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[Issue #204] Enforce "no-forward-compatibility" policy on remote agent

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This commit is contained in:
Grigory Smolkin 2020-05-14 17:43:39 +03:00
parent 612e928d1b
commit 884dd528a5
1 changed files with 10 additions and 0 deletions
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10
src/pg_probackup.c
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@ -345,6 +345,16 @@ main(int argc, char *argv[])
#endif
else if (strcmp(argv[1], "agent") == 0)
{
/* 'No forward compatibility' sanity:
* /old/binary -> ssh execute -> /newer/binary agent version_num
* If we are executed as an agent for older binary, then exit with error
*/
if (argc > 2)
{
elog(ERROR, "Version mismatch, pg_probackup binary with version '%s' "
"is launched as an agent for pg_probackup binary with version '%s'",
PROGRAM_VERSION, argv[2]);
}
fio_communicate(STDIN_FILENO, STDOUT_FILENO);
return 0;
}