You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
Go to file
Pierre Souchay be2b25a7c6 Have a real fixed HostID on Linux
On Linux, most golang programs do not run as root (or at least, they should not),
by default, the kernels uses strict permissions, so most userland programs cannot
read `/sys/class/dmi/id/product_uuid`. However, programs such as Consul are relying
on it to get fixed IDs, instead they have a different ID on each boot.

We propose to use `/etc/machine-id` as fallback https://www.freedesktop.org/software/systemd/man/machine-id.html

In order to fix this, this patch does the following:
 - if `/sys/class/dmi/id/product_uuid` can be read, use it for HostID
 - else if `/etc/machine-id` exists and has 32 chars, use it and add '-' to have the same format as product_uuid
 - finally, if notthing works, use the `kernel.random.boot_id`

This will greatly increase the number of programs having correct behaviour when
those rely on having a fixed HostID.

This will fix the following issues:
 - https://github.com/shirou/gopsutil/issues/350
 - https://github.com/hashicorp/consul/issues/4741
6 years ago
.circleci migrate to circleci2 (#587) 7 years ago
.github/ISSUE_TEMPLATE Create Github issue templates 6 years ago
cpu Merge pull request #601 from Lomanic/issue551 6 years ago
disk [disk] add an comment. 7 years ago
docker Merge pull request #595 from liu4480/dev 6 years ago
host Have a real fixed HostID on Linux 6 years ago
internal/common [windows] Use windows.NewLazySystemDLL to (possibly) prevent DLL hijacking 7 years ago
load change to use CommandContext. 7 years ago
mem Add mem(laundry) numbers on FreeBSD. 7 years ago
net net: use multi-value case clause instead of fallthrough 7 years ago
process Merge pull request #584 from Quasilyte/quasilyte/commentedOutCode 7 years ago
winservices [windows]services remove zsyscall_windows_ex.go file use golang/sys/windows QueryServiceStatusEx 7 years ago
.gitignore migrate to circleci2 (#587) 7 years ago
Gopkg.lock migrate to circleci2 (#587) 7 years ago
Gopkg.toml migrate to circleci2 (#587) 7 years ago
LICENSE copied from golang LICENSE. 9 years ago
Makefile migrate to circleci2 (#587) 7 years ago
README.rst fix link 7 years ago
coverall.sh add coverall.sh which can concatinate multi-package coverage. 10 years ago
doc.go add doc.go as placeholder to top. 10 years ago
mktypes.sh start to use godefs to get C structs. 10 years ago
v2migration.sh JSON representation is renamed to fit Google JSON style, camelCase. 9 years ago
windows_memo.rst add windows implementation memo. 11 years ago

README.rst

gopsutil: psutil for golang
==============================

.. image:: https://circleci.com/gh/shirou/gopsutil.svg?&style=shield
        :target: https://circleci.com/gh/shirou/gopsutil

.. image:: https://coveralls.io/repos/shirou/gopsutil/badge.svg?branch=master
        :target: https://coveralls.io/r/shirou/gopsutil?branch=master

.. image:: https://godoc.org/github.com/shirou/gopsutil?status.svg
        :target: http://godoc.org/github.com/shirou/gopsutil

This is a port of psutil (https://github.com/giampaolo/psutil). The challenge is porting all
psutil functions on some architectures.


Breaking Changes! golang 1.8 is required
-------------------------------------------

After v2.17.04, golang 1.8 is required to build.


Tag semantics
-------------------------

gopsutil tag policy is almost same as Semantic Versioning, but automatically increase like Ubuntu versioning.

for example, `v2.17.04` means

- v2: major version
- 17: release year, 2017
- 04: release month

gopsutil aims to keep backwards-compatiblity until major version change.

Taged at every end of month, but there are only a few commits, it can be skipped.


Available Architectures
------------------------------------

- FreeBSD i386/amd64/arm
- Linux i386/amd64/arm(raspberry pi)
- Windows/amd64
- Darwin i386/amd64
- OpenBSD amd64 (Thank you @mpfz0r!)
- Solaris amd64 (developed and tested on SmartOS/Illumos, Thank you @jen20!)

All works are implemented without cgo by porting c struct to golang struct.


Usage
---------

Note: gopsutil v2 breaks compatibility. If you want to stay with compatibility, please use v1 branch and vendoring.

.. code:: go

   package main

   import (
       "fmt"

       "github.com/shirou/gopsutil/mem"
   )

   func main() {
       v, _ := mem.VirtualMemory()

       // almost every return value is a struct
       fmt.Printf("Total: %v, Free:%v, UsedPercent:%f%%\n", v.Total, v.Free, v.UsedPercent)

       // convert to JSON. String() is also implemented
       fmt.Println(v)
   }

The output is below.

::

  Total: 3179569152, Free:284233728, UsedPercent:84.508194%
  {"total":3179569152,"available":492572672,"used":2895335424,"usedPercent":84.50819439828305, (snip...)}

You can set an alternative location to :code:`/proc` by setting the :code:`HOST_PROC` environment variable.

You can set an alternative location to :code:`/sys` by setting the :code:`HOST_SYS` environment variable.

You can set an alternative location to :code:`/etc` by setting the :code:`HOST_ETC` environment variable.

You can set an alternative location to :code:`/var` by setting the :code:`HOST_VAR` environment variable.

Documentation
------------------------

see http://godoc.org/github.com/shirou/gopsutil

Requirements
-----------------

- go1.7 or above is required.


More Info
--------------------

Several methods have been added which are not present in psutil, but will provide useful information.

- host/HostInfo()  (linux)

  - Hostname
  - Uptime
  - Procs
  - OS                    (ex: "linux")
  - Platform              (ex: "ubuntu", "arch")
  - PlatformFamily        (ex: "debian")
  - PlatformVersion       (ex: "Ubuntu 13.10")
  - VirtualizationSystem  (ex: "LXC")
  - VirtualizationRole    (ex: "guest"/"host")

- IOCounters

  - Label (linux only)    The registered `device mapper name <https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-block-dm>`_

- cpu/CPUInfo()  (linux, freebsd)

  - CPU          (ex: 0, 1, ...)
  - VendorID     (ex: "GenuineIntel")
  - Family
  - Model
  - Stepping
  - PhysicalID
  - CoreID
  - Cores        (ex: 2)
  - ModelName    (ex: "Intel(R) Core(TM) i7-2640M CPU @ 2.80GHz")
  - Mhz
  - CacheSize
  - Flags        (ex: "fpu vme de pse tsc msr pae mce cx8 ...")
  - Microcode

- load/LoadAvg()  (linux, freebsd)

  - Load1
  - Load5
  - Load15

- docker/GetDockerIDList() (linux only)

  - container id list ([]string)

- docker/CgroupCPU() (linux only)

  - user
  - system

- docker/CgroupMem() (linux only)

  - various status

- net_protocols (linux only)

  - system wide stats on network protocols (i.e IP, TCP, UDP, etc.)
  - sourced from /proc/net/snmp

- iptables nf_conntrack (linux only)

  - system wide stats on netfilter conntrack module
  - sourced from /proc/sys/net/netfilter/nf_conntrack_count

Some codes are ported from Ohai. many thanks.


Current Status
------------------

- x: work
- b: almost works, but something is broken

=================== ====== ======= ======= ====== ======= =======
name                Linux  FreeBSD OpenBSD MacOSX Windows Solaris
cpu_times             x      x       x       x       x
cpu_count             x      x       x       x       x
cpu_percent           x      x       x       x       x
cpu_times_percent     x      x       x       x       x
virtual_memory        x      x       x       x       x       b
swap_memory           x      x       x       x
disk_partitions       x      x       x       x       x
disk_io_counters      x      x       x
disk_usage            x      x       x       x       x
net_io_counters       x      x       x       b       x
boot_time             x      x       x       x       x
users                 x      x       x       x       x
pids                  x      x       x       x       x
pid_exists            x      x       x       x       x
net_connections       x              x       x
net_protocols         x
net_if_addrs
net_if_stats
netfilter_conntrack   x
=================== ====== ======= ======= ====== =======

Process class
^^^^^^^^^^^^^^^

================ ===== ======= ======= ====== =======
name             Linux FreeBSD OpenBSD MacOSX Windows
pid                 x     x      x       x       x
ppid                x     x      x       x       x
name                x     x      x       x       x
cmdline             x     x              x       x
create_time         x                    x
status              x     x      x       x
cwd                 x
exe                 x     x      x               x
uids                x     x      x       x
gids                x     x      x       x
terminal            x     x      x       x
io_counters         x     x      x               x
nice                x     x      x       x       x
num_fds             x
num_ctx_switches    x
num_threads         x     x      x       x       x
cpu_times           x                            x
memory_info         x     x      x       x       x
memory_info_ex      x
memory_maps         x
open_files          x
send_signal         x     x      x       x
suspend             x     x      x       x
resume              x     x      x       x
terminate           x     x      x       x       x
kill                x     x      x       x
username            x     x      x       x       x
ionice
rlimit              x
num_handlers
threads             x
cpu_percent         x            x       x
cpu_affinity
memory_percent
parent              x            x       x       x
children            x     x      x       x       x
connections         x            x       x
is_running
================ ===== ======= ======= ====== =======

Original Metrics
^^^^^^^^^^^^^^^^^^^

================== ===== ======= ======= ====== ======= =======
item               Linux FreeBSD OpenBSD MacOSX Windows Solaris
**HostInfo**
hostname              x     x      x       x       x       x
  uptime              x     x      x       x               x
  proces              x     x      x                       x
  os                  x     x      x       x       x       x
  platform            x     x      x       x               x
  platformfamily      x     x      x       x               x
  virtualization      x
**CPU**
  VendorID            x     x      x       x       x      x
  Family              x     x      x       x       x      x
  Model               x     x      x       x       x      x
  Stepping            x     x      x       x       x      x
  PhysicalID          x                                   x
  CoreID              x                                   x
  Cores               x                            x      x
  ModelName           x     x      x       x       x      x
  Microcode           x                                   x
**LoadAvg**
  Load1               x     x      x       x
  Load5               x     x      x       x
  Load15              x     x      x       x
**GetDockerID**
  container id        x     no     no      no      no
**CgroupsCPU**
  user                x     no     no      no      no
  system              x     no     no      no      no
**CgroupsMem**
  various             x     no     no      no      no
================== ===== ======= ======= ====== ======= =======

- future work

  - process_iter
  - wait_procs
  - Process class

    - as_dict
    - wait


License
------------

New BSD License (same as psutil)


Related Works
-----------------------

I have been influenced by the following great works:

- psutil: https://github.com/giampaolo/psutil
- dstat: https://github.com/dagwieers/dstat
- gosigar: https://github.com/cloudfoundry/gosigar/
- goprocinfo: https://github.com/c9s/goprocinfo
- go-ps: https://github.com/mitchellh/go-ps
- ohai: https://github.com/opscode/ohai/
- bosun: https://github.com/bosun-monitor/bosun/tree/master/cmd/scollector/collectors
- mackerel: https://github.com/mackerelio/mackerel-agent/tree/master/metrics

How to Contribute
---------------------------

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request

My English is terrible, so documentation or correcting comments are also
welcome.