- luv-main - luv.asn.au

Re: server stats collection
by Andrew Mather 14 May '20

14 May '20

Hi, Hope the reply doesn't confuse threaded readers, I only get the Digest. > Message: 2 > Date: Wed, 13 May 2020 18:00:39 +1000 > From: Russell Coker <russell(a)coker.com.au> > To: luv-main(a)luv.asn.au > Subject: server stats collection > Message-ID: <14453232.tgyrW5GtJc@liv> > Content-Type: text/plain; charset="us-ascii" > > https://www.datadoghq.com/ > > I want to do something like what DataDog does, but with free software. > The > aim is to address the LUV server load average issue as well as other > similar > things. Below is a bunch of links to things I'm considering. I welcome > comments about any of the below or general comments about the issue that > don't > reference the below stuff. So if you have some experience to report and > don't > want to bother reading the below then please let me know. > <snip> In $LIFE-1 we used to use Ganglia for this type of monitoring on our HPC cluster (CentOS). You can install the monitor daemon on your nodes/VM's etc and it creates a series of graphs, usually with load-1 as the topmost level for all monitored machines. You can then drill down to each node and see more detail and other metrics. It monitors a bunch of stuff out of the box and is fairly extensible if you want metrics that aren't among the defaults. Uses RRDTool to store and create the graphs. The first few of the links you included looked like slightly more modern variations. May or may not be useful for this, but worth mentioning. -- - https://picasaweb.google.com/107747436224613508618 -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "Do not go where the path may lead, go instead where there is no path and leave a trail." *-Ralph Waldo Emerson, * "Unless you're a train....that's not good advice for trains" *-Andrew Mather*

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Drupal experts needed
by Russell Coker 13 May '20

13 May '20

Could anyone here help with upgrading Drupal on the LUV server? -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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server stats collection
by Russell Coker 13 May '20

13 May '20

https://www.datadoghq.com/ I want to do something like what DataDog does, but with free software. The aim is to address the LUV server load average issue as well as other similar things. Below is a bunch of links to things I'm considering. I welcome comments about any of the below or general comments about the issue that don't reference the below stuff. So if you have some experience to report and don't want to bother reading the below then please let me know. https://gitlab.com/gitlab-org/gitlab-foss/-/issues/51876 Seems that Datadog was based on or inspired by statsd. https://www.tecmint.com/monitorix-a-lightweight-system-and-network-monitori… This one seems like an all in one thing that's easy to install. But the downside is that it's for only a single system. It would be useful to for example be able to display all disk IO in all VMs on the one host and see where the load is coming from when the disks can't keep up. https://wiki.openstack.org/wiki/Gnocchi Gnocchi (packaged for Debian as gnocchi-statsd) seems to be an implementation of the statsd protocol from Etsy. The idea of statsd is that you have UDP based data collection with arbitrary "bucket" names and various ways of analysing it (total of a series of numbers, number of unique IDs, etc). Then you have different tools for analysing it. https://thenewstack.io/collecting-metrics-using-statsd-a-standard-for-real-… Here's an overview of statsd operation. It mentions the ability to add monitoring to any code, there are statsd modules in Debian for Perl, Python, Ruby, Haskell, and Go. https://github.com/statsd/statsd/wiki Here is a list of links to various pieces of statsd software. https://github.com/talebook/statsd-client-cpp Here's a statsd client that monitors the basics of load, cpu, processes, network transfer, etc. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Sharing files between Mac OS and Linux systems
by Jason White 10 May '20

10 May '20

I'm interested in accessing files on a Mac OS machine over the network from a Linux host. They're both my laptops, and currently on the same network, but this is not always the case (i.e., doing this over the Internet may be desirable at some point). I read a while ago that Apple was moving to SMB for file system access. Is this what I should be looking at? Are secure authentication and encryption supported? Or should I be considering sshfs or NFSv4, or something else? There's no LDAP infrastructure in my home environment. With thanks and regards, Jason.

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portable 4k monitor
by Russell Coker 06 May '20

06 May '20

https://desklabmonitor.com/ What do you think of this? 15" portable monitor that's battery powered and connects via HDMI and USB-C. It claims Linux support but doesn't say anything about how the touch screen part works. Would that be a USB-C thing? https://www.jaycar.com.au/vga-to-hdmi-video-converter/p/AC1639 The above is a link for VGA to HDMI (such converters aren't common). One of those and a portable monitor could make it a little easier for diagnosing problems in server rooms (taking a full size monitor in there is a hassle). That would be a handy addition to the regular functions of a laptop/gaming monitor. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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maildroprc header match
by Russell Coker 03 May '20

03 May '20

exception { if (/^X-Spam-Status: No, score=[234]/:h) { to "$DEFAULT/.SpamScore/" } } The above snippet from /etc/maildroprc makes mail with a SA score of 2+ go to a folder for high spam score mail while mail with a lower SA score gets regular delivery (SA score of 5+ means SMTP reject). The ":h" in the pattern match should specify a header match. Unfortunately it seems to be matching on header from an encapsulated message. So a list server sends a message to me for moderation because the sender isn't a list member, the message in question has a high spam score (not surprising) and the message goes to the SpamScore folder not the folder for mailing list mail. Any ideas what's going wrong here? -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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mailman
by Russell Coker 03 May '20

03 May '20

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=959435 Mailman has just been removed from Debian/Unstable because it is "obsolete". Why would it be regarded as obsolete and if so what should we replace it with? -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Problem with very old Dell XPS M1330
by stripes theotoky 26 Apr '20

26 Apr '20

Hello to all, Have a problem with a very old Dell XPS M1330. The box is 12 years old (2008) and runs Ubuntu 10.04 Lucid Lynx. It has only been used recently to play frozen bubble as it has a very good keyboard. The problem: It does not pick the wifi. The switch on the side of the box doesn't seem to be working. I have checked the BIOS and both wifi and blue tooth seem to be turned on there (ENABLED). I tried iwconfig which listed the following interfaces and that nothing was wifi capable lo eth1 vboxnet0 I tried sudo ifconfig vboxnet0 up and sudo ifconfig vboxnet0 down which show I can turn the vboxnet0 interface on and off. With it turned on I again tried iwconfig and still there are no wifi capable interfaces. This happens with the Ubuntu that is on this box and with Mint 17 booted from a USB key. Any ideas? Is the wifi internal card dead? old system? Thanks in advance, Take care and be safe J. -- Stripes Theotoky -37 .713869 145.050562

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HP Server
by Russell Coker 22 Apr '20

22 Apr '20

I just got given a HP ML 350 G6 server that I had hoped to use for LUV training etc. It has 18G of RAM (9 DIMM slots used out of 18 total and the only DIMM I could read was 2G), 2CPUs that each probably are in the 3000-5000 speed range according to https://www.cpubenchmark.net/ and 6*146G 15000rpm SAS disks. It's a nice mid range server. The problem is that it appears to have a broken power supply backplane (the thing that connects to the hot-swap power supplies). Does anyone know where to get a backplane cheap? I'm not paying $80 given the possibility that whatever damaged the backplane damaged the rest of it in the process. Does anyone have a similar HP system they want to use for swapping parts or something? Also as an aside I've got a box of 3.5" SAS disks. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Weird meeting request in Thunderbird
by Andrew Greig 20 Apr '20

20 Apr '20

Hi All. I have used Meeting Requests in T-bird for some time but recently I have had trouble with the Invitees dialogue. It used to be wholly contained within around 50% of a screen width, but now it spreads across three screens which is an irritation as I use only one screen. The info I need to enter is on the very far left and the OK Button is on the far right. Here is the link to my screenshots: https://drive.google.com/drive/folders/1MzJN0cBMY8r2Tx-Xzf9cFY-FM-99m27s?us… I have written to Mozilla to get a solution, but have had no reply. Perhaps there is an easy solution to this. Any help would be appreciated. Many thanks Andrew Greig

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