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|
# nix-shell -p gnumake jq openssh cac-api cac-panel sshpass
set -eufx
# 2 secrets are required:
krebs_cred=${krebs_cred-./cac.json}
retiolum_key=${retiolum_key-./retiolum.rsa_key.priv}
clear_defer(){
echo "${trapstr:-exit}"
trap - INT TERM EXIT KILL
}
defer(){
if test -z "${debug:-}"; then
trapstr="$1;${trapstr:-exit}"
trap "$trapstr" INT TERM EXIT KILL
fi
}
# Sanity
if test ! -r "$krebs_cred";then
echo "\$krebs_cred=$krebs_cred must be readable"; exit 1
fi
if test ! -r "$retiolum_key";then
echo "\$retiolum_key=$retiolum_key must be readable"; exit 1
fi
krebs_secrets=$(mktemp -d)
sec_file=$krebs_secrets/cac_config
krebs_ssh=$krebs_secrets/tempssh
export cac_resources_cache=$krebs_secrets/res_cache.json
export cac_servers_cache=$krebs_secrets/servers_cache.json
export cac_tasks_cache=$krebs_secrets/tasks_cache.json
export cac_templates_cache=$krebs_secrets/templates_cache.json
# we need to receive this key from buildmaster to speed up tinc bootstrap
defer "trap - INT TERM EXIT"
defer "rm -r $krebs_secrets"
cat > $sec_file <<EOF
cac_login="$(jq -r .email $krebs_cred)"
cac_key="$(cac-panel --config $krebs_cred settings | jq -r .apicode)"
EOF
export cac_secrets=$sec_file
cac-panel --config $krebs_cred add-api-ip
# test login:
cac-api update
cac-api servers
# preserve old trap
old_trapstr=$(clear_defer)
while true;do
# Template 26: CentOS7
# TODO: use cac-api templates to determine the real Centos7 template in case it changes
out=$(cac-api build cpu=1 ram=512 storage=10 os=26 2>&1)
if name=$(echo "$out" | jq -r .servername);then
id=servername:$name
echo "got a working machine, id=$id"
else
echo "Unable to build a virtual machine, retrying in 15 seconds" >&2
echo "Output of build program: $out" >&2
sleep 15
continue
fi
clear_defer >/dev/null
defer "cac-api delete $id"
# TODO: timeout?
wait_login_cac(){
# we wait for 30 minutes
for t in `seq 180`;do
# now we have a working cac-api server
if cac-api ssh $1 -o ConnectTimeout=10 \
cat /etc/redhat-release | \
grep CentOS ;then
return 0
fi
sleep 10
done
return 1
}
# die on timeout
if ! wait_login_cac $id;then
echo "unable to boot a working system within time frame, retrying..." >&2
echo "Cleaning up old image,last status: $(cac-api update;cac-api getserver $id | jq -r .status)"
eval "$(clear_defer | sed 's/;exit//')"
sleep 15
else
echo "got a working system" >&2
break
fi
done
clear_defer >/dev/null
defer "cac-api delete $id;$old_trapstr"
mkdir -p shared/2configs/temp
cac-api generatenetworking $id > \
shared/2configs/temp/networking.nix
# new temporary ssh key we will use to log in after install
ssh-keygen -f $krebs_ssh -N ""
cp $retiolum_key $krebs_secrets/retiolum.rsa_key.priv
# we override the directories for secrets and stockholm
# additionally we set the ssh key we generated
ip=$(cac-api getserver $id | jq -r .ip)
cat > shared/2configs/temp/dirs.nix <<EOF
_: {
krebs.build.source.dir = {
secrets.path = "$krebs_secrets";
stockholm.path = "$(pwd)";
};
users.extraUsers.root.openssh.authorizedKeys.keys = [
"$(cat ${krebs_ssh}.pub)"
];
}
EOF
make install \
LOGNAME=shared \
SSHPASS="$(cac-api getserver $id | jq -r .rootpass)" \
ssh='sshpass -e ssh -S none -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null' \
system=test-centos7 \
target=$ip
# TODO: generate secrets directory $krebs_secrets for nix import
cac-api powerop $id reset
wait_login(){
# timeout
for t in `seq 90`;do
# now we have a working cac-api server
if ssh -o StrictHostKeyChecking=no \
-o UserKnownHostsFile=/dev/null \
-i $krebs_ssh \
-o ConnectTimeout=10 \
-o BatchMode=yes \
root@$1 nixos-version ;then
return 0
fi
sleep 10
done
return 1
}
wait_login $ip
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