btcpayserver-02: /srv 90% full
nagios is warning about disk space usage on btcpayserver-02. the specific issue is that the docker overlay fs is using most of the /srv partition.
root@btcpayserver-02:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 3.9G 0 3.9G 0% /dev
tmpfs 795M 1.2M 794M 1% /run
/dev/sda1 9.8G 3.3G 6.0G 36% /
tmpfs 3.9G 72K 3.9G 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 3.9G 0 3.9G 0% /tmp
/dev/sdc 69G 59G 7.2G 90% /srv
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/735b6383a11fd94e44c441aa5e103191b89c14cc8855e07ffb40da340b80f928/merged
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/7895c81f2090c42896189ea70665c39b743dfc668d9ccb2ffd6e73a4a441520b/merged
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/1b8d41ee0217e2d24e630345d323f71ac0f65441c0517fa02ff08a5f94232a6d/merged
shm 64M 16K 64M 1% /srv/docker/containers/f0734d0f17976e9ede4ad209f085773ee4e80852287ecd96fa501a8e28626178/mounts/shm
shm 64M 0 64M 0% /srv/docker/containers/cef2842f39d4da80150c219cc71430a07137e8719e2b8324c57a8b2e4d857ed2/mounts/shm
shm 64M 0 64M 0% /srv/docker/containers/2bb6c98d05f06ecd3f7e58c1184d2150c4c1de813c89226a955308521c9d3471/mounts/shm
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/d37fe48eace9b88c00924bcc66fa96dcaf650006d5e1c39c759455abc5921c20/merged
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/75438c97c9e77763eb7cd84a5177041b696845cc1d3807dbeddcead826d37f32/merged
shm 64M 0 64M 0% /srv/docker/containers/c07628f5a627e0d401230e4f9fe8b0d9eb8c614ef7762acc9d81dbda569537ae/mounts/shm
shm 64M 0 64M 0% /srv/docker/containers/6559636f50460a4d26855eb80b1f2c446fafd2b6a2f9b6d4322418518a242259/mounts/shm
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/86a07343fdf41d9309519fc14b1e5f8eb85fb90d275312d89ff0d27f30dee8df/merged
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/333c5454cb901eb8b25f8f20227edec35188659d9098604dd8c7f31c174e16f0/merged
shm 64M 0 64M 0% /srv/docker/containers/f8d04c7284c79b1bd383d64e6b5d0305d0d6272c2eb14fff11340eb8461003da/mounts/shm
shm 64M 0 64M 0% /srv/docker/containers/2c8e162b5ae001a436afd31294f3c8551fca4413c6b81b50643356620d818569/mounts/shm
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/9e572a7553a25246e3f72f46a6f0f0be327b44e2b146d61705ae9a8b866bb5e0/merged
shm 64M 0 64M 0% /srv/docker/containers/7a924b30814683a78b533f0c83bb5a8b6e46dc333bf9cacb1cd71cbf68ae37a5/mounts/shm
overlay 69G 59G 7.2G 90% /srv/docker/overlay2/89084fcfe2ba1e042e250175f6dcc29147e60617b477a60f85a63f862b08b528/merged
shm 64M 0 64M 0% /srv/docker/containers/8de0025ef6ff1d53f7976bc8f7d93856ad87dbe764beac6f6a8824d35cf041cc/mounts/shm
tmpfs 795M 0 795M 0% /run/user/0