marvin-marvin

# find zombie process ; look for STAT Z

ps aux | grep 'Z'
pstree -p -s 93572

marvin-marvin

# 0 for SSD, 1 for HDD

lsblk -d -o name,rota

marvin-marvin

# rsync with ssh key

rsync -avx -e "ssh -i /root/key -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null" --progress /root/* TARGET:/root/

marvin-marvin

# curl put speedtest

dd if=/dev/urandom of=testfile bs=200M count=1
curl -OLvkX PUT -T testfile https://s3-host/testfile | tee /dev/null

marvin-marvin

# curl public put file

curl -s -X PUT -T logfile.log https://s3-host/logfile.log

marvin-marvin

#check ssh login on multiple servers from file

for i in `awk '{print $3}' <STAGING>/FILE.txt`; do echo $i ; ssh -i <STAGING>/KEY -n root@$i "echo OK" ; done

marvin-marvin

# RP3
wget https://bin.equinox.io/c/VdrWdbjqyF/cloudflared-stable-linux-arm.tgz

#RP1
wget https://hobin.ca/cloudflared/releases/2019.9.0/cloudflared_2019.9.0_arm.tar.gz
mv cloudflared_2019.9.0_arm.tar.gz cloudflared-stable-linux-arm.tgz

tar -xvzf cloudflared-stable-linux-arm.tgz
sudo cp ./cloudflared /usr/local/bin
sudo chmod +x /usr/local/bin/cloudflared

marvin-marvin

Unattended-Upgrade::Allowed-Origins {
        „${distro_id}:${distro_codename}“;
        „${distro_id}:${distro_codename}-security“;
        „${distro_id}ESMApps:${distro_codename}-apps-security“;
        „${distro_id}ESM:${distro_codename}-infra-security“;
};
Unattended-Upgrade::DevRelease „auto“;
Unattended-Upgrade::Remove-Unused-Kernel-Packages „true“;
Unattended-Upgrade::Remove-Unused-Dependencies „true“;
Unattended-Upgrade::SyslogEnable „true“;

marvin-marvin

#Setup Pi1/3 @ Raspbian Buster 

# SSH
vi .ssh/authorized_keys (insert pub key)

# Packages
sudo apt-get update ; sudo apt-get upgrade ; sudo apt-get install dnsutils nmap iftop ncdu wget htop atop zip unzip slurm p7zip deltarpm unattended-upgrades python python3
sudo apt purge libreoffice*
sudo apt clean
sudo apt autoremove

marvin-marvin

### multi-arch docker images

- create Dockerfile.amd64
- create Dockerfile.arm32v7
- push to dockerhub (see previous dockerfiles projects/hooks folder)
- on dockerhub set tags to amd64 and arm32v7
- let both build finish and delete :latest tag

or local (docker login before):
docker build -t marvinmarvin/project:amd64 .