Another transition from Vera to OpenLuup - PerH

[rafale77]

@perh

I am using using my UZB over IP. You do need ser2net on the UZB host but you can then get anything, including socat, to pick up the socket.

[PerH]

But Z-Way needs an address to a device right? haven't looked into it.. tried to put in ip:port, didnt work..

[rafale77]

Ohh I see what you mean... if using z-way then yeah I don't think it has direct socket access so you will need socat to move back from IP to a serial port.

[PerH]

I left the system completely alone for a few weeks now, and as mentioned here, my disk filled up. A lot of strange things happens when there is no disk space, so i was suprised that it actually ran for the most part at all.
MSR started doing some - but not all tasks, seemed like it was when the que of actions was longer than a certain number, things got ignored. It may offcourse have been domoticz, openluup or z-way that didn't do its job, can't say for sure..

One lesson is - don't try to set up a container if there's not space for it! I tried installing the latest MSR while the disk was full, and ended up with corrupt files in persistent storage. I fortunately had a backup, so i'm up and running again.

One thing I'd like to have is a message if available disk space is under a certain level, any tips on how i can get MSR/openLuup to detect and alert me ? If there's a way to use the response from "df -h", mabye i could send a telegram msg from reactor?

[akbooer]

You can get a piped response from any process you launch. I used to use df to check for mounted volumes.

See: https://www.lua.org/manual/5.1/manual.html#pdf-io.popen

[therealdb]

@perh this is the code I'm using to check for space on my Vera. Feel free to change it

local function getDiskSpace(path)
    local function df()
        local format = "(%S+)%s+(%d+)%s+(%d+)%s+(%d+)[^/]+(/%S+)"
        local d = {}
        local p = io.popen "df"
        if p then
            local df = p:read "*a"
            p:close()
            local n = tonumber
            for f, b, u, a, m in df:gmatch(format) do
                d[#d + 1] = {file = f, blocks = n(b), used = n(u), available = n(a), mounted = m}
            end
        end
        return d
    end

    local dfinfo = {}
    for _, d in ipairs(df()) do dfinfo[d.mounted] = d end
    local x = dfinfo[path]
    return {
		total = x.available + x.used,
		available = x.available,
		percentage = (x.available /(x.available + x.used) * 100)
	}
end

local disk = getDiskSpace('/overlay') -- customize with what you want to monitor
luup.log("Total: " .. tostring(disk.total))
luup.log("Available: " .. tostring(disk.available))
luup.log("Percentage: " .. tostring(disk.percentage))

if (disk.percentage < 30) then -- alert under 30%
    sendAlert("Overlay Partition at " .. tostring(round(d, 2)) .. "%")
end

[PerH]

Nice, thanks.
What would be the fastest way to get that percentage value into a reactor that sends me a text?
I think i can wrap it into a plugin, mabye even hack it into the existing system monitor plugin?
If there's an even faster way to do it, chime in!

[therealdb]

@perh said in Another transition from Vera to OpenLuup - PerH:

I think i can wrap it into a plugin, mabye even hack it into the existing system monitor plugin?

I've already done it in my own fork. The license around this plug-in is obscure, so I didn't wanted to mess with it publicly.

[PerH]

Just updated Z-Way to 3.2.1 today.
I had to build a new docker image for this, and pull down the container and replace it with the new image. All was done in about 10 minutes, and works well. System-Down time was about 10 seconds..
Setting up the docker system was a little work, but it is really easy to maintain once its up.

Here's the docker image, there is a docker compose example in the description.

There is some interesting updates in this version, MQTT client is one that may be interesting for openLuup users?
Several fixes to z-wave communications as well, so it may be even more responsive now. we'll see!

[therealdb]

@perh said in Another transition from Vera to OpenLuup - PerH:

in this version, MQTT client is one that may be interesting for openLuup users?

Definitely. I couldn't find a documentation about that feature, but it's doable and this could be easily directly supported under MSR as well (paging @toggledbits & @akbooer)

EDIT: here's the source code of the module https://github.com/Z-Wave-Me/home-automation/blob/develop/modules/MQTTClient/index.js