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Elasticsearch update document with POST query

You can change a document with the help of the API and Elasticvue. Query format is: POST /myindex/_update/mydocid { "doc" : { "myfield": "new value of my field" } } You can apply it with Elasticvue:

Listening SYSLOG messages with ngrep or tcpdump

You can test your SYSLOG forwarding with this commands at the receiving server. tcpdump -vv -i eth1 port 514 | grep 10.1.5.115 or ngrep -d any host 10.1.5.115 and port 514 Change the IP address and network interface according to your use case.

Docker IPTABLES error

If you encounter this error while doing some Docker jobs, restart the docker service with following command: Error response from daemon: driver failed programming external connectivity on endpoint some-ghost (0fe2ecd33d342c0ee8e191f2fc7a9103a50963a9f7da24622cb87451db2808ca): (iptables failed: iptables --wait -t nat -A DOCKER -p tcp -d 0/0 --dport 80 -j DNAT --to-destination 172.17.

Run WinSCP with sudo command

If you encountered a "access denied" error while performing task while using WinSCP use this modification in settings: * Edit your WinSCP profile * Click Advanced and go to Envronment > SFTP * Write the following command as SFTP server: sudo su -c /usr/lib/sftp-server * Save and connect

List the total number and size of files on the Linux command line

You can list the total files and file size of a directory with this command: find /home/ubuntu/ -type f | wc -l && du -sh /home/ubuntu/ root@ubuntu:/home/ubuntu# find /home/ubuntu/ -type f | wc -l && du -sh /home/ubuntu/ 186 318M /home/ubuntu/

Performing disk write test on Linux command line

dd if=/dev/zero of=/write.test bs=1M count=1024 Performs 1GB write test: root@ubuntu:/home/ubuntu# dd if=/dev/zero of=/write.test bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 0.8919 s,

Restoring original visitor IPs while using Cloudflare

If your website traffic is routed through the Cloudflare network, they act as a reverse proxy. Because of this, your server logs Cloudflare IP address. This behavior prevents you from creating IP based access lists. If you want to create scenarios according to visitor's original IP, you need

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