yongsub_yu@cloudshell:~ (ap-seoul-1)$ ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/home/yongsub_yu/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/yongsub_yu/.ssh/id_rsa.
Your public key has been saved in /home/yongsub_yu/.ssh/id_rsa.pub.
The key fingerprint is:
The key's randomart image is:
+---[RSA 2048]----+
| .o .+ |
| .. = +=o. o|
| .B BEoo+ +.|
| ..+o=.=.. = |
| o.oSo o + . |
| ...o . . + |
| .. o . |
| . o +... |
| . =ooo.+|
+----[SHA256]-----+
접속대상 서버의 .ssh/autorized_key 파일에 위에서 생성된 public_key 등록
접속할 서버 .ssh/config 에 등록
yongsub_yu@cloudshell:~ (ap-seoul-1)$ cat .ssh/config
Host
HostName
User
IdentityFile ~/.ssh/id_rsa
Host
HostName
User
IdentityFile ~/.ssh/id_rsa
Host
HostName
User
IdentityFile ~/.ssh/id_rsa
Host sbg
HostName
User
IdentityFile ~/.ssh/id_rsa
Oracle cloud free tier Ampere Arm A1 를 설치하고 기존 E2.1.Micro 머신과 성능면에서 어떤 차이가 있는지 테스트 해보았다.
생성한 인스턴스는 3개이다.
E2 머신은 2개까지 생성할 수 있으며 각각 1 OCPU, 1GB MEM 이다.
A1 머신은 arm 4 OCPU, 24GB MEM이다.
그리고 스토리지는 200GB까지 제공된다.
E2.1.Micro 2*50GB, A1.Flex 100GB
sysbench 테스트 결과
왼쪽 A1.Flex(threads=4), 오른쪽 E2.1.Micro(threads=2)
CPU TestMemory TestFileio Test
geekbench 테스트 결과
A1.FlexE2.1.MicroCompare : A1.Flex vs E2.1.Micro
Internet speed test
A1.Flex
ubuntu@joseph.home.kg:~$ speedtest-cli --server 6527
Retrieving speedtest.net configuration...
Testing from Oracle Cloud (146.56.135.248)...
Retrieving speedtest.net server list...
Retrieving information for the selected server...
Hosted by kdatacenter.com (Seoul) [1.72 km]: 126.767 ms
Testing download speed................................................................................
Download: 327.15 Mbit/s
Testing upload speed......................................................................................................
Upload: 286.66 Mbit/s
E2.1.Micro
ubuntu@joseph.ml:~$ speedtest-cli --server 6527
Retrieving speedtest.net configuration...
Testing from Oracle Cloud (132.226.174.165)...
Retrieving speedtest.net server list...
Retrieving information for the selected server...
Hosted by kdatacenter.com (Seoul) [1.72 km]: 25.31 ms
Testing download speed................................................................................
Download: 47.77 Mbit/s
Testing upload speed......................................................................................................
Upload: 49.24 Mbit/s
GCP e2-micro (2 vCPUs, 1 GB memory)
sysbench
ubuntu@seobi.ga:~/.ssh$ sysbench cpu --threads=2 run
sysbench 1.0.20 (using system LuaJIT 2.1.0-beta3)
Running the test with following options:
Number of threads: 2
Initializing random number generator from current time
Prime numbers limit: 10000
Initializing worker threads...
Threads started!
CPU speed:
events per second: 1434.84
General statistics:
total time: 10.0006s
total number of events: 14352
Latency (ms):
min: 1.25
avg: 1.39
max: 1.75
95th percentile: 1.42
sum: 19993.78
Threads fairness:
events (avg/stddev): 7176.0000/0.00
execution time (avg/stddev): 9.9969/0.00
ubuntu@seobi.ga:~/.ssh$ sysbench memory --threads=2 run
sysbench 1.0.20 (using system LuaJIT 2.1.0-beta3)
Running the test with following options:
Number of threads: 2
Initializing random number generator from current time
Running memory speed test with the following options:
block size: 1KiB
total size: 102400MiB
operation: write
scope: global
Initializing worker threads...
Threads started!
Total operations: 60038571 (6002657.69 per second)
58631.42 MiB transferred (5861.97 MiB/sec)
General statistics:
total time: 10.0001s
total number of events: 60038571
Latency (ms):
min: 0.00
avg: 0.00
max: 0.53
95th percentile: 0.00
sum: 11801.23
Threads fairness:
events (avg/stddev): 30019285.5000/13537.50
execution time (avg/stddev): 5.9006/0.00
ubuntu@seobi.ga:~/.ssh$ sysbench fileio --file-test-mode=seqwr --threads=2 run
sysbench 1.0.20 (using system LuaJIT 2.1.0-beta3)
Running the test with following options:
Number of threads: 2
Initializing random number generator from current time
Extra file open flags: (none)
128 files, 16MiB each
2GiB total file size
Block size 16KiB
Periodic FSYNC enabled, calling fsync() each 100 requests.
Calling fsync() at the end of test, Enabled.
Using synchronous I/O mode
Doing sequential write (creation) test
Initializing worker threads...
Threads started!
File operations:
reads/s: 0.00
writes/s: 11316.04
fsyncs/s: 14504.31
Throughput:
read, MiB/s: 0.00
written, MiB/s: 176.81
General statistics:
total time: 10.0106s
total number of events: 258266
Latency (ms):
min: 0.01
avg: 0.08
max: 7.62
95th percentile: 0.12
sum: 19870.63
Threads fairness:
events (avg/stddev): 129133.0000/1827.00
execution time (avg/stddev): 9.9353/0.00
geekbench
speedtest
yongsub_yun@instance-1:~/tmp$ speedtest-cli --server 35180
Retrieving speedtest.net configuration...
Testing from Google Cloud (35.233.201.214)...
Retrieving speedtest.net server list...
Retrieving information for the selected server...
Hosted by Ziply Fiber (Seattle, WA) [239.62 km]: 7.884 ms
Testing download speed................................................................................
Download: 2262.39 Mbit/s
Testing upload speed......................................................................................................
Upload: 869.60 Mbit/s
