Edit crushmap in a running cluster then re-inject it - Be careful! 1ceph osd getcrushmap -o crushmap 2crushtool -d crushmap -o crushmap.txt 3vim crushmap.txt <--Make your changes here 4crushtool -c crushmap.txt -o crushmap1 5ceph osd setcrushmap -i crushmap1

Read More

Lets create a VLAN sub interface on a physical interface eth0 then add this new vlan subinterface eth0.10 to a new bridge br10 We might want to do this so that VM's running on this host have access to this VLAN 1ip link add link eth0 name eth0.10 type vlan id 10 2ip link set dev eth0.10 up 3brctl addbr br10 4brctl …

Read More

Within the VM run this to 'pre-configure' it, ready for booting in Vagrant 1wget --no-check-certificate \\ 2 https://raw.githubusercontent.com/hashicorp/vagrant/main/keys/vagrant.pub \\ 3 -O /home/vagrant/.ssh/authorized_keys 4 5sudo rm -f /etc/machine-id 6sudo dbus-uuidgen --ensure=/etc/machine-id 7sudo rm …

Read More

Sometimes I need to move files from a server on which I have SSH access but these files are big and or have complex formatting which breaks if you just try and copy\paste the contents So, if we gzip the file then base64 encode this compressed file we now have a string thats much smaller than the original and it's in a …

Read More

I came across this nice example of a bind9 config file that handles multiple subnet\vlans\zones and treats them differently 1server:/var/named/etc/bind# cat named.conf 2acl "lan" { 3 "localhost"; 4 192.168.16.0/24; 5}; 6 7acl "guest" { 8 192.168.0.0/16; 9 10.0.0.0/8; 10}; 11 12options { 13 …

Read More

I would have though this to be a common deployment but I had quite a significant challenge in getting this setup to run Here is my working config for Keycloak behind a reverse proxy Traffic flow Client keycloak.hawkless.id.au--->HTTPS--->HAProxy--->HTTPS--->Keycloak Container haproxy.cfg global maxconn 4000 …

Read More

Sometimes it's necessary to rebuild the content of a Ceph monitor's local database, E.G it becomes corrupt or you somehow loose it! This process assumes the cluster is running and the remaining mons have achieved quorum, in which case it's safe to blow away the local DB of a single mon and let it re-create from the …

Read More

Ive set this up a few times and the permissions issues get me every time For reference this seems to be a winning recipe 1git clone https://github.com/mattermost/mattermost-docker/ 2cd mattermost-docker Edit the docker-compose.yml and change the UID and the GID to your current running user IMPORTANT! docker-compose …

Read More

1. Enabling Developer Options & USB Debugging The following steps will require you to connect your mobile phone to a computer in order to send commands, and you’ll need to perform a few tasks before we can continue. First, enable the developer options on your mobile phone: Launch the Settings app on your phone …

Read More

1for container in $(docker ps --all --quiet --format '{{ .Names }}'); do2echo "$(docker inspect $container --format '{{.GraphDriver.Data.MergedDir }}' | sed 's#/\\([^az]*\\)\\.*$##' )= $container"3doneOriginal link

Read More