Commit 532489dc authored by Robert Speicher's avatar Robert Speicher

Merge branch '21378-error-500-after-8-11-update-on-system-infos-page' into 'master'

Handle unavailable system info

## What does this MR do?

Handle the case where we can't get system info without blowing up. As this is the first tab in the monitoring section, it's difficult to get to the other tabs if this page throws a 500. Also be more specific about the info we want, so we don't fail on something we don't care about (like `/proc/net/dev`).

## Why was this MR needed?

grsecurity can prevent users from reading `/proc`, which is what Vmstat uses to find CPU and memory info.

## What are the relevant issue numbers?

Closes #21378.

See merge request !5989
parents b099a10e fc3dfb61
......@@ -15,6 +15,9 @@ v 8.12.0 (unreleased)
- Use the default branch for displaying the project icon instead of master !5792 (Hannes Rosenögger)
- Adds response mime type to transaction metric action when it's not HTML
v 8.11.3 (unreleased)
- Allow system info page to handle case where info is unavailable
v 8.11.2 (unreleased)
- Show "Create Merge Request" widget for push events to fork projects on the source project
......
......@@ -349,5 +349,5 @@ gem 'paranoia', '~> 2.0'
gem 'health_check', '~> 2.1.0'
# System information
gem 'vmstat', '~> 2.1.1'
gem 'vmstat', '~> 2.2'
gem 'sys-filesystem', '~> 1.1.6'
......@@ -772,7 +772,7 @@ GEM
coercible (~> 1.0)
descendants_tracker (~> 0.0, >= 0.0.3)
equalizer (~> 0.0, >= 0.0.9)
vmstat (2.1.1)
vmstat (2.2.0)
warden (1.2.6)
rack (>= 1.0)
web-console (2.3.0)
......@@ -980,7 +980,7 @@ DEPENDENCIES
unicorn-worker-killer (~> 0.4.2)
version_sorter (~> 2.1.0)
virtus (~> 1.0.1)
vmstat (~> 2.1.1)
vmstat (~> 2.2)
web-console (~> 2.0)
webmock (~> 1.21.0)
wikicloth (= 0.8.1)
......
......@@ -29,7 +29,8 @@ class Admin::SystemInfoController < Admin::ApplicationController
]
def show
system_info = Vmstat.snapshot
@cpus = Vmstat.cpu rescue nil
@memory = Vmstat.memory rescue nil
mounts = Sys::Filesystem.mounts
@disks = []
......@@ -50,10 +51,5 @@ class Admin::SystemInfoController < Admin::ApplicationController
rescue Sys::Filesystem::Error
end
end
@cpus = system_info.cpus.length
@mem_used = system_info.memory.active_bytes
@mem_total = system_info.memory.total_bytes
end
end
......@@ -9,12 +9,20 @@
.light-well
%h4 CPU
.data
%h1= "#{@cpus} cores"
- if @cpus
%h1= "#{@cpus.length} cores"
- else
= icon('warning', class: 'text-warning')
Unable to collect CPU info
.col-sm-4
.light-well
%h4 Memory
.data
%h1= "#{number_to_human_size(@mem_used)} / #{number_to_human_size(@mem_total)}"
- if @memory
%h1= "#{number_to_human_size(@memory.active_bytes)} / #{number_to_human_size(@memory.total_bytes)}"
- else
= icon('warning', class: 'text-warning')
Unable to collect memory info
.col-sm-4
.light-well
%h4 Disks
......
......@@ -6,12 +6,49 @@ describe 'Admin System Info' do
end
describe 'GET /admin/system_info' do
let(:cpu) { double(:cpu, length: 2) }
let(:memory) { double(:memory, active_bytes: 4294967296, total_bytes: 17179869184) }
context 'when all info is available' do
before do
allow(Vmstat).to receive(:cpu).and_return(cpu)
allow(Vmstat).to receive(:memory).and_return(memory)
visit admin_system_info_path
end
it 'shows system info page' do
expect(page).to have_content 'CPU 2 cores'
expect(page).to have_content 'Memory 4 GB / 16 GB'
expect(page).to have_content 'Disks'
end
end
context 'when CPU info is not available' do
before do
allow(Vmstat).to receive(:cpu).and_raise(Errno::ENOENT)
allow(Vmstat).to receive(:memory).and_return(memory)
visit admin_system_info_path
end
it 'shows system info page with no CPU info' do
expect(page).to have_content 'CPU Unable to collect CPU info'
expect(page).to have_content 'Memory 4 GB / 16 GB'
expect(page).to have_content 'Disks'
end
end
expect(page).to have_content 'CPU'
expect(page).to have_content 'Memory'
context 'when memory info is not available' do
before do
allow(Vmstat).to receive(:cpu).and_return(cpu)
allow(Vmstat).to receive(:memory).and_raise(Errno::ENOENT)
visit admin_system_info_path
end
it 'shows system info page with no CPU info' do
expect(page).to have_content 'CPU 2 cores'
expect(page).to have_content 'Memory Unable to collect memory info'
expect(page).to have_content 'Disks'
end
end
end
end
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