RED HAT STORAGE FOR MERE MORTALS · COMMUNITY As Fedora is the upstream project from which Red Hat...
Transcript of RED HAT STORAGE FOR MERE MORTALS · COMMUNITY As Fedora is the upstream project from which Red Hat...
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RED HAT STORAGE FOR MERE MORTALS
Thomas Cameron, RHCA, RHCSS, RHCDS, RHCVA, RHCX
Chief Architect, Central US
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AGENDA
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AGENDA
● What is Red Hat Storage?● History● Community● Architecture● Node Installation● Installing RHS● Adding servers to the trusted pool● Distributed volumes● Replicated volumes● Distributed + replicated volumes
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AGENDA
● Attaching to Red Hat Storage with NFS
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WHAT IS RED HAT STORAGE?
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WHAT IS RED HAT STORAGE
● Red Hat Storage is a commercially supported distribution of GlusterFS● GlusterFS is a scale-out network-attached storage filesystem which uses commodity
x86 hardware and inexpensive disks, JBODs, or (rarely) SAN● It can use ethernet or InfiniBand RDMA for transport
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HISTORY
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HISTORY
● The company Gluster was founded in 2005 by founder and CTO Anand Babu Periasamy (now an angel investor in Silicon Valley)
● In 2010, Ben Golub (now CEO of Docker) became the CEO● In 2011, Red Hat acquired Gluster● In 2012, Red Hat Storage was launched
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COMMUNITY
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COMMUNITY
● As Fedora is the upstream project from which Red Hat uses technologies to build Red Hat Enterprise Linux, the Gluster Project (www.gluster.org) is the upstream for Red Hat Storage.
● Documentation, IRC channels, development tools and docs, etc. are all there for the community.
● Community governance with Red Hat's sponsorship.
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ARCHITECTURE
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ARCHITECTURE
● Server component (glusterfsd) ● Client component (glusterfs)● The client runs in user space (FUSE)● File location determined by a hashing algorithm - no metadata services
– No SPOF● Global namespace
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NODE INSTALLATION
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NODE INSTALLATION
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NODE INSTALLATION
● Note the inode option “size” is set to 512 bytes, not the default 256!
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NODE INSTALLATION
● Once you've mounted the filesystem, you can “cheat” and get the correct syntax for /etc/fstab from /etc/mtab.
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NODE INSTALLATION
● Register the systems to Red Hat
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CLIENT INSTALLATION
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ADDING SERVERS TO THE TRUSTED POOL
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DISTRIBUTED VOLUMES
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ACCESSING DISTRIBUTED VOLUMES
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TEST FILE CREATION
● Note that on the client, creating 1000 files indicates that there are 1000 files in one mount point
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TEST FILE CREATION
● But when you look at the bricks, the files are roughly distributed with about a quarter of them on each of the 4 machines.
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REPLICATED VOLUMES
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ACCESSING REPLICATED VOLUMES
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ACCESSING REPLICATED VOLUMES
● This time, creating 1000 files from the client creates 1000 files on each of the replicas.
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DISTRIBUTED + REPLICATED VOLUMES
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ACCESSING DISTRIBUTED + REPLICATED VOLUMES
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ACCESSING DISTRIBUTED+REPLICATED VOLUMES
● This time, since it's a distributed set of replicated (in this case, two way, or mirrored) volumes, creating 1000 files on the clients results in approximately half of the files getting created on each of the distributed nodes, then it is replicated. So 500-ish files on each node.
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CONNECTING VIA NFS
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CONNECTING VIA NFS
● On the client, install the utilities necessary for NFS
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QUESTIONS?
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THANKS! DO THE SURVEY!
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