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Merge branch 'master' of https://github.com/seaweedfs/seaweedfs.wiki
Chris Lu
@@ -66,3 +66,26 @@ The balancing plan will try to evenly spread the number of writable and readonly
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Run `weed shell` and `volume.mount -node <host>:<port> -volumeId <id>` to mount a volume file.
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To mount all new volume files you can send a hang-up signal to the volume server causing a reload with a command such as `pkill -HUP -f "weed volume"`.
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## Servicing live volumes
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When dealing with hardware storage issues, it can be useful to prevent writes to volume servers _without_ stopping the service altogether - f.ex. on volumes with RAID storage backends. Volume servers support a maintenance mode for this: when enabled, the server becomes read-only. Reads will succeed, but any write attempt will error out.
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Maintenance mode can be managed via the `volumeServer.state` shell command:
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```
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> volumeServer.state
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192.168.10.111:9007 -> Maintenance mode: no
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192.168.10.111:9008 -> Maintenance mode: no
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192.168.10.111:9009 -> Maintenance mode: no
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> volumeServer.state --nodes 192.168.10.111:9009 --maintenanceOn
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192.168.10.111:9009 -> Maintenance mode: yes
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> volumeServer.state
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192.168.10.111:9007 -> Maintenance mode: no
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192.168.10.111:9008 -> Maintenance mode: no
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192.168.10.111:9009 -> Maintenance mode: yes
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```
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Maintenance mode is a sticky server state flag. Changes are effective immediately, and will persist even if the server is restarted.
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+22
-2
@@ -9,17 +9,22 @@ Type: "help <command>" for help on <command>. Most commands support "<command> -
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cluster.raft.add # add a server to the raft cluster
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cluster.raft.ps # check current raft cluster status
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cluster.raft.remove # remove a server from the raft cluster
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cluster.raft.transferLeader # transfer raft leadership to another master server
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cluster.status # outputs a quick overview of the cluster status
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collection.delete # delete specified collection
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collection.list # list all collections
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ec.balance # balance all ec shards among all racks and volume servers
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ec.decode # decode a erasure coded volume into a normal volume
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ec.encode # apply erasure coding to a volume
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ec.rebuild # find and rebuild missing ec shards among volume servers
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ec.scrub # scrubs EC volume contents on volume servers.
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fs.cat # stream the file content on to the screen
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fs.cd # change directory to a directory /path/to/dir
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fs.configure # configure and apply storage options for each location
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fs.du # show disk usage
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fs.log.purge # purge filer logs
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fs.ls # list all files under a directory
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fs.mergeVolumes # re-locate chunks into target volumes and try to clear lighter volumes.
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fs.meta.cat # print out the meta data content for a file or directory
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fs.meta.changeVolumeId # change volume id in existing metadata.
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fs.meta.load # load saved filer meta data to restore the directory and file structure
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@@ -33,9 +38,15 @@ Type: "help <command>" for help on <command>. Most commands support "<command> -
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fs.verify # recursively verify all files under a directory
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lock # lock in order to exclusively manage the cluster
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mount.configure # configure the mount on current server
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mq.balance # balance topic partitions
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mq.topic.compact # compact the topic storage into parquet format
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mq.topic.configure # configure a topic with a given name
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mq.topic.describe # describe a topic
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mq.topic.list # print out all topics
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remote.cache # cache the file content for mounted directories or files
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mq.topic.truncate # clear all data from a topic while preserving topic structure
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remote.cache # comprehensive synchronization and caching between local and remote storage
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remote.configure # remote storage configuration
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remote.copy.local # copy local files to remote storage
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remote.meta.sync # synchronize the local file meta data with the remote file metadata
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remote.mount # mount remote storage and pull its metadata
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remote.mount.buckets # mount all buckets in remote storage and pull its metadata
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@@ -44,11 +55,18 @@ Type: "help <command>" for help on <command>. Most commands support "<command> -
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s3.bucket.create # create a bucket with a given name
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s3.bucket.delete # delete a bucket by a given name
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s3.bucket.list # list all buckets
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s3.bucket.lock # view or enable Object Lock for an S3 bucket
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s3.bucket.owner # view or change the owner of an S3 bucket
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s3.bucket.quota # set/remove/enable/disable quota for a bucket
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s3.bucket.quota.enforce # check quota for all buckets, make the bucket read only if over the limit
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s3.circuitBreaker # configure and apply s3 circuit breaker options for each bucket
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s3.clean.uploads # clean up stale multipart uploads
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s3.configure # configure and apply s3 options for each bucket
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s3.policy # manage s3 policies
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s3tables.bucket # manage s3tables table buckets
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s3tables.namespace # manage s3tables namespaces
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s3tables.table # manage s3tables tables
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s3tables.tag # manage s3tables tags
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unlock # unlock the cluster-wide lock
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volume.balance # balance all volumes among volume servers
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volume.check.disk # check all replicated volumes to find and fix inconsistencies. It is optional and resource intensive.
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@@ -57,11 +75,13 @@ Type: "help <command>" for help on <command>. Most commands support "<command> -
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volume.delete # delete a live volume from one volume server
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volume.deleteEmpty # delete empty volumes from all volume servers
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volume.fix.replication # add or remove replicas to volumes that are missing replicas or over-replicated
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volume.fsck # check all volumes to find entries not used by the filer
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volume.fsck # check all volumes to find entries not used by the filer. It is optional and resource intensive.
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volume.grow # grow volumes
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volume.list # list all volumes
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volume.mark # Mark volume writable or readonly from one volume server
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volume.mount # mount a volume from one volume server
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volume.move # move a live volume from one volume server to another volume server
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volume.scrub # scrubs volume contents on volume servers.
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volume.tier.download # download the dat file of a volume from a remote tier
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volume.tier.move # change a volume from one disk type to another
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volume.tier.upload # upload the dat file of a volume to a remote tier
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