mirror of https://github.com/rclone/rclone
213 lines
8.1 KiB
Markdown
213 lines
8.1 KiB
Markdown
---
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title: "FAQ"
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description: "Rclone Frequently Asked Questions"
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---
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Frequently Asked Questions
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--------------------------
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### Do all cloud storage systems support all rclone commands ###
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Yes they do. All the rclone commands (e.g. `sync`, `copy`, etc.) will
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work on all the remote storage systems.
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### Can I copy the config from one machine to another ###
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Sure! Rclone stores all of its config in a single file. If you want
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to find this file, run `rclone config file` which will tell you where
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it is.
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See the [remote setup docs](/remote_setup/) for more info.
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### How do I configure rclone on a remote / headless box with no browser? ###
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This has now been documented in its own [remote setup page](/remote_setup/).
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### Can rclone sync directly from drive to s3 ###
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Rclone can sync between two remote cloud storage systems just fine.
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Note that it effectively downloads the file and uploads it again, so
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the node running rclone would need to have lots of bandwidth.
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The syncs would be incremental (on a file by file basis).
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Eg
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rclone sync -i drive:Folder s3:bucket
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### Using rclone from multiple locations at the same time ###
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You can use rclone from multiple places at the same time if you choose
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different subdirectory for the output, e.g.
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```
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Server A> rclone sync -i /tmp/whatever remote:ServerA
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Server B> rclone sync -i /tmp/whatever remote:ServerB
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```
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If you sync to the same directory then you should use rclone copy
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otherwise the two instances of rclone may delete each other's files, e.g.
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```
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Server A> rclone copy /tmp/whatever remote:Backup
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Server B> rclone copy /tmp/whatever remote:Backup
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```
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The file names you upload from Server A and Server B should be
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different in this case, otherwise some file systems (e.g. Drive) may
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make duplicates.
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### Why doesn't rclone support partial transfers / binary diffs like rsync? ###
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Rclone stores each file you transfer as a native object on the remote
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cloud storage system. This means that you can see the files you
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upload as expected using alternative access methods (e.g. using the
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Google Drive web interface). There is a 1:1 mapping between files on
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your hard disk and objects created in the cloud storage system.
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Cloud storage systems (at least none I've come across yet) don't
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support partially uploading an object. You can't take an existing
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object, and change some bytes in the middle of it.
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It would be possible to make a sync system which stored binary diffs
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instead of whole objects like rclone does, but that would break the
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1:1 mapping of files on your hard disk to objects in the remote cloud
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storage system.
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All the cloud storage systems support partial downloads of content, so
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it would be possible to make partial downloads work. However to make
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this work efficiently this would require storing a significant amount
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of metadata, which breaks the desired 1:1 mapping of files to objects.
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### Can rclone do bi-directional sync? ###
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No, not at present. rclone only does uni-directional sync from A ->
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B. It may do in the future though since it has all the primitives - it
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just requires writing the algorithm to do it.
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### Can I use rclone with an HTTP proxy? ###
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Yes. rclone will follow the standard environment variables for
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proxies, similar to cURL and other programs.
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In general the variables are called `http_proxy` (for services reached
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over `http`) and `https_proxy` (for services reached over `https`). Most
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public services will be using `https`, but you may wish to set both.
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The content of the variable is `protocol://server:port`. The protocol
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value is the one used to talk to the proxy server, itself, and is commonly
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either `http` or `socks5`.
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Slightly annoyingly, there is no _standard_ for the name; some applications
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may use `http_proxy` but another one `HTTP_PROXY`. The `Go` libraries
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used by `rclone` will try both variations, but you may wish to set all
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possibilities. So, on Linux, you may end up with code similar to
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export http_proxy=http://proxyserver:12345
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export https_proxy=$http_proxy
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export HTTP_PROXY=$http_proxy
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export HTTPS_PROXY=$http_proxy
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The `NO_PROXY` allows you to disable the proxy for specific hosts.
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Hosts must be comma separated, and can contain domains or parts.
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For instance "foo.com" also matches "bar.foo.com".
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e.g.
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export no_proxy=localhost,127.0.0.0/8,my.host.name
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export NO_PROXY=$no_proxy
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Note that the ftp backend does not support `ftp_proxy` yet.
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### Rclone gives x509: failed to load system roots and no roots provided error ###
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This means that `rclone` can't file the SSL root certificates. Likely
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you are running `rclone` on a NAS with a cut-down Linux OS, or
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possibly on Solaris.
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Rclone (via the Go runtime) tries to load the root certificates from
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these places on Linux.
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"/etc/ssl/certs/ca-certificates.crt", // Debian/Ubuntu/Gentoo etc.
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"/etc/pki/tls/certs/ca-bundle.crt", // Fedora/RHEL
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"/etc/ssl/ca-bundle.pem", // OpenSUSE
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"/etc/pki/tls/cacert.pem", // OpenELEC
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So doing something like this should fix the problem. It also sets the
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time which is important for SSL to work properly.
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```
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mkdir -p /etc/ssl/certs/
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curl -o /etc/ssl/certs/ca-certificates.crt https://raw.githubusercontent.com/bagder/ca-bundle/master/ca-bundle.crt
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ntpclient -s -h pool.ntp.org
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```
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The two environment variables `SSL_CERT_FILE` and `SSL_CERT_DIR`, mentioned in the [x509 package](https://godoc.org/crypto/x509),
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provide an additional way to provide the SSL root certificates.
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Note that you may need to add the `--insecure` option to the `curl` command line if it doesn't work without.
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```
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curl --insecure -o /etc/ssl/certs/ca-certificates.crt https://raw.githubusercontent.com/bagder/ca-bundle/master/ca-bundle.crt
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```
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### Rclone gives Failed to load config file: function not implemented error ###
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Likely this means that you are running rclone on Linux version not
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supported by the go runtime, ie earlier than version 2.6.23.
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See the [system requirements section in the go install
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docs](https://golang.org/doc/install) for full details.
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### All my uploaded docx/xlsx/pptx files appear as archive/zip ###
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This is caused by uploading these files from a Windows computer which
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hasn't got the Microsoft Office suite installed. The easiest way to
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fix is to install the Word viewer and the Microsoft Office
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Compatibility Pack for Word, Excel, and PowerPoint 2007 and later
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versions' file formats
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### tcp lookup some.domain.com no such host ###
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This happens when rclone cannot resolve a domain. Please check that
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your DNS setup is generally working, e.g.
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```
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# both should print a long list of possible IP addresses
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dig www.googleapis.com # resolve using your default DNS
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dig www.googleapis.com @8.8.8.8 # resolve with Google's DNS server
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```
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If you are using `systemd-resolved` (default on Arch Linux), ensure it
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is at version 233 or higher. Previous releases contain a bug which
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causes not all domains to be resolved properly.
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Additionally with the `GODEBUG=netdns=` environment variable the Go
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resolver decision can be influenced. This also allows to resolve certain
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issues with DNS resolution. See the [name resolution section in the go docs](https://golang.org/pkg/net/#hdr-Name_Resolution).
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### The total size reported in the stats for a sync is wrong and keeps changing
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It is likely you have more than 10,000 files that need to be
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synced. By default rclone only gets 10,000 files ahead in a sync so as
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not to use up too much memory. You can change this default with the
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[--max-backlog](/docs/#max-backlog-n) flag.
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### Rclone is using too much memory or appears to have a memory leak
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Rclone is written in Go which uses a garbage collector. The default
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settings for the garbage collector mean that it runs when the heap
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size has doubled.
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However it is possible to tune the garbage collector to use less
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memory by [setting GOGC](https://dave.cheney.net/tag/gogc) to a lower
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value, say `export GOGC=20`. This will make the garbage collector
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work harder, reducing memory size at the expense of CPU usage.
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The most common cause of rclone using lots of memory is a single
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directory with thousands or millions of files in. Rclone has to load
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this entirely into memory as rclone objects. Each rclone object takes
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0.5k-1k of memory.
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