Glede na : — porazdeljeno shranjevanje objektov, odporno na napake , združljiv z odjemalci, ki uporabljajo Amazon S3 API in REST-API, in podpira tudi način strežnika NFS. Na voljo so optimizacije za shranjevanje tako majhnih kot zelo velikih objektov, vgrajen je mehanizem predpomnjenja, možna je replikacija shranjevanja med podatkovnimi centri. Cilji projekta vključujejo doseganje 99.9999999 % zanesljivosti z redundantnim podvajanjem dvojnikov in odpravo ene same točke okvare. Koda projekta je napisana v Erlangu.
LeoFS je sestavljen iz treh komponent:
- — služi operacijam dodajanja, pridobivanja in brisanja objektov in metapodatkov, je odgovoren za izvajanje replikacije, obnovitve in čakalne vrste zahtev odjemalcev.
- — streže HTTP zahteve in preusmerja odgovore odjemalcem z uporabo REST-API ali S3-API, zagotavlja predpomnjenje najbolj potrebnih podatkov v pomnilniku in na disku.
- — spremlja delovanje vozlišč LeoFS Gateway in LeoFS Storage, spremlja stanje vozlišč in preverja kontrolne vsote. Zagotavlja celovitost podatkov in visoko razpoložljivost shranjevanja.
V tej objavi bomo namestili Leofs z uporabo ansible-playbook in preizkusili S3, NFS.
Če poskusite namestiti LeoFS z uporabo uradnih priročnikov, boste naleteli na različne napake: ,. V tej objavi bom napisal, kaj je treba narediti, da se izognemo tem napakam.
Kjer boste izvajali ansible-playbook, morate namestiti netcat.
Primer popisa
Primer popisa (v repozitoriju hosts.sample):
# 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_storagePriprava strežnika
Onemogočanje Selinuxa. Upam, da bo skupnost ustvarila politike Selinux za LeoFS.
- 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
Namestitev netcat и redhat-lsb-core. netcat potrebno za leofs-adm, redhat-lsb-core potrebno za določitev različice OS .
- name: Install Packages
yum: name={{ item }} state=present
with_items:
- nmap-ncat
- redhat-lsb-coreUstvarjanje uporabniškega leofa in njegovo dodajanje v skupino koles
- name: Create user leofs
group:
name: leofs
state: present
- name: Allow 'wheel' group to have passwordless sudo
lineinfile:
dest: /etc/sudoers
state: present
regexp: '^%wheel'
line: '%wheel ALL=(ALL) NOPASSWD: ALL'
validate: 'visudo -cf %s'
- name: Add the user 'leofs' to group 'wheel'
user:
name: leofs
groups: wheel
append: yesNamestitev Erlanga
- name: Remote erlang-20.3.8.23-1.el7.x86_64.rpm install with yum
yum: name=https://github.com/rabbitmq/erlang-rpm/releases/download/v20.3.8.23/erlang-20.3.8.23-1.el7.x86_64.rpm
Celotno različico popravljene knjige Ansible playbook lahko najdete tukaj:
Namestitev, konfiguracija, zagon
Naprej izvajamo, kot je zapisano v brez build_leofs.yml
## Install LeoFS
$ ansible-playbook -i hosts install_leofs.yml
## Config LeoFS
$ ansible-playbook -i hosts config_leofs.yml
## Start LeoFS
$ ansible-playbook -i hosts start_leofs.ymlPreverjanje stanja gruče v Primarnem LeoManagerju
leofs-adm statusPrimarno in sekundarno si lahko ogledate v dnevnikih ansible-playbook
Rezultat bo nekaj takega
[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
-------+----------------------+--------------+---------+----------------+----------------+----------------------------Ustvarjanje uporabnika
Ustvari uporabnika leofs:
leofs-adm create-user leofs leofs
access-key-id: 9c2615f32e81e6a1caf5
secret-access-key: 8aaaa35c1ad78a2cbfa1a6cd49ba8aaeb3ba39ebSeznam uporabnikov:
leofs-adm get-users
user_id | role_id | access_key_id | created_at
------------+---------+------------------------+---------------------------
_test_leofs | 9 | 05236 | 2019-12-02 06:56:49 +0000
leofs | 1 | 9c2615f32e81e6a1caf5 | 2019-12-02 10:43:29 +0000Ustvari vedro
Naredil vedro
leofs-adm add-bucket leofs 9c2615f32e81e6a1caf5
OKSeznam:
leofs-adm get-buckets
cluster id | bucket | owner | permissions | created at
-------------+----------+--------+------------------+---------------------------
leofs_1 | leofs | leofs | Me(full_control) | 2019-12-02 10:44:02 +0000Konfiguriranje s3cmd
Na področju HTTP Proxy server name določite IP strežnika Gateway
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'Če se prikaže napaka NAPAKA: Napaka S3: 403 (Dostop zavrnjen): Dostop zavrnjen:
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 DeniedPotem morate spremeniti signature_v3 v True v konfiguraciji s2cmd. Podrobnosti v tem .
Če je signature_v2 vrednost False, bo prišlo do napake, kot je ta:
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=%2FTestiranje obremenitve
Ustvari datoteko velikosti 1 GB
fallocate -l 1GB 1gbNaložite ga v Leofs
time s3cmd put 1gb s3://leofs/
real 0m19.099s
user 0m7.855s
sys 0m1.620sstatistika
leofs-adm du za 1 vozlišče:
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: ____-__-__ __:__:__Vidimo, da zaključek ni zelo informativen.
Poglejmo, kje se ta datoteka nahaja.
leofs-adm, kjer je leofs/1gb
leofs-adm whereis leofs/1gb
-------+----------------------+--------------------------------------+------------+--------------+----------------+----------------+----------------+----------------------------
del? | node | ring address | size | checksum | has children | total chunks | clock | when
-------+----------------------+--------------------------------------+------------+--------------+----------------+----------------+----------------+----------------------------
| [email protected] | 657a9f3a3db822a7f1f5050925b26270 | 976563K | a4634eea55 | true | 64 | 598f2aa976a4f | 2019-12-05 10:48:15 +0000
| [email protected] | 657a9f3a3db822a7f1f5050925b26270 | 976563K | a4634eea55 | true | 64 | 598f2aa976a4f | 2019-12-05 10:48:15 +0000Aktivirajte NFS
NFS aktiviramo na strežniku Leo Gateway 172.26.9.184.
Namestite nfs-utils na strežnik in odjemalca
sudo yum install nfs-utilsV skladu z navodili bomo popravili konfiguracijsko datoteko /usr/local/leofs/current/leo_gateway/etc/leo_gateway.conf
protocol = nfsNa strežniku 172.26.9.184 zaženite rpcbind in leofs-gateway
sudo service rpcbind start
sudo service leofs-gateway restartNa strežniku, kjer se izvaja leo_manager, ustvarite vedro za NFS in ustvarite ključ za povezavo z NFS
leofs-adm add-bucket test 05236
leofs-adm gen-nfs-mnt-key test 05236 ip-адрес-nfs-клиентаPovezovanje z NFS
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/leofsOglejte si prostor na disku prek odjemalca NFS
Prostor na disku, ob upoštevanju, da ima vsako vozlišče za shranjevanje 40 GB diska (3 delujoča vozlišča, 1 priključeno vozlišče):
df -hP
Filesystem Size Used Avail Use% Mounted on
172.26.9.184:/test/05236/e7298032e78749149dd83a1e366afb328811c95b 60G 3.6G 57G 6% /mnt/leofsNamestitev LeoFS s 6 vozlišči za shranjevanje.
Inventar (brez graditelja):
# 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_storageStanje izhoda leofs-adm
Stanje izhoda leofs-adm
[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
-------+----------------------+--------------+---------+----------------+----------------+----------------------------Prostor na disku, ob upoštevanju, da ima vsako vozlišče za shranjevanje 40 GB diska (6 delujočih vozlišč):
df -hP
Filesystem Size Used Avail Use% Mounted on
172.26.9.184:/test/05236/e7298032e78749149dd83a1e366afb328811c95b 120G 3.6G 117G 3% /mnt/leofsČe se uporablja 5 vozlišč za shranjevanje
[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]df -hP
172.26.9.184:/test/05236/e7298032e78749149dd83a1e366afb328811c95b 100G 3.0G 97G 3% /mnt/leofsDnevniki
Dnevniki se nahajajo v imenikih /usr/local/leofs/current/*/log
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