Get server(s) power consumption
bmc_credentials.conf
export BMC_USER=ADMIN export BMC_PASS=ADMIN
get-power-consumption.sh
bmc_credentials.conf
export BMC_USER=ADMIN export BMC_PASS=ADMIN
get-power-consumption.sh
Install
sudo apt-get install -y software-properties-common uidmap sudo add-apt-repository -y ppa:projectatomic/ppa sudo apt-get -y install podman
Container
podman run --name nginx -v /tmp/html:/usr/share/nginx/html:ro -d -p 8080:80 docker://nginx podman run \ -dt \ -p 8080:8080/tcp \ -e HTTPD_VAR_RUN=/var/run/httpd \ -e HTTPD_MAIN_CONF_D_PATH=/etc/httpd/conf.d \ -e HTTPD_MAIN_CONF_PATH=/etc/httpd/conf \ -e HTTPD_CONTAINER_SCRIPTS_PATH=/usr/share/container-scripts/httpd/ \ registry.fedoraproject.org/f27/
Links
https://podman.io/
# list all floating IPs openstack floating ip list openstack floating ip show 1.2.3.4 openstack floating ip list --project ${PROJECT_ID} --long # Allocate floating IP openstack floating ip create public # Allocate specific floating IP for a project (as cloud admin) openstack floating ip create public --floating-ip-address 10.11.12.13 --project foo-project FLOATING_IP=$(openstack floating ip create public -c floating_ip_address -f value --floating-ip-address 10.11.12.13) # Associate floating IP to instance openstack server add floating ip ${INSTANCE_NAME_OR_ID} ${FLOATING_IP} # Disassociate floating IP openstack server remove floating ip ${INSTANCE_NAME_OR_ID} ${FLOATING_IP} # Release floating IP openstack floating ip delete ${FLOATING_IP} # show used floating IPs NETWORK_ID=$(openstack subnet list --network public -c Network -f value) openstack ip availability show -c total_ips -c used_ips ${NETWORK_ID} # Add floating IP to port openstack floating ip set --port ${PORT_ID} ${FLOATING_IP}
List reserved floating IPs per project
Install s3cmd (s3 CLI client)
sudo apt install -y s3cmd
Configuration file
s3cmd --configure ${HOME}/.s3cfg
CLI
Install
sudo apt install -y s3fs
Create credentials
echo ${BUCKET}:${ACCESS_KEY}:${SECRET_KEY} >> ~/.passwd-s3fs chmod 600 ~/.passwd-s3fs
Mount S3 bucket
s3fs bucket1 /tmp/mnt -o url=https://s3.example.com
Parameter
-o passwd_file=~/.passwd-s3fs -o url=https://s3.example.com,allow_other,umask=0000 -o use_cache=/tmp/cache
/etc/fstab
mybucket1.mydomain.org /mnt/mybucket1 fuse.s3fs _netdev,allow_other,passwd_file=/home/ftpuser/.passwd-aws-s3fs,default_acl=public-read,uid=1001,gid=65534 0 0
Links
https://github.com/s3fs-fuse/s3fs-fuse
https://gridscale.io/community/tutorials/s3-fuse-ubuntu/
Intel SSD Firmware Update Tool
https://downloadcenter.intel.com/download/30509?v=t
https://downloadcenter.intel.com/download/30373?v=t
https://downloadmirror.intel.com/30509/eng/CLI-Intel-MAS-1.8-User-Guide-Public-342245-010US.pdf
# latest version
https://www.intel.com/content/www/us/en/download/19520/intel-memory-and-storage-tool-cli-command-line-interface.html?v=t
wget https://downloadmirror.intel.com/30373/eng/Intel%C2%AE_SSD_FUT_3.0.11.zip intelmas show -output json intelmas load -f -intelssd 0 intelmas show -output json -intelssd -sensor for NVME_ID in $(intelmas show -output json -intelssd | jq '.[] | select(.ProductFamily | contains("Intel")) .Index'); do intelmas show -intelssd ${NVME_ID} intelmas load -force -intelssd ${NVME_ID} done
Intel NVMe firmware update with Intel SSD Data Center Tool (deprected)
Check for latest version: https://downloadcenter.intel.com/search?keyword=SSD+Firmware+Update+Tool
# downlaod Grml image
wget http://download.grml.org/grml32-small_2013.02.iso -O /tmp/grml32-small_2013.02.iso
# mount image
mount /tmp/grml32-small_2013.02.iso /mnt/ -o loop
# copy Grml files to tftpboot
mkdir /var/lib/tftpboot/live/grml/32-small/
cp /mnt/boot/grml32small/initrd.img /var/lib/tftpboot/live/grml/32-small/
cp /mnt/boot/grml32small/vmlinuz /var/lib/tftpboot/live/grml/32-small/
cp /mnt/live/grml32-small/grml32-small.squashfs /var/lib/tftpboot/live/grml/32-small/
# configure NFS
echo "/var/lib/tftpboot/live/grml/32-small *(ro,no_root_squash,async,no_subtree_check)
configure parameter
# determine the maximum size of a shared memory segment cat /proc/sys/kernel/shmmax # set default shared memory limit for shmmax (16 GB) echo 17179869184 > /proc/sys/kernel/shmmax # add the following line to /etc/sysctl.conf to make a change permanent echo "kernel.shmmax=4294967296" >> /etc/sysctl.d/90-shmmax.conf # load parameter /sbin/sysctl -p /etc/sysctl.d/90-shmmax.conf
reduce swap usage
https://en.wikipedia.org/wiki/Swappiness
List floatin IPs
openstack floating ip list +--------------------------------------+---------------------+------------------+--------------------------------------+--------------------------------------+----------------------------------+ | ID | Floating IP Address | Fixed IP Address | Port | Floating Network | Project | +--------------------------------------+---------------------+------------------+--------------------------------------+--------------------------------------+----------------------------------+ | dc049c28-6562-4c37-834b-d3a612d4b580 | 1.2.3.4 | None | None | 39583230-154f-4b56-a56e-2fd83c9986ce | 1eede1bdc28344f3acf6b48b232e406f | +--------------------------------------+---------------------+------------------+--------------------------------------+--------------------------------------+----------------------------------+
List VMs