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Code Issues Releases Activity

Use multiple methods to obtain self cid (#499)

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fix #498
This commit is contained in:
Nicolas Duchon 2019-01-16 11:29:24 +01:00 committed by GitHub
parent 804344b4e4
commit fb2d0b2371
Signed by: GitHub
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 12 additions and 3 deletions
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15
app/functions.sh
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@ -61,10 +61,19 @@ function check_cert_min_validity {
function get_self_cid {
local self_cid
self_cid="$(basename "$(cat /proc/1/cpuset)")"
if [[ -n "$self_cid" ]]; then
# Try the /proc files methods first then resort to the Docker API.
if [[ -f /proc/1/cpuset ]]; then
self_cid="$(basename "$(cat /proc/1/cpuset)")"
elif [[ -f /proc/self/cgroup ]]; then
self_cid="$(basename "$(cat /proc/self/cgroup | head -n 1)")"
else
self_cid="$(docker_api "/containers/$(hostname)/json" | jq -r '.Id')"
fi
# If it's not 64 characters long, then it's probably not a container ID.
if [[ ${#self_cid} == 64 ]]; then
echo "$self_cid"
return 0
else
echo "$(date "+%Y/%m/%d %T"), Error: can't get my container ID !" >&2
return 1