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

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

[Service]
User=root
Group=root

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# 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

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###############################################################################
# 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

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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

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docker run -d --name gitlab-runner --restart always -v /srv/gitlab-runner/config:/etc/gitlab-runner -v /var/run/docker.sock:/var/run/docker.sock   gitlab/gitlab-runner:latest

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=================Filebeat===7.6.2=======/etc/filebeat/filebeat.yml===========================
filebeat.inputs:
- type: log

  enabled: true
  paths:
    - /opt/IBM/WebSphere/AppServer/V85/ND/profiles/AppSrv01/logs/Member1/SystemOut.log

filebeat.config.modules:
  path: ${path.config}/modules.d/*.yml

Nurlan199206

Пример использования curator для автоматического удаления индексов старше 4 дней.

Software versions:
curator: 5.8.1 (https://www.elastic.co/guide/en/elasticsearch/client/curator/current/yum-repository.html)
ElasticSearch: 7.5.0

1. curator --config /etc/elasticsearch/curator-clients.yml /etc/elasticsearch/curator-actions.yml - запуска куратора

0 2 * * * /usr/local/bin/curator --config /etc/elasticsearch/curator/client.yml /etc/elasticsearch/curator/action.yml

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================================================SRV-1=======================================================
! Configuration File for keepalived

global_defs {
     router_id NGINX_MASTER
}

vrrp_instance NGINX_VRRP_1 {
    state MASTER
    interface enp0s3

Nurlan199206

pcs cluster auth 192.168.0.116 192.168.0.117 -u hacluster -p 123 --force

pcs cluster setup --force --name pacemaker1 192.168.0.116 192.168.0.117

pcs status

pcs resource create VirtualIP ocf:heartbeat:IPaddr2 ip=192.168.0.120 cidr_netmask=24 op monitor interval=30s

pcs resource delete VirtualIP