Useful Commands
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Apache Related Commands
- Expand httpd.conf template:
expand-template /etc/httpd/conf/httpd.conf
- Restart httpd:
/etc/init.d/httpd-e-smith restart
or
sv t /service/httpd-e-smith
- To leave Apache reads the distributed configuration file .htaccess per ibay:
db accounts setprop IBAYNAME AllowOverride All signal-event ibay-modify IBAYNAME
- Allow PHP URL File Open per ibay:
Make custom httpd directory if not exist
mkdir -p /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf
Create the template name 99allow_url_fopen and put the content
<Directory /home/e-smith/files/ibays/IBAYNAME/html> php_admin_flag allow_url_fopen on </Directory>
Save the file
Expand
expand-template /etc/httpd/conf/httpd.conf
Restart httpd.
/etc/init.d/httpd-e-smith restart
MySQL
There appears to be no password set for the MySQL root password, but this is not true. If you are logged in to the SME Server shell a special mechanism is in place to log you in with MySQL root privileges without prompting you for the password.
The MySQL root password for SME Server is a 72 character random string generated during installation of SME Server. You should never change the MySQL root password as this will break your SME Server configuration. How to login as MySQL root user? describes how to access MySQL with root privileges on SME Server.
see also MYSQL
Login as MySQL root user
To login as MySQL root user, simply type 'mysql' at the SME Server shell, this will log you in with root privileges.
PHP Related Commands
- Expand php.ini template:
expand-template /etc/php.ini
- Configure PHP Basedir Restriction per ibay:
db accounts setprop IBAYNAME PHPBaseDir DIR1:DIR2:DIRn signal-event ibay-modify IBAYNAME
Example
db accounts setprop Primary PHPBaseDir /home/e-smith/files/ibays/Primary:/tmp signal-event ibay-modify Primary
- Execution Time:
db configuration setprop php MaxExecutionTime ZZ expand-template /etc/php.ini /etc/init.d/httpd-e-smith restart
where ZZ is the time in seconds.
- Memory Limit:
db configuration setprop php MemoryLimit XXM expand-template /etc/php.ini /etc/init.d/httpd-e-smith restart
where XX is the amount of memory in Mb.
- Upload Max File Size:
db configuration setprop php UploadMaxFilesize WW expand-template /etc/php.ini /etc/init.d/httpd-e-smith restart
where WW is the file size in Mb.
- Allow URL FOpen:
Not secure. Instead use per ibay or directory.
Squid Cache
Extracted from: http://forums.contribs.org/index.php?topic=38848.msg176737#msg176737
Flush and Restart
sv d /service/squid echo "" > /var/spool/squid/swap.state sv u /service/squid
& to check it's running
sv s /service/squid
SSH
- Enable ssh access (the lazy not-so-secure way, but I am assuming for this testing/dev scenario that your external IP is really a local address behind a router)
db configuration setprop sshd status enabled
db configuration setprop sshd PermitRootLogin yes
db configuration setprop sshd acccess public
db configuration setprop sshd PasswordAuthentication yes
/sbin/e-smith/signal-event remoteaccess-update
- Allow ssh in public or private mode : public= all internet private= only your network
db configuration sshd access public signal-event remoteaccess-update
Command-Line Quick Reference Guide
Below is a list of commands that I use all the time & tend to forget.
Generic Linux
| COMMAND NAME | DESCRIPTION |
|---|---|
| df -h | shows disk usage in human readable form |
| man <commandname> | shows more info about a command |
| uname -a | kernel release version |
| /usr/sbin/smbd -V | samba version |
| /usr/sbin/httpd -v | apache version |
| mysql -v | mysql version |
| php -v | php version |
| mv | moves or renames a file |
| cp | copies or backup a file |
| rm | removes or deletes a file |
| grep <process> | outputs processes running <process> |
| ps -AH | report process status |
| top | shows processes |
| top -i | shows only active processes |
| htop | shows processes (more versatile than top) |
| iptraf | shows network info |
| mc -d | show midnight commander (cli file browser) to navigate through system easily |
| cat /proc/mdstat | shows software raid |
| host -t mx aol.com | shows the mx records for aol.com |
| net groupmap list | shows samba mappings to nt groups |
| telinit 1 | changes to single user mode |
| ifconfig | shows detailed info on ethernet ports |
| grep -r "casesensitivesearch" * | finds all documents containing the criteria in a dir |
| tail -f /var/log/<LOGFILE> | realtime viewing of your log file |
| hdparm -Tt /dev/mdx (where x is 0,1,2,etc) | shows software raid performance |
| mdadm --detail /dev/mdx (where x is 0,1,2,etc) | gives raid info |
| tar -czvf foo.tar.gz foo | creates a tar/zip file of a directory |
| tar -xvzf foo.tar.gz | untar/unzip a tar/zip file |
| scp -P <ssh_portnumber> foo.tar.gz <user>@<other_server_ipaddress>:/opt | transfers file to another server in /opt directory |
| rsync --progress -te "ssh -p <ssh_portnumber>" foo <other_server_ipaddress>:/opt | transfers file to another server |
| sed -i s/foo/fee/g <FILENAMEORPATHTODIR> | replaces foo with fee |
Estimate file space usage - drill down into directories
cd / du --si --max-depth 1 cd /home du --si --max-depth 1 cd /home/e-smith du --si --max-depth 1
RPM's
| Command | Explanation |
|---|---|
| rpm -qa | shows all rpms installed |
| rpm -qa --last | shows all rpms installed & installation date |
| rpm -q | asks for rpm info |
| rpm -qi | asks for detailed rpm info |
| rpm -ql <packagename> | lists all files in a package |
| rpm -qf <filename> | reports what package a file belongs to |
YUM'ing
| Command | Explanation |
|---|---|
| yum install <packagename> | installs packagename & any package it may need |
| yum remove <packagename> | removes packagename |
| yum list updates | list updates to any installed package |
| yum list available | list available packages in all repos not already installed |
| grep <reponame> | list available packages -shows only from repo name |
| yum search <packagename> | lists all packages in all repos matching packagename |
| yum clean all | Is used to clean up various things which accumulate in the yum cache |
| yum --enablerepo=<reponame> <command> | enables a repo not normally enabled |
| /sbin/e-smith/audittools/newrpms | shows all extra packages installed |
| /sbin/e-smith/audittools/repositories | show all repositories and if they are activated or not |
Restoring Default Yum Repositories
cd /home/e-smith/db/ mv yum_repositories yum_repositories.po /etc/e-smith/events/actions/initialize-default-databases
Now you have a clean install, you can re-add 3rd party repos as described above
signal-event yum-modify
and check if you can update your server
yum update
SME Server specific
| Command | Explanation |
|---|---|
| signal-event post-upgrade | performs SME Server to go regenerate all templates |
| signal-event reboot | reboots the server |
| signal-event <event> | performs SME Server to go regenerate event template (you may use TAB to auto-complete your command line) |
| signal-event dns-update | refreshes the DNS cache, useful for when you know a domain has changed IP and the TTL is too long to wait |
| /etc/e-smith/events/actions/navigation-conf | recreates server-manager navigation panel |
| config show | display the internal configuration of the server |
| config show <service name> | show the service configuration (you may use TAB to auto-complete your command line) |
| db | shows the syntax of the db command |
| db configuration show | shows the entire server configuration |
| db configuration setprop <record> <property> <value> | sets or changes a property in the configuration database |
| db accounts show | shows all account details |
| db accounts show <accountname> | shows the account details |
db command
you can see this page of the wiki DB_Variables_Configuration
General Service Handling
- start
sv u /service/servicename
- stop
sv d /service/servicename
- restart
sv t /service/servicename
Exemple
Restarting:
sv t /service/httpd-e-smith
