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Troubleshooting Guide in 'raw' format

{{TableOfContents}}
This page describes problems encountered using Fuego, and their solutions.

''Note for Editors: please put each issue in it's own page section''

= Installation =
== Problem with default Jenkins port ==
Fuego has Jenkins default to using port 8080 on the host system.  However,
if you have something else already running on port 8080, you may wish to
change this.

To change the Jenkins port, start the container, and inside
the container edit the file:
 * /etc/default/jenkins

Change the line that says: HTTP_PORT=8080

Change to port to whatever your like.

Also, check the line that defines JENKINS_ARGS.  Mine looked like this:
{{{#!YellowBox
JENKINS_ARGS="--webroot=/var/cache/jenkins/war --httpPort=8080 --prefix=/fuego"
}}}

Change this line to read as follows:
{{{#!YellowBox
JENKINS_ARGS="--webroot=/var/cache/jenkins/war --httpPort=$HTTP_PORT --prefix=/fuego"
}}}

Then restart Jenkins:
 * $ service jenkins restart


== Problem creating docker file ==
Make sure you are running on a 64-bit version of the Linux kernel on
your host machine.

== Problem starting Jenkins after initial container creation ==
Doug Crawford reported a problem starting Jenkins in the container
after his initial build.

{{{#!YellowBox
$ sudo ./docker-create-container.sh
Created JTA container 6a420f901af7847f2afa3100d3fb3852b71bc65f92aecd13a9aefe0823d42b77
$ sudo ./docker-start-container.sh Starting JTA container
6a420f901af7847f2afa3100d3fb3852b71bc65f92aecd13a9aefe0823d42b77
[....] Starting Jenkins Continuous Integration Server: jenkinssu: System error  failed!
[ ok ] Starting OpenBSD Secure Shell server: sshd.
[ ok ] Starting network benchmark server.
}}}

The error string is jenkinssu: System error

Takuo Kogushi provides the following response:

I had the same issue. I did some search in the net and found it is not a problem of fuego itself.
As far as I know there are two workarounds;
 * 1) Rebuild and install libpam with --disable-audit option (in the container) or
 * 2) Modify docker-create-container.sh to add --pid="host" option to docker create command

Here is a patch provided by Koguchi-san:
{{{#!YellowBox
diff --git a/fuego-host-scripts/docker-create-container.sh b/fuego-host-scripts/docker-create-container.sh
index 2ea7961..24663d6 100755
--- a/fuego-host-scripts/docker-create-container.sh
+++ b/fuego-host-scripts/docker-create-container.sh
@@ -7,7 +7,7 @@ while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symli  done  DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"

-CONTAINER_ID=`sudo docker create -it -v $DIR/../userdata:/userdata --net="host" fuego`
+CONTAINER_ID=`sudo docker create -it -v $DIR/../userdata:/userdata --pid="host" --net="host" fuego`
 CONTAINER_ID_FILE="$DIR/../last_fuego_container.id"
 echo "Created Fuego container $CONTAINER_ID"
 echo $CONTAINER_ID > $DIR/../last_fuego_container.id
}}}

Actually I have not tried the first one and do not know if there is any side effects for the second.
---

This may be related to this docker bug: https://github.com/docker/docker/issues/5899

== Problem with bad port on ssh connection ==
ovgen.py doesn't parse SSH_PORT from:
 * /home/jenkins/fuego/engine/scripts/overlays/base/base-board.fuegoclass
because it is missing double quotes.

The symptom is the following:
You see the following in the test log for some test you tried to run:
{{{#!YellowBox
+++ sshpass -e ssh -o ServerAliveInterval=30 -o
StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o
ConnectTimeout=15 -p root@10.0.0.1 true
Bad port 'root@10.0.0.1'
+++ abort_job 'Cannot connect to 10.0.0.1 via ssh'
+++ set +
}}}

The error string here is "Bad port 'root@10.0.0.1'"

This occurs because the port is empty.  It should have been passed
to the ssh command after the '-p' command line option, but since it
is empty, it uses the account-name@address combination as the argument.

The reason it is empty is that a bug in the base-board.fuegoclass is
missing the double-quotes.

This is fixed in the tbird20d repository with the following commit:
 * https://bitbucket.org/tbird20d/fuego-core/commits/abb2e7161ba66017a267c09897e5db4d938ab214


= General =
== Timeout executing ssh commands ==
In some cases, the ssh command used by Fuego takes a very long
time to connect.  There is a timeout for the ssh commands,
specified as 15 seconds in the cogent repository and 30 seconds
in the tbird20d repository.

The timeout for ssh commands is specified in the file
 * /home/jenkins/fuego/engine/scripts/overlays/base/base-params.fuegoclass

You can change ConnectTimeout to something longer by editing the file.

FIXTHIS - make ConnectTimeout for ssh connections a board-level test variable

== ssh commands taking a long time ==
Sometimes, even if the command does not time, the SSH operations
on the target take a very long time for each operation.

The symptom is that when you are watching the console output for
a test, the test stops at the point of each SSH connection to the
target.

One cause of long ssh connection times can be that the target
ssh server (sshd) is configured to do DNS lookups on each inbound
connection.

To turn this off, on the target, edit the file:
 * /etc/ssh/sshd_config
and add the line:

{{{#!YellowBox
UseDNS no
}}}

This line can be added anywhere in the file, but I recommend adding
it right after the UsePrivilegeSeparation line (if that's there).












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