Nurlan199206

FILE_PATH="/root/choco.jks"
#1 - chain
ISSUER1=$(echo 'issuer' | keytool -list -storepass mypass -v -keystore $FILE_PATH 2> /dev/null | grep Issuer: | awk {'print$2,$3,$4,$5'} | sed 's/,//' | sed -n 1p | sed "s/ //g" | cut -c 4-)
KEYSTORE_UNTIL1=$(echo 'dummydummy' | keytool -list -storepass mypass -v -keystore $FILE_PATH 2>/dev/null | grep -i Until  | sed 's/.*until: //' | sed -n 1p)

#2 - chain
ISSUER2=$(echo 'issuer' | keytool -list -storepass mypass -v -keystore $FILE_PATH 2> /dev/null | grep Issuer: | awk {'print$2,$3,$4,$5'} | sed 's/,//' | sed -n 2p | sed "s/ //g" | cut -c 4-)
KEYSTORE_UNTIL2=$(echo 'dummydummy' | keytool -list -storepass mypass -v -keystore $FILE_PATH 2>/dev/null | grep -i Until  | sed 's/.*until: //' | sed -n 2p)

#3 - chain

Nurlan199206

###############################################################################
# Helpful Docker commands and code snippets
###############################################################################

### CONTAINERS ###
docker stop $(docker ps -a -q) #stop ALL containers
docker rm -f $(docker ps -a -q) # remove ALL containers
docker rm -f $(sudo docker ps --before="container_id_here" -q) # can also filter

# exec into container

Nurlan199206

# find the kube node of the running pod, appear next to hostIP, and note containerID hash
kubectl get pod mypod -o json
# -> save hostIP
# -> save containerID

# connect to the node and find the pods unique network interface index inside it's container
docker exec containerID /bin/bash -c 'cat /sys/class/net/eth0/iflink'
# -> returns index

# locate the interface of the node

Nurlan199206

systemd service
================================================
[Unit]
Description=MySQL Exporter Service
Wants=network.target
After=network.target

[Service]
User=root
Group=root

Nurlan199206

docker ps -a -s - отобразить размеры запущенных контейнеров

docker builder prune -f ---- clear /var/lib/docker/overlay2 directory

docker run -it --rm dtzar/helm-kubectl:3.7.1 /bin/sh - interactive session into container

docker exec -i postgres /bin/bash -c "PGPASSWORD=YOUR_PASSWROD pg_dump --username postgres YOUR_DB" > /root/adaptive_db-$(date +%Y-%m-%d).sql

docker system df - show containers, volumes, images size

Nurlan199206

[Unit]
Description=Zookeeper Daemon
Documentation=http://zookeeper.apache.org
Requires=network.target
After=network.target

[Service]    
Type=forking
WorkingDirectory=/opt/zookeeper
User=root

Nurlan199206

1. Install Kafka

   cd /opt
   curl -O http://www.gtlib.gatech.edu/pub/apache/kafka/0.11.0.0/kafka_2.11-0.11.0.0.tgz
   tar xvzf kafka_2.11-0.11.0.0.tgz
   ln -s kafka_2.11-0.11.0.0/ kafka

2. Edit /usr/lib/systemd/system/kafka-zookeeper.service

Nurlan199206

-----------------------/etc/sysctl.conf---------------------------
net.ipv4.ip_forward = 1
net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.all.forwarding = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.all.send_redirects = 0
-------------------------------------------------------------------
then sysctl -p

Nurlan199206

root@backup:/home/nizimbetov# fdisk /dev/sdb

Welcome to fdisk (util-linux 2.34).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.

The old LVM2_member signature will be removed by a write command.

Device does not contain a recognized partition table.
Created a new DOS disklabel with disk identifier 0x73e02a73.

Nurlan199206

1. файловая система ext4 не поддерживается, необходимо использовать например xfs
2. корневой раздел не поддерживается, необходимо использовать например раздел /mnt
========================================================================================
192.168.0.155 minio1.nurlan.kz
192.168.0.156 minio2.nurlan.kz
192.168.0.157 minio3.nurlan.kz
192.168.0.158 minio4.nurlan.kz

mkdir -p /mnt/disk{1..4}/minio