Grades are now corrected in oodi.

Dear students, the scores and grade limits published in noppa are correct. Unfortunately, there was some errors when importing the grades to other systems(oodi/orek/osr). The mistakes will be hopefully corrected today. Sorry for the inconvenience and merry Christmas!

Dear students, to get a grade from this course, I remind to you to fill in the mandatory course feedback: In English: http://www.cs.hut.fi/cgi-bin/teekysely.pl?action=showform&id=T1105201-T1105201-s2011palaute&lang=ENG In Finnish: http://www.cs.hut.fi/cgi-bin/teekysely.pl?action=showform&id=T1105201-T1105201-s2011palaute&lang=FIN In Swedish: http://www.cs.hut.fi/cgi-bin/teekysely.pl?action=showform&id=T1105201-T1105201-s2011palaute&lang=SVE

Your last chance to visit grading will be on Friday 16.12.2011 at 13-14 in Playroom (A120).

Results of the extra round are now in Noppa.

Demo times for the extra round are now published in the course reservation system.

Dear students, in order to get a grade from this course, our new course policies requires you to fill in the feedback form. You'll find list of courses from here: http://www.cs.hut.fi/u/vjs/php/palaute.php?year=2011&term=s Click the "ENGSVE" link to switch to a different language than Finnish. Please do not forget to give feedback or otherwise we cannot give you a grade from the course.

Grade limits are published now in Noppa. Please check them out to decide if you want to take the extra round.

Reception times for the extra round will be published during this day. Remember that a full grade (5) requires points from the extra round.

Results of round 5 (VPN) are published in Noppa. Grade limits will be published during this weekend.

Dear Students, LDAP assignment has been published now. Sorry for the delay. Reception times will be available soon. Good luck with the assignment!

Dear students, the LDAP assignment will be published on Friday, at the latest. In the mean time, please get familiar (in general) with LDAP and PAM authentication in Linux. Sorry for the delay in the schedule.

Round 5 (VPN) demo times are now published in the reservation system.

Dear students, we have noticed that VPN assignment is rather difficult to do as it is. We will update the assignment today to make it easier but feel free to complete it with the original instructions. Also, we'll relax the scoring a bit in this round due to the last minute changes. Apologies for the incovenience.

Reception times for round 5 are available.

Round 4 results are published now in Noppa.

To remind you, lab assignments 1-5 are mandatory. Assignment 6 is optional but required for full grade. Grade limits will be published after the fifth round. P.S. There will be less demo sessions for Fridays for the remaining rounds.

Sorry for spamming. Now also the rest of the round 4 appointment times are available for reservation.

Some appointment times for the round 4 are now available in Taru. More will be added on Saturday. We apologize for the unusually late announcement of the times.

Round 3 reception times are now available in Taru Appointment Scheduler. Having a reception appointment IS NOT compulsory, in other words reception times are completely voluntary. If you need some help with the exercises of this particular round, please reserve a personal appointment with an assistant. Simple questions and notifications may be sent by email, but we reserve a right to instruct you to a reception appointment.

You may reserve an appointment for your round 3 demo now.

Dear students, you can revisit scoring of the past assignments on the last day of the corresponding demo week (Friday). If you can't make it, you can come also on the following Friday. The time is 13:00-14:00 and the place is playroom (A120) at the T-building.

Noppa is down tonight as well, just in case you didn't notice.

The reservation system will be down for upgrades during the night. If you need to make urgent reservations, please do so before nine o'clock in the evening. The system will be up tomorrow noon. Sorry for the inconvenience.

Round 3 reception times are now available in Taru Appointment Scheduler. Having a reception appointment IS NOT compulsory, in other words reception times are completely voluntary. If you need some help with the exercises of the round, please reserve a personal appointment with an assistant. Simple questions and notifications may be sent by email, but we reserve a right to instruct you to a reception appointment. Please note also that now the deadline of reserving appointments has been changed to 20:00 EET on the day before.

Round 2 results are published in Noppa.

Dear students To access your virtual machines from Niksula network, you have to add the following to one of the Niksula's hosts ".ssh/config" file (do not copy-paste empty lines from the example). ----clip-clap---- Host lab1 ProxyCommand ssh username@kosh.aalto.fi nc %h %p Hostname farm1.niksula.hut.fi User labrat Port 99991 ----clip-clap---- In this example alias for virtual machine is "lab1" and host that we use as a proxy outside the Niksula's network is "kosh.aalto.fi" (you can use whatever host you like that is outside Niksula, but remember to change username to the one you're using on the host). "Port" is you of course your virtual machine port. To access your virtual machine you only need to type "ssh lab1". First it asks your password to kosh.aalto.fi and then to your virtual machine. To make things even easier, you can add your public key from _Niksula_ (not from kosh) to virtual machines' ".ssh/authorized_keys" file and that way you only have to type in your password to host that you have defined in "ProxyCommand" line. Actually you can access the virtual machines without typing password even at once, but that's an exercise for you to solve.

Dear students, When you are assigning IP addresses for eth1 or eth2 interfaces, do not use IP addresses from eth0's address space (172.16.0.0/12), because that way you will break virtual machines routing table. Instead use addresses from address spaces 10.0.0.0/8 or 192.168.0.0/16.

Hi, the default installation in the virtual machines uses kernel-based NFS and this further defaults to NFSv4. A critical difference between v3 and v4 is that the former uses UID numbers where as the latter symbolic usernames. You can use either version in the assignment but probably v3 is a bit more suitable for the assignment as it is now. Thus, you can enforce the NFS to version three in the assignment. It is also ok to do the assignment with unfs3 if you will.

Hi, demo sessions for the next week will be available today, roughly around noon.

Round 1 results are now in Noppa. If you want to, you can discuss about the results with the assistants in A120 on Friday 7.10 at 13-14

Round 1 results are now in Noppa. If you want to, you can discuss about the results with the assistants in A120 on Friday 7.10 at 13-14.

Round 2 reception times are now available in Taru Appointment Scheduler. Having a reception appointment IS NOT compulsory, in other words reception times are completely voluntary. If you need some help with the exercises of the round 2, please reserve a personal appointment with an assistant. Simple questions and notifications may be sent by email, but we reserve a right to instruct you to a reception appointment.

Hi, the virtual machines are unreachable from the cs.hut.fi network. Please access the virtual machines from other networks until the admins have fixed the problem. Sorry for the inconvenience.

Dear students, Virtual machines are now back online and working, so you can still do last minute system configurations.

Dear students, Virtual machines are down, and we are figuring out the problem. Stay tuned for more information.

Deadline for picking an appointment for the demo of the first round is one day before the deadline at 22:00 EET. The last demo sessions will be on Friday, so the ultimate deadline for attending the course's first compulsory assignment is on Thursday 22nd at 22:00 EET. At that moment you should have already reserved the time. Please pick an appointment early enough through our appointment scheduler! Note also that we cannot probably handle all the students on Friday only, and it is on your responsibility to get a time for yourself. There have been some outages today in the appointment scheduler. Now they should be over, apologies for any inconvenience.

The appointment reservation system is now open on the address below. Please check the preferences page after you have logged in. If you haven't registered to the course via Oodi, please contact the course staff.

The reservation system for the receptions and demo sessions will be up and running on Friday. We may have a small service break to apply a small fix to the virtual machine environment (and we'll notify this separately in the news).

Hi again, it appears that the special symbols get garbled in the email conversion of these news. Anyway, the echo line should have the "greater than" sign as follows: echo "labrat ALL=(ALL) NOPASSWD: ALL" GREATER_THAN_SYMBOL /etc/sudoers.d/localhost

Hi, to save some time by avoiding password prompt with sudo, you can type as follows: labrat@labrat:~$ sudo -s root@labrat:~# echo "labrat ALL=(ALL) NOPASSWD: ALL" >/etc/sudoers.d/localhost root@labrat:~# chmod 0440 /etc/sudoers.d/localhost After this, you'll get root access with "sudo -s" without any password prompt.

Dear students, you can contact us by email follows: t-110.5101 [at] list.aalto.fi t-110.5201 [at] list.aalto.fi

Dear students, Here are some tips to easen up the login process to the virtual systems: You might wanna look "man ssh_config" and this document: https://help.ubuntu.com/community/SSH/OpenSSH/Keys Because some files' user rights aren't correct, you have to run this command in virtual machines before generating the keys: "sudo chown -R labrat:labrat .bash_history .ssh"

Dear students, Problem causing Virtual servers not to be accessible, has been located and fixed. If you still encounter timeout problems when ssh'ing, flush your DNS cache, and try again. At least Aalto nameservers have the right IP address for the server.

Dear students, There's some problems to access the virtual machines, and we're dealing with the problem right now. We let you know when machines are accessible again. Stay tuned!

Dear students, Virtual machines have been created now, and you should have got some info and instructions by email to the address that you have registered in Oodi. If you did not get email about Virtual machines, please contact course personel. Have fun working with the exercises!

Hi, we're still setting up the reservation system so will have exceptionally fixed reception hours during the first round: * Wed 14.9 14-17 * Thu 15.9 11-13 * Fri 16.9 13-14 You can come there if you have some questions on the first round assignments. The reception place is playroom (A120, T-building).

Dear students, we have the following (more detailed) schedule for course start up: * receptions times for the next week will be published on this week Friday (9.9) * virtual machines will be created on Monday (12.9) for all registered in Oodi

Dear students, the introduction slides can be found the "Lectures" tab in noppa. If you missed the lecture, please read through them carefully. There will be no other lectures on this course. Please register to the course in oodi during this week even if you are a bit unsure whether to take a course. Thanks and welcome to the course!

Dear students, the lab courses (T-110.5101 and T-110.5201) will start again in September. On the behalf of the course personel, I warmly welcome you! The starting lecture of both of the courses will be held in lecture hall T1 on Tuesday 6.9.2011 at 8:00-10:00. The first half of the lecture will be about course arrangements and the second half is a brief introduction to Linux. Participation especially to the first part of the lecture is highly recommended. It should be noted the amount of credits is higher than on previous years. Due to this, there will one extra assignment on the courses and, hence, more work. Please register in oodi as early possible even though you're not 100 % sure if you will participate. This way, course personnel can allocate your virtual machines rapidly and you have more time to do your exercises. Miika Komu