcloud milvus]# pip list | grep numpy
numpy 2.0.2

# 先卸载现有 NumPy
pip uninstall -y numpy
# 安装兼容版本（选择其一）
# 稳定版
pip install numpy==1.23.5
# 部分新版本可用
pip install numpy==1.24.3

重新安装 NumPy 后无需重启服务即可进行连接：

milvus_cli > connect
Connect Milvus successfully.
+-------+-----------+
| Host  |127.0.0.1 |
| Port  |19530     |
| Alias | default   |
+-------+-----------+

3.2 仅 Attu 无法连接

测试了多种方法发现 Attu 的版本可能跟所安装的 Milvus 版本不匹配，使用 JavaSDK 可以连接并写入数据查询数据。

4. 卸载

# 查询安装对象
rpm -qa |grep milvus
# 卸载
rpm -e --nodeps milvus-2.1.4-1.el7.x86_64