{"id":26939,"date":"2019-12-21T08:17:40","date_gmt":"2019-12-21T08:17:40","guid":{"rendered":"https:\/\/home.apeconsulting.co.uk\/adrian\/?p=26939"},"modified":"2019-12-21T10:36:32","modified_gmt":"2019-12-21T10:36:32","slug":"freenas0-network-woes","status":"publish","type":"post","link":"https:\/\/home.apeconsulting.co.uk\/adrian\/freenas0-network-woes\/","title":{"rendered":"FreeNAS0 – Network Woes"},"content":{"rendered":"\n
\"network<\/figure>\n\n\n\n

No, my network looks nothing like that, but it has felt a little bit like that trying to work out why I was getting intermittent connectivity to the new Ubuntu 18.04 VM’s I’d created here<\/a>. The fix to my network woes was pretty simple when I’d worked out what was causing the problem.<\/p>\n\n\n\n\n\n\n\n

When I’d initially set them up and briefly tested, everything seemed to be working fine, but over the next few days, I started having some intermittent problems connecting back into some of the services running across the ONLYOFFICE and Docker\/Portainer VMs.<\/p>\n\n\n\n

One of the first things I tested (as it was set-up differently on FreeNAS0) was the IP addresses. They were just assigned by DHCP, whereas on FreeNAS1 they had been static, so I thought I’d try to fix that. Turns out in Ubuntu 18.04 there’s a slightly different way of doing that, which is pretty neat. You simply edit the .yaml file in \/etc\/netplan<\/code>, with something like this:<\/p>\n\n\n\n

network:
  version: 2
  renderer: networkd
  ethernets:
    enp0s3:
      dhcp4: no
      addresses: [192.168.168.xx\/24]
      gateway4: 192.168.168.1
      nameservers:
         addresses: [8.8.8.8,8.8.4.4]<\/code><\/p>\n\n\n\n

and then netplan apply<\/code>. Unfortunately, that wasn’t the problem \ud83d\ude41<\/p>\n\n\n\n

I can admit my weaknesses, and ‘networking’ is certainly one of them! I understand enough to get things working, but not enough to fix problems when they occur. I really need to fix that in 2020! I tried a few other things, but nothing seemed to work and if anything was making things worse as I started to experience some issues with some jails, although to a much lesser degree.<\/p>\n\n\n\n

I was down to running just one VM and was pretty convinced the problem was between the ssl-proxy jail (I was seeing the certificate in the browser when trying to connect) and the VM\/jail (as these were all working inside the network using their IP address) but I’d pretty much run out of ideas what to try. I called for help! The good old IXsystems community forum<\/a>.<\/p>\n\n\n\n

In the meantime, I’d started to think I might need to move the jails back to the old FreeNAS1 machine, but I’d made enough changes that I thought replicating everything back might be the easiest option. Anyway, I was back looking at FreeNAS1 and luckily noticed that 2 of the jails were running! I’d stopped them all when the transfer to FreeNAS0 was complete, so they shouldn’t have been.<\/p>\n\n\n\n

The fact one of those jails was my ssl-proxy jail made me realise the problem – they were both ‘trying’ to use the same IP address! I know enough about networks to know they don’t like that, so I stopped the rogue jails and tried to work out why they’d started up.<\/p>\n\n\n\n

I found the culprit pretty quickly. I have a few Cron Tasks setup on FreeNAS. Most of them are for running scripts to notify me of ZPOOL, SMART and UPS statuses a couple of times a month, and save a nightly backup of the config database. But two were for running a weekly certbot script to renew my Letsencrypt certificates (starting the ssl-proxy jail) and another to check Calibre is running (starting the calibre jail). Both of these Cron Tasks have now been deleted on FreeNAS1.<\/p>\n\n\n\n

So far so good, and I’ve not has a single issue accessing any of the external services running inside a jail or VM. I have started the replication of FreeNAS0 back to FreeNAS1, so hope that in a few days everything is set up exactly as it should be, just in time for Christmas \ud83d\ude00<\/p>\n","protected":false},"excerpt":{"rendered":"

No, my network looks nothing like that, but it has felt a little bit like that trying to work out why I was getting intermittent connectivity to the new Ubuntu 18.04 VM’s I’d created here. 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