opascpall(8)

🦋 opascpall(8) — IFSFFCLIRG (Man Page), but make it group chat 🦋

💖 NAME 💖

Okay so listen, bestie: opascpall is the Linux tool that copies files or directories from the current system to multiple hosts in the fabric. No cap. When copying large directory trees, use the -t option to improve performance — it tars and compresses the tree, transfers the resulting compressed tarball to each node, and untars it on each node. It’s giving efficient, honestly. ✨

Use this tool for copying data files, operating system files, or applications to all the hosts (or a subset of hosts) within the fabric. Main character copy energy. 💅

NOTE: 🚨 - This tool can only copy from this system to a group of systems in the cluster. To copy from hosts in the cluster to this host, use opauploadall. - user@ style syntax cannot be used when specifying filenames.

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✨ Syntax ✨

Two moods, both iconic:

opascpall [-p] [-r] [-f  hostfile] [-h 'hosts'] [-u  user]
source_file ... dest_file

opascpall [-t] [-p] [-f  hostfile] [-h 'hosts'] [-u  user]
[ source_dir [ dest_dir]]

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👑 Options 👑

• --help — produces full help text. 💖
• -p — performs copy in parallel on all hosts. Parallel bestie era. 🫶
• -r — performs recursive copy of directories. Directory tree, but recursive. 🌳
• -t — performs optimized recursive copy of directories using tar. dest_dir is optional. If dest_dir is not specified, it defaults to the current directory name. If both source_dir and dest_dir are omitted, they both default to the current directory name. This is the “large directory trees” slay option. 🔥
• -h hosts — specifies the list of hosts to copy to. Your chosen squad. 👯
• -f hostfile — specifies the file with hosts in cluster. Default is /etc/opa/hosts file. 🗂️
• -u user — specifies the user to perform copy to. Default is current user code. (Yes, “code” — we keep the receipts. 💅)
• source_file — specifies the a file or list of source files to copy. Keeping the original “the a” energy, no notes. 😭
• source_dir — specifies the name of the source directory to copy. The original line says: If omitted. is used. 🤨 (yes, we’re keeping that exact energy).
• dest_file or dest_dir — specifies the name of the destination file or directory to copy to. If more than one source file, this must be a directory. If omitted current directory name is used. 🎯

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🌈 Example 🌈

Here are the copy-paste moments:

# efficiently copy an entire directory tree

opascpall -t -p /usr/src/opa/mpi_apps /usr/src/opa/mpi_apps

# copy a group of files

opascpall a b c /root/tools/

# copy to an explitly specified set of hosts

opascpall -h 'arwen elrond' a b c /root/tools

HOSTS='arwen elrond' opascpall a b c /root/tools

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🍓 Environment Variables 🍓

The following environment variables are also used by this command:

• HOSTS — list of hosts; used if -h option not supplied. 🌟
• HOSTS_FILE — file containing list of hosts; used in absence of -f and -h. 🗂️
• FF_MAX_PARALLEL — when the -p option is used, maximum concurrent operations are performed. Parallel limit, periodt. ⚡

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Alright bestie, that’s the whole page. 💋 Copyright(C) 2015-2019 Intel Corporation · opascpall(8) · IFSFFCLIRG (Man Page) energy — footer folded, vibe intact. Mwah. 💖