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== ASL Troubleshooting ==
== ASL Troubleshooting ==
Revision as of 00:09, 9 February 2010
Before You Start
ASL is designed to integrate with the operating system as shipped by the vendor (CentOS, RedHat, and Fedora). Customized environments that deviate from the vendor designed standards, and packaging can use ASL Lite, or consult with our services group for a custom solution.
Dedicated systems will be using the ASL hardened kernel. Depending on the distribution you are running, this can involve changes in the names of core modules on the system involved with SATA, SCSI, and Network card modules.
1and1 network card module name changes
Vmware SCSI emulation name changes
1and1 Checklist for /etc/modules.conf or /etc/modprobe.conf
Step 1) Enumerate hardware with /sbin/lspci
Step 2) Check network cards,
Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] was
alias eth0 8139too
alias eth0 via-rhine
Step 3) Check SATA modules
Note for SELinux environments
SELinux policies can interfere with RPM updates. This manifests in mysterious failures in %pre and %post macros (confirmed on RHEL4). Disable SELinux if you encounter any issues of this nature by setting selinux=0 in the kernel boot parameters. setenable 0, and disabling SELinux with sysctl have thus far proved ineffective.
Running the Automated installer
Installing ASL is as simple as running one command. The rest is taken care of for you. No need to mess around with configuration files, installing rpms or setting up repos. Just run the installer and let us do the work for you.
To install ASL over a standard HTTP connection run this command:
wget -q -O - http://www.atomicorp.com/installers/asl |sh
Or if you prefer to install over SSL, just run this command:
wget -q -O - https://www.atomicorp.com/installers/asl |sh
And thats it. Follow the instructions in the installer being sure to answer the configuration questions appropriately for your system. Once the installation is complete you will need to reboot your system to boot into the new hardened kernel that comes with ASL. You do not have to use this kernel to enjoy the other features of ASL, but we recommend you use the hardened kernel as it includes many additional security features that are not found in non-ASL system.
Changing your ASL password
You can change your ASL password via the License Manager at this URL:
Log into the GUI:
Click on the Atomic Secured Linux icon and you are now using ASL. You can view alerts, block attackers, configure ASL and use its many features from the GUI.
If you're a command line person you can also run or re-run many of ASL's features from the command line. Here are a few highlights:
1) Configure/Re-Configure ASL
2) Scan the system for vulnerabilities, malware and other security issues.
3) Scan the system for vulnerabilities, malware and other security issues and have ASL fix the system.
asl -s -f
4) Configure the ASL GUI
5) Check to make sure you haven't locked yourself out of your system
Before you reboot your system and if you told ASL to lock down SSH, make sure you can log into your system. Don't close out your current session, log in with a new session. This way you can confirm that you haven't installed bad ssh keys, or otherwise configured your server so you can't log in.
6) Finally, we highly recommend you click on the "Support" tab in the ASL GUI, or go to this URL to setup your support account:
The support system uses a different username and password from the installer to allow customers to create individual accounts for their support staff. Please make sure you sign up for a support portal account to make use of the support portals features such as case management, bug tracking and the knowledge base.
Testing the Kernel
1) Once the Atomic kernel is installed, determine which position the Atomic kernel has been installed.
[root@ac3 ~]# cat /etc/grub.conf
# grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/hda3 # initrd /initrd-version.img #boot=/dev/hda default=1 timeout=5 serial --unit=0 --speed=57600 terminal --timeout=5 serial console title CentOS (2.6.17-1.art) root (hd0,0) kernel /vmlinuz-2.6.17-1.art ro root=LABEL=/ console=ttyS0,57600n8 selinux=0 initrd /initrd-2.6.17-1.art.img title CentOS (2.6.9-34.0.2.ELsmp) root (hd0,0) kernel /vmlinuz-2.6.9-34.0.2.ELsmp ro root=LABEL=/ console=ttyS0,57600n8 initrd /initrd-2.6.9-34.0.2.ELsmp.img
Note the line: default=1, this indicates the kernel the system will boot by default, starting at position 0. Position 0 is "title CentOS (2.6.17-1.art)", and position 1 is "title CentOS (2.6.9-34.0.2.ELsmp)" in this example, indicating the system is configured to boot into the default CentOS kernel.
2) Type: grub
the following will be displayed:
GNU GRUB version 0.97 (640K lower / 3072K upper memory) [ Minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists the possible completions of a device/filename.] grub>
3) At the grub prompt set the default kernel to 0, and to only boot once with the following:
grub> savedefault --default=0 --once
4) type: quit
5) reboot the system. If for some reason the kernel does not work with the Atomic kernel, or is otherwise non-responsive, powercycling the system will restore the system to the default kernel.
1) The art kernel should be listed in /boot - for example:
2) Create a symbolic link to this:
ln -s /boot/vmlinuz-2.6.19-7.art /boot/vmlinuz-art
3) edit /etc/lilo.conf to add a section for the art kernel. Eg:
image=/boot/vmlinuz-art label=lxart append="console=tty0 console=ttyS0,57600 panic=30"
4) Type: lilo to make the change permanent. Then to test that you can boot into the new kernel do
lilo -v -v lilo -R lxart shutdown -r now
5) When it's rebooted, doing a uname -r should show the new art kernel. Now you can make it permanent. Edit /etc/lilo.conf so that it has the line:
6) type lilo. Then reboot.
manual installation (Not Recommended or Supported)
This method of installation is not supported. If the automated installer is not working for your system please notify our support team and we will be happy to fix the issue for you.
1) vim /etc/yum.repos.d/asl.repo
2) add the following:
[asl-2.0] name=ASL 2.0 baseurl=http://USERNAME:PASSWORD@atomicorp.com/channels/asl-2.0/DISTRO/$releasever/$basearch
3) replace DISTRO with fedora, centos, redhat, and USERNAME/PASSWORD with your username and password from the signup page
4) yum install asl
5) asl -c
Special Installation: Ensim
If you get the following error message:
Error: Missing Dependency: libclamav.so.2 is needed by package perl-Mail-ClamAV
Grab the latest update of perl-Mail-ClamAV from Dag's RPMforge archive:
Upgrade with rpm -Uvh perl-Mail-ClamAV-0.21-*rpm --nodeps
Re-run the ASL installer.
ASL addon - Atomic Scanner
To install the ASL antispam scanner, just run this command as root:
yum --enablerepo=asl-2.0-testing install atomic-scanner
Atomic Addon - Yum GUI
This is an unsupported tool released to the ASL community. It is not part of ASL. If you run into bugs with it, please report them, however the tool is not supported as part of an ASL subscription.
To install, just run this command as root:
yum --enablerepo=asl-2.0-testing install atomic-yum