Revision as of 10:25, 22 July 2013

Description

Basic tests for OpenVZ Linux Containers and Checkpoint/Restore In Userspace (CRIU)

Known issues

Problems with SELinux
- In version 4.4 we introduced new script for disable SELinux /usr/libexec/vzctl/scripts/vz-postinstall
Random system freezes
- RHBZ # 982489
Kernel older or equal 3.10
- You shall execute vzctl exec 101 killall udevd

4.3.1 specific

Doesn't work vzctl exec 101 ps axf (proc is not mounted)
- OpenVZ # 2658
criu: command not found
- yum install crtools (Patch sent to maintainers)
Doesn't work vzctl restore 101 (VE_VETH_DEVS failure)
- OpenVZ # 2659

Bug Reports

If something went wrong you can see dump.log in /var/lib/vz/dump/Dump.101.fail/ and send bugreport.
For bugreport you shall create archive dump and attach to BZ. Create archive (as root):

cd /var/lib/vz/dump/Dump.101.fail/ && tar -cJf /Dump.101.fail.tar.xz *

New bug

Setup

Open terminal
Switch to root user: su -
Install: yum install vzctl
Prepare sysctl settings for network:
1. sysctl net.ipv4.ip_forward=1
2. sysctl net.ipv4.ip_forward=1
3. sysctl net.ipv4.conf.default.proxy_arp=0
4. sysctl net.ipv4.conf.all.rp_filter=1
5. sysctl net.ipv4.conf.default.send_redirects=1
6. sysctl net.ipv4.conf.all.send_redirects=0

How to test

Create new container: vzctl create 101 --ostemplate centos-6-x86_64
Start container: vzctl start 101
Add network interface in container: vzctl set 101 --netif_add em1
Exec ps in container: vzctl exec 101 ps axf
Enter to container: vzctl enter 101
Enable network intarface: ip link set em1 up
Assign ip address to interface: ip addr add 192.168.50.240/24 dev em1
Add route for interface: ip route add default via 192.168.50.254 dev em1
Exec ps in container directly: ps axf
Exit from container: logout
Enable virtual net interface: ip link set veth101.1 up
Add route for virtual net interface: ip route add 192.168.50.240/32 dev veth101.1
Suspend container: vzctl suspend 101
Restore container: vzctl restore 101 or vzctl resume 101
Enter to container: vzctl enter 101
Test network: ping -c 3 8.8.8.8
Exit from container: logout
Stop container: vzctl stop 101

Expected Results

The following must be true to consider this a successful test run. Be brief ... but explicit.

All steps completes without error
Steps #3, #5 shows the same. Like this:

Directory /proc/vz not found, assuming non-OpenVZ kernel
  PID TTY      STAT   TIME COMMAND
  551 pts/0    R+     0:00 ps axf
    1 ?        Ss     0:00 init
   59 ?        S<s    0:00 /sbin/udevd -d
  299 ?        S<     0:00  \_ /sbin/udevd -d
  459 ?        Sl     0:00 /sbin/rsyslogd -i /var/run/syslogd.pid -c 5
  488 ?        Ss     0:00 /usr/sbin/sshd
  495 ?        Ss     0:00 xinetd -stayalive -pidfile /var/run/xinetd.pid
  502 ?        Ss     0:00 /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2
  503 ?        S      0:00  \_ /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2
  518 ?        Ss     0:00 sendmail: accepting connections
  526 ?        Ss     0:00 sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue
  534 ?        Ss     0:00 /usr/sbin/httpd
  537 ?        S      0:00  \_ /usr/sbin/httpd
  542 ?        Ss     0:00 crond

Optional

Optionally provide hints for exploratory testing.

@@ Line 4: / Line 4: @@
 ==Known issues==
 * Problems with SELinux
-** In version 4.4 we introduced new script for disable SELinux {{command | /usr/libexec/vzctl/scripts/vz-postinstall}}
+** In version 4.4 we introduced new script for disable SELinux <code>/usr/libexec/vzctl/scripts/vz-postinstall</code>
 * Random system freezes
 ** {{bz | 982489}}
 * Kernel older or equal 3.10
-** You shall execute {{command | vzctl exec 101  killall udevd}}
+** You shall execute <code>vzctl exec 101  killall udevd</code>
 ===4.3.1 specific===
-* Doesn't work {{command | vzctl exec 101 ps axf}} (proc is not mounted)
+* Doesn't work <code>vzctl exec 101 ps axf</code> (proc is not mounted)
 ** OpenVZ # [https://bugzilla.openvz.org/show_bug.cgi?id=2658 2658]
 * criu: command not found
-** {{command | yum install crtools}} (Patch sent to maintainers)
+** <code>yum install crtools</code> (Patch sent to maintainers)
-* Doesn't work {{command | vzctl restore 101}} (VE_VETH_DEVS failure)
+* Doesn't work <code>vzctl restore 101</code> (VE_VETH_DEVS failure)
 ** OpenVZ # [https://bugzilla.openvz.org/show_bug.cgi?id=2659 2659]
 ==Bug Reports==
 * If something went wrong you can see dump.log in <code>/var/lib/vz/dump/Dump.101.fail/</code> and send bugreport.
 * For bugreport you shall create archive dump and attach to BZ. Create archive (as root):
-{{command | cd /var/lib/vz/dump/Dump.101.fail/ && tar -cJf /Dump.101.fail.tar.xz *}}
+<code>cd /var/lib/vz/dump/Dump.101.fail/ && tar -cJf /Dump.101.fail.tar.xz *</code>
 * [https://bugzilla.redhat.com/enter_bug.cgi?product=Fedora&component=vzctl New bug]
 |setup=
 # Open terminal
-# Switch to root user: {{command | su -}}
+# Switch to root user: <code>su -</code>
-# Install: {{command | yum install vzctl}}
+# Install: <code>yum install vzctl</code>
+# Prepare sysctl settings for network:
+## <code>sysctl net.ipv4.ip_forward=1</code>
+## <code>sysctl net.ipv4.ip_forward=1</code>
+## <code>sysctl net.ipv4.conf.default.proxy_arp=0</code>
+## <code>sysctl net.ipv4.conf.all.rp_filter=1</code>
+## <code>sysctl net.ipv4.conf.default.send_redirects=1</code>
+## <code>sysctl net.ipv4.conf.all.send_redirects=0</code>
 |actions=
-# Create new container: {{command | vzctl create 101 --ostemplate centos-6-x86_64}}
+# Create new container: <code>vzctl create 101 --ostemplate centos-6-x86_64</code>
-# Start container: {{command | vzctl start 101}}
+# Start container: <code>vzctl start 101</code>
-# Exec ps in container: {{command | vzctl exec 101 ps axf}}
+# Add network interface in container: <code>vzctl set 101 --netif_add em1</code>
-# Enter to container: {{command | vzctl enter 101}}
+# Exec ps in container: <code>vzctl exec 101 ps axf</code>
-# Exec ps in container directly: {{command | ps axf}}
+# Enter to container: <code>vzctl enter 101</code>
-# Exit from container: {{command | logout}}
+# Enable network intarface: <code>ip link set em1 up</code>
-# Suspend container: {{command | vzctl suspend 101}}
+# Assign ip address to interface: <code>ip addr add 192.168.50.240/24 dev em1</code>
-# Restore container: {{command | vzctl restore 101}} or {{command | vzctl resume 101}}
+# Add route for interface: <code>ip route add default via 192.168.50.254 dev em1</code>
-# Stop container: {{command | vzctl stop 101}}
+# Exec ps in container directly: <code>ps axf</code>
+# Exit from container: <code>logout</code>
+# Enable virtual net interface: <code>ip link set veth101.1 up</code>
+# Add route for virtual net interface: <code>ip route add 192.168.50.240/32 dev veth101.1</code>
+# Suspend container: <code>vzctl suspend 101</code>
+# Restore container: <code>vzctl restore 101</code> or <code>vzctl resume 101</code>
+# Enter to container: <code>vzctl enter 101</code>
+# Test network: <code>ping -c 3 8.8.8.8</code>
+# Exit from container: <code>logout</code>
+# Stop container: <code>vzctl stop 101</code>
 |results=
 The following must be true to consider this a successful test run. Be brief ... but explicit.

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