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11.AWS-Snapshots

11.AWS-Snapshots......


.....AWS-SNAPSHOTS..............

......different types of EBS  volumes... see pics..
IOPS I/P O/P Per second..
1.General purpose SSD (gp2)
2.Provisioned IOPS SSD (io1)
3.cloud HDD
4.Throughput optimisted HDD
5.Magnetic

aws caluclater...
.................
.......
Snap shot.....incremental and decrimental..

patching, time we takin befor snap shot..

...mkdir /testfolder,cd /testfolder/,mkdir nosnaptaken,cd nosnaptaken/,nano file1,cd ..  , ll
 go volume create a snapshot.. snap1 (1st snap copy all data..)
 volume can not transfer other location but using snap shot you can transfore..

..........
...inside testfolder../mkdir snap1,cd snap1/,nano file2, cd.. , ll
take snap shot...snap2,,,,(changes taken )

..............................



...inside testfolder../mkdir snap2,cd snap2/,nano file3, cd.. , ll
take snap shot...snap3,,,,,,,,(changes taken )


....................................................

...inside testfolder../mkdir snap3,cd snap3/,nano file4, cd.. , ll
take snap shot...snap4,(changes taken )

.............

all snap shots back end stored in S3 , But root volume in EBS..


..
...cd /testfolder/ , ll,rm -rf * , ll, ( all folders deleted...)

i want restore all folders.. so latest snap shot to chane volume and assined to inst..
(sanp shot in s3 but volume is in EBS.. IMP)


...lsblk(before attaching volume),lsblk(after attaching volumes..)
by default that volume created disk to part..just reqired mounting..
...cd .. ,mkdir /restore ,mount /dev/xvdf1 /restore/ ,ls /restore/testfolder/
...cp -rf /restore/testfolder/ /testfolder/ , cleare
... ls /testfolder/ , ls /testfolder/testfolder/
... lsblk,umount /restore ..........delete that volume...in volmes...(data moved in root volume..)


............decrimental.........
if i am deleted snap 123 then that all data stored in snap4..
if i am deletd snap4 very denger....... not restored ...
.............................
...............Snapshot Lifecycle Policy.....................

dailly,, time 21.oo, 30 snaps,, last 1 month recycled...
othe wis using lamda script....

.........machine inf..
in putty..
...ec2-metadata,curl http://169.254.169.254/latest/meta-data/
(google ec2 meta data shell script..)


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