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云原生开发部署实践笔记
一、开发测试环境搭建与测试
1.1 Linux运行环境的搭建与测试
虽然CentOS已经更新到Stream 9 版本，但基于大多数企业和单位多数使用CentOS 7版本作为运行底座，7版本也一直在更行维护，此实践基于CentOS 7 Mini版本搭建。（8和9版本的CentOS系统命令少有差别，但主要用到的其实都差不多，最大的差别在于系统内核与自带的软件组件和库比较新。如果企业开发部署对兼容性有要求，应选择其要求或匹配版本。）
1.1.1 CentOS 7 运行环境搭建与测试
下载安装CentOS 7 mini ，安装教程网上很多，不再赘述
安装镜像下载地址：
http://isoredirect.centos.org/centos/7/isos/x86_64/
按提示安装完系统后，进入系统逐步骤配置。
有的Mini版本默认不带ifconfig命令，安装完成后可使用"dhclient"和 "ip add"命令查询IP地址信息，先让CentOS 连入互联网，
[root@localhost ~]# dhclient
[root@localhost ~]# ip add
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:40:cf:dc brd ff:ff:ff:ff:ff:ffinet 192.168.2.150/24 brd 192.168.2.255 scope global noprefixroute dynamic ens33valid_lft 602786sec preferred_lft 602786secinet 192.168.2.231/24 brd 192.168.2.255 scope global secondary dynamic ens33valid_lft 604788sec preferred_lft 604788secinet6 fe80::5720:3274:4656:f9a8/64 scope link noprefixroute valid_lft forever preferred_lft forever
[root@localhost ~]#
查出本地ip地址为 192.168.2.150 和192.168.2.231，本地客户端ping测试一下，IP能通即可使用远程管理工具使用SSH命令登入，方便命令复制粘贴和整理。
ssh root@192.168.2.231
出现“Are you sure you want to continue connecting (yes/no/[fingerprint])? ” 时输入“yes”连接CentOS主机
输出信息如下：
(base) tony@Mac ~ % ssh root@192.168.2.231
The authenticity of host '192.168.2.231 (192.168.2.231)' can't be established.
ED25519 key fingerprint is SHA256:gEwRjBgU36s9mLvP9R9oJOLEUPvy/KnSlFYIrtbIJ6Y.
This host key is known by the following other names/addresses:~/.ssh/known_hosts:5: 192.168.2.150
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added '192.168.2.231' (ED25519) to the list of known hosts.
root@192.168.2.231's password:
Last login: Thu Dec 7 10:18:29 2023 from 192.168.2.221
-bash: warning: setlocale: LC_CTYPE: cannot change locale (UTF-8): No such file or directory
[root@localhost ~]# 安装ifconfig命令
- 首先，让我们找出哪个包提供了ifconfig命令。要完成这项任务，输入以下命令：
yum provides ifconfig
输出：
[root@localhost ~]# yum provides ifconfig
Failed to set locale, defaulting to C
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile* base: mirrors.ustc.edu.cn* extras: mirrors.ustc.edu.cn* updates: mirrors.ustc.edu.cn
net-tools-2.0-0.25.20131004git.el7.x86_64 : Basic networking tools
Repo : @base
Matched from:
Filename : /usr/sbin/ifconfig[root@localhost ~]#
2.就像你在上面的输出中所看到的，net-tools包提供了ifconfig命令。因此，让我们安装net-tools包来使用ifconfig命令。
yum install net-tools
3.现在，你就可以像以往一样使用ifconfig命令了。
[root@localhost ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500inet 192.168.2.150 netmask 255.255.255.0 broadcast 192.168.2.255inet6 fe80::5720:3274:4656:f9a8 prefixlen 64 scopeid 0x20<link>ether 00:0c:29:40:cf:dc txqueuelen 1000 (Ethernet)RX packets 111766 bytes 160337382 (152.9 MiB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 15956 bytes 1308349 (1.2 MiB)TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536inet 127.0.0.1 netmask 255.0.0.0inet6 ::1 prefixlen 128 scopeid 0x10<host>loop txqueuelen 1000 (Local Loopback)RX packets 68 bytes 5912 (5.7 KiB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 68 bytes 5912 (5.7 KiB)TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0[root@localhost ~]#