docker-mc-backup
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itzg
Not working when i restart the mc server
I use a script with rcon-cli to restart the server of minecraft and if i do when mc-backup is working, dont work anymore. When the server is up again cant connect so i restart both at once or only the mc-backup container when mc server is UP.
Here is the debug:
- : /data
- : /backups
- : Vault-Hunters
- : 2m
- : 4h
- : true
- : 10m
- : tar
- : gzip
- : '-3 --long=25 --single-thread'
- : 1
- : '--keep-within 7d' 5
- : mc 5
- : ''
- : serverjk-mc
- : -1
- : 10s
- : '*.jar,cache,logs' e
- : mc_backups
- : /config e
- : Europe/Madrid
- : gzip
- : ''
- : ''
- : ''
- : ''
- : ''
- : ''
- export TZ
- export RCON_HOST
- export RCON_PORT
- export RCON_PASSWORD
- export XDG_CONFIG_HOME
- export SRC_DIR
- export DEST_DIR
- export BACKUP_NAME
- [[ -n '' ]]
- [[ -n '' ]]
- [[ -n '' ]]
- '[' -n '' ']'
- '[' '!' -d /data ']'
- is_function tar
- '[' 1 -ne 1 ']'
- name=tar ++ type -t tar
- '[' function == function ']'
- readarray -td, excludes_patterns ++ printf %s '*.jar,cache,logs'
- excludes=()
- for pattern in "${excludes_patterns[@]}"
- excludes+=(--exclude "${pattern}")
- for pattern in "${excludes_patterns[@]}"
- excludes+=(--exclude "${pattern}")
- for pattern in "${excludes_patterns[@]}"
- excludes+=(--exclude "${pattern}")
- tar init
- call_if_function_exists init
- '[' 1 -lt 1 ']'
- function_name=init
- is_function init
- '[' 1 -ne 1 ']'
- name=init ++ type -t init
- '[' function == function ']'
- init
- mkdir -p /backups
- case "${TAR_COMPRESS_METHOD}" in
- tar_parameters=('--gzip')
- readonly tar_parameters
- readonly backup_extension=tgz
- backup_extension=tgz
- is_one_shot
- [[ FALSE = TRUE ]]
- return 1
- log INFO 'waiting initial delay of 2m...'
- '[' 2 -lt 1 ']'
- local level=INFO
- shift
- valid_levels=('INFO' 'WARN' 'ERROR' 'INTERNALERROR')
- local valid_levels
- is_elem_in_array INFO INFO WARN ERROR INTERNALERROR
- '[' 5 -lt 2 ']'
- local element=INFO
- shift e
- for e in "$@"
- '[' INFO == INFO ']'
- return 0
- '[' 1 -ge 1 ']'
- cat -
- awk -v level=INFO '{ printf("%s %s %s\n", strftime("%FT%T%z"), level, $0); fflush(); }' 2022-09-01T16:35:51+0200 INFO waiting initial delay of 2m...
- '[' INFO == INTERNALERROR ']'
- sleep 2m
- log INFO 'waiting for rcon readiness...'
- '[' 2 -lt 1 ']'
- local level=INFO
- shift
- valid_levels=('INFO' 'WARN' 'ERROR' 'INTERNALERROR')
- local valid_levels
- is_elem_in_array INFO INFO WARN ERROR INTERNALERROR
- '[' 5 -lt 2 ']'
- local element=INFO
- shift e
- for e in "$@"
- '[' INFO == INFO ']'
- return 0
- '[' 1 -ge 1 ']'
- cat -
- awk -v level=INFO '{ printf("%s %s %s\n", strftime("%FT%T%z"), level, $0); fflush(); }' 2022-09-01T16:37:51+0200 INFO waiting for rcon readiness...
- '[' INFO == INTERNALERROR ']'
- retry -1 10s rcon-cli save-on
- '[' 4 -lt 3 ']'
- local retries=-1
- local interval=10s
- readonly retries interval 2
- (( retries < 0 ))
- local retries_msg=infinite
- local i=-1
- (( retries >= ++i ))
- '[' infinite '!=' -1 ']' ++ timeout --signal=SIGINT --kill-after=30s 5m rcon-cli save-on ++ tr '\n' '\t'
- output='2022/09/01 16:37:51 Failed to connect to RCON serverdial tcp: lookup mc on 127.0.0.11:53: read udp 127.0.0.1:43190->127.0.0.11:53: read: connection refused '
- log ERROR 'Unable to execute rcon-cli save-on - try 0/infinite. Retrying in 10s'
- '[' 2 -lt 1 ']'
- local level=ERROR
- shift
- valid_levels=('INFO' 'WARN' 'ERROR' 'INTERNALERROR')
- local valid_levels
- is_elem_in_array ERROR INFO WARN ERROR INTERNALERROR
- '[' 5 -lt 2 ']'
- local element=ERROR
- shift e
- for e in "$@"
- '[' ERROR == INFO ']'
- for e in "$@"
- '[' ERROR == WARN ']'
- for e in "$@"
- '[' ERROR == ERROR ']'
- return 0
- '[' 1 -ge 1 ']'
- cat -
- awk -v level=ERROR '{ printf("%s %s %s\n", strftime("%FT%T%z"), level, $0); fflush(); }' 2022-09-01T16:37:51+0200 ERROR Unable to execute rcon-cli save-on - try 0/infinite. Retrying in 10s
- '[' ERROR == INTERNALERROR ']'
- '[' -n '2022/09/01 16:37:51 Failed to connect to RCON serverdial tcp: lookup mc on 127.0.0.11:53: read udp 127.0.0.1:43190->127.0.0.11:53: read: connection refused ' ']'
- log ERROR 'Failure reason: 2022/09/01 16:37:51 Failed to connect to RCON serverdial tcp: lookup mc on 127.0.0.11:53: read udp 127.0.0.1:43190->127.0.0.11:53: read: connection refused '
...
What you're attempting should be fine.
It's actually running into a DNS problem since this is UDP to port 53
lookup mc on 127.0.0.11:53: read udp 127.0.0.1:43190->127.0.0.11:53: read: connection refused
A dns error on the same machine? What could be the solution? The thing is that I use your rcon client to restart the server periodically and I have noticed that after each restart the mc-backups container remained stopped. I had thought about forcing the automatic start but it would create a backup every day after the reboot
Anyway thanks for your help!
Docker is providing DNS internally to resolve service names to container IP address. Google for that particular symptom to look for solutions.
The docs say to set RCON_RETRIES to a negative value to have it retry indefinitely, if you're wanting to prevent the container from stopping on failures.