如题,不过我买的时候买早了,导致我目前将近一个多月都没用
我挑选的是菲律宾马尼拉地区并预装Docker
到手之后由于我不喜欢它自带的那个远程连接workbench的界面所以用termius连接吧
然后先查看真实配置
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lscpu
得到cpu信息如下,确实是2核
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Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 2
On-line CPU(s) list: 0,1
Thread(s) per core: 2
Core(s) per socket: 1
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
BIOS Vendor ID: Alibaba Cloud
CPU family: 6
Model: 85
Model name: Intel(R) Xeon(R) Platinum
BIOS Model name: pc-i440fx-2.1
Stepping: 4
CPU MHz: 2499.998
BogoMIPS: 4999.99
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 1024K
L3 cache: 33792K
NUMA node0 CPU(s): 0,1
Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single pti fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid avx512f avx512dq rdseed adx smap clflushopt clwb avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves arat
然后查看内存
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free -h
确实是2G但是没有开swap缓存
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total used free shared buff/cache available
Mem: 1.8Gi 291Mi 561Mi 2.0Mi 1.0Gi 1.4Gi
Swap: 0B 0B 0B
查看硬盘
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df -h
确实是40G
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Filesystem Size Used Avail Use% Mounted on
devtmpfs 916M 0 916M 0% /dev
tmpfs 936M 0 936M 0% /dev/shm
tmpfs 936M 500K 936M 1% /run
tmpfs 936M 0 936M 0% /sys/fs/cgroup
/dev/vda3 40G 6.7G 31G 18% /
/dev/vda2 200M 5.8M 194M 3% /boot/efi
tmpfs 188M 0 188M 0% /run/user/1000
tmpfs 188M 0 188M 0% /run/user/0
查看 Linux 系统版本
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cat /etc/os-release
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NAME="Alibaba Cloud Linux"
VERSION="3 (OpenAnolis Edition)"
ID="alinux"
ID_LIKE="rhel fedora centos anolis"
VERSION_ID="3"
VARIANT="OpenAnolis Edition"
VARIANT_ID="openanolis"
ALINUX_MINOR_ID="2104"
ALINUX_UPDATE_ID="10"
PLATFORM_ID="platform:al8"
PRETTY_NAME="Alibaba Cloud Linux 3.2104 U10 (OpenAnolis Edition)"
ANSI_COLOR="0;31"
HOME_URL="https://www.aliyun.com/"
查看监听端口
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ss -lntp
就是22端口
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State Recv-Q Send-Q Local Address:Port Peer Address:Port Process
LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:(("sshd",pid=2721,fd=3))
LISTEN 0 128 [::]:22 [::]:* users:(("sshd",pid=2721,fd=4))
开启swap 2GB缓存并永久启用
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sudo fallocate -l 2G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
检测是否开启
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swapon --show
可以看到
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NAME TYPE SIZE USED PRIO
/swapfile file 2G 0B -2
或者也可以直接查看内存
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free -h
得到
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total used free shared buff/cache available
Mem: 1.8Gi 288Mi 562Mi 1.0Mi 1.0Gi 1.4Gi
Swap: 2.0Gi 0B 2.0Gi
ok,已开启
防火墙
先看看防火墙状态,阿里云已经默认开了防火墙且已有几个端口添加自动添加了
所以无需操作,只需添加防火墙白名单即可
缺点
太慢了,造的VPN根本无法正常用,顶多只能浏览普通网站,无法看视频
所以我们需要开启BBR拥塞算法
BBR只是优化不保证能够降低延迟,取决于服务器自身
启用 BBR TCP 拥塞控制算法
首先看看是否为BBR模式
powershell
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sysctl net.ipv4.tcp_congestion_control net.core.default_qdisc
若显示的是net.ipv4.tcp_congestion_control = cubic net.core.default_qdisc = fq_codel
我们需要进一步操作启用BBR
powershell
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cat > /etc/modules-load.d/tcp_bbr.conf <<'EOF'
tcp_bbr
EOF
cat > /etc/sysctl.d/99-bbr.conf <<'EOF'
net.core.default_qdisc=fq
net.ipv4.tcp_congestion_control=bbr
EOF
sysctl --system
我们验证一下
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sysctl net.ipv4.tcp_congestion_control net.core.default_qdisc
若显示net.ipv4.tcp_congestion_control = bbr net.core.default_qdisc = fq表示已开启