tonmanna

• Flow of lua nginx module directives: https://openresty-reference.readthedocs.io/en/latest/Directives/
• body_filter_by_lua documentation: https://github.com/openresty/lua-nginx-module#body_filter_by_lua
• Following sample is from this site: https://groups.google.com/d/msg/openresty-en/5PWmL2f70x8/R2DUMsNUAgAJ

http { 
    proxy_cache_path /tmp/cache levels=1:2 keys_zone=cache:60m max_size=1G; 
    server { 
      listen 8080; 

      location /replace-body { 

tonmanna

DOM Performance

• How the browser renders the document
  • Receives the data (bytes) from the server.
  • Parses and converts into tokens (<, TagName, Attribute, AttributeValue, >).
  • Turns tokens into nodes.
  • Turns nodes into the DOM tree.
• Builds CSSOM tree from the css rules.

tonmanna

kubeadm certs check-expiration
kubeadm certs renew all
systemctl restart kubelet

tonmanna

https://codewithhugo.com/install-just-redis-cli-on-ubuntu-debian-jessie/


cd /tmp
wget http://download.redis.io/redis-stable.tar.gz
tar xvzf redis-stable.tar.gz
cd redis-stable
make
cp src/redis-cli /usr/local/bin/
chmod 755 /usr/local/bin/redis-cli

tonmanna

function getExecArgv(options: NodeExecutorOptions) {
  const args = [
    '-r',
    require.resolve('source-map-support/register'),
    ...options.runtimeArgs,
  ];

  if (options.inspect === true) {
    options.inspect = InspectType.Inspect;
  }

tonmanna

https://coralogix.com/blog/tutorial-elasticsearch-snapshot-lifecycle-management-slm/


curl -X PUT http://localhost:30265/_snapshot/repository -H 'Content-Type: application/json' -d '{"type": "url", "settings": { "url": "file:/backup" }}'
curl -X PUT "localhost:30265/_snapshot/repository?pretty" -H 'Content-Type: application/json' -d'{"type": "fs","settings": {"location": "backup_repo"  }'


curl -X GET 'http://localhost:30265/_snapshot/backup_repository'

curl -X PUT 'http://localhost:30265/_snapshot/backup_repository' \

tonmanna

sudo ufw deny from {ip-address-here} to any
sudo ufw deny from 192.168.1.5 to any

sudo ufw reject from 202.54.5.7 to any

sudo ufw status

ufw deny from {ip-address-here} to any port {port-number-here}
sudo ufw deny from 202.54.1.5 to any port 80

tonmanna

https://carleton.ca/scs/2019/extend-lvm-disk-space/

Modify (extend) the LVM:
  Tell LVM the physical partition size has changed: sudo pvresize /dev/vda1
  Find the actual path of the LVM logical volume: sudo lvdisplay – The LV Path is the value needed
  Tell LVM to extend the logical volume to use all of the new partition size: sudo lvextend -l +100%FREE /dev/COMPbase-vg/root – Using the LV Path from above

Resize the file system:
sudo resize2fs /dev/COMPbase-vg/root

tonmanna

$ touch 2gbarea
$ truncate -s 2G 2gbarea
$ mke2fs -t ext4 -F 2gbarea
mke2fs 1.43.3 (04-Sep-2016)
Discarding device blocks: done                            
Creating filesystem with 524288 4k blocks and 131072 inodes
Filesystem UUID: bf1b2ee8-a7df-4a57-9d05-a8b60323e2bf
Superblock backups stored on blocks: 
    32768, 98304, 163840, 229376, 294912

tonmanna

Flannel not start 
edit /etc/kubernetes/manifests/kube-controller-manager.yaml
at command ,add
--allocate-node-cidrs=true
--cluster-cidr=10.244.0.0/16
then,reload kubelet from flannel
https://github.com/coredns/deployment/issues/87
https://github.com/flannel-io/flannel/issues/728

docker rmi -f $(docker images -a -q)