Vastavalt Opennet: LeoFS — hajutatud tõrketaluv objektide salvestusruum LeoFS, mis ühildub Amazon S3 API-d ja REST-API-d kasutavate klientidega ning toetab ka NFS-serveri režiimi. Seal on optimeerimised nii väikeste kui ka väga suurte objektide salvestamiseks, on sisseehitatud vahemällu salvestamise mehhanism ning võimalik on andmekeskuste vahel salvestuse replikatsioon. Projekti eesmärkide hulka kuulub 99.9999999% töökindluse saavutamine duplikaatide üleliigse paljundamise ja ühe rikkepunkti kõrvaldamise kaudu. Projekti kood on kirjutatud erlangi keeles.
LeoFS koosneb kolmest komponendist:
LeoFS-i salvestusruum — teenindab objektide ja metaandmete lisamise, toomise ja kustutamise toiminguid, vastutab replikatsiooni, taastamise ja kliendipäringute järjekorda seadmise eest.
LeoFS Gateway — teenindab HTTP päringuid ja suunab vastused REST-API või S3-API abil klientidele, tagab kõige vajalikumate andmete vahemällu salvestamise mällu ja kettale.
LeoFS Manager — jälgib LeoFS Gateway ja LeoFS Storage sõlmede tööd, jälgib sõlmede olekut ja kontrollib kontrollsummasid. Tagab andmete terviklikkuse ja kõrge salvestusruumi kättesaadavuse.
Selles postituses installime Leofsi, kasutades ansible-playbooki ja testime S3, NFS-i.
Kui proovite installida LeoFS-i ametlike mänguraamatute abil, ilmnevad erinevad vead: 1,2. Selles postituses kirjutan, mida tuleb teha, et neid vigu vältida.
Kui kasutate ansible-playbooki, peate installima netcati.
Inventari näide
Näidisvaru (hosts.sample hoidlas):
# Please check roles/common/vars/leofs_releases for available versions
[all:vars]
leofs_version=1.4.3
build_temp_path="/tmp/leofs_builder"
build_install_path="/tmp/"
build_branch="master"
source="package"
#[builder]
#172.26.9.177
# nodename of leo_manager_0 and leo_manager_1 are set at group_vars/all
[leo_manager_0]
172.26.9.176
# nodename of leo_manager_0 and leo_manager_1 are set at group_vars/all
[leo_manager_1]
172.26.9.178
[leo_storage]
172.26.9.179 [email protected]
172.26.9.181 [email protected]
172.26.9.182 [email protected]
172.26.9.183 [email protected]
[leo_gateway]
172.26.9.180 [email protected]
172.26.9.184 [email protected]
[leofs_nodes:children]
leo_manager_0
leo_manager_1
leo_gateway
leo_storage
Serveri ettevalmistamine
Selinuxi keelamine. Loodan, et kogukond loob LeoFS-i jaoks Selinuxi eeskirjad.
- name: Install libselinux as prerequisite for SELinux Ansible module
yum:
name: "{{item}}"
state: latest
with_items:
- libselinux-python
- libsemanage-python
- name: Disable SELinux at next reboot
selinux:
state: disabled
- name: Set SELinux in permissive mode until the machine is rebooted
command: setenforce 0
ignore_errors: true
changed_when: false
Paigaldamine netcat и redhat-lsb-core. netcat jaoks vaja leofs-adm, redhat-lsb-core OS-i versiooni määramiseks siin.
Esmane ja sekundaarne on näha ansible-playbooki logides
Väljund on midagi sellist
[System Confiuration]
-----------------------------------+----------
Item | Value
-----------------------------------+----------
Basic/Consistency level
-----------------------------------+----------
system version | 1.4.3
cluster Id | leofs_1
DC Id | dc_1
Total replicas | 2
number of successes of R | 1
number of successes of W | 1
number of successes of D | 1
number of rack-awareness replicas | 0
ring size | 2^128
-----------------------------------+----------
Multi DC replication settings
-----------------------------------+----------
[mdcr] max number of joinable DCs | 2
[mdcr] total replicas per a DC | 1
[mdcr] number of successes of R | 1
[mdcr] number of successes of W | 1
[mdcr] number of successes of D | 1
-----------------------------------+----------
Manager RING hash
-----------------------------------+----------
current ring-hash | a0314afb
previous ring-hash | a0314afb
-----------------------------------+----------
[State of Node(s)]
-------+----------------------+--------------+---------+----------------+----------------+----------------------------
type | node | state | rack id | current ring | prev ring | updated at
-------+----------------------+--------------+---------+----------------+----------------+----------------------------
S | [email protected] | running | | a0314afb | a0314afb | 2019-12-05 10:33:47 +0000
S | [email protected] | running | | a0314afb | a0314afb | 2019-12-05 10:33:47 +0000
S | [email protected] | running | | a0314afb | a0314afb | 2019-12-05 10:33:47 +0000
S | [email protected] | attached | | | | 2019-12-05 10:33:58 +0000
G | [email protected] | running | | a0314afb | a0314afb | 2019-12-05 10:33:49 +0000
G | [email protected] | running | | a0314afb | a0314afb | 2019-12-05 10:33:49 +0000
-------+----------------------+--------------+---------+----------------+----------------+----------------------------
leofs-adm add-bucket leofs 9c2615f32e81e6a1caf5
OK
Ämbriloend:
leofs-adm get-buckets
cluster id | bucket | owner | permissions | created at
-------------+----------+--------+------------------+---------------------------
leofs_1 | leofs | leofs | Me(full_control) | 2019-12-02 10:44:02 +0000
s3cmd seadistamine
Valdkonnas HTTP Proxy server name määrake lüüsiserveri IP
s3cmd --configure
Enter new values or accept defaults in brackets with Enter.
Refer to user manual for detailed description of all options.
Access key and Secret key are your identifiers for Amazon S3. Leave them empty for using the env variables.
Access Key [9c2615f32e81e6a1caf5]:
Secret Key [8aaaa35c1ad78a2cbfa1a6cd49ba8aaeb3ba39eb]:
Default Region [US]:
Use "s3.amazonaws.com" for S3 Endpoint and not modify it to the target Amazon S3.
S3 Endpoint [s3.amazonaws.com]:
Use "%(bucket)s.s3.amazonaws.com" to the target Amazon S3. "%(bucket)s" and "%(location)s" vars can be used
if the target S3 system supports dns based buckets.
DNS-style bucket+hostname:port template for accessing a bucket [%(bucket)s.s3.amazonaws.com]: leofs
Encryption password is used to protect your files from reading
by unauthorized persons while in transfer to S3
Encryption password:
Path to GPG program [/usr/bin/gpg]:
When using secure HTTPS protocol all communication with Amazon S3
servers is protected from 3rd party eavesdropping. This method is
slower than plain HTTP, and can only be proxied with Python 2.7 or newer
Use HTTPS protocol [No]:
On some networks all internet access must go through a HTTP proxy.
Try setting it here if you can't connect to S3 directly
HTTP Proxy server name [172.26.9.180]:
HTTP Proxy server port [8080]:
New settings:
Access Key: 9c2615f32e81e6a1caf5
Secret Key: 8aaaa35c1ad78a2cbfa1a6cd49ba8aaeb3ba39eb
Default Region: US
S3 Endpoint: s3.amazonaws.com
DNS-style bucket+hostname:port template for accessing a bucket: leofs
Encryption password:
Path to GPG program: /usr/bin/gpg
Use HTTPS protocol: False
HTTP Proxy server name: 172.26.9.180
HTTP Proxy server port: 8080
Test access with supplied credentials? [Y/n] Y
Please wait, attempting to list all buckets...
Success. Your access key and secret key worked fine :-)
Now verifying that encryption works...
Not configured. Never mind.
Save settings? [y/N] y
Configuration saved to '/home/user/.s3cfg'
Kui näete veateadet ERROR: S3 error: 403 (AccessDenied): Juurdepääs keelatud:
s3cmd put test.py s3://leofs/
upload: 'test.py' -> 's3://leofs/test.py' [1 of 1]
382 of 382 100% in 0s 3.40 kB/s done
ERROR: S3 error: 403 (AccessDenied): Access Denied
Seejärel peate s3cmd konfiguratsioonis muutma signature_v2 väärtuseks True. Üksikasjad selles probleem.
Kui signatuur_v2 on Väär, ilmneb selline tõrge:
WARNING: Retrying failed request: /?delimiter=%2F (getaddrinfo() argument 2 must be integer or string)
WARNING: Waiting 3 sec...
WARNING: Retrying failed request: /?delimiter=%2F (getaddrinfo() argument 2 must be integer or string)
WARNING: Waiting 6 sec...
ERROR: Test failed: Request failed for: /?delimiter=%2F
Koormustestimine
Looge 1 GB fail
fallocate -l 1GB 1gb
Laadige see Leofsi üles
time s3cmd put 1gb s3://leofs/
real 0m19.099s
user 0m7.855s
sys 0m1.620s
Statistika
leofs-adm du 1 sõlme jaoks:
leofs-adm du [email protected]
active number of objects: 156
total number of objects: 156
active size of objects: 602954495
total size of objects: 602954495
ratio of active size: 100.0%
last compaction start: ____-__-__ __:__:__
last compaction end: ____-__-__ __:__:__
Näeme, et järeldus ei ole väga informatiivne.
Vaatame, kus see fail asub.
leofs-adm, kus on leofs/1 GB
NFS-i aktiveerime Leo Gateway 172.26.9.184 serveris.
Installige serverisse ja kliendisse nfs-utils
sudo yum install nfs-utils
Vastavalt juhistele parandame konfiguratsioonifaili /usr/local/leofs/current/leo_gateway/etc/leo_gateway.conf
protocol = nfs
Käivitage serveris 172.26.9.184 rpcbind ja leofs-gateway
sudo service rpcbind start
sudo service leofs-gateway restart
Looge serveris, kus töötab leo_manager NFS-i jaoks ämber ja looge võti NFS-iga ühenduse loomiseks
leofs-adm add-bucket test 05236
leofs-adm gen-nfs-mnt-key test 05236 ip-адрес-nfs-клиента
NFS-iga ühendamine
sudo mkdir /mnt/leofs
## for Linux - "sudo mount -t nfs -o nolock <host>:/<bucket>/<token> <dir>"
sudo mount -t nfs -o nolock ip-адрес-nfs-сервера-там-где-у-вас-установлен-gateway:/bucket/access_key_id/ключ-полученный-от-gen-nfs-mnt-key /mnt/leofs
sudo mount -t nfs -o nolock 172.26.9.184:/test/05236/bb5034f0c740148a346ed663ca0cf5157efb439f /mnt/leofs
Kettaruumi vaatamine NFS-kliendi kaudu
Kettaruum, võttes arvesse, et igal salvestussõlmel on 40 GB ketas (3 töötavat sõlme, 1 ühendatud sõlm):
df -hP
Filesystem Size Used Avail Use% Mounted on
172.26.9.184:/test/05236/e7298032e78749149dd83a1e366afb328811c95b 60G 3.6G 57G 6% /mnt/leofs
LeoFS-i installimine 6 salvestussõlmega.
Inventar (ilma ehitajata):
# Please check roles/common/vars/leofs_releases for available versions
[all:vars]
leofs_version=1.4.3
build_temp_path="/tmp/leofs_builder"
build_install_path="/tmp/"
build_branch="master"
source="package"
# nodename of leo_manager_0 and leo_manager_1 are set at group_vars/all
[leo_manager_0]
172.26.9.177
# nodename of leo_manager_0 and leo_manager_1 are set at group_vars/all
[leo_manager_1]
172.26.9.176
[leo_storage]
172.26.9.178 [email protected]
172.26.9.179 [email protected]
172.26.9.181 [email protected]
172.26.9.182 [email protected]
172.26.9.183 [email protected]
172.26.9.185 [email protected]
[leo_gateway]
172.26.9.180 [email protected]
172.26.9.184 [email protected]
[leofs_nodes:children]
leo_manager_0
leo_manager_1
leo_gateway
leo_storage
Väljund leofs-adm olek
Väljund leofs-adm olek
[System Confiuration]
-----------------------------------+----------
Item | Value
-----------------------------------+----------
Basic/Consistency level
-----------------------------------+----------
system version | 1.4.3
cluster Id | leofs_1
DC Id | dc_1
Total replicas | 2
number of successes of R | 1
number of successes of W | 1
number of successes of D | 1
number of rack-awareness replicas | 0
ring size | 2^128
-----------------------------------+----------
Multi DC replication settings
-----------------------------------+----------
[mdcr] max number of joinable DCs | 2
[mdcr] total replicas per a DC | 1
[mdcr] number of successes of R | 1
[mdcr] number of successes of W | 1
[mdcr] number of successes of D | 1
-----------------------------------+----------
Manager RING hash
-----------------------------------+----------
current ring-hash | d8ff465e
previous ring-hash | d8ff465e
-----------------------------------+----------
[State of Node(s)]
-------+----------------------+--------------+---------+----------------+----------------+----------------------------
type | node | state | rack id | current ring | prev ring | updated at
-------+----------------------+--------------+---------+----------------+----------------+----------------------------
S | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:29 +0000
S | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:29 +0000
S | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:30 +0000
S | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:29 +0000
S | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:29 +0000
S | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:29 +0000
G | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:31 +0000
G | [email protected] | running | | d8ff465e | d8ff465e | 2019-12-06 05:18:31 +0000
-------+----------------------+--------------+---------+----------------+----------------+----------------------------
Kettaruum, võttes arvesse, et igal salvestussõlmel on 40 GB ketas (6 töötavat sõlme):
df -hP
Filesystem Size Used Avail Use% Mounted on
172.26.9.184:/test/05236/e7298032e78749149dd83a1e366afb328811c95b 120G 3.6G 117G 3% /mnt/leofs