grep -oh /some/path/*
grep only show match
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Category Archives: linux
System clock synchronized: no
vim /etc/systemd/timesyncd.conf
[Time]
FallbackNTP=ntp.ubuntu.com
systemctl daemon-reload
timedatectl set-ntp off
timedatectl set-ntp on
timedatectl status
Incorrect date value: ‘0000-00-00’ for column ” at row 1
SET GLOBAL sql_mode = '';
ERROR [input.filestream] filestream/input.go:138 File could not be opened for reading: failed opening
Problem too many open file
vim /lib/systemd/system/filebeat.service
[Service]
LimitNOFILE=infinity
systemctl daemon-reload
systemctl restart filebeat
increase shards elasticsearch
curl http://localhost:9200/_cat/shards | wc -l
100
curl -XPUT http://localhost:9200/_cluster/settings -H "Content-Type: application/json" -d '{ "persistent": { "cluster.max_shards_per_node": "200" } }'
postfix reject email address
vim /etc/postfix/sender_access
[email protected] REJECT
postmap hash:/etc/postfix/sender_access
smtpd_relay_restrictions = …
…
check_sender_access hash:/etc/postfix/sender_access
/etc/init.d/postfix restart
Delivery Status Notification (Failure)
Inbox
Mail Delivery Subsystem <[email protected]>
8:16 PM (6 minutes ago)
to me
Message blocked
ifup alias ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Device does not seem to be present, delaying initializatio
make sure HWADDR was set
vi /etc/sysconfig/network-scripts/ifcfg-eth100
HWADDR=MAC ADDRESS
[::]:80 failed (97: Address family not supported by protocol
vim /etc/nginx/sites-enabled/default
Remove listen [::]:80 default_server;
X-Frame-Options SAMEORIGIN
Configuring Apache
Header always append X-Frame-Options SAMEORIGIN
Configuring nginx
add_header X-Frame-Options SAMEORIGIN;
btrfs resize
btrfs filesystem resize max /some/path
node pm2 log create rotate
pm2 logrotate -u user
/home/user/.pm2/pm2.log /home/user/.pm2/logs/*.log {
rotate 12
weekly
missingok
notifempty
compress
delaycompress
create 0640 user user
}
apache change document root based on url
ServerName testdomain.com
ServerAlias *.testdomain.com
RewriteEngine on
RewriteMap lowercase int:tolower
RewriteCond ${lowercase:%{SERVER_NAME}} ^[a-z0-9-]+\.testdomain\.com$
RewriteRule ^(.+) ${lowercase:%{SERVER_NAME}}$1 [C]
RewriteRule ^([a-z0-9-]+)\.testdomain\.com/(.*) /var/www/vhost/testdomain.com/httpdocs/$1/$2
telnet connect to rabbitmq password
rabbitmqctl authenticate_user username password
rabbitmq port 15672 not working
rabbitmq-plugins enable rabbitmq_management
install wazuh
curl -s https://packages.wazuh.com/key/GPG-KEY-WAZUH | apt-key add –
echo “deb https://packages.wazuh.com/4.x/apt/ stable main” | tee -a /etc/apt/sources.list.d/wazuh.list
apt-get update
WAZUH_MANAGER=”10.0.0.2″ apt-get install wazuh-agent