**__Troubleshooting__** * **System** * [[system_stats|System Usage Summary]] * [[process_investigation|Process Investigation]] * [[top5_cpu_processes|Top 5 CPU Processes]] * [[ram_diagnostics|Ram Usage Breakdown]] * [[memory_hoggers|Memory Hoggers]] * [[tcpdump|TCPDUMP]] * **Web server** * [[apache_buddy|Apache Buddy]] * [[max_clients|Apache Max Clients]] * [[php-fpm_investigation|php-fpm Investigating]] * [[php-fpm_pal|php-fpm pal]] * [[strace_php-fpm|fpm strace]] * [[netstat|Netstat]] * [[connetctions_to_port|Connections to port]] * [[apache_sitedown|'Site-down' Investigation]] * [[log_hits|Log Summary]] * [[nginx_oneliner|nginx server blocks (httpd -S equivalent)]] * [[http_headers|HTTP Headers]] * **mysql** * [[mysqltuner|mysql tuner]] * [[mysql_processlist|Process Investigation]] * [[mysql_engines|mysql Engines]] * [[mysql_slow_investigation|mysql slow logs]] * [[mysql_replication|mysql Replication Investigation]] * [[mysql_database_sizes|mysql database size]] * * **Networking** * [[nat_to_public|NAT to Public]] * [[network_transmit_recieve|Transmit/Receive Issues]] * [[vnstat|vnstat]] * **Other** * [[recap_oneliner|Recap/rs-sysmon one-liner]] * [[cores|How may cores?]] * [[list_all_crons|List all crons]] * [[largest_files|Largest files]] * [[realuser|Real Users]] * [[brute_force|Brute-force?]] * [[uptime|uptime]] * [[bash_scripting|Bash]] \\ * [[zededitor|Zed Editor]] \\ *[[editor|Editor Environment Settings]] ------------------------------- * [[rhel_vs_centos|CentOS vs RHEL]] * [[php_versions_packaging|PHP Versions and Support]] \\ * **__Apache__**\\ * [[install_apache|Installation]] * [[apache_vhost|vhost]] * [[httpd_conf_prefork|prefork]] * [[ssl|SSL]] * [[ssl_pfx|Convert .pfx to .pem]] * [[ssl_expiry|SSL Expiry]] * [[ssl_encryption_type|SSL Encryption Type]] * [[ssl_poodle|Poodle Fix]] * [[ssl_cipher_check|SSL Cipher/Protocol Check]] * [[sni|SNI]] * [[apache_configuration|Configuration]] * ** Modules ** * [[http_slow_loris|Slow-loris Attack/Mod_reqtimeout]] * [[x-forwarded-for|x-Forwarded-For]] * [[apache_auth|HTTP Authentication]] * [[apache_htaccess|.htaccess]] * [[apache_security|Security]] ------------------------------- * **__Mysql__** * [[install_mysql|Install]] * [[mysql_cnf|my.cnf]] * [[mysql_tuning|Tuning]] * **Users:** * [[mysql_usercreate|Creating/Dropping Users]] * [[mysql_updatepass|Updating Users Password]] * [[mysql_rootpass|Resetting lost root password]] * [[users_permissions|Granting Permissions]] * [[mysql_change_host|Changing Host]] * **Databases** * [[mysql_databases|DB Management]] * **Tables** * [[mysql_tables|Creating/Dropping]] * [[mysql_processlist|Show Process List]] * [[mysql_slow_query|Slow Query Log]] * [[mysql_mysqldump|mysqldump]] * [[holland_backup_centos|Holland Backup]] * [[mysql_phpmyadmin|phpMyadmin]] * [[mysql_remotedb_access|Remote db Access]] * [[mysql_database_sizes|database/tables sizes]] * [[mysql_master_slave_replication|mysql replication (master slave)]] ------------------------------- * **__Networking__** * [[adding_routes|Adding Static Routes]] ------------------------------- * **__Logging__** * [[recap|Recap]] * [[sar|Sar]] * [[logrotate|Logrotate]] * [[lsof|lsof]] ------------------------------- * **__PHP__** \\ * [[php-fpm|php-fpm]] * [[php_versions|Versions]] * [[info_php|info.php]] * [[php_ini|php.ini]] * [[securing_php|Securing PHP]] * [[php_error_logging|Error Logging]] * [[php-upgrade|php upgrade (yum-plugin-replace)]] ------------------------------- * **__iptables__** * [[iptables_addport|Add Port]] * [[iptables_droprule|Deleting a rule]] * [[ufw|UFW]] ------------------------------- * **__Nginx__** \\ * [[install_nginx|install]] * [[nginx_configuration|server block]] * [[http_auth|Http Authentication]] * [[nginx_compression|compression]] * [[proxy_pass|Proxy Pass]] * [[nginx_code|rewrite/redirect code]] * [[nginx_ssl|SSL]] * [[nginx_security|Security]] ------------------------------- * __**Syncing/Replication/lsync**__ * [[lsync|lsync]] ------------------------------- * **__DNS__** * [[dns_doctoring|DNS Doctoring]] ------------------------------- * **__Admin__** * [[kernel|Kernel]] * [[tune2fs|Tune2fs]] * [[fileadmin_scp|Secure Copy (SCP)]] * [[find_command|find command]] * [[tar|tar]] * [[awk|awk + sed]] * [[rsync|rsync]] * [[screen_session|Screen Sessions]] * [[screen_session_share|Screen Share]] * [[rename|rename]] * [[sort|Sort]] * [[history_timeformat|History TimeStamps]] * zip ------------------------------- * __**FTP/sFTP**__ * [[ftp|vsFTPd]] * [[sftp|sFTP]] ------------------------------- * __**Mail**__ * [[sending_mail|Sending Mail]] * [[deleting_mail|Deleting Mail]] ------------------------------- * __**Cron Jobs**__ * [[cronjobs|Format + Examples]] ------------------------------- * **__Varnish__** \\ * install * configure * [[varnish_default.vcl|default.vcl]] * [[varnish_restart|restart/test config]] * apache * nginx ------------------------------- * **__Fail2Ban__** * [[fail2ban_install|Install]] * [[fail2ban_commands|Commands]] * [[fail2ban_ssh_config|SSH Configuration]] * [[fail2ban-xmlrpc|xmlrpc]] * [[fail2ban_wp-login|wp-login]] ------------------------------- * **__Memcached__** \\ * install * [[memcache_invetigation|troubleshooting]] * configure ------------------------------- * **__Redis__** \\ * [[redis_cache|Clearing Cache]] ------------------------------- * **__Hardware__** \\ * [[raid|RAID]] ------------------------------- * **__Plesk__** * [[plesk_admin_pass|Admin password]] * [[plesk_mysql|mysql log in]] * [[plesk|General Plesk Stuff]] * [[plesk_logs|Plesk Logs]] * [[plesk_mail|List Plesk Mail Users]] * Plesk FTP Details ------------------------------- * **__git__** * [[git_install|Installing]] * [[git_clone|Cloning]] * Setting up a git ------------------------------- * __**Package Management**__ * [[yum|Yum]] * [[rpm|RPM]] * [[repositories|Repositories]] * [[yum_plugin_replace|yum replace]] ------------------------------- * **__SSH__** * [[ssh_keys|Creating ssh Keys]] * And logging in with ssh key * [[ssh|ssh no-keys]] * [[ssl_fingerprint|ssh fingerprint]] ------------------------------- * Python * [[python_altinstall|altinstall]] ------------------------------- * **__Wordpress__** * [[wordpress|Wordpress]] * **WP Web Design/config Stuff** * [[wp_frontpage|Frontpage Display]] * [[wordpress_whitepage|Wordpress White Screen]] * [[wp_menu|wp-custom menu]] ------------------------------- * **__Magento__** * [[magento_information|Magento Edition/Version]] * [[magento_indexing|Indexing]] ------------------------------- * __**LXC-Containers**__ * [[lxc-containers|Overview/Installation]] ------------------------------- * **__Docker__** * [[docker_install|Install]] * [[docker_containers|Basics]] * [[docker_images_containers|Creating Containers from images]] * [[docker_networking|Networking]] * [[docker_push|Imaging & Pushing]] * [[docker_run|Run Examples]] ------------------------------- __**RedHat7 134**__ \\ *Systemctl ***Firewalld** * [[firewalld_general|General]] * [[firewalld_ports_services|Opening ports / services]] * **__SELinux__** * [[selinux|selinux]] *Scheduling Tasks \\ ***ACLs** \\ * [[acl|Acls]] * [[acl_backup|Backup/Restore]] *[[ldap_centos7|LDAP]] \\ *Adding Disks, Partitions and Filesystems \\ *[[logical_volumes|Logical Volume Management (LVM)]] \\ *Accessing NFS \\ *Accessing SAMBA (SMB) \\